Power Line Wires Research Articles

Justification of the scheme of melting ice on the wires of overhead power lines

The article discusses an urgent problem related to the formation of ice and frost deposits on the wires of overhead power lines, which causes significant technical difficulties in ensuring the reliability of power supply, especially in winter. The accumulation of ice and frost on the wires leads to an increase in the weight of the wires, which can cause them to sag, damage insulators, destroy poles, and, as a result, serious accidents on power lines. The causes of accidents in power grids due to ice and frost deposits are analyzed and it is found that their elimination will reduce the probability of damage to overhead power lines from the action of ice loads. However, existing methods of dealing with this problem have a number of disadvantages, such as high cost, low efficiency in certain conditions, and negative environmental impact. The article presents a scheme for melting ice on the wires of overhead power lines by the method of a three-phase short circuit when powered by a power source with a solidly grounded and isolated neutral. This scheme makes it possible to locally increase the temperature of wires to a level sufficient to melt ice and frost, which reduces the risk of emergencies and ensures the uninterrupted operation of the electrical grid. The article provides theoretical justifications for the scheme for melting ice with three-phase short-circuit currents, which confirm its effectiveness. The analysis has shown that the proposed scheme is economically feasible, as it reduces the cost of maintenance and repair of overhead power lines. In addition, it is environmentally friendly, as it does not involve the use of chemicals. Thus, the proposed scheme for melting ice on the wires of overhead power lines is a promising solution for improving the reliability and safety of power supply in winter weather conditions. Its application can significantly increase the efficiency of power grid operation, reduce the number of accidents, and improve the stability of power supply to consumers.

МАТЕМАТИЧНІ МОДЕЛІ МОНІТОРИНГУ ВІДКЛАДЕНЬ ОЖЕЛЕДІ ТА ЗМІНИ СТРІЛИ ПРОВИСАННЯ ПРОВОДІВ ПОВІТРЯНИХ ЛІНІЙ ЕЛЕКТРОПЕРЕДАВАННЯ

The paper presents the results of studing the problem of monitoring the condition of an overhead power line wire. The known approaches to the formation of a device for monitoring the sagging boom and ice-coating on the line wires are analysed. It is shown that one of the most promising approaches is based on measuring the angle of inclination of the wire sagging curve near the point of its fixation on the support. It is shown that an unambiguous correlation between the slope angle of the sagging curve and the wire sagging arrow allows for an indirect measurement of the operating temperature of the wire in the absence of ice deposits. It has been shown that equipping the monitoring device with a temperature sensor will allow monitoring the weight of ice-coating and, if necessary, issuing a signal for organising anti-icing measures. Modification of the device with a three-axis gyroscopic sensor allows for additional monitoring of wind pressure on overhead line wires. The paper presents mathematical models for solving these problems of monitor-ing the condition of the wire.

Design for magnetorheological dampers for protection of wires of overhead power lines

A methodology for design of magnetorheological dampers for damping vibration of overhead power lines with voltages above 110 kV is proposed, which includes a finite element model of the behavior of the working magnetorheological fluid in a hydraulic channel, and a Matlab model of dynamic processes in a loaded damper. This technique uses tables of damping coefficient values instead of the hysteretic displacement variable characteristic of the Bouc—Wen model, i.e., they use variables and parameters with a physical meaning, known at the stage of formulating of technical requirements or determined by calculations. To verify and evaluate the accuracy of the technique, a vibration model of a section of AC 150/19 wire is studied as a system with lumped parameters, suspended on garlands of intermediate support insulators using magnetorheological dampers. Keywords:magnetorheological damper, wire, vibration, overhead power lines, Matlab, diagram, magnetorheological fluid acidwolfvx@rambler.ru, erof.vi@yandex.ru, ilyatishin41.45@gmail.com

Efficiency of multi-armature linear pulse electromechanical power and speed converters

