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Harmonic protection method for power distribution system of shopping mall

A technology for harmonic protection and power distribution systems, applied in harmonic reduction devices and AC networks to reduce harmonics/ripples, etc., can solve problems such as the influence of harmonic modulation in power distribution systems, and achieve the effect of eliminating grid harmonics

Active Publication Date: 2014-06-04
浙江尼古拉斯电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the same time, since the harmonic protection device often needs abnormal working conditions such as charging and maintenance when it is applied, these conditions will have an impact on the harmonic modulation of the entire power distribution system
There is no targeted solution to this specific problem in the prior art

Method used

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  • Harmonic protection method for power distribution system of shopping mall
  • Harmonic protection method for power distribution system of shopping mall
  • Harmonic protection method for power distribution system of shopping mall

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Embodiment Construction

[0016] refer to Figure 1-3 , the present invention will be described in detail.

[0017] A harmonic protection method for a power distribution system in a shopping mall, the power distribution system includes a bus bar 10, a first transformer 1 is connected to the left end of the bus bar 10, a second transformer 2 is connected to the right end, the first transformer 1 and the second transformer 2. Provide power to the busbar 10. The busbar is connected to the first left capacitance compensation module 3 and the second left capacitance compensation module 4 in turn on the right side of the first transformer 1. The busbar is connected to the left capacitor compensation module 4 on the right side of the second left capacitance compensation module. The harmonic protection module 7, wherein, the left harmonic protection module 7 is connected to the bus through the left waveform detection circuit 71 and the left waveform modulation circuit 72, and the left waveform detection circui...

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Abstract

The invention provides a harmonic protection method for a power distribution system of a shopping mall. Two harmonic protection modules are used for the method, and a capacitance compensation module and a load are arranged between the two harmonic protection modules. Each harmonic protection module is provided with a main harmonic protector, an auxiliary harmonic protector and a coordination module. Each harmonic protector is provided with a signal collection circuit and an inverter circuit.

Description

technical field [0001] The invention relates to the field of power distribution, in particular to a harmonic protection method for a power distribution system of a shopping mall. Background technique [0002] In the electric power distribution system, due to the influence of the load on the power grid, harmonic currents are generated, so it is often necessary to install harmonic protection devices in the power distribution system. These protection devices can modulate and suppress the harmonic currents generated in the power distribution system. However, the arrangement of power distribution systems in some specific fields is not involved in the prior art. Since the layout of power distribution equipment in specific fields is changeable, and the configuration of different equipment in the system changes, it will have a great impact on the harmonic modulation of the entire power distribution system. For example, the position of the access point should be different depending...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCY02E40/40
Inventor 刘德涵
Owner 浙江尼古拉斯电气科技有限公司