Electric Energy Metering System And Functions Of The Implementation Of Access Solutions

Abstract: The article reviewed the summary of electric energy metering system of

the development process, proposed the design principle of the system, analyzes its main characteristics and the functional implementation. And all existing access programs are summarized and compared, and finally, on the future development of a series of recommendations for personnel information.

Key words: electric energy; metering system; access program; function implementation

1 Introduction Current domestic electric energy metering system after nearly 20 years of development, has entered a stable growth phase, the net of provincial power grid and electricity for the major cities are equipped with electric energy metering system. And there to the district and county for the development trend of network penetration rate is increased every year.

Electric energy metering function has become the SCADA, AGC function after another dispatching automation of basic functions, and power as a commodity to market in the process of playing an important role.

With the power industry system continued to deepen, network operations and management is gradually opening up to the market, in order to achieve a fair, just and open the electricity trade principles, the importance of electric energy metering system is more than ever prominent [ 1] To this end, research design, manufacturers and power companies at all levels have put a lot of human and financial resources to carry out this research and development and engineering implementation.

Electric energy metering system is mainly to achieve power plant is connected, the net and tie-line crossing points, the measurement of electric energy, sub-time storage, collection and processing, billing and analysis for the basic data. If the metering and billing system, the model also includes the support of various rates and billing software [1].

The last century, the development of electric energy metering system has undergone two stages of the process. The first phase (of the 20th century the seventies and eighties): electric energy collection and statistical processing only as SCADA / RTU a feature. Equipment due to capacity constraints at that time, the acquisition accuracy, data reliability, continuity, there are many problems. Therefore, only as a SCADA system to monitor operating conditions of the use of power, far from the electric energy metering and billing requirements.

Electric energy at remote data with the conventional use of the same communication protocol, information from the same RTU transmission via the same channel, the master station system by "reading freeze thaw" method of Statistics and processing. As the RTU mode of data storage capacity and remote communication protocol is not supported by minute / hour defined acquisition cycle, large capacity storage and a large batch of data transmission, in particular channel, master station system or their own failure or RTU routine maintenance will also affect the accuracy of the data of electric energy, reliability and continuity.

Second stage (of the 20th century since the 90s) well-known international companies such as L & G, ABB, UTS has introduced independent of the original such as SCADA / RTU system dedicated electric energy metering system. There is also the late 20th century, introduced the 90 developed by the electric energy metering system such as PBS-2000, DF-6000 and so on. Its characteristics are the main points by an independent system, a special collection terminal or the power consumption scale, using a dedicated channel (line public telecom network, data communication networks, etc.), a dedicated communication protocol such as IEC60870-5-102, TCP / IP, etc. to carry out electric energy collection, calculation and statistical evaluation, to meet the electricity market, "separation of generation, bidding" needs of the commercial operation of the [1,2].

At the same time, in order to ensure system reliability, security, accuracy requirements, the related high-tech such as Trucluster (cluster) technology, three-tier architecture and DCOM components, COM +, Internet / Intranet and Web browsing device, network security technologies have been applied [1-3].

2 electric energy metering system design principles

2.1 Electric energy metering system to be designed as an independent and complete system

View of the power companies at all levels is based on electric energy as its billing, appraisal, reward and punishment is based primarily on

by: fdgbg

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