Introduction. High-speed linear pulse electromechanical converters (LPEC) provide acceleration of the executive element in a short active section to high speed with significant displacement, while power-purpose LPECs create powerful power impulses of the executive element on the object of influence with minor movements. One of the areas of improvement of LPEC is the creation of multi-armature structures. Methodology. To analyze the electromechanical characteristics and indicators of LPEC, a mathematical model was used, which takes into account the interconnected electrical, magnetic, mechanical and thermal processes that occur when connected to a pulse energy source with a capacitive energy storage. The main results of the calculations were performed in the COMSOL Multiphysics software environment and confirmed by experimental studies in laboratory conditions. Results. The features of the electromechanical processes of multi-armature LPECs are established and their indicators are determined. With the help of efficiency criteria, which take into account electrical, power, speed and magnetic indicators in a relative form with different options for their evaluation strategy, it was established that multi-armature LPECs for power purposes have increased efficiency, and for high-speed LPECs the use of multi-armature configurations is impractical. The conducted experimental studies confirm the reliability of the calculated results. Originality. It has been established that almost all multi-armature LPECs for power purposes have higher efficiency compared to a converter with one armature, and for high-speed LPECs it is advisable to use traditional LPECs with one armature. Practical value. On the basis of multi-armature LPECs, models of an electromagnetic UAV catapult, a magnetic pulse press for ceramic powder materials, an electromechanical device for dumping ice and snow deposits from a power line wire, a device for destroying information on a solid-state digital SSD drive have been developed and tested. References 20, tables 4, figures 8.

Method for design of two-level system of active shielding of power frequency magnetic field based on a quasi-static model

Aim. Development of method for design a two-level active shielding system for an industrial frequency magnetic field based on a quasi-static model of a magnetic field generated by power line wires and compensating windings of an active shielding system, including coarse open and precise closed control. Methodology. At the first level rough control of the magnetic field in open-loop form is carried out based on a quasi-static model of a magnetic field generated by power line wires and compensating windings of an active shielding system. This design calculated based on the finite element calculations system COMSOL Multiphysics. At the second level, a stabilizing accurate control of the magnetic field is implemented in the form of a dynamic closed system containing, in addition plant, also power amplifiers and measuring devices of the system. This design calculated based on the calculations system MATLAB. Results. The results of theoretical and experimental studies of optimal two-level active shielding system of magnetic field in residential building from power transmission line with a «Barrel» type arrangement of wires by means of active canceling with single compensating winding are presented. Originality. For the first time, the method for design a two-level active shielding system for an power frequency magnetic field based on a quasi-static model of a magnetic field generated by power line wires and compensating windings of an active shielding system, including coarse open and precise closed control is developed. Practical value. It is shown the possibility to reduce the level of magnetic field induction in residential building from power transmission line with a «Barrel» type arrangement of wires by means of active canceling with single compensating winding with initial induction of 3.5 µT to a safe level for the population adopted in Europe with an induction of 0.5 µT.

Design of a teleoperated and mixed reality-based electric power live line working robot

This paper presents a novel teleoperation force feedback approach combining graphic and haptic feedback for enhanced telepresence. Visual force feedback is modeled through a fitting process, with the force direction established through coordinate transformations. To construct operational environments, a new scene recognition and reconstruction technique is proposed, based on the principles of binocular stereovision. This method is primarily designed for live-line work scenarios, focusing on power line wires. It involves image preprocessing, target image recognition and extraction, binocular stereo measurements, generating depth point clouds, and ultimately reconstructing three-dimensional models of the target objects. Ultimately, a novel electric power live line working robot system with a strong sense of telepresence is achieved, based on teleoperation and mixed reality.

