Novel electric energy quality protection system

A power quality and protection system technology, applied in flexible AC transmission systems, emergency protection circuit devices, electrical components, etc., can solve the problems of large protection range, poor anti-interference performance, low reliability, etc., to solve the three-phase imbalance , the effect of reducing harmonic distortion and improving power factor

Inactive Publication Date: 2018-08-21
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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Problems solved by technology

[0004] The main purpose of this application is to provide a new type of power quality protection system to solve the problem that the traditional power quality protection system has poor anti-interference performance and low reliability. Due to the current limit, the protection range is too large, and technical problems such as the safety of several equipment cannot be reliably guaranteed.

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Embodiment Construction

[0023] It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0024] In order to overcome the shortcomings of the current traditional power quality protection system for harsh environments, strong interference, and power quality protection for large and medium-sized motors. The embodiment of this application provides a new type of power quality protection system, such as figure 1 Shown is a schematic structural diagram of a new power quality protection system in the embodiment of the present application, including a filter module 11 , a compensation module 12 , a relay protection module 13 , and a monitoring module 14 .

[0025] The filter module 11 is used to detect the harmonic current generated by the load on the power grid in real time, and generate a compensation current that is equal to the load harmonic and has an opposite phase to the power grid so as to offset...

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Abstract

The invention discloses a novel electric energy quality protection system, and relates to the field of electric energy optimization. The system comprises a filter module, a compensation module, a relay protection module and a monitoring module; according to the novel electric energy quality protection system, through the mutual cooperation of the four main functional units, the system can increasea power factor, reduce harmonic distortion and solve the problems of three-phase unbalance and voltage fluctuation flickering. The novel electric energy quality protection system solves the technicalproblems that traditional electric energy quality protection systems are poor in anti-interference performance and low in reliability, and in terms of protecting large-sized motors, the protection range and operation time can be limited by starting current of the motors, so that the protection range is too large, and the safety of equipment cannot be reliably guaranteed.

Description

technical field [0001] The present application relates to the technical field of power optimization, and in particular to a power quality protection system. Background technique [0002] The traditional power quality protection system adopts high-power shut-off power electronic technology, which can quickly and continuously compensate reactive power, accurately control system voltage and power factor, filter out power harmonics, purify power supply, and balance three-phase loads. Reduce line loss, prolong the service life of power equipment, and solve power quality problems such as reactive power, harmonics, voltage fluctuations, and three-phase unbalance in the distribution network. [0003] However, the existing power quality protection system has poor anti-interference performance and is susceptible to interference from other power components; at the same time, it cannot adapt to harsh environments and has low reliability. The range is small, and the on-duty personnel ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01H02J3/18H02J3/26H02H7/085H02H7/09
CPCH02H7/085H02H7/09H02J3/01H02J3/1842H02J3/26Y02E40/10Y02E40/20Y02E40/50
Inventor 梅兴鹏单海欧
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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