CN102403783B - Method for automatically switching in microcomputer control standby power supply of expanded inner bridge connection line - Google Patents

Method for automatically switching in microcomputer control standby power supply of expanded inner bridge connection line Download PDF

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CN102403783B
CN102403783B CN201110370153.1A CN201110370153A CN102403783B CN 102403783 B CN102403783 B CN 102403783B CN 201110370153 A CN201110370153 A CN 201110370153A CN 102403783 B CN102403783 B CN 102403783B
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circuit breaker
floodgate
closing
condition
relay
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CN102403783A (en
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汤大海
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Zhenjiang Power Supply Co of Jiangsu Electric Power Co
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Zhenjiang Power Supply Co of Jiangsu Electric Power Co
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Abstract

The invention belongs to the control technology of a power transmission and distribution network and relates to a method for automatically switching in a microcomputer control standby power supply of an expanded inner bridge connection line. The method comprises the following control processes of: A, carrying out tripping control on a first breaker 1QF; B, carrying out tripping control on a fourth breaker 4QF; C, carrying out closing, charging and discharging control on the first breaker 1QF; D, carrying out closing control on the first breaker 1QF; E, carrying out closing, charging and discharging control on a second breaker 2QF; F, carrying out closing control on the second breaker 2QF; G, carrying out closing, charging and discharging control on a third breaker 3QF; H, carrying out closing control on the third breaker 3QF; I, carrying out closing, charging and discharging control on a fourth breaker 4QF; J, carrying out closing control on the fourth breaker 4QF; and K, carrying out abnormal signal control. The method can be applied to the device for automatically switching in the standby power supply of the expanded inner bridge connection line as the primary main connection line of a power substation with the power transmission and distribution network of 220kV or below; and the method has simple action principle and high reliability, and completely complies with basic principle of automatically switching in the standby power supply.

Description

Expand the microcomputer control standby power method of input automatically of internal bridge
Technical field
The invention belongs to the control technology of power transmission and distribution network, relate to a kind of method automatically dropping into microcomputer control standby power.
Background technology
At present, the automatic throw-in equipment of emergency power supply of electric substation's operation common are the automatic throw-in equipment of emergency power supply that main electrical scheme of electric substation is expansion internal bridge, internal bridge, single-trunk segmental wiring and single bus scheme.And although the manufactory that main electrical scheme of electric substation is the automatic throw-in equipment of emergency power supply prepared auto restart of expansion internal bridge produced, the control method that this automatic throw-in equipment of emergency power supply adopts and general principle are the operational modes by prior setting, and setting process completes under this operational mode, operational mode also fails to contain completely the internal bridge whole service mode that expands.Although patent of invention CN101436787 has proposed the scheme of a fairly perfect internal bridge in " expanding the method that the microcomputer control standby power of internal bridge automatically drops into ", the present invention adopts another logical circuit to complete by proposing and main electrical scheme of electric substation of adapting to applied transmission and distribution networks is the technical scheme that expands internal bridge automatic throw-in equipment of emergency power supply.
Summary of the invention
Problem to be solved by this invention is, it is that main electrical scheme of 220kV and following electric pressure electric substation is the automatic throw-in equipment of emergency power supply that expands internal bridge that a kind of transmission and distribution networks that can be applied to is provided, and operating principle is simple, reliability is high, meet the stand-by power supply method that the microcomputer control standby power of the expansion internal bridge of the general principle of input drops into automatically automatically completely.
Provide the technical scheme of the inventive method below.