Experimental study of a temperature measurement system for an overhead power line using sensors based on TFBG

This article presents the use of an inclined fiber sensor Bragg grid to control the extension of wires in overhead lines. An aspect of the technological novelty of the project is the development of an innovative optoelectronic system for monitoring and diagnosing the condition of building structures based on a combination of conventional Bragg gratings. The lighting power sensor is installed directly on the controlled transmission of the power line in the form of fittings with a copper plate. A photosensitive multimode optical fiber is attached to the copper plate, at the end of which an inclined fiber Bragg grating is fixed, connected to a multimode optical fiber using a fiber-optic connector through an optical connector. An ultraviolet excimer laser and a light power detector are connected to a fiber-optic connector. The study showed that by selecting the appropriate mechanical parameters of the extension transformer, taking into account the optical parameters of the sensor, and using a special filter, the optical-mechanical system can be configured in the required range to control the sagging of the overhead line wire. During measurements to simulate the operation of a power line wire, the temperature was forced to vary in the range of 10-60°C. This led to the lengthening of the test wire from 38.987 m to 49.275 m; the error was within 4%. The deflection range depends on the distance between the supports, the type of wire, and its actual length in the span, which actually determines the deflection.

ВОЗРАСТ ПИЛОТА И ТРАВМАТИЗМ В АВИАЦИИ

The results of an analysis of the influence of pilot age on injury statistics in civil aviation are described. The proportion of aviation accidents caused by human actions remains the same and even tends to increase. Workers continue to get injured during ground handling operations for aircraft. The authors' assessment of the various risk factors contribution to ongoing negative events confirms the human factor prevalence. Statistics on the activities of civil aviation was analyzed. Examples of aviation accidents involving general aviation aircraft and medical aircraft transporting patients who required emergency medical care were considered. It has been shown that there is a peak in the aviation accidents for pilots aged 50-59 years, and this peak is observed among experienced pilots with more than 5,000 hours of flight time. For pilots aged 40-49 years, half of the accidents occurred among aircraft commanders with 1,000 ... 5,000 hours of flight time, and about one third among pilots with less than 500 hours of flight time. It was revealed that for domestic general aviation in 2020, the main causes of aviation accidents were such elements of human factor as piloting errors associated with deficiencies in training and little flight experience; loss of spatial orientation in weather conditions that do not comply with visual flight rules, when the underlying surface is white, when caught in a snow whirlwind, as well as a collision with power line wires.

Modeling of thermal processes when melting ice on power lines

An analysis of the problem of ice formation on power line wires was carried out, and a review of work in the field of melting ice on various lines was carried out. Existing achievements and problems are noted. One of the reasons for the low equipment of lines with automated melting systems is the need to transfer the line from the operating state to the melting mode. One way to solve the problem is to combine these modes by loading the line with additional current without increasing the power transmitted to consumers. A set of issues on modeling thermal processes in the ice shell of power line wires during ice melting is considered. Limiting the power of heat generation in wires leads to the need to build a sufficiently accurate mathematical model to guarantee melting at different values of wind speed and temperature. A study of wire heating processes was carried out using models of stationary and non-stationary thermal conductivity. An algorithm is proposed for solving the thermal problem when a heated wire penetrates an ice shell, based on simulating the movement of the interface between the solid and liquid phases of water. The features of modeling the melting and crystallization process using a numerical method are described. When ice transitions to a molten state, melting reflects a change in density and the formation of an air gap, accompanied by a significant decrease in heat flows to the lower region of the ice shell. The results of numerical modeling of the process of melting an ice shell with a wire at different values of the convective heat transfer coefficient are presented. When analyzing the modeling results, conditions were identified for the occurrence of unacceptable overheating of a wire freed from ice. Various options for constructing a control system for the smelting process have been proposed to prevent overheating of the wire.

