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Low-voltage line loss intelligent compensation terminal

A low-voltage line and terminal technology, used in reactive power compensation, reactive power adjustment/elimination/compensation, AC network circuits, etc., can solve the problem of low voltage at the end of the line, inability to reduce line loss, loss reduction and power saving benefits. and other problems, to achieve the effect of changing the quality of power supply, convenient equipment maintenance, and realizing low-current zero-crossing switching.

Pending Publication Date: 2018-03-06
NANJING KEWO ELECTRIC POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Centralized compensation can only reduce the loss caused by the transmission of reactive power in distribution transformers, but cannot reduce the line loss of low-voltage trunk lines caused by reactive current. Problems such as low voltage at the end of the line caused by large

Method used

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  • Low-voltage line loss intelligent compensation terminal
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  • Low-voltage line loss intelligent compensation terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] like Figure 1 to Figure 8 As shown, this embodiment provides a low-voltage line loss intelligent compensation terminal, which includes an outer shell and a terminal control system. The terminal control system includes a control unit 3, a metering unit 5, a capacitor bank 4, a main control unit 1 and a display unit 2. The main control unit 1 includes a main control display and communication module, the display unit 2 is a liquid crystal display interface, the control unit 3 includes a magnetic latching relay switch module, a terminal power conversion module and an analog signal sampling module, and the metering unit 5 includes a current measurement sampling module, a capacitor groups are integrated capacitors. The main control display and communication module are respectively connected with the current measurement sampling module, the terminal power conversion module and the analog signal sampling module; the current measurement sampling module is connected with the ter...

Embodiment 2

[0092] Based on Example 1 and Figures 1 to 8 The low-voltage line loss intelligent compensation terminal is implemented on-site.

[0093] According to the technical standard of the electricity metering box, it can be known that the horizontal space distance on the left side of the meter box is 230mm, and the low-voltage line loss intelligent compensation terminal can be installed here. The size of the integrated capacitor body is 190mm*120mm*110mm, the width of the terminal equipment is designed to be 209mm, the capacitor is installed horizontally, and the operation margin is reserved. The main switch, guide rail, concentrator (power terminal) and bus box in the meter box are moved up as a whole, and the position of the guide rail is customized and adjusted. Due to the wall-mounted installation, capacitors and other components with large volume and weight are suitable for installation under the terminal. The display unit of the terminal is on the upper left of the device, t...

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Abstract

The invention relates to a low-voltage line loss intelligent compensation terminal which comprises an outer housing and a terminal control system, the terminal control system comprises a control unit(3), a metering unit (5), a capacitor bank (4), a main control unit (1) and a display unit (2), the low-voltage line loss intelligent compensation terminal which is formed by the outer housing and theterminal control system is directly mounted in a user side metering box, and reactive power multigroup disperse compensation inside a low-voltage grid is formed. According to the low-voltage line loss intelligent compensation terminal, user side low-voltage line loss compensation can be realized, compared with a normal low-voltage reactive compensation device, the size is smaller, and the integration degree is higher; the terminal is directly mounted in the metering box or cable branch box on a load side, not only can loss of the circuit and a transformer be reduced, but also the power supplyquality can be changed, and the harmonic wave can be effectively restrained and eliminated; at the same time, the equipment is convenient to maintain, and the fault rate is low; more importantly, compared with the prior compensation art, small current zero passage switching and reactive compensation capacity intelligent adjustment can be realized by the aid of the terminal.

Description

technical field [0001] The invention relates to reactive power compensation technology, in particular to the field of power consumption of single-phase inductive loads with relatively low grid power factor and relatively large reactive power line loss, and specifically relates to a low-voltage line loss intelligent compensation terminal. Background technique [0002] With the rapid advancement of the country's urbanization process, a large number of residential buildings, high-end shopping malls, hotels, offices and other civil buildings have sprung up in cities, and urban electricity consumption has also increased rapidly. However, most of these civil construction sites use single-phase inductive loads, resulting in a seriously low power factor of the low-voltage power grid and a seriously large reactive power line loss. This is not compatible with the country's current policy of "energy saving, emission reduction, green environmental protection". The use of reactive power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCH02J3/1842Y02E40/30
Inventor 唐明群孙大璟郑陈凯
Owner NANJING KEWO ELECTRIC POWER TECH
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