A non-stop ice-melting system for 10kv distribution lines with voltage and reactive power optimization
A power distribution line and voltage technology, applied in the direction of circuit devices, reactive power compensation, cable installation, etc., can solve the problems of low equipment utilization, low voltage quality, damage to electrical equipment, etc., to improve power supply reliability and reduce Line loss, the effect of improving voltage quality
Active Publication Date: 2021-07-16
梁家诚
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Problems solved by technology
[0004] Aiming at the problems of low voltage quality and high loss of 10kV distribution lines, the patent (smart distribution network series compensation device, patent number: ZL 2013 2 0751287.2) proposes a capacitor series compensation technology for 10kV distribution lines, which can effectively improve Line voltage quality, reduce line loss
However, this patent adopts a centralized series compensation technology, and the capacity and capacitive reactance (XC) of a single set of devices are too large. The overvoltage of the 10kV distribution line that was melted by ice caused damage to the electrical equipment
[0005] In addition, there are three other patents (CN 107658778A; CN201220619385.6; CN205882638U) aimed at melting ice in distribution lines. Their common disadvantages are: 1) Power outages are required to melt ice; very low utilization
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[0026] Below in conjunction with accompanying drawing, the present invention will be further described:
[0027] The device of the present invention is composed of three major parts: 1) a plurality of series capacitor intelligent compensation devices 2 distributedly installed on a 10kV distribution line 1; 2) a movable reactive power composed of multiple groups of capacitors plus an SVG Power source 3, or a mobile reactive power source composed of multiple sets of capacitors, or a mobile reactive power source composed of multiple sets of reactors and magnetron reactors; 3) a communication network using GPRS or A dedicated communication network, which realizes the information exchange between the series capacitor intelligent compensation device and the movable reactive power source. Several 10kv / 0.4kv distribution transformers 4 are arranged on the 10kV distribution line.
[0028] The series capacitor intelligent compensation device includes: a three-phase capacitor bank 9, a ...
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The invention relates to a 10kV distribution line ice-melting system with voltage and reactive power optimization without power failure. The invention consists of a plurality of series capacitor intelligent compensation devices distributed and installed on the 10kV distribution line and a movable reactive power supply. The movable reactive power supply can Move it in parallel to a certain point on the 10kV distribution line, and cooperate with the distributed series capacitor compensation device to realize the function of melting ice without power failure or optimizing voltage and reactive power. When the distribution line freezes, the present invention can melt the ice without stopping the power supply, and can improve the voltage quality of the 10kV distribution line, compensate reactive power, and reduce line loss; it has load "adaptive" voltage regulation, reactive power Compensation, and line loss optimization and other features.
Description
technical field [0001] The invention relates to a 10kV distribution line ice-melting system with voltage and reactive power optimization without power failure. Background technique [0002] The voltage quality of 10kV distribution network is an important indicator to measure whether the quality of power supply meets the standard, and its quality is directly related to the safe and economical operation of electrical equipment and the normal operation of production. my country's 10kV distribution network covers a wide area and has a long total length, and most of the 10kV lines in rural areas have small wire diameters, long lines (especially mountain village lines), a large number of distribution transformers, and even many lines with multiple large-capacity motors or Rapidly changing industrial loads often lead to low voltage at the end of the line, severe voltage drop, and large line loss. It has seriously affected the quality of life of residents in the power supply area an...
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IPC IPC(8): H02G7/16H02J3/18H02J3/16
CPCH02G7/16H02J3/16H02J3/1807Y02E40/30
Inventor 梁一桥梁家诚
Owner 梁家诚