Heating and cooling of insulated wires of overhead power lines with variations in wind direction

Subject of research: heating and cooling of insulated wires of overhead lines of electric power systems.
 The purpose of the study: experimental determination of heating and cooling curves of insulated wires of overhead lines with changes in wind speed and its direction relative to the axis of the wire.
 Object of research: insulated wires of overhead lines.
 The main results of the study: an overview of an experimental stand developed for the study of non-stationary thermal modes of overhead power lines wires that occur when weather conditions and flowing currents change. The results of a study of heating and cooling of an insulated wire of overhead lines with a cross section of 16 mm2 with a change in the direction of the laminar airflow relative to the axis of the wire, provided that the current flowing through the sample is constant, are presented. The measurements were carried out using devices that record the current strength, temperature and voltage. Heating and cooling curves would be constructed based on the results. The angles of the wind direction relative to the wire were altered, at which the temperature difference is the smallest.

Study of foreign experience in dealing with ice and frost deposits on the wires of overhead power lines

The means and technologies for predicting and preventing frost and ice deposits on the wires of overhead power lines in the power grids of foreign countries are presented. The focus is on such systems as Meteo, dynamic thermal rating, online monitoring of China Southern Power Grid, Variable resistance cable de-icing system and mobile ice melting units. The advantages and disadvantages of these systems are analyzed and it is found that such approaches require energy consumption and are relevant only for the relevant region of the power grid, depending on weather conditions and the distance of electricity transmission. The mechanical, electromechanical, electrothermal, and physicochemical methods of predicting frost and ice deposits on the wires of overhead power lines are considered. It was found that the consideration of dynamic processes is essential and effective in the study of power grids in extreme weather conditions, and the data on frost and ice deposits on overhead line wires are characterized by high dimensionality, nonlinearity, multimodality, and heterogeneity, which makes it impossible to create an accurate forecasting model using traditional methods of evaluation and decision-making. The method of time series analysis and the method of Ensemble Empirical Mode Decomposition are proposed to solve this problem. The basis of these methods is to maximize the use of inherent regularities represented by frequency and time characteristics for effective data analysis and to create the basis for subsequent models and improve their forecasting accuracy. On the basis of the research, the author proposes ways to adapt and integrate the experience of foreign countries into the power grids of Ukraine. The necessity of creating integrated information systems for monitoring meteorological parameters and operating modes of power grids using specialized forecasting models and IT systems is substantiated, which will automate the process of assessing the current state of overhead power lines based on meteorological data in order to timely prevent emergencies in power grids provoked by frost and ice deposits.

Development of new methods for assessing the technical condition of power lines using digital image processing

An important role in satisfying the high quality of life of the population and modern industry is played by the reliability of power supply and ensuring uninterrupted delivery of electricity. As a result of a large number of emergency failures of elements caused by external factors, information about the technical state of elements in real time is not used by dispatching centers. These conditions cause difficulties in assessing the reliability of power lines and timely elimination of developing defects, which cause high transmission losses and lead to wire breaks and failures.Considering a digital photo or other raster image to assess the surface of power lines wires, we know that it is an array of numbers recorded by sensors of brightness levels, in a two-dimensional plane. Knowing that in mathematical terms a thin lens performs the Fourier transform of images placed in the focal planes, it is possible to create image processing algorithms, which are analogues of image processing by a classical optical system. An algorithm for automatic processing of scanning electron microscopy images aimed at detecting and describing surface defects in power line wires is proposed, which is implemented in the Python programming language. The algorithm proposes to use a Fourier transform procedure to eliminate the image brightness gradient and suppress high-frequency noise in the image by applying a two-dimensional bandpass filter. The necessity and parameters of the dynamic range normalization of the filtered image are determined. The binarization parameters of the normalized image are determined. A quantitative assessment of the degree of defectiveness of the investigated wire surface has been proposed. A quantitative assessment of the degree of elongation of defects on the surface of the investigated wire has been proposed.

