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Harmonic protection method of power distribution cabinet system in iron and steel plant with protection cabinet set at the outer end

A technology for protection cabinets and power distribution cabinets, 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 power grid harmonics

Active Publication Date: 2019-05-14
浙江尼古拉斯电气科技有限公司
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  • 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 of power distribution cabinet system in iron and steel plant with protection cabinet set at the outer end
  • Harmonic protection method of power distribution cabinet system in iron and steel plant with protection cabinet set at the outer end
  • Harmonic protection method of power distribution cabinet system in iron and steel plant with protection cabinet set at the outer end

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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 cabinet system in a steel plant where the protection cabinet is arranged at the outer end. The power distribution cabinet system includes a bus bar 10. The left end of the bus bar 10 is connected to a first transformer 1, and the right end is connected to a second transformer 2. The first transformer 1 and the second transformer 2 provide power to the bus 10. The power distribution cabinet system also includes a left harmonic protection cabinet 7 and a right harmonic protection cabinet 8, whose physical positions are respectively set at the leftmost and At the far right end, the busbar is connected to the first left capacitor compensation cabinet 3 and the second left capacitor compensation cabinet 4 in turn on the right side of the first transformer 1, and the busbar is connected to the left harmonic protection cabinet on the right si...

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Abstract

The invention provides a harmonic protection method of a steel plant power distribution cabinet system with protection cabinets arranged at the outer end. The two harmonic protection cabinets are utilized, and capacitance compensation cabinets and a power distribution cabinet are arranged between the two harmonic protection cabinets. Each harmonic protection cabinet is provided with a main harmonic protector, an auxiliary harmonic protector and a coordination module, and a signal acquisition and inverter circuit is arranged in each harmonic protector.

Description

technical field [0001] The invention relates to the field of power distribution, in particular to a harmonic protection method for a power distribution cabinet system in a steel plant where the protection cabinet is arranged at the outer end. Background technique [0002] In the power distribution system, due to the influence of the power distribution cabinet 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....

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Application Information

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Patent Type & Authority Patents(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