Electric reactive compensating controller

Abstract

The invention relates to a power reactive compensation controller which belongs to the field of power technology and comprises a low voltage distribution network reactive compensation module and a main control module. The low voltage distribution network reactive compensation module comprises a voltage detection module, a power factor detection module and a single chip microcomputer, wherein, the voltage detection module and the power factor detection module respectively measure the voltage and power factor angle, and the single chip microcomputer calculates the capacity that needs reactive compensation; the main control module comprises a watch dog circuit module, a keyboard input module, a display module, a voltage and current A/D module, a serial communication circuit module and a lower layer controller serial module, wherein, the watch dog circuit module has the function of protecting the circuit; the keyboard input module and the display circuit module can realize man-machine communication; the serial communication circuit module is responsible for transferring data information of the capacity that needs reactive compensation in the single chip microcomputer to the lower layer controller serial module; the lower layer controller serial module controls a compensation capacitor group. The power reactive compensation controller can enhance the power factor of users at low voltage side of the distribution network.

Description

technical field [0001] The invention relates to a control device in the technical field of electric power, in particular to an electric reactive power compensation controller. Background technique [0002] In the power system, common reactive power control methods include synchronous generators, synchronous motors, synchronous condensers, shunt capacitors and static var compensation devices, etc. Shunt capacitors are the most widely used reactive power compensation equipment in distribution networks. In the case of similar effects, the cost is far lower than that of synchronous condensers, so it has replaced synchronous condensers in a large area. Using parallel capacitors for reactive power compensation is the most widely used reactive power compensation method. When configuring reactive power compensation equipment, in principle, comprehensive planning, reasonable layout, hierarchical compensation, and local balance should be required. At present, in my country's cities ...

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