Communication-type intelligent reactive power compensation controller and switching method thereof

Abstract

The invention belongs to the technical field of electrical equipment and discloses a communication-type intelligent reactive power compensation controller and a switching method thereof. The communication-type intelligent reactive power compensation controller comprises a central processing unit, a voltage acquisition module, a current acquisition module, a display device, an alarm output module and a communication serial port. The voltage and current acquisition modules acquire the voltage and current information of a capacitor unit switched into a three-phase power grid and transmits the voltage and current information to the central processing unit. The central processing unit obtains switching control information by using an intelligent coding and fuzzy switching control strategy, andoutputs the switching control information to an intelligent switching power capacitor through the communication serial port in order to control the switching states of the intelligent switches of a plurality of groups of common-compensation and separate-compensation capacitor units. The display device displays the information. The alarm output module gives an alarm. The communication-type intelligent reactive power compensation controller solves the poor compensation precision, the low operational reliability, the single protection function, and no communication and remote monitoring functionof a reactive power compensation controller in the prior art.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a communication-type intelligent reactive power compensation controller and a switching method thereof. Background technique [0002] The existing reactive power compensation controllers in my country generally adopt the control strategy of constant-capacity cycle switching. This control strategy is divided into coarse groups and poor compensation accuracy. Capacitors cannot be used at light loads, resulting in long-term undercompensation of the power system. The average Low power factor. At the same time, common reactive power compensation controllers still have the following defects: simple sampling technology, single control physical quantity, frequent switching or "oscillating switching" phenomenon. The sensitivity is low, and the phenomenon of "refusal to move" will appear when the system is lightly loaded. The anti-interference ability is poor, and there are o...

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Problems solved by technology

[0003] The embodiment of the present application provides a communication-type intelligent reactive power compensation controller and its switching method, which solves the problem of poor compensation accuracy, low operation reliability, single protection function, and ineffectiveness of reactive power compensation controllers in the prior art. Problems with communication and remote monitoring functions

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