Electric Power Information Research Articles

Heterogeneity and typology of product innovation in embedded software: the case of Japanese automotive software

We are currently in surroundings with ubiquitous software-embedded products, while there is less understanding on innovations of the invisible embedded software (ESW). Because of its significant role in automobiles and big market share in the Japanese ESW sector, automotive software (ASW) is selected as the case for our research on heterogeneity and typology of product innovation in ESW. Based on the embedded nature of ASW, the role of Japanese automobiles in the USA and the advantage of using patenting in large third countries as a good proxy measure for national innovation activities, we employ ASW-related patents in the USPTO patent database as an indicator of ASW product innovation. Through analysing the heterogeneities of product innovation in terms of function and actors’ innovation activities over the period 1981–2010 by classifying ASW functions into fields of power train control, battery and electric power control, safety control, body control and information communication and telecommunication system, we extract the product innovation typology of ESW and conclude that the heterogeneous requirements for real-time operation and accumulation of specific knowledge are the main reasons of heterogeneity of product innovation in ESW. These results imply different R&D strategies and innovation trajectories.

Design of the Remote Wireless Meter Reading System Based on GPRS

Smart grid is the focus development direction of the national power grid construction, and remote power information collection is the important part of smart grid. The existing automatic meter reading system of remote electric power information collection has such problems as high cost, big power consumption, small networking and big line interference etc. Aim at these features, this paper proposes a new scheme of wireless meter reading based on GPRS, that is, the wireless communication module MC55 of SIMENS and STC89C58RD single chip are adopted as the core to develop a set of remote wireless meter reading system. The paper mainly introduces the overall design of the system, the hardware circuit and software design of each component, and the major software flow chart is given. The system has the characteristic of low cost, low power consumption, ad-Hoc network, self adaption, etc, and it has the strong portability and compatibility. Field test results show that the wireless meter reading system can finish the data collection and transmission task quickly and accurately, and has strong anti-interference ability and wide applicability. DOI: http://dx.doi.org/10.11591/telkomnika.v11i11.2946 Full Text: PDF

Research and Construction of Information Security Simulation Test Bed for Electric Power System

Electric power system relies heavily on common information technologies and platforms, so all common information security issues have been experienced in the electric power information system. Because of attacks destructivity and uncontrollability, it is inappropriate to conduct security analysis in a real Power system directly. Therefore, the paper uses simulation and emulation technology to build a information security test bed for power system at a lower cost and no affect the normal operation and the premise of the aimed system. Simulation contents in the test bed are arranged in four different layers including firmware layer, system layer, network layer and application layer. The test bed also provides a network attack and defense combat system. The test bed can be used for Power system information and network system security testing, engineering validation and evaluation.

Research on Visual Design of Information Management System for Overhead Distribution Lines

Based on the characteristics of overhead distribution lines, according to the principles and methods of the 3ds Max software to create 3D model, this paper introduces how to solve the key issues for the visualization of the management system of overhead distribution lines. The process of the study shows that use 3ds Max turning, lofting and boolean functions, to draw 3D model of the overhead distribution line irregular shape parts is simple and feasible, make whole 3D model and video, can display a vivid of the various components of overhead distribution line. Enables managers to query data more intuitive, and provide a reference for management decision-making, research results can be applied in other electric power information management system design.

A Model of Trusted Network for Electric Power Information Network

A Model of Trusted Network for Electric Power Information Network

SPA Comprehensive Evaluation Model and its Application in the Risk Assessment of Electric Power Information Network

To enhance the electric power information network’s defensive capability for all kinds of security threats, this paper builds a risk assessment model for information network based on the Set Pair Analysis (SPA) comprehensive evaluation. On the basis of SPA theory, the information network’s index and the index of ISO/IEC27005 were formed as a set pair. The model introduced the improved AHP to determine the weight of each index, and extended the Spa’s three-Yuan connection degree to five-Yuan, which considered synthetically to the risk’s certain and uncertain factors. By calculating the connection degree, it can determine the risk value and level. Set pair situation was used to discuss the risk development trend. From practical calculation and the comparison with other assessment algorithm, the model appears simple and reasonable, and the calculation is objective and stable.

Intelligent Inspection System on Information Equipment in Smart Grids Based on IOT

To automatically obtain the real-time data of electric power information equipments and improve management level on intelligent inspection, a technical framework based on internet of things (IOT) is provided for information equipment inspection in electric power system. It provids new data sources efficiently and improves intelligent inspection level. Architecure of the proposed three layer framework is given. And key technologies and functions are discussed. Finally three layer software constuct is illustrated. After the upgrading the existing system, the results show inspection system based on IOT is more secure, reliable, and easy to use and maintain. All of these features embody the meticulous management of information equipment. The study accelerates the application of IOT in smart grids.

Research and Design of the Security Area Classification Model of Electric Power Information System

Because of the special position of electric power industry in national economy and social life, electric power information security has been given particular attention. In recent years, the security defense of Electric Power Information System has been all under the principle of security area classification, which applies different security defense measures for the information systems in different security level. However, because of lacking theory guidance, the recent method of security area classification is not in accord with the requirements of real production and management, and security threaten occurs at times. In order to meet the requirements of real production and management and the needs of security area classification defense in Electric Power Information System, based on the theory of network business security, a new security area classification model of Electric Power Information System has been proposed, and the access rules of the information transmission and sharing between different security areas have also been proposed. The new security area classification model can provide theoretical basis for security area classification in Electric Power Information System, and can deal with the conflict between the requirements of real production and the needs of information security.

