Comprehensive testing system and method for digital electric energy metering equipment

A technology of electric energy measurement equipment and comprehensive testing, which is used in the measurement of electrical variables, measurement devices, instruments, etc.

CN109031182APending Publication Date: 2018-12-18STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-12-18

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Abstract

The invention discloses a comprehensive testing system for digital electric energy metering equipment. The comprehensive testing system comprises a physical circuit unit, a simulation load, a measuredmetering equipment unit, a comparison metering standard unit, a data transmission network, a data analysis unit and a synchronous time check unit. By constructing a physical moving die system, a linevoltage and a load current close to the real operation condition are generated; an environment closer to the actual operation condition is provided for testing existing equipment or verifying the performance of self-research equipment; and the system can be used for not only testing of single metering equipment but also electric energy metering system-level testing, thereby being beneficial to the promotion of digital electric energy metering technology research and application.
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Description

technical field

[0001] The invention relates to a comprehensive testing system and method for digital electric energy metering equipment, belonging to the technical field of intelligent power systems. Background technique

[0002] In recent years, with the vigorous promotion and construction of smart substations, great breakthroughs and developments have been made in the primary and secondary equipment of substations. profound changes. The digital energy metering system adopts digital and networked data transmission methods, which is more suitable for the development requirements of the smart grid.

[0003] Since 2016, my country has accelerated the construction of a smart grid digital energy metering system. Taking the State Grid Corporation as the vanguard, the Marketing Department of the State Grid Corporation has issued a series of documents to guide provincial power companies to carry out the pilot construction of digital electric energy metering equipment testing sys...

Examples

Embodiment 1

[0059] Taking the verification of the third-generation smart substation electric energy metering technical solution as an example, a digital electric energy metering comprehensive test system was built, and the performance test of the metering system was carried out. The specific one-time connection selection is a typical bridge connection that is mostly used in 110kV substations. Such as figure 2 As shown, the bridge connection adopts a double busbar structure, namely I busbar and II busbar. The double busbars are connected or disconnected by switch K1. When one side of the power supply is lost, the other side is powered by the power supply. The measurement transformer is generally configured with busbar PT1 (voltage transformer, Potential transformer, PT), busbar PT2, line CT1, line CT2, and inner bridge CT0 (current transformer, Currenttransformer, CT).

[0060] If a set of electric energy metering system is arranged at the high-voltage side metering point of main transfor...