It in main electrical scheme of electric substation of the applied transmission and distribution networks of method of the present invention, is standard expansion internal bridge mode, include two-way power supply, on two-way power supply, be serially connected with respectively four circuit breakers, i.e. the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF; Between each circuit breaker, also connect respectively three main transformers, i.e. the first main transformer, the second main transformer and the 3rd main transformer; This mode of connection comprises two-way electric power incoming line, three step-down main transformers, four circuit breakers, and wherein two circuit breakers are electric power incoming line circuit breaker, another two circuit breakers are bridge circuit breaker; The line side of electric power incoming line and high voltage side of transformer or low-pressure side are all connected to voltage transformer; Its control method comprises following control procedure:
The tripping operation control of control procedure A. the first circuit breaker 1QF,
Be less than trip inspection definite value with no pressure, the 4th circuit breaker 4QF supply voltage 2U1 and be greater than trip inspection and have compression set value and 1QF manually to control the two-position relay 1KKJ of circuit breaker 1KK or its deciliter state when these conditions of position meet after closing a floodgate simultaneously when the first circuit breaker 1QF source current 1I1 is less than trip inspection no flow setpoint, 1QF supply voltage 1U1, through certain time delay tT1, to the first circuit breaker 1QF tripping operation control loop output pulse control signal, make the first circuit breaker 1QF tripping operation, export in-put of spare power supply tripping operation actuating signal simultaneously.
The tripping operation control of control procedure B. the 4th circuit breaker 4QF
Be less than trip inspection definite value with no pressure, the first circuit breaker 1QF supply voltage 1U1 and be greater than trip inspection and have compression set value and 4QF manually to control the two-position relay 4KKJ of circuit breaker 4KK or its deciliter state when these conditions of position meet after closing a floodgate simultaneously when the 4th circuit breaker 4QF source current 4I1 is less than trip inspection no flow setpoint, 4QF supply voltage 2U1, through certain time delay tT4, to the 4th circuit breaker 4QF tripping operation control loop output pulse control signal, make the 4th circuit breaker 4QF tripping operation, export in-put of spare power supply tripping operation actuating signal simultaneously.
Control procedure C. the first circuit breaker 1QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when two-position relay 1KKJ position after closing a floodgate of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(2) when two-position relay 4KKJ position after separating brake of hand control switch 4KK or its deciliter state of the 4th circuit breaker 4QF;
(3) when the first main transformer protection 1BCJ action;
(4) when the first circuit breaker 1QF sends combined floodgate control command;
Condition b. charge condition one
(1) when two-position relay 4KKJ position after closing a floodgate of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(2) when two-position relay 1KKJ position after separating brake of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(3) when the open position relay 1TWJ of the first circuit breaker 1QF action.
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 1Tcd1, can be made as 20 seconds).
Condition c. discharging condition two
(1) when two-position relay 1KKJ position after closing a floodgate of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(2) when two-position relay 2KKJ position after separating brake of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(3) when the first main transformer protection 1BCJ action;
(4) when the first circuit breaker 1QF sends combined floodgate control command;
Condition d. charge condition two
(1) when two-position relay 2KKJ position after closing a floodgate of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(2) when two-position relay 1KKJ position after separating brake of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(3) when the open position relay 1TWJ of the first circuit breaker 1QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 1Tcd2, can be made as 20 seconds).
Condition e. discharging condition three
(1) when two-position relay 1KKJ position after closing a floodgate of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(1) when two-position relay 3KKJ position after separating brake of hand control switch 3KK or its deciliter state of the 3rd circuit breaker 3QF;
(3) when the first main transformer protection 1BCJ action;
(4) when the first circuit breaker 1QF sends combined floodgate control command;
Condition f. charge condition three
(1) when two-position relay 3KKJ position after closing a floodgate of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(2) when two-position relay 1KKJ position after separating brake of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(3) when the open position relay 1TWJ of the first circuit breaker 1QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 1Tcd3, can be made as 20 seconds).
