Substation Station Research Articles

Comparison of Insulated Switch Gear with Desiccant Addition to SF6 Gas Quality System at Waru Substation

In electrical instrumentality with SF6 gas insulation, the quality of SF6 gas in line with the standard is prime to wise insulation power, if there' a decrease in gas quality, there'll even be a decrease among the number of voltage insulation on electrical equipment. throughout this case, it had been found that the quality of SF6 gas was deteriorating within the Ganz whole GIS Compartment at the Waru Substation Substaction, specifically the position level of the SF6 isolation gas that exceeded the required standard limit. Besides, this GIS isn't equipped with silica gel/desiccant as a condition gripping material and gas sorbent material from amendment PMT (IEEE Std 11251993) that ends throughout a decrease among the standard of SF6 gas. The addition of drier among the GIS is needed to keep up the quality of SF6 gas. These materials are analyzed for quantity and performance once applied within the compartment therefore as that deterioration of the quality of SF6 gas and thus the prevalence of insulation failure is avoided as early as possible, and SF6 remains in its characteristics with a BDV of 78.6 kV/cm (according to SF6 crucial Breakdown Volatge). And it hoped that SF6 gas will add line with it operate as a decent insulating medium. As degree application, a drier experiment has been administered among the GIS compartment at the Waru Substation station

Research on Interconnection Scheme of Renewable Energy in Substation

As one of the carriers of power transmission and transformation in the power system, the traditional substation has a relatively single function. To make full use of renewable energy to generate electricity, the rate of station power consumption needs to be reduced, and the goal of “zero-carbon” substation construction needs to be achieved. The use of renewable distributed power substation station power systems is a valuable research topic. This paper takes the substation as the research object, fully explores the characteristics of the strong flexibility of distributed solar energy, and analyzes the utilization form and access method of renewable distributed energy in the substation. The research station power microgrid system design scheme, mainly including system architecture design, the equipment selection and configuration principles along with the load in the substation station, proposes multiple new energy application scenarios, which have certain reference significance and promotion application value for the future transformation of traditional substations to integrated energy stations with energy interconnection.

Application of Transformer Heat Circuit Model in Power Substation Station Area

The hot spot temperature of transformers operating in the station area is calculated in real-time using the transformer heat path model as it is impossible to measure the internal winding hot spot temperature directly and modifying the transformer will increase the cost. The smart distribution transformer terminal is an important device for collecting and processing data on the side of the distribution transformer, with a container built from Linux inside to run an application (App) with specific functions developed in the Linux environment. Based on that, the heat circuit model of the transformer is developed into an App installed into the container of the smart distribution transformer terminal to realize the function of the real-time computing and warning of transformer hot spot temperature. It is expected to provide some reference for the transformer operating normally and stably.

Research on the Construction of Substation Equipment Model Library Based on BIM Three-Dimensional Modeling

Substation equipment has a large amount of heterogeneous information during its life cycle. However, when Autodesk Revit is used as the modeling software to build a BIM model of traction substation equipment, due to the limited type of model attribute parameters and parameter grouping methods, the model cannot meet the requirements. Requirements for information integration in the entire life cycle of equipment. Based on this, the thesis uses the MVC model of three-dimensional modeling platform and the technical support of synchronous calculation to propose a BIM-based substation equipment graphics calculation system. Taking the common cable trench, cover plate and foundation earthwork calculation in substation station engineering as an example, the realization method of main technology is explained.

Optimization design and development of UHF omnidirectional wideband antenna for PD detection in substation

In order to meet the requirements of partial discharge (PD) detection of electrical equipment in substation station area, the ultra-high frequency (UHF) antenna with broadband, high gain and horizontal plane (H-plane) omnidirectional is studied and designed as a PD sensor. By analyzing the characteristic impedance and structural characteristics of the biconic antenna, it is determined to be an UHF omnidirectional wideband antenna for detecting PD. The influence of structural parameters such as half-cone angle and vertebral body height on the antenna performance is simulated. At last, a double cone antenna is made and its bandwidth, directional pattern, gain and equivalent height are tested.

WPD-ResNeSt: Substation station level network anomaly traffic detection based on deep transfer learning

With the advancement of new infrastructure, the digitalization of the substation communication network has rapidly increased, and its information security risks have become increasingly prominent. Accurate and reliable substation communication network flow models and flow anomaly detection methods have become an important means to prevent network security problems and identify network anomalies. The existing substation network analyzers and flow anomaly detection algorithms are usually based on threshold determination, which cannot reflect the inherent characteristics of substation automation flow based on IEC 61850 and have low detection accuracy. To effectively detect abnormal traffic, this paper fully explores the substation network traffic rules, extracts the frequency domain features of the station level network, and designs an abnormal traffic identification model based on the ResNeSt convolutional neural network. Transfer learning is used to solve the problem of insufficient abnormal traffic labeled samples in substation. Finally, a new method of abnormal traffic detection in smart substation station level communication network based on deep transfer learning is proposed. The T1-1 substation communication network is constructed on OPNET for abnormal simulation, and the actual network traffic in a 110kV substation is fused with CIC DDoS2019 and KDD99 data sets for algorithm performance test, respectively. The accuracy reached 98.73% and 98.95%, indicating that the detection model proposed in this paper has higher detection accuracy than existing algorithms.

A Method for Detecting Parasitic Circuits in the Same DC System

In the electric power system, The DC power supply system used in substation station in power system is related to the normal operation of primary and secondary equipment in substation, and its importance is self-evident?Therefore, in the early power design of substations, the dual-loop power supply mode is specially designed for some important loads or equipment in order to ensure the reliability of power supply for these important loads?However, due to the construction of lines, maintenance of equipment, equipment failure, and management is not in place, design drawings are missing and other reasons, often lead to some load parasitic loop phenomenon?Because of the existence of parasitic circuit, it will cause some hidden dangers to the DC power supply system?Therefore, the detection of parasitic circuits is also one of the most concerned issues in the field of electric power engineering, which needs further extensive and in-depth study?

Discussions on the Main Electrical Wiring Scheme for a 400 MW Offshore Substation Station

Discussions on the Main Electrical Wiring Scheme for a 400 MW Offshore Substation Station

Substation Area Backup Protection Algorithm for Phase Comparison of Segregated Current Fault Component

Substation area backup protection currently only relies on the traditional relay protection principle, and does not fully exploit the inherent fault characteristics in the multi-source data of the station domain. In response to these problems, this paper proposes a substation area backup protection algorithm for phase comparison of segregated current fault component. The algorithm takes all electrical elements in the substation station as the protection object. In light of the phase relationship between external faults and internal faults of the protected electrical elements, the phase relationship is quantified and the fault elements are identified according to the quantified results. A typical 220 kV intelligent substation model was built by using electromagnetic transient software PSCAD. The different fault types, fault locations and transition resistance operating states were simulated. The results show that the fault recognition method based on substation area backup protection for phase comparison of segregated current fault component is accurate and effective.