On functioning of Siberian IDGC branch of PJSC Rosseti – JSC Chitaenergosbyt

Specifics of the functioning of the electric grid company over the period of its activity in 2016 – 2022 are considered. Based on the publicly available data, an analysis of the structural features of the company, as well as the electric energy balance for its transmission to and from the company's networks, taking into account losses arising during the electricity transportation to consumers, was carried out. The characteristics of generating capacity, as well as the number of substations on the Trans-Baikal Territory and in the Republic of Buryatia are presented, their age assessment is given. The level of electricity consumption is analyzed, as well as the structural composition of consumers receiving electric energy through the company's networks. Based on available information about emergency situations, the number of failures that occurred in the company's networks during the period under study, as well as the causes of those failures, were analyzed. It has been established that the greatest number of failures is associated with the wear of electrical grid equipment, which causes a collision of wires of overhead power lines, their breakage, as well as the breakdown of high-voltage insulators. The percentage ratio of the main causes of failures in the company's electrical networks has been determined. Based on the use of Matlab graphic editor technologies, the visualization of the analyzed dependencies was carried out, which enabled to have a demonstration of changes in the number of failures, the amount of under-supplied electrical energy, as well as economic damage from this under-supply. Graphical diagrams are presented and a detailed analysis of the causes of emergency events for the current half of 2022 is given. Reversible malfunctions (unstable failures) are noted, and their share in the total volume of emergency situations is determined. Recommendations have been developed for the company specialists to improve the reliability of power supply. The results obtained can be useful both to the management and specialists of the company in question, as well as to scientific and technical workers and engineering personnel engaged in research in the field of improving the reliability and safety of functioning of electric power systems.

Increasing the environmental cleanness of industrial enterprises

The article discusses important issues to improve the environmental friendliness of industrial enterprises. Emissions of harmful substances into the atmosphere by coal-fired power plants are analyzed. As well as emissions of pollutants (kg) of various fuels per 1 ton of equivalent fuel, 1 Gcal of heat and 1 MWh of electricity. Potentially possible emissions of the main pollutants when using coal, firewood and diesel fuel for domestic needs are given. An estimate of the reduction in emissions of pollutants into the atmosphere is projected, thousand tons/year. The effects of environmental and energy-saving measures in the energy sector are assessed. The following are the negative impacts of overhead power lines: the biological impact of electromagnetic fields on fauna, including humans; cutting down trees and alienation of significant land plots for power transmission lines; disturbance of the natural landscape; interference to radio and television reception from corona discharge on power line wires.

MECHANICAL CALCULATION OF OVERHEAD POWER LINE WIRES USING SICAD

The power transmission system is a key element of the electric power infrastructure, which ensures the uninterrupted supply of electricity to consumers. Given the importance of system reliability and efficiency, it is necessary to develop methods that save time and effort during design and provide optimal characteristics of wires. The developed automatic design and calculation system is based on computer models and algorithms that take into account various factors affecting the mechanical properties of wires of overhead power lines. Such factors include the maximum mechanical stress to which the wires are subjected due to wind forces, ice loads and other external influences, as well as electrical parameters such as current, voltage and energy losses. In addition, the system takes into account weather conditions, such as wind speed, temperature and air humidity, since these factors can affect the thermal resistance and performance of the wires. Using the automatic design and calculation system has numerous advantages. First, it allows you to significantly reduce the time required for project development and calculations. Instead of manually specifying parameters and performing complex calculations, engineers can use a system that automatically generates solutions. Secondly, the system ensures high accuracy of calculations, reducing the probability of errors that may occur during manual analysis. This contributes to the achievement of high reliability and efficiency of the power transmission system. As part of the scientific research, an approach was proposed, which is based on the mechanical calculation of overhead power line wires using SICAD CAD. The obtained results are presented in the framework of a joint technical meeting of leading specialists of operating enterprises and the team of the department of power supply named after V.M. Sinkova NULES of Ukraine.