Control procedure D. the first circuit breaker 1QF closes a floodgate and controls
Condition a. the first circuit breaker 1QF breaker closing controlled condition one:
(1) when the really tripping of 4QF circuit breaker has been sent and checked to the 4th circuit breaker 4QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1) when the first main transformer high side voltage, the two-position relay 4KKJ of while the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state after closing a floodgate position and the 4th circuit breaker 4QF in open position (being that 4QF circuit breaker position is not corresponding);
(2) 1Tcd1 charging delay time arrives;
(3) first main transformer protections do not move;
In the time that above condition meets, output pulse control signal to the first circuit breaker 1QF combined floodgate control loop after time delay (delay time is tH1), the first circuit breaker 1QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Condition b. the first circuit breaker 1QF combined floodgate controlled condition two:
(1) when the first main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1), the two-position relay 2KKJ of while the second circuit breaker 2QF hand control switch 2KK or its deciliter state after closing a floodgate position and the second circuit breaker 2QF in open position (being that 2QF circuit breaker position is not corresponding);
(2) 1Tcd2 charging delay time arrives;
(3) first main transformer protections do not move;
In the time that above condition all meets, output pulse control signal to the first circuit breaker 1QF combined floodgate control loop after time delay (delay time is tH1) equally, the first circuit breaker 1QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Condition c. the first circuit breaker 1QF combined floodgate controlled condition three:
(1) when the first main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1), the two-position relay 3KKJ of while the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state after closing a floodgate position and the 3rd circuit breaker 3QF in open position (being that 3QF circuit breaker position is not corresponding);
(2) 1Tcd3 charging delay time arrives;
(3) first main transformer protections do not move;
In the time that above condition all meets, output pulse control signal to the first circuit breaker 1QF combined floodgate control loop after time delay (delay time is tH1) equally, the first circuit breaker 1QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Control procedure E. the second circuit breaker 2QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when two-position relay 2KKJ position after closing a floodgate of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(2) when two-position relay 1KKJ position after separating brake of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(3) when the first main transformer protection 1BCJ action;
(4) when the second circuit breaker 2QF sends combined floodgate control command;
Condition b. charge condition one
(1) when two-position relay 1KKJ position after closing a floodgate of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(2) when two-position relay 2KKJ position after separating brake of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(3) when the open position relay 2TWJ of the second circuit breaker 2QF action.
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the second circuit breaker 2QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 2Tcd1, can be made as 20 seconds).
Condition c. discharging condition two
(1) when two-position relay 2KKJ position after closing a floodgate of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the second main transformer protection 2BCJ action;
(4) when the second circuit breaker 2QF sends combined floodgate control command;
Condition d. charge condition two
(1) when two-position relay 4KKJ position after closing a floodgate of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(2) when two-position relay 2KKJ position after separating brake of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(3) when the open position relay 2TWJ of the second circuit breaker 2QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the second circuit breaker 2QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 2Tcd2, can be made as 20 seconds).
Condition c. discharging condition three
(1) when two-position relay 2KKJ position after closing a floodgate of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the second main transformer protection 2BCJ action;
(4) when the second circuit breaker 2QF sends combined floodgate control command;
Condition e. charge condition three
(1) when two-position relay 3KKJ position after closing a floodgate of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(2) when two-position relay 2KKJ position after separating brake of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(3) when the open position relay 2TWJ of the second circuit breaker 2QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the second circuit breaker 2QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 2Tcd3, can be made as 20 seconds).
Control procedure F. the second circuit breaker 2QF closes a floodgate and controls
Condition a. the second circuit breaker 2QF combined floodgate controlled condition one:
(1) when really tripping of the first circuit breaker 1QF has been sent and checked to the first circuit breaker 1QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1) when the first main transformer high side voltage, the two-position relay 1KKJ of while the first circuit breaker 1QF hand control switch 1KK or its deciliter state after closing a floodgate position and the first circuit breaker 1QF in open position (being that 1QF circuit breaker position is not corresponding);
(2) 2Tcd1 charging delay time arrives;
(3) first main transformer protections do not move;
In the time that above condition meets, output pulse control signal to the second circuit breaker 2QF combined floodgate control loop after time delay (delay time is tH2), the second circuit breaker 2QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Condition b. the second circuit breaker 2QF combined floodgate controlled condition two:
(1) when the really tripping of 4QF circuit breaker has been sent and checked to the 4th circuit breaker 4QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1) when the 3rd main transformer high side voltage, the two-position relay 4KKJ of while the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state after closing a floodgate position and the 4th circuit breaker 4QF in open position (being that 4QF circuit breaker position is not corresponding);
(2) 2Tcd2 charging delay time arrives;
(3) second main transformer protections do not move;
In the time that above condition all meets, output pulse control signal to the second circuit breaker 2QF combined floodgate control loop after time delay (delay time is tH2) equally, the second circuit breaker 2QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Condition c. the second circuit breaker 2QF combined floodgate controlled condition three:
(1) when the second main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1), the two-position relay 3KKJ of while the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state after closing a floodgate position and the 3rd circuit breaker 3QF in open position (being that 3QF circuit breaker position is not corresponding);
(2) 2Tcd3 charging delay time arrives;
(3) second main transformer protections do not move;
In the time that above condition all meets, output pulse control signal to the second circuit breaker 2QF combined floodgate control loop after time delay (delay time is tH2) equally, the second circuit breaker 2QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Control procedure G. the 3rd circuit breaker 3QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when two-position relay 3KKJ position after closing a floodgate of hand control switch 3KK or its deciliter state of the 3rd circuit breaker 3QF;
(2) when two-position relay 1KKJ position after separating brake of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF:
(3) when the second main transformer protection 2BCJ action;
(4) when the 3rd circuit breaker 3QF sends combined floodgate control command;
Condition b. charge condition one
(1) when two-position relay 1KKJ position after closing a floodgate of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the open position relay 3TWJ of the 3rd circuit breaker 3QF action.
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 3rd circuit breaker 3QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 3Tcd1, can be made as 20 seconds).
Condition c. discharging condition two
(1) when two-position relay 3KKJ position after closing a floodgate of hand control switch 3KK or its deciliter state of the 3rd circuit breaker 3QF;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the 3rd main transformer protection 3BCJ action;
(4) when the 3rd circuit breaker 3QF sends combined floodgate control command;
Condition d. charge condition two
(1) when two-position relay 4KKJ position after closing a floodgate of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the open position relay 3TWJ of the 3rd circuit breaker 3QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 3rd circuit breaker 3QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 3Tcd2, can be made as 20 seconds).
Condition e. discharging condition three
(1) when two-position relay 2KKJ position after closing a floodgate of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the second main transformer protection 2BCJ action;
(4) when the 3rd circuit breaker 3QF sends combined floodgate control command
Condition f. charge condition three
(1) when two-position relay 2KKJ position after closing a floodgate of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the open position relay 3TWJ of the 3rd circuit breaker 3QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 3rd circuit breaker 3QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 3Tcd3, can be made as 20 seconds)
Control procedure H. the 3rd circuit breaker 3QF closes a floodgate and controls
