Method for automatically devoting microcomputer control standby power for enlarging inner bridge wire splice
A technology of backup power supply and expansion of inner bridge, applied in emergency power supply arrangement, electrical components, circuit devices, etc., can solve the problem of not fully covering the operation mode of expansion of inner bridge wiring, etc.
Active Publication Date: 2011-06-15
STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO +1
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Problems solved by technology
The primary main wiring of the substation is the backup power automatic input device for expanding the inner bridge connection. Although the manufacturer has produced it, the control method and basic principle adopted by the existing backup power automatic input device for expanding the inner bridge connection are as follows: According to the pre-set operation mode and set the process in this operation mode, the operation mode cannot fully cover the entire operation mode of the enlarged inner bridge line
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[0171] (1) Specific implementation methods of expanding the inner bridge line
[0172] Such as figure 1 As shown, the primary main wiring of the substation in the power transmission and distribution network applied by the method of the present invention is a standard double power supply power supply enlarged internal bridge wiring, including two power supplies, and the two power supplies are respectively connected in series with the first Circuit breaker 1QF, circuit breaker 2QF, circuit breaker 3QF and circuit breaker 4QF are also respectively connected to three main transformers (namely the first main transformer, the second main transformer and the third main transformer), the line side of the power incoming line and the transformer high voltage Potential transformers are connected to the side or the low voltage side. That is, two power supply lines, three step-down main transformers, and four circuit breakers:
[0173] 1. Operation mode 1
[0174] 1.1 Preparation stage ...
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The invention belongs to the control technique for power transmission and distribution network, and relates to a method of using a microcomputer to control the automatic input of a standby power supply. The control method comprises the following control procedures of controlling the tripping of a first circuit breaker 1QF, the tripping of a fourth circuit breaker 4QF, the switch-on charge and discharge of the first circuit breaker 1QF, the switch-on charge and discharge of a second circuit breaker 2QF, the switch-on charge and discharge of a third circuit breaker 3QF, the switch-on charge and discharge of the fourth circuit breaker 4QF, the switch-on of the first circuit breaker 1QF, the switch-on of the second circuit breaker 2QF, the switch-on of the third circuit breaker 3QF, the switch-on of the fourth circuit breaker and abnormal signals. The method can be applied to a standby power automatic input device of a power substation of which the power transmission and distribution network is at a voltage level of 220 kV or lower than 220 kV and a primary main connecting wire is a double-power-supply expanded inter-bridge connecting wire. The method has the advantages of simple action principle and high reliability, and completely accords with the basic principle of standby power automatic input.
Description
technical field [0001] The invention belongs to the control technology of electric power transmission and distribution network, and relates to a method for using a microcomputer to control the automatic input of a standby power supply. Background technique [0002] At present, the common backup power automatic input devices operated by substations include substation primary main wiring as inner bridge wiring, single-bus section wiring and single-bus wiring backup power automatic input devices. The primary main wiring of the substation is the backup power automatic input device for expanding the inner bridge connection. Although the manufacturer has produced it, the control method and basic principle adopted by the existing backup power automatic input device for expanding the inner bridge connection are as follows: According to the operation mode set in advance, and the process is set under this operation mode to complete, the operation mode can not fully cover the entire op...
Claims
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IPC IPC(8): H02J9/06
Inventor 汤大海
Owner STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO