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Transient-state waveform analysis system based on electronic mutual inductor

An electronic transformer and transient waveform technology, which is applied in the direction of instruments, measuring electricity, and measuring electrical variables, etc., can solve the problems of not being able to provide high sampling accuracy and time response, so as to solve the problem of sampling accuracy and time response, and improve sampling Accuracy and anti-interference, improve the effect of protection performance

Active Publication Date: 2013-06-12
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO +2
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Problems solved by technology

[0004] The purpose of the present invention is to provide a transient waveform analysis system based on electronic transformers, which overcomes the shortcomings that traditional transformers cannot provide high sampling accuracy and time response. The present invention utilizes electronic transformers and high-precision Photoelectric conversion sampling device, capable of high-precision data sampling at the moment of switch action, a waveform analysis system for capturing and analyzing SMV9-2 messages in IEC61850 through background software processing technology

Method used

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  • Transient-state waveform analysis system based on electronic mutual inductor
  • Transient-state waveform analysis system based on electronic mutual inductor
  • Transient-state waveform analysis system based on electronic mutual inductor

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Embodiment 1

[0023] Such as figure 1 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, it is applied to a transient waveform analysis system based on an electronic transformer, including an electronic transformer device 1, a high-precision sampling device 2 and a waveform analysis device 3; wherein the electronic transformer device 1 passes through an optical fiber It is connected with the high-precision sampling device 2; the electronic transformer device 1 is also connected with the bus AC voltage input module 4 through a line. Electronic transformer device (electronic photoelectric current and voltage transformer, referred to as "photoelectric transformer") 1 is a hybrid AC current and voltage transformer realized by using Rogowski coils based on the principle of electromagnetic induction and cascaded capacitive voltage dividers. Such as image 3 As shown, the electronic transformer device 1 includes a sensor head part 10 and a combiner (OEMU) 5; the sensor head ...

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Abstract

The invention discloses a transient-state waveform analysis system based on an electronic mutual inductor. The transient-state waveform analysis system based on the electronic mutual inductor comprises an electronic mutual inductor device, a high-precision sampling device and a waveform analysis device, wherein the electronic mutual inductor is connected with the high-precision sampling device via an optical fiber; the high-precision sampling device is connected with the waveform analysis device via an optical fiber; and the electronic mutual inductor device 1 is also connected with a bus alternating-current voltage input module via a line. According to the transient-state waveform analysis system based on the electronic mutual inductor, which is disclosed by the invention, not only the defects that the traditional mutual inductor can not provide higher sampling precision and time response are overcome, but also the data can be stored in a comtrade file format by the waveform analysis device, and the comtrade file format can be checked as postmortem analysis and also can be provided for other mainstream manufacturer analysis systems to serve as a data source.

Description

technical field [0001] The invention relates to a transient waveform analysis system based on an electronic transformer. Background technique [0002] Electronic transformers are important primary equipment of the power grid. They are responsible for the precise "measurement and metering" of the power grid and the role of "monitoring" for faults. It is required that the measured grid operating parameters be highly accurate; the device itself should have considerable reliability. It is for smart grid, digital relay protection, grid real-time PMU, WAMS, grid fast state estimation, grid transient stability monitoring, corona measurement of UHV transmission line, grid real-time economic dispatch, application of harmonics in grid, Reliable guarantees are provided for the mitigation of grid transmission congestion, the phase-separated transmission technology for solving the problem of transmission corridors, the realization of accurate fault location and compact primary smart dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 汪彦陈晓宇朱重阳蔡重凯程华明李电刘恢李云飞秋勇金百荣洪金琪吕丹
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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