Condition a. the 3rd circuit breaker 3QF combined floodgate controlled condition one:
(1) when really tripping of the first circuit breaker 1QF has been sent and checked to the first circuit breaker 1QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1) when the first main transformer high side voltage, the two-position relay 1KKJ of while the first circuit breaker 1QF hand control switch 1KK or its deciliter state after closing a floodgate position and the first circuit breaker 1QF in open position (being that 1QF circuit breaker position is not corresponding);
(2) 3Tcd1 charging delay time arrives;
(3) second main transformer protections do not move;
In the time that above condition meets, output pulse control signal to the three circuit breaker 3QF combined floodgate control loops after time delay (delay time is tH3), the 3rd circuit breaker 3Q closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Condition b. the 3rd circuit breaker 3QF combined floodgate controlled condition two:
The really tripping of 4QF circuit breaker has been sent and checked to (1) the 4th circuit breaker 4QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1) when the 3rd main transformer high side voltage, the two-position relay 4KKJ of while the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state after closing a floodgate position and the 4th circuit breaker 4QF in open position (being that 4QF circuit breaker position is not corresponding);
(2) 3Tcd2 charging delay time arrives;
(3) the 3rd main transformer protections do not move;
In the time that above condition all meets, output pulse control signal to the three circuit breaker 3QF combined floodgate control loops after time delay (delay time is tH3) equally, the 3rd circuit breaker 3QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Condition c. the 3rd circuit breaker 3QF combined floodgate controlled condition three:
(1) when the second main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1), the two-position relay 2KKJ of while the second circuit breaker 2QF hand control switch 2KK or its deciliter state after closing a floodgate position and the second circuit breaker 2QF in open position (being that 2QF circuit breaker position is not corresponding);
(2) 3Tcd3 charging delay time arrives;
(3) second main transformer protections do not move;
In the time that above condition all meets, output pulse control signal to the three circuit breaker 3QF combined floodgate control loops after time delay (delay time is tH3) equally, the 3rd circuit breaker 3QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Control procedure I. the 4th circuit breaker 4QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when two-position relay 4KKJ position after closing a floodgate of hand control switch 4KK or its deciliter state of the 4th circuit breaker 4QF;
(2) when two-position relay 1KKJ position after separating brake of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(3) when the 3rd main transformer protection 3BCJ action;
(4) when the 4th circuit breaker 4QF sends combined floodgate control command;
Condition b. charge condition one
(1) when two-position relay 1KKJ position after closing a floodgate of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the open position relay 4TWJ of the 4th circuit breaker 4QF action.
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 4Tcd1, can be made as 20 seconds).
Condition c. discharging condition two
(1) when two-position relay 4KKJ position after closing a floodgate of hand control switch 4KK or its deciliter state of the 4th circuit breaker 4QF;
(1) when two-position relay 2KKJ position after separating brake of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(3) when the 3rd main transformer protection 3BCJ action;
(4) when the 4th circuit breaker 4QF sends combined floodgate control command;
Condition d. charge condition two
(1) when two-position relay 2KKJ position after closing a floodgate of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the open position relay 4TWJ of the 4th circuit breaker 4QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 4Tcd2, can be made as 20 seconds).
Condition e. discharging condition three
(1) when two-position relay 4KKJ position after closing a floodgate of hand control switch 4KK or its deciliter state of the 4th circuit breaker 4QF;
(1) when two-position relay 3KKJ position after separating brake of hand control switch 3KK or its deciliter state of the 3rd circuit breaker 3QF;
(3) when the 3rd main transformer protection 3BCJ action;
(4) when the 4th circuit breaker 4QF sends combined floodgate control command;
Condition f. charge condition three
(1) when two-position relay 3KKJ position after closing a floodgate of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the open position relay 4TWJ of the 4th circuit breaker 4QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes the charging of closing a floodgate and controls after charging time delay (delay time is 4Tcd3, can be made as 20 seconds).
