Closed-loop testing system for simulating static synchronous compensator and testing method of same

Abstract

The invention relates to a closed-loop testing system for simulating a static synchronous compensator (STATCOM) and a testing method of the closed-loop testing system. The testing system comprises a real-time digital simulator (1), port hardware equipment (2) and actual control protection equipment (3) for the STATCOM with a high-capacity chain structure, wherein the real-time digital simulator (1) is connected with the actual control protection equipment (3) for the STATCOM with the high-capacity chain structure through the port hardware equipment (2), thereby forming the closed-loop testing system. The closed-loop testing system and the testing method of the closed-loop testing system disclosed by the invention can be adopted to simulate the operating environment when the STATCOM with the high-capacity chain structure is accessed into a power grid in a more real way in a laboratory and conveniently and fast modify parameters of primary equipment like the STATCOM and the like and a topological structure of the power grid into which the STATCOM is accessed; besides, the invention has the characteristic that closed-loop testing system and the testing method of the closed-loop testing system can carry out test according to various control modes and the rapid dynamic reactive power compensation property of the STATCOM as well as the function and the dynamic property and the like of the control protection of the STATCOM. The invention discloses the closed-loop testing system and the testing method of the closed-loop testing system which are convenient and practical.

Description

technical field [0001] The invention is a closed-loop test system and test method for simulating static synchronous compensators, in particular a closed-loop test system and test method for real-time simulation of STATCOM devices with large-capacity chain structures, belonging to STATCOM device control The innovative technology of the closed-loop test system of the protection system and its test method. Background technique [0002] Ensuring the voltage stability of the power system is the basic condition for the safe and stable operation of the power system, and reactive power compensation is an important means to improve voltage stability. Commonly used reactive power compensation methods include capacitor compensation, static var compensation (SVC), synchronous condenser compensation, static synchronous compensation (STATCOM), etc. The advantage of capacitor compensation is good economy, but the disadvantage is that the compensation switching speed is slow (second level)...

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Problems solved by technology

[0005] Due to the above reasons, if the control and protection system of the STATCOM device is tested with a dynamic model system scaled down by a certain ratio, there is a risk of damage to the valve group unit, and the construction period for changing the dynamic model equipment and parameters is long, resulting in uneconomical testing , and t

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