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Optical fiber channel hot standby line standby power supply input method based on main transformer control

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

Inactive Publication Date: 2019-08-23
STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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Problems solved by technology

[0004] The purpose of the present invention is to provide a fiber channel hot standby line backup power supply input method based on the main transformer control, which can solve the problems of excessive capacitive reactive power and reactive power transfer of most substations

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  • Optical fiber channel hot standby line standby power supply input method based on main transformer control
  • Optical fiber channel hot standby line standby power supply input method based on main transformer control
  • Optical fiber channel hot standby line standby power supply input method based on main transformer control

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Embodiment Construction

[0195] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0196] Such as Figure 4 , 5 As shown, station C in this scheme satisfies the following primary main connections:

[0197] (1) Primary main wiring of 110kV inner bridge in 110kV substation;

[0198] (2) 110kV single busbar subsection primary main wiring in 110kV substation.

[0199] 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:

[0200] (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 ...

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Abstract

The invention discloses an optical fiber channel hot standby line standby power supply input method based on main transformer control. The method is applied to the following lines: a primary main wireof a 110kV inner bridge of a 110kV substation; and a subsection primary main wire of a 110kV single-bus of the 110kV substation. According to the invention, the problems of too high capacitive reactive power and power grid reactive power transfer of the transformer substation are solved, the voltage level of the transformer substation is improved, local power grid voltage is prevented from beingtoo high, and the overall operation level of the power grid is improved. Equipment loss and insulation aging are reduced, the operation efficiency of main equipment of the transformer substation is improved, the power factor of the transformer substation is improved, and the economical efficiency of power grid operation is improved. Large-area power failure accidents during permanent faults of a main supply line are effectively avoided, the self-healing of the power grid is achieved, and the power supply reliability is improved. The method can be used for providing the technical guarantee fora special operation mode of the power grid, greatly improves safety risk management and control under the special operation mode, and promotes safe and stable operation of the power grid.

Description

technical field [0001] The invention relates to a method for inputting a standby power supply of a fiber channel hot standby line based on main transformer control, and belongs to the technical field of electric 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...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02H7/26H02H1/00
CPCH02H7/262H02H1/0061H02J3/0073
Inventor 马骏毅任萱张大林黄治施伟成马海薇李静巴宇汤大海杜炜凝
Owner STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO
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