Mathematical model of the thermal mode of overhead power lines considering temperature variations along the line length

A mathematical model representing the temperature mode of an overhead power line wire and taking into account the axial heat transfer was developed. Processes in overhead power lines were analyzed using analytical and numerical methods for solving differential equations, including the finite difference method. The equation of thermal conductivity for AS-240/32 and SIP-2 3х95+1х95 wires was solved for the case of current variations along the line length. An analytical solution to the equation of thermal conductivity was proposed for the steady-state operation of an overhead wire under the same current in all sections of the line, taking into account the temperature dependence of active resistance. The results obtained by the analytical method agree well with those obtained by the method of finite differences. The boundary conditions at the beginning and at the end of the line were established to affect the line temperature only within a few meters. At the same time, despite the slight increase in the degree of this effect at an increase in the current due to the temperature dependence of heat emission, it remains small up to emergency level currents. Therefore, the calculations of the line thermal mode require no high accuracy in setting boundary conditions. A line with a uniformly distributed load demonstrates differing results at large current variations along the wire length. Thus, the absolute error of the analytical solution (compared to the finite difference method) for the maximum temperature equals 77.9°C, while the relative error for losses equals 10%. The same errors in temperature calculations for an infinitely long wire in terms of the length function comprise 2.5°C and 0.1%, respectively. Therefore, despite the high thermal conductivity of a metal, a model with a zero thermal conductivity along the wire axis gives more accurate results as compared to a model with an infinitely high thermal conductivity. The obtained results are applicable when clarifying the total loss of active power, as well as for estimating the line capacity according to the maximum permissible temperature, which depends on the type of wires and comprises 70 and 90°C for uninsulated steel-aluminum and self-supporting insulated wires, respectively.

STUDY OF ICE FORMATION PROCESSES ON OVERHEAD POWER LINES AND DEVELOPMENT OF SYSTEMS TO COMBAT THIS PHENOMENON

Icing on the wires of overhead power lines is a big problem to maintain their integrity. The process of icing wires leads to a significant increase in their mass and, accordingly, to large overloads on the wire and electric supports. Exceeding the loads above the permissible ones can cause great damage to power lines. Wires, cables can break, fittings can be damaged and even lead to collapse of electrical poles. At the same time, damage is caused from the undersupply of electricity. This damage may exceed the damage from damage to the elements of power lines. Ice on the wires usually appear in winter, especially when the warming is going to be replaced by a cold snap and the temperature fluctuates around zero. The problem can be exacerbated by strong wind loads. An increase in air humidity also accelerates the formation of an ice "coat" on wires and electrical poles. Under the most unfavorable conditions, the wall thickness of the “fur coat” of ice on the wire can reach more than 70 mm. Such an ice coat can lead to exceeding the maximum permissible loads and damage to the power line, as well as damage from a power outage. The mechanism of ice formation on overhead power lines, as well as negative damage to power lines and high-voltage pylons under the action of ice load, has been studied. An analysis of the known methods of dealing with ice on power lines has been carried out. An innovative device for combating icing formations is proposed. The advantage of the proposed device is the ability to operate in two modes: vibrating and shock-shaking, which expands its functionality. In preventive mode, the device operates continuously due to the interaction with alternating current flowing through the wires of power lines in the normal mode of their operation, without the need for shutdown for maintenance, which gives the electromechanical interactions of devices with the wire of the power line a vibrational character and ensures the continuity of the process of removing water drops from the wires at an early stage before ice formation. Thus, in the preventive mode of operation of the power line, the causes of icing of the wires are eliminated, and not its consequences, which eliminates the need to shut down for maintenance, and reduces the required costs of resources and energy.

