Running-state monitoring method for electric reactor in high-voltage power capacitor device assembly

Abstract

The invention discloses a running-state monitoring method for an electric reactor in a high-voltage power capacitor device assembly, and belongs to the technical field of substation-device on-line monitoring. The running-state monitoring method is characterized by including the following steps that 1001, starting is carried out; 1002, a voltage signal of a substation-bus voltage transformer is obtained; 1003, the running voltage of a high-voltage parallel electric reactor is obtained; 1004, a current signal of a line-discharging-switch-cabinet current transformer is obtained; 1005, inductive reactance and the reactance rate of the electric reactor are obtained; 1006, the change rates of the inductive reactance and the reactance rate of the electric reactor are obtained; 1007, the step 1008 is carried out in the serious state, otherwise the step 1009 is carried out; 1008, a tripping order is emitted; 1009, the step 1010 is carried out in the abnormal state, otherwise the step 1011 is carried out; 1010, alarm is carried out; 1011, running continues to be carried out. On-line monitoring of the electric reactor is achieved, the defect that the reliability is poor when powering-off detection is carried out in the prior art is overcome, and the working safety of the electric reactor and the working safety of the high-voltage power capacitor device assembly are greatly improved.

Description

technical field [0001] The invention discloses a method for monitoring the operating state of a reactor in a complete set of high-voltage power capacitors, belonging to the technical field of on-line monitoring of substation equipment. Background technique [0002] The complete set of high-voltage power capacitors is the most traditional, the most widely used and the largest number of reactive power compensation equipment in the power system. The capacity of reactive power compensation equipment in my country is nearly 1 billion kvar, most of which are shunt capacitor complete sets, which are beneficial to the power system. Safe and stable operation can improve power quality, reduce power loss, increase the transmission capacity of transmission and distribution lines and power transformers, and play a very good role. The availability of capacitive reactive power compensation equipment has become an important technical index for power production management. [0003] The compl...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide an on-line monitoring of the reactor, to avoid the defect of poor reliability in the detection of power failure in the prior art, and to greatly improve the reactor and high-voltage A method for monitoring the operating status of reactors in high-voltage power capacitor complete sets for the safety of the complete set of power capacitors

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