Control procedure J. the 4th circuit breaker 4QF closes a floodgate and controls
Condition a. the 4th circuit breaker 4QF combined floodgate controlled condition one:
(1) when really tripping of the first circuit breaker 1QF has been sent and checked to the first circuit breaker 1QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1) when the 3rd main transformer high side voltage, the two-position relay 1KKJ of while the first circuit breaker 1QF hand control switch 1KK or its deciliter state after closing a floodgate position and the first circuit breaker 1QF in open position (being that 1QF circuit breaker position is not corresponding);
(2) 4Tcd1 charging delay time arrives;
(3) the 3rd main transformer protections do not move;
In the time that above condition meets, output pulse control signal to the four circuit breaker 4QF combined floodgate control loops after time delay (delay time is tH4), the 4th circuit breaker 4QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Condition b. the 4th circuit breaker 4QF combined floodgate controlled condition two:
(1) when the 3rd main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1), the two-position relay 2KKJ of while the second circuit breaker 2QF hand control switch 2KK or its deciliter state after closing a floodgate position and the second circuit breaker 2QF in open position (being that 2QF circuit breaker position is not corresponding);
(2) 4Tcd2 charging delay time arrives;
(3) the 3rd main transformer protections do not move;
In the time that above condition all meets, output pulse control signal to the four circuit breaker 4QF combined floodgate control loops after time delay (delay time is tH4) equally, the 4th circuit breaker 4QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
Condition c. the 4th circuit breaker 4QF combined floodgate controlled condition three:
(1) when the 3rd main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate (closing a floodgate inspection mark KG2 with no pressure while being 1), the two-position relay 3KKJ of while the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state after closing a floodgate position and the 3rd circuit breaker 3QF in open position (being that 3QF circuit breaker position is not corresponding);
(2) 4Tcd3 charging delay time arrives;
(3) the 3rd main transformer protections do not move;
In the time that above condition all meets, output pulse control signal to the four circuit breaker 4QF combined floodgate control loops after time delay (delay time is tH4) equally, the 4th circuit breaker 4QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.
The control of control procedure K. abnormal signal
(1) when the first main transformer high-pressure side or low-pressure side voltage are less than the inspection definite value with no pressure of closing a floodgate (in the time that the inspection mark KG2 with no pressure that closes a floodgate is 1), or second main transformer high-pressure side or low-pressure side voltage be less than the inspection definite value with no pressure of closing a floodgate (inspection mark KG3 with no pressure is closing a floodgate) at 1 o'clock, or the 3rd main transformer high-pressure side or low-pressure side voltage be less than the inspection definite value with no pressure of closing a floodgate (the inspection mark KG2 with no pressure that closes a floodgate is) at 1 o'clock, after certain time-delay, send abnormal signal;
(2) when the first circuit breaker 1QF does not send tripping operation control command, be less than two-position relay 1KKJ that trip inspection definite value with no pressure and the first circuit breaker 1QF manually control circuit breaker 1KK or its deciliter state when position, after certain time-delay, send abnormal signal after closing a floodgate and the first circuit breaker 1QF source current 1I1 is less than trip inspection no flow setpoint or the first circuit breaker 1QF supply voltage 1U1;
(3) when the 4th circuit breaker 4QF does not send tripping operation control command, be less than two-position relay 4KKJ that trip inspection definite value with no pressure and 4QF manually control circuit breaker 4KK or its deciliter state when position, after certain time-delay, send abnormal signal after closing a floodgate and the 4th circuit breaker 4QF source current 4I1 is less than trip inspection no flow setpoint or the 4th circuit breaker 4QF supply voltage 2U1.
The method that microcomputer control standby power of the present invention drops into automatically meets the general principle that stand-by power supply drops into automatically completely, and compared with the method using in existing microcomputer type automatic throw-in equipment of emergency power supply, tool has the following advantages:
1. the main electrical scheme of 220kV and following electric substation that is applicable to transmission and distribution networks is the technical scheme that expands internal bridge automatic throw-in equipment of emergency power supply.
2. adopted by the switch of power supply (or losing power supply) and completed charging and discharging circuit control program, while thering is equally combined floodgate, checked advantage easily with no pressure;
3. the same not corresponding startup loop that adopts similar reclosing, start one of loop as prepared auto restart, there is clear and definite, simple, the reliable advantage of operating criterion, and can correct circuit breaker jump, the correction loop of the circuit breaker jump of need not separately setting up defences, thereby each circuit breaker jump problem, particularly bridge circuit breaker jump problem are solved;
4. adopted by check power supply dead electricity loop start power supply circuit breaker trip time start prepared auto restart closing circuit, start two of loop as prepared auto restart, can be used as not corresponding startup loop and start supplementing of loop as prepared auto restart, make the startup of prepared auto restart more reliable;
5. while having adopted combined floodgate, check scheme with no pressure (also can adopt while combined floodgate and check and the scheme same period only need go out to add this function in this logic), when having solved when the electric substation moving and having had local power plant, prevent the problem of non-Switching Synchronization;
6. the scheme that has adopted the corresponding main transformer breaker closing of which platform main transformer protection action blocking, prevents from causing full institute of this electric substation dead electricity.