Analytical models of movement of wires of air high-voltage power transmission lines

The article PURPOSE with the problem of monitoring the state of high-voltage overhead power lines in order to ensure uninterrupted and reliable supply of consumers with electricity. METHODS. As parameters of the state, the sag, the tensile force and the mass per unit length of the wire hanging in the span are defined. IT IS STRESSED that a complete picture of the state of an overhead line can be established by determining the spectral composition of the wire vibrations using mounted automated multi-parameter sensors with accelerometers as sensors. It is shown that the currently used dynamic models for describing the motion of a wire as a pendulum and as a tightly stretched string are not complete enough to represent the vibrations of the wire in all three spatial coordinates, do not cover vibrations with odd harmonics and symmetrical vibrations. A system of equations has been OBTAINED that makes it possible to describe the spatial oscillations of the wire along all three axes, taking into account the difference in heights of the wire suspension points. IT IS SHOWN that the analysis of the higher harmonics of the spectrum of vibrations of the wire makes it possible to determine all the main mechanical parameters of the wires of overhead power lines.

Simulation of Ice Melting Dynamics on the Wires of Overhead Power Lines and Traction Contact Suspensions

Ice deposits on the wires can lead to their misalignment, convergence, "dance" and rupture, as well as to the destruction of traverses, cantilever structures, brackets and even the supports themselves. The release of wires from the ice can be performed by mechanical, thermal and chemical methods. Heating of wires to prevent ice buildup, as well as the melting of ice on their surface, are thermal methods. In the conditions of digitalization of the electric power industry to select the most relevant melting scheme we should use mathematical models that take into account all the factors of complex processes of heating and melting of ice deposits, as well as modern computer technologies. Such mathematical models can be implemented on the basis of modeling methods for electric power systems and railway traction networks developed at the Irkutsk State Transport University. The article presents the results of research aimed at developing mathematical methods and software for modeling the dynamics of ice melting on wires of overhead power lines and contact suspensions of traction networks. The results of the study enabled us to include in the Fazonord software package a module to calculate ice melting on the wires of overhead power lines and traction networks. It determines the currents in the wires, their temperatures and thickness of the remaining ice buildup above the melted groove. These parameters are calculated for the beginning and for the end of the controlled wire. On this basis, a systematic approach is applied to solve the problem of modeling ice melting processes, since the calculations of thermal processes are based on determining the modes of a complex EPS or a traction power supply system. The use of the developed methods and software will ensure the application of more efficient measures to eliminate icing from power lines and contact suspensions.

APPROACHES OF PROBING SIGNAL TYPE DETERMINATION OF MEANS LOCAL PROBING FOR DISTRIBUTED POWER GRIDS TECHNICAL CONDITION DIAGNOSTIC

The paper presents the modes of ice detection on a 110 kV overhead line. Methods of detecting damage during ice of power transmission wires are analyzed. Proposals for improving the approaches to determining the damage caused by ice on the wires of overhead power lines have been developed. The article focuses on the method of location probing, which consists in applying a pulse signal to the line and determining the total time spent on its propagation along the wire in the forward and reverse directions after reflection from the end of the line or from high-frequency barrier. In the locational method of detecting ice, information about the appearance of ice is carried by pulses reflected from any inhomogeneity of the wave resistance of the line on it. All negative factors, including ice, change the wave resistance of a long line, creating inhomogeneities in overhead power lines and increases the travel time of the reflected pulse of a given section of the line in the presence of ice. They can be determined by active probing. The problem is that these inhomogeneities can be small in amplitude and active sounding is unable to detect the reflected signal from the homogeneity as the power of noise and interference can be greater, and most importantly they can be on branched power lines. The paper shows that increasing the duration of the probing pulse with the use of different types of modulation allows to increase the energy of the probing signal, to provide the required spectrum width and, accordingly, the resolution of the device at a distance. The article proposes a method of taking into account the “blind zone”, in which it is not possible to determine the reflected signals from the place of heterogeneity of overhead power lines. At the time of emission of the probing signal, the input of the receiver is closed and therefore reflected from the homogeneity of the signals do not arrive at the receiver. In FMICW radar, the measurement process to determine the range is to measure the difference between the current frequency of the emitted signal and the frequency of the reflected signal in the ion probe. It is proposed to introduce an algorithm and a method of ionosonde operation for the development of a device for diagnosing the technical condition of electrical distribution networks.