Control method of hybrid active power dynamic filter based on energy storage

Abstract

The invention provides a control method of a hybrid active power dynamic filter based on energy storage. The method comprises the steps of connecting a passive filter LC with an active power filter APF in series; detecting the active power change in the power system, and compensating the fluctuation and impact of the active power by using the energy storage device through the four-quadrant control capability of the APF so as to enable the system to operate stably. The device comprises a fifth harmonic passive filter circuit, a seventh harmonic passive filter circuit, an IGBT switch active filter circuit, a PWM driving circuit, a power factor adjustment and instantaneous reactive compensation data signal processor control circuit, a harmonic suppression data signal processor control circuit, a non-linear load total current and total voltage dynamic detection circuit, and a reverse-phase multiple harmonic total current and total voltage value output circuit. Abnormal states of active power impact, fluctuation, unbalanced operation and the like are effectively eliminated, a large amount of information streams can be received and transmitted, and the device plays a greater role.

Description

[0001] This application is a divisional application of a patent application titled "Control Method and Device for Hybrid Active Power Dynamic Filter Based on Energy Storage". The original application date was November 21, 2018, and the application number was 201811387722.1. technical field [0002] The invention relates to a control method of a hybrid active power dynamic filter based on energy storage, which belongs to a control method of power quality used in a distribution network for accommodating renewable energy. Background technique [0003] The power quality of the power supply and distribution system is directly related to the stability of the power system, the safety of electrical equipment, and whether it is economical to use electricity. With the increasing use of power electronic devices and sensitive loads, the power quality problem has become the primary technical issue concerned by the international power supply community. In the power system of the world, th...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical difficulties that the existing APF is difficult to work in the 35KV and above voltage grid, and cannot completely solve the active power impact and fluctuation of the power distribution system, and provide a kind of APF that can work in the 35KV and above voltage grid Control method of hybrid active power dynamic filter electrical energy (HAPDFEE for short) based on energy storage

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