The Design of Electric Power Information Equipment Management System Based on RFID Technology

This article describes an information management system for the design of equipment and carried out in the power state companies. From software design to software development, and ultimately the results of completion,this system is of integration of today's most advanced technology RFID, with a three-dimensional structure, the use of personnel to operate on it. The system has the quick search features such as faults and statistics, this can shorten the time for fault location, greatly improved work efficiency.

스마트 그리드 환경을 위한 원격 사용자 접근제어 메커니즘

Smart grid is the next generation intelligent power grid that combines the existing electric power infrastructure and information infrastructure. It can optimize the energy efficiency in both directions, suppliers and power consumers to exchange information in real time. In smart grid environments, with existing network security threats due to the smart grid characteristics, there are additional security threats. In this paper, we propose a security mechanism that provides mutual authentication and key agreement between a remote user and the device. The proposed mechanism has some advantages that provides secure mutual authentication and key agreement and secure against a replay attack and impersonation attacks.

Grey Evaluation Method on Security Risk Assessment of Power Information System

As information technology is widely used in electric power field, security risks penetrate into all aspects of electricity production and operation, meanwhile, complexity of electric power information system make it's very difficult to guard against security risk. Information security risk assessment is the foundation and the precondition of information system security. In this paper, combining long-term power information security supervision practice, we give a multi - hierarchy and multi - attribute index system of information security risk evaluation, and point out these indexes are characterized with grey, fuzzy and difficult to quantify. Then, the analytic hierarchy process (AHP) and the theory of grey system are introduced in setting up a comprehensive evaluation model, we obtain the final score using the information fusion of different experts. Additionally, an application example is used to illustrate the availability of the proposed evaluation method. The result shows that grey evaluation which combines advantages of the qualitative and quantitative methods can be applied to risk evaluate of information system more accurately and scientifically. Meanwhile the evaluation results can help supervisors judge which is the necessity to improve.

전력수용가포털을 위한 구내 통신 및 컴퓨터 네트워크 용량 설계

Consumer Portal is defined as combination of hardware and software that enables two-way communication between energy service provider(ESP, like KEPCO) and equipment within the consumer`s premises. The portal provides both a physical link(between wires, radio waves, and other media) and a logical link(translating among language-like codes and etiquette-like protocols) between in-building and wide-area access networks. Thus, the consumer portal is an important, open public shared infrastructure in the future vision of energy services. In this paper, we describe a new methodology for local communication and computer network capacity design of consumer portal, and also presents capacity calculation method using a network system limitation factors. By the approach, we can check into the limitations of existing methods, and propose an improved data processing algorithm that can expand the maximum number of the networked end-use devices up to times. For validation, we applies the proposed methode to our real system design. Our contribution will help electrical power information network design.

Critical infrastructures: the need for international risk governance

Infrastructures (e.g., electric power system, transportation system, information and communication systems) were not designed as integrated systems, as they are operating today. Some infrastructures, e.g., energy, water supply and telecommunications, are so vital and ubiquitous that their incapacity or destruction would affect security and the social welfare of any nation and cascade across borders. They are exposed to multiple threats (terrorist attacks, natural disasters, institutional changes) and their failure might induce risks to other interconnected systems. The paper outlines the urgent need to address such problems with appropriate risk governance and in-time policy analysis at an international level.

Electricity market trading

A revolution is occurring in the way electricity is bought and sold. The principles of competitive market economics are being applied to electricity trading like any other market commodity, such as stocks and shares, oil, currency or gold bars. Harnessing the technical achievements of electrical power engineers and information and communication technologies will progressively allow market trading and power exchanges to become the dominant means for buying and selling wholesale electricity worldwide. This paper discusses the evaluation of electricity market trading in England and Wales, NETA (new electricity trading arrangements), system operator, power exchanges and contracts, and electricity trading in Nordic countries and California. In particular, the problems occurring in the Californian market are discussed.

Optical electric-power-sensing system using Faraday and Pockels cells

We present what to our knowledge is a novel optical electric-power-sensing system that uses a cascade of a Faraday cell and a Pockels cell. According to Jones-matrix analysis, the electric-power information is contained in the intensity of the emerging light. An instantaneous ac electric-power signal has been observed in real time, and the active power has been measured in the 0-1-kW range. The experimental results are in good agreement with the theoretical analysis and prove the feasibility of the optical sensing system.

Electrical Systems Via Couplers

This paper discusses the system requirements for electrical power and control information that need to be transmitted along the train and looks at some of the problems and limiting factors connected with these systems.

Prepayment for electric service with the PowerStat

The PowerStat is an electric power information and control system designed to reduce electric costs to the consumer. The system eliminates conventional meter reading and billing schedules and allows the consumer to pay for his electricity at any time and on any regular or random schedule desired. The PowerStat is owned by the utility company and installed in each residence or place of business to provide the consumer with a continuous display of his electric power status. It also shows the amount of electricity available and alerts the consumer when it is time to buy additional power. Testing and evaluation have been underway since February, 1986. Consumer response has been excellent, and early results indicate some reduction in power costs. >