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User side low-voltage reactive power compensation device

A compensation device and low-voltage technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, circuit devices, etc., can solve problems such as scattered reactive power compensation functions at the user end, improve the level of investigation, reduce equipment investment and The effect of installation and commissioning workload and reduction of blackout area

Active Publication Date: 2013-09-04
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0006] Aiming at the deficiencies of the existing technology, the present invention proposes a low-voltage reactive power compensation device at the user end, which overcomes the problem of dispersed reactive power compensation functions at the existing user end, improves the state monitoring ability of power equipment, and improves the hidden dangers of power equipment safety accidents. Check level

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  • User side low-voltage reactive power compensation device
  • User side low-voltage reactive power compensation device
  • User side low-voltage reactive power compensation device

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Embodiment Construction

[0033] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] A user-side low-voltage reactive power compensation device proposed in this embodiment is placed between the main station and the primary equipment of the medium and low-voltage power grid to form a power quality monitoring system, such as figure 2 shown. In the figure, the multifunctional user-side low-voltage reactive power compensation device completes the functions of an online monitoring terminal for power equipment status and a reactive power compensation control terminal, and can save real-time video monitoring information in a local large-capacity storage medium for safety and quality accident analysis.

[0035] The low-voltage reactive power compensation device of this embodiment has a structure such as image 3 As shown, it mainly includes a dual-core processor, a collector, a state quantity measuring ...

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Abstract

The invention provides a user side low-voltage reactive power compensation device. The device is arranged between a main station and medium-low-voltage grid primary equipment. The device comprises a dual-core processor, a collector, a state quantity measurer, a video converter, mass storage equipment and a relay protection device, wherein the dual-core processor respectively receives voltage and current signals of the medium-low-voltage grid primary equipment collected by the collector, the state quantity of the medium-low-voltage grid primary equipment collected by the state quantity measurer and the digital video converted by the video converter, then performs data processing and transmits to the power distribution network main station, and controls capacitor banks of the low-voltage grid to realize the reactive power compensation; and when the device is in fault, the relay protection device is used for protecting the low-voltage reactive power compensation device. Through adding various functions such as video real-time monitoring, mass storage, high-speed communication into the conventional reactive power compensation device, the problems can be effectively solved, so that the state monitoring capability of electrical equipment is improved, and the accident hidden danger checking level of the electrical equipment is improved.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a low-voltage reactive power compensation device at a user end. Background technique [0002] In the existing medium and low voltage power grids, the power quality monitoring and control system generally consists of a power quality monitoring master station, a power quality monitoring and control system, a reactive power compensation control terminal and related communication channels, such as figure 1 shown. The communication channel of the power quality monitoring and control system can sometimes be combined with the communication channel of the distribution automation system. The online monitoring system of the power system generally consists of online monitoring sensors, online monitoring terminals, online monitoring system servers and related communication channels. [0003] Among the above, the reactive power and voltage control of the power system is an important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J13/00
CPCY02E40/30
Inventor 王维洲郑伟靳丹智勇周喜超梁琛马超邢延东高春雷蔡月明赵翔侯佳佳张晓燕刘志红
Owner STATE GRID CORP OF CHINA
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