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Method of inputting hot standby line combined with standby power supply based on fiber channel

A backup power supply, fiber channel technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as excessive capacitive reactive power in substations and reactive power reverse transmission in power grids

Active Publication Date: 2021-04-13
STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a fiber channel-based hot standby line joint backup power supply input method to solve the problems of excessive capacitive reactive power in most substations and reactive power reversed in the power grid

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  • Method of inputting hot standby line combined with standby power supply based on fiber channel
  • Method of inputting hot standby line combined with standby power supply based on fiber channel
  • Method of inputting hot standby line combined with standby power supply based on fiber channel

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Embodiment Construction

[0170] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0171] The power transmission and distribution network applied by the method of the present invention is two 110kV lines, two 220kV substations A, B and one 110kV substation C, and the system structure is as follows:

[0172] (1) 110kV line 1 and 110kV line 2 come from 220kV substations A and B respectively; (2) 110kV line 1 is respectively connected to the 110kV busbar of 220kVA station and the I-section busbar of 110kVC station, and there are circuit breakers 4DL and current transformers on the power supply side of line 1 CT4, circuit breaker 1DL and current transformer CT1 on the load side of line 1; (3) 110kV line 2 is respectively connected to the 110kV busbar of 220kVB station and section II busbar of 110kVC station, and circuit breaker 5DL and current transformer CT5 are installed on the power side of line 2, Circuit breaker 2DL and curr...

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Abstract

The invention discloses a fiber channel-based hot standby line joint standby power supply input method, which is applied to the following lines: 110kV line 1 and line 2 are respectively connected to 220kV substation A station and substation B station, and the power supply side of line 1 is equipped with Circuit breaker 4DL, circuit breaker 1DL is installed on the load side of line 1; one end of line 2 is connected to the 110kV busbar of substation B station, and the other end is connected to section II busbar of substation C station, circuit breaker 5DL is installed on the power side of line 2, and line 2 There is a circuit breaker 2DL on the load side; a section or inner bridge circuit breaker 3DL is installed between the I-section busbar and the II-section busbar of the substation C; the 110kV side of the substation A station, substation B station, and substation C station are equipped with backup Automatic power supply device; solves the problem of excessive capacitive reactive power in substations and reactive power transfer of the power grid, improves the voltage level of the substation, prevents the local power grid from being too high, and improves the overall operation level of the power grid.

Description

technical field [0001] The invention relates to a method for inputting a hot standby line combined with a standby power supply based on an optical fiber channel, and belongs to the technical field of power transmission and distribution control. Background technique [0002] With the promotion of urban construction and the improvement of power grid structure, the high and low voltage sides of 110kV and below substations are generally powered by cable lines, resulting in increasing capacitive reactive power. On the one hand, most urban substations lack reactors due to the long operation time and the saturated number of intervals, so they cannot absorb excess capacitive reactive power; etc. are restricted by internal and external factors and cannot operate. What is more serious is that the phenomenon of reactive power transfer in the power grid during low load periods during holidays is common, resulting in a significant decrease in power factor and high voltage in some areas ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 马骏毅任萱张大林施伟成汤大海李静杜炜凝马海薇许象明巴宇
Owner STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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