Synchronous compensator rotor turn-to-turn short circuit fault diagnosis method and device and storage medium

A technology of inter-turn short circuit fault and diagnosis method, which is applied in the direction of measuring device, motor generator test, instrument, etc., can solve problems such as large mechanical vibration, winding temperature rise, shutdown accident, etc., and achieve high real-time effect

Active Publication Date: 2019-10-01
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +4
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Problems solved by technology

However, the fault will cause the temperature of the winding to rise and the large mechanical vibration, which will further damage the insulation of the winding, make the fault worse, and even cause a more serious shutdown accident
[0004] Since the new synchron

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  • Synchronous compensator rotor turn-to-turn short circuit fault diagnosis method and device and storage medium
  • Synchronous compensator rotor turn-to-turn short circuit fault diagnosis method and device and storage medium
  • Synchronous compensator rotor turn-to-turn short circuit fault diagnosis method and device and storage medium

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0036] The method for diagnosing the inter-turn short circuit fault of the synchronous condenser rotor provided by the embodiment of the present invention includes the following steps:

[0037] Step 1: When the synchronous condenser is running steadily, collect the following electrical parameters of the synchronous condenser: reactive output power, excitation current, rotor speed, stator terminal voltage, and direct-axis synchronous reactance and direct-axis synchronous reactance when the synchronous condenser does not fail. Shaft armature reaction reactance;

[0038] For the collection of the above electrical parameters, the embodiments of the present invention do not need to install additiona...

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Abstract

The invention discloses a synchronous compensator rotor turn-to-turn short circuit fault diagnosis method and device and a storage medium. The method comprises the steps of acquiring the electric parameters such as reactive output power, exciting current, a rotor rotation speed and stator end voltage of a synchronous compensator and direct-axis synchronous reactance and direct-axis armature reaction reactance when the synchronous compensator does not break down under a stable operation state of the synchronous compensator; calculating a rotor turn-to-turn short circuit fault short-circuit ratio of the synchronous compensator according to the acquired electric parameters; and carrying out rotor turn-to-turn short circuit fault diagnosis on the synchronous compensator according to the short-circuit ratio. According to the method and device and the storage medium, the rotor short circuit faults can be online judged through the electric monitoring quantities during the stable operation ofthe synchronous compensators.

Description

technical field [0001] The invention relates to a method, a device and a storage medium for diagnosing a short-circuit fault between turns of a rotor of a synchronous condenser, and belongs to the technical field of motors. Background technique [0002] With the development of DC UHV transmission technology, large-capacity new condensers have become the best choice to meet the reactive power dynamic requirements of the system, and are gradually put into operation in DC UHV converter stations. The operation of the synchronous condenser can maintain the stability of the system voltage when the system fails, and provide the system with short-circuit capacity, which has a strong support for the transient variables of the system. However, the failure of the synchronous condenser will affect the power system. Steady-state operation has a greater impact. [0003] Since the rotor will bear greater mechanical stress and thermal stress during the operation of the condenser, compared ...

Claims

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Application Information

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IPC IPC(8): G01R31/34
CPCG01R31/346
Inventor 蔚超林元棣王伟田伟杰王同磊李栋李建生王胜权吴益明姚廷利孙磊陆云才
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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