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Low voltage monitoring and three-phase load balance automatic adjustment system

A three-phase load, automatic adjustment technology, applied in the direction of information technology support systems, electrical components, circuit devices, etc., can solve the problems of increasing the short-circuit capacity of the load access point, unable to improve the loss of the low-voltage side outlet, and reduce the line Effect

Pending Publication Date: 2018-07-20
烟台市博宇海诺知识产权代理有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

The second is to use the method of cross-switching to reasonably distribute the asymmetrical load to each phase, and try to make it as balanced as possible; the third is to increase the short-circuit capacity of the load access point, such as changing the network or increasing the power supply voltage level, so as to enhance the system's ability to withstand unbalanced loads. The fourth is to install a reactive power compensation and balancing device; the first three mainly rely on manual balancing, and can only maintain a relative balance at a certain time node. The reactive power compensation and balancing device is based on power factor and reactive power. Controlled, this method can only make the three-phase balance at the distribution end
Unable to improve the loss problem on the low-voltage side outgoing line

Method used

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  • Low voltage monitoring and three-phase load balance automatic adjustment system

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Embodiment Construction

[0019] attached by figure 1 As shown, a low-voltage monitoring and three-phase load balance automatic adjustment system of the present invention includes an acquisition module 1, an acquisition module 2 to an acquisition module M, a communication module 1 with a wireless unit set, a communication module 2 to a set with a wireless unit Communication module M of the wireless unit, concentrator 1, concentrator 2 to concentrator M, collector 11, collector 12 to collector 1X, collector 21, collector 22 to collector 2Y, collector M1, collector M2 to collector MZ, communication module 11, communication module 12 to communication module 1X, communication module 21, communication module 22 to communication module 2Y, communication module M1, communication module M2 to communication module MZ, phase change switch 11, air switch 12 To phase change switch 1X, phase change switch 21, air switch 22 to phase change switch 2Y, phase change switch M1, air switch M2 to phase change switch MZ, w...

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Abstract

The invention discloses a low voltage monitoring and three-phase load balance automatic adjustment system. A concentrator carries out operation analysis on the power parameter data of the output end of a branch transformer and the power parameter data of a terminal load. Some phase change switches are optimally selected. The system automatically carries out appropriate phase switching on the phasechange switches. An air switch is always free of phase switching. Through automatic adjustment, a low-voltage power distribution side automatically keeps a balance state. The loss of a line and the branch transformer is reduced. The service lives of the line and the branch transformer are improved. The power supply quality is improved. The concentrator can communicate the power parameter data ofthe output end of the branch transformer and the power parameter data of the terminal load with a central computer through a power carrier wireless network, so as to realize power monitoring and remote optimization control. Cumbersome work links during the adjustment of the load balance of the line are reduced. The work intensity is reduced. A worker simply needs to carry out system operation to realize load adjustment. The work efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of power three-phase load balance adjustment, in particular to a low-voltage monitoring and three-phase load balance automatic adjustment system. Background technique [0002] Today, with the rapid development of science and the progress of the times, in the modern power grid system, the three-phase unbalance problem caused by a large number of impact asymmetric loads has caused great harm to the safe and stable operation of the distribution network, seriously affecting the power supply power of the system. Quality, my country's low-voltage distribution network basically adopts the three-phase four-wire distribution network method, almost all distribution transformers... 60% to 70%, some even reach more than 70%, seriously affecting the normal supply of electric energy, Three-phase unbalance is also very common in all low-voltage distribution networks such as residential areas, industrial and mining, and enter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/26H02J13/00
CPCH02J13/0075H02J3/26Y02E40/50Y04S40/126Y02B90/20Y02E60/00
Inventor 刘方旭修建东
Owner 烟台市博宇海诺知识产权代理有限公司
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