Brief description of the drawings
Fig. 1 is that stand-by power supply drops into the expansion internal bridge schematic diagram that an applicable main electrical scheme is standard automatically;
Fig. 2 is the logic diagram of the inventive method.
Control word in Fig. 2 is described as follows:
Control word title Control word is 1 o'clock Control word is 0 o'clock
Trip inspection has pressure-controlled word KG1 Trip inspection has compression functions to drop into Trip inspection has compression functions to exit
Inspection control word KG2 with no pressure closes a floodgate The inspection of closing a floodgate drops into without compression functions The inspection of closing a floodgate is exited without compression functions
In Fig. 2, letter is described as follows:
<1U1-represents that the first circuit breaker 1QF supply voltage is less than trip inspection definite value with no pressure, and 1QF is with no pressure;
<2U1-represents that the 4th circuit breaker 4QF supply voltage is less than trip inspection definite value with no pressure, and 4QF is with no pressure;
>1U1-represents that the first circuit breaker 1QF supply voltage is greater than trip inspection and has compression set value, and 1QF has pressure;
>2U1-represents that the 4th circuit breaker 4QF supply voltage is greater than trip inspection and has compression set value, and 4QF has pressure;
<1I1-represents that the first circuit breaker 1QF source current is less than trip inspection no flow setpoint, and 1QF is without stream;
<4I1-represents that the 4th circuit breaker 4QF source current is less than trip inspection no flow setpoint, and 4QF is without stream;
<1UT2-represents that the first main transformer high-pressure side or low-pressure side bus voltage are less than the inspection definite value with no pressure of closing a floodgate;
<2UT2-represents that the second main transformer high-pressure side or low-pressure side bus voltage are less than the inspection definite value with no pressure of closing a floodgate;
<3UT2-represents that the 3rd main transformer high-pressure side or low-pressure side bus voltage are less than the inspection definite value with no pressure of closing a floodgate;
1KKJ-represents that 1QF manually controls two-position relay position after closing a floodgate of circuit breaker 1KK or its deciliter state;
2KKJ-represents that 2QF manually controls two-position relay position after closing a floodgate of circuit breaker 2KK or its deciliter state;
3KKJ-represents that 3QF manually controls two-position relay position after closing a floodgate of circuit breaker 3KK or its deciliter state;
4KKJ-represents that 4QF manually controls two-position relay position after closing a floodgate of circuit breaker 4KK or its deciliter state;
1TWJ-represents that the first circuit breaker 1QF is in open position;
2TWJ-represents that the second circuit breaker 2QF is in open position;
3TWJ-represents that the 3rd circuit breaker 3QF is in open position;
4TWJ-represents that the 4th circuit breaker 4QF is in open position;
1BCJ-represents the first main transformer depressor protection action;
2BCJ-represents the second main transformer depressor protection action;
3BCJ-represents the 3rd main transformer depressor protection action;
1# becomes inspection, and with no pressure-expression the first main transformer high-pressure side or low-pressure side voltage are less than " inspection of closing a floodgate is with no pressure " definite value, i.e. off-the-line of the grid-connected small power supply of this transformer;
2# becomes inspection, and with no pressure-expression the second main transformer high-pressure side or low-pressure side voltage are less than " inspection of closing a floodgate is with no pressure " definite value, i.e. off-the-line of the grid-connected small power supply of this transformer;
3# becomes inspection, and with