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Applicable to long-distance 10kv distribution network terminal low-voltage control device and method

A low-voltage, long-distance technology, applied in the direction of circuit devices, AC network voltage adjustment, AC network circuits, etc., can solve the problems that the effect of low-voltage control cannot meet expectations, achieve simplified control algorithms and strategies, solve low-voltage problems, The effect of reducing the difficulty of manufacturing

Active Publication Date: 2021-10-08
江苏谷峰电力科技股份有限公司
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  • Application Information

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Problems solved by technology

[0009] In summary, the current common low-voltage control devices have their limitations, especially when the 10kV line impedance is dominated by resistive components and the load power factor is extremely high, the low-voltage control effect of the above-mentioned equipment is far from reaching expectations

Method used

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  • Applicable to long-distance 10kv distribution network terminal low-voltage control device and method
  • Applicable to long-distance 10kv distribution network terminal low-voltage control device and method
  • Applicable to long-distance 10kv distribution network terminal low-voltage control device and method

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Embodiment Construction

[0030] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0031] Such as figure 1 , figure 2 As shown, a low-voltage treatment device suitable for long-distance 10kV distribution network terminal, including active compensation unit, passive compensation unit, control unit, the active compensation unit and passive compensation unit are connected in series to the end of 10kV distribution line, And the active compensation unit is set at the front end of the passive compensation unit and is located on the power supply side of the distribution line; the active compensation unit includes a battery pack combined in parallel, a bidirectional DC / DC converter, a grid-connected PWM converter, and a fast bypass circuit. The fast bypass circuit includes a first bypass switch K arranged in parallel 1 , thyristor SCR1, thyristor SCR2, series transformer T; passive compensation unit including series capacitor C 2 , for th...

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Abstract

The invention is suitable for a low-voltage management device and method at the end of a long-distance 10kV distribution network, and relates to the technical field of distribution network power management devices. The invention includes an active compensation unit, a passive compensation unit, and a control unit. The active compensation unit and the passive compensation unit are connected in series to the end of the 10kV power distribution line, and the active compensation unit is set at the front end of the passive compensation unit and located at the power distribution line. line power side. Aiming at the deficiencies of existing low-voltage treatment devices, the invention achieves the goals of simple structure, increased power density, reduced capacity requirements of compensation devices, and improved equipment cost performance.

Description

technical field [0001] The invention relates to the technical field of distribution network power management devices, in particular to the technical field of low-voltage management devices and methods applied to the end of a long-distance 10kV power distribution network. Background technique [0002] In recent years, with the extensive promotion of policies and projects such as electric energy replacement and returning home to start a business, the load on rural power grids has increased rapidly. Due to the large area of ​​the rural distribution network and the sparse population and scattered loads, considering the economics of distribution network construction, the situation of small 10kV wire diameter and long distribution distance is especially common. Many distribution stations, especially long-distance 10kV rural power distribution At the end of the network, the problem of low voltage is particularly serious, seriously affecting the production and living electricity of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/32H02J3/12H02J3/26H02J3/18
CPCH02J3/12H02J3/1807H02J3/26H02J3/32Y02E40/30Y02E40/50
Inventor 张高锋刑威峰
Owner 江苏谷峰电力科技股份有限公司
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