Method for inputting standby power supply on power side of hot standby line based on fiber channel

A technology of backup power supply and optical fiber channel, which is applied in emergency power supply arrangements, electrical components, circuit devices, etc., can solve the problems of excessive capacitive reactive power in substations and reverse reactive power in power grids, so as to promote safe and stable operation and improve operation. Efficiency and economical effects

Active Publication Date: 2021-06-29
STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fiber channel-based hot standby line power supply side control backup power supply input method to solve the problems of excessive capacitive reactive power and grid reactive power in most substations

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  • Method for inputting standby power supply on power side of hot standby line based on fiber channel
  • Method for inputting standby power supply on power side of hot standby line based on fiber channel
  • Method for inputting standby power supply on power side of hot standby line based on fiber channel

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Embodiment Construction

[0219] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0220] In this scheme, Station C satisfies the following primary main connections (such as Image 6 , 7 shown):

[0221] (1) Primary main wiring of 110kV inner bridge in 110kV substation;

[0222] (2) 110kV single busbar subsection primary main wiring in 110kV substation.

[0223] 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, comprising:

[0224] (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 li...

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Abstract

The invention discloses a method for controlling the input of standby power at the power supply side of a hot standby line based on fiber optic channels. In this scheme, station C is applied to the primary main connection of the 110kV inner bridge of a 110kV substation; main wiring. Solve the problems of high capacitive reactive power in substations and grid reactive power reverse, improve the voltage level of substations, prevent local grid voltage from being too high, and improve the overall operation level of the grid. It reduces equipment loss and insulation aging, improves the operating efficiency of the main equipment of the substation, improves the power factor of the substation, and improves the economy of power grid operation. Effectively avoid the occurrence of large-scale blackout accidents when the main power supply line fails permanently, realize the self-healing of the power grid, and improve the reliability of power supply. The invention can be used as the technical guarantee for the special operation mode of the power grid, greatly improves the safety risk control under the special operation mode, and promotes the safe and stable operation of the power grid.

Description

technical field [0001] The invention relates to a method for controlling the input of a standby power supply at the power supply side of a hot standby line 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 an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06H02J13/00
CPCY02B70/30Y02B90/20Y02E60/00Y04S10/16Y04S20/12Y04S20/20Y04S20/248
Inventor 巴宇马骏毅任萱张大林施伟成李静汤大海许象明杜炜凝马海薇
Owner STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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