Method and device for on-site detection of control performance of thyristor valve group of static var compensator

Abstract

The invention discloses a static var compensator thyristor valve block control performance on-site detection method and device. The method includes the following steps: an initialization detection circuit detects and obtains small load voltage U1 and synchronous reference voltage U0 output by a secondary side of a voltage regulator; and initializing and generating a to-be-detected trigger angle set according to a trigger angle range of a detected thyristor valve block, judging whether control performance of the detected thyristor valve block satisfies requirements at different current trigger angles alpha in the to-be-detected trigger angle set according to a difference value of a current trigger angle alpha and an actual trigger angle beta, and if the control performance satisfies requirements at all the current trigger angles alpha, judging that the control performance of the detected thyristor valve block satisfies requirements. The device includes a test power supply, a voltage regulator, a small load, an analog quantity recording module and a detection judgment module. The static var compensator thyristor valve block control performance on-site detection method and device have the advantages of being easy to implement, being suitable for a running field environment, and being low in cost.

Description

technical field [0001] The invention relates to the field of electrical engineering, in particular to a method and device for on-site detection of the control performance of a thyristor valve group of a static var compensator. Background technique [0002] Static var compensator (SVC) has developed into a very mature FACTS device, which is widely used in the generation, transmission and distribution of modern power systems. As one of the most advanced reactive power compensation devices at present, the static synchronous reactive power compensator no longer uses large-capacity capacitors and inductors to generate the required reactive power, but realizes the reactive power through high-frequency switching of power electronic devices. A qualitative leap in reactive power compensation technology, especially suitable for dynamic reactive power compensation in medium and high voltage power systems. As a fast, smooth and controllable dynamic reactive power compensation device wi...

AI Technical Summary

Problems solved by technology

There are many existing detection methods for static var compensators (SVC), but they are generally only suitable for laboratory environments. For example, the patent application number CN200510102658.4 discloses a static var compensator based on multimode optical fiber with photoelectric triggering and detection system; another example is the parameter detection method and system of a wind farm static var compensator disclosed in the patent application number CN201310495202.3; these detection devices and methods are too complicated and cumbersome, and the detection environment and site requirements are high. Not suitable for SVC operation site environment

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