Line backup power input method for hot standby based on power side contact fiber channel

A technology of fiber optic channel and backup power supply, which is applied in the direction of circuit devices, AC network circuits, electrical components, etc., and can solve problems such as high capacitive reactive power in substations and reactive power reversed in the power grid.

Active Publication Date: 2019-06-28
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

[0004] The purpose of the present invention is to provide a backup power supply input method for hot standby lines based on the power supply side contact fiber channel, to solve the problems of excessive capacitive reactive power in most substations and reactive power reversed in the power grid

Method used

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  • Line backup power input method for hot standby based on power side contact fiber channel
  • Line backup power input method for hot standby based on power side contact fiber channel
  • Line backup power input method for hot standby based on power side contact fiber channel

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Embodiment Construction

[0206] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0207] Such as Image 6 , 7 As shown, station C in this scheme satisfies the following primary main connections:

[0208] (1) Primary main wiring of 110kV inner bridge in 110kV substation;

[0209] (2) 110kV single busbar subsection primary main wiring in 110kV substation.

[0210] 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:

[0211] (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 l...

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Abstract

The invention discloses a line backup power input method for hot standby based on a power side contact fiber channel. According to the invention, the problems of the over high capacitive reactive power of a substation and grid reactive reversal are solved, the voltage level of the substation is improved, the over high voltage of a local grid is prevented, and the overall operation level of a powergrid is improved. The equipment loss and insulation aging are reduced, the operating efficiency of the substation main equipment is improved, the power factor of the substation is improved, and the economic efficiency of the power grid operation is improved. The occurrence of a large-scale power outage accident when a main supply line is permanently faulty is effectively avoided, the self-recovery of the power grid is achieved, and the reliability of power supply is improved. The method can be taken as a technical guarantee for the special operation mode of the power grid, the safety risk management and control under the special operation mode is greatly improved, and the safe and stable operation of the power grid is promoted. In the invention, a C station satisfies the following primarywiring including the 110kV inner bridge primary main wiring of a 110kV substation and the 110kV single bus section primary main wiring of the 110kV substation.

Description

technical field [0001] The invention relates to a backup power supply input method for a hot standby line based on a power supply side contact 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 ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16H02J3/00
CPCY02E40/30
Inventor 马骏毅任萱张大林黄治施伟成李静汤大海巴宇杜炜凝马海薇
Owner STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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