Series compensation protection test platform

Abstract

The invention discloses a series compensation protection test platform, which comprises a high-voltage conversion switching value device, a signal module and a control acquisition module, wherein a signal output end of the high-voltage conversion switching value device is connected with a signal input end of the signal acquisition module, the high-voltage conversion switching value device is usedfor acquiring high-voltage information of a bus; and the signal module performs bidirectional data interaction with the control acquisition module by means of a wireless network, receives data acquired by the signal module, and transmits a control command to the signal module according to the acquired data. The series compensation protection test platform has high degree of automation, can greatlyimprove the inspection speed and efficiency of series compensation protection, and avoid hidden danger of accidents caused by wiring errors.

Description

technical field [0001] The invention relates to the technical field of power protection devices, in particular to a series compensation protection test platform. Background technique [0002] With the continuous development of the grid scale, long-distance, large-capacity, ultra-high voltage power transmission has become an inevitable trend. The capacity of the load side continues to increase, resulting in the transmission capacity of the ultra-high voltage transmission line getting closer and closer to the limit value, and the safety and stability margin of the system continues to decrease. The transmission capacity of EHV transmission lines can be effectively improved through series compensation, so it is widely used in EHV and UHV transmission projects. The control and protection system of the series compensator is the brain and safety center of the series compensator, and is crucial to the reliable and stable operation of the series compensator. The inspection of the s...

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Problems solved by technology

The inspection of the series compensation control and protection system requires an additional test. There are three main methods: (1) use a digital sampling device to sample directly in the small room; (2) use a voltage signal generator on the platform to add voltage to the A / D conversion terminal (3) Use the winding method to add current sampling to the current transformer on the platform; now the first method is the best, but now only the digital sampling instrument for China Power Bridge has been developed, and most other equipment has not been developed; the second The two methods have several disadvantages: a. It is impossible to test the phase-to-phase fault of the line; b. The platform has a lot of interference, and the test is greatly affected by the external environmental conditions; High consumption; the third method has all the deficiencies of the second method, and at the same time cannot simulate high current faults

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