Comprehensive error offline measurement system for metering secondary circuit metering device of intelligent substation
A technology of intelligent substation and secondary circuit, applied in measuring devices, measuring electrical variables, instruments, etc., can solve the problems of lack of accuracy, time-consuming and laborious, and achieve the effect of easy portability, lower production cost, and no zero-crossing distortion.
Pending Publication Date: 2018-08-03
STATE GRID SHANXI ELECTRIC POWER COMPANY CHANGZHIELECTRIC POWER SUPPLY
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Problems solved by technology
This method is time-consuming and laborious and has no accuracy at all. Therefore, it is imperative to develop a device that can measure the comprehensive error of the secondary circuit metering device of the smart substation.
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[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] Such as Figure 1-2 As shown, the comprehensive error off-line measurement system of the secondary circuit metering device of the smart substation includes a voltage release car 2 , a portable electric energy metering secondary circuit verification device 3 and a pulse wireless transmitter 8 of a digital electric energy meter.
[0026] The portable electric energy metering secondary circuit verification device 3 includes a three-phase AC ...
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The invention relates to the technical field of electric energy metering testing and specifically relates to a comprehensive error offline measurement system for a metering secondary circuit meteringdevice of an intelligent substation. The system includes a voltage wire barrow, a portable electric energy metering secondary circuit calibration device and a digital electric energy pulse wireless transmission terminal. The voltage wire barrow is connected with a PT terminal box. The portable electric energy metering secondary circuit calibrating device is connected with a CT terminal box. The voltage wire barrow is connected with the electric energy metering secondary circuit calibrating device. The digital electric energy pulse wireless transmission terminal is connected with a to-be-testeddigital electric energy. The digital electric energy is connected with a switch. The switch is connected to the PT terminal box and the CT terminal box at the same time such that a circuit is formed.According to the invention, analog quantity is output directly for measurement, comprehensive errors of the metering secondary circuit metering device of the intelligent substation are measured in anoffline condition, field detection complexity is simplified, defects of traditional measurement methods are made up and an important guarantee is provided for stable and safe operation of the intelligent substation.
Description
technical field [0001] The invention relates to the technical field of electric energy measurement and testing, in particular to an off-line comprehensive error measurement system of a secondary circuit measurement device of an intelligent substation. Background technique [0002] With the further deepening of the application of IEC61850, a considerable number of pilot smart substations have been built in China, which are basically smart substations in the mode of "traditional transformer + analog input merging unit". [0003] At present, there is no mature detection equipment for the comprehensive error detection of the metering device of the secondary system of smart substation metering. The information in the meter is used to judge whether the digital information transmission of the secondary circuit of the metering unit to the digital meter is smooth, and the voltage and current value displayed by the digital meter is compared with the voltage and current value of the tr...
Claims
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IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 刘焕磊贺晋宏康健任志强王晓东李育灵杨林涛王婵琼史志鹏
Owner STATE GRID SHANXI ELECTRIC POWER COMPANY CHANGZHIELECTRIC POWER SUPPLY