Reactive power compensation device

A compensation device and compensation module technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, circuit devices, etc. The problem of unsatisfactory power compensation effect, etc., can improve the effect of reactive power compensation, good control accuracy, and improve detection efficiency and accuracy.

Inactive Publication Date: 2018-07-20
河南北瑞电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Existing reactive power compensation devices mainly include power semiconductor devices, switching fixed capacitors and reactive power generators, but the reactive power compensation effect of these reactive power compensation devices is not ideal, and cannot solve the harmonic influence generated by power electronic devices, thus There is no guarantee that the system will operate safely and reliably

Method used

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Embodiment Construction

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some embodiments of the invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] Such as Figure 1 to Figure 7 As shown, a reactive power compensation device according to the present invention includes a passive reactive power compensation module, an active reactive power compensation module and a control module, and the passive reactive power compensation module is connected to the power grid in parallel through the control module and the active power compensation module , the passive reactive power compensation module and the active reactive power compensation module are used to compensate t...

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Abstract

The invention discloses a reactive power compensation device which comprises a passive reactive power compensation module, an active reactive power compensation module and a control module. The passive reactive power compensation module is connected in parallel with an active power compensation module through the control module, and accesses a power grid. The passive reactive power compensation module comprises a number of reactive power compensation units. Each reactive power compensation unit is connected with the power grid through a contactor. The active reactive power compensation moduleuses a static reactive power generator. The static reactive power generator is connected with the power grid through a second inductor. The passive reactive power compensation module and the active reactive power compensation module compensate the required reactive power according to the output signal of the control module. According to the invention, the reactive power compensation device is simple in structure, can quickly and accurately compensate the reactive power of the power grid, and can effectively filter the harmonic current contained in a load; the power quality of the power grid isimproved; and safe and reliable operation of the power grid is ensured.

Description

technical field [0001] The invention relates to the field of electric power system power balance, in particular to a reactive power compensation device. Background technique [0002] With the increasingly widespread application of power electronic devices, there are more and more nonlinear loads in the power system, which requires a large amount of reactive power to be supplied to the power system. Since the impedance of the power system network components is mainly inductive, the transmission of reactive power in the power grid will cause the voltage amplitude of the receiving end to be unstable and reduce the transmission capacity of the transmission line. Therefore, maintaining the balance of reactive power in the power system is a necessary condition to ensure the power quality and voltage quality of the power system, reduce the loss of the power grid, and ensure the safe and stable operation of the system. The method to ensure the reactive power balance of the system i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/01
CPCH02J3/01H02J3/1821Y02E40/30Y02E40/40
Inventor 常胜
Owner 河南北瑞电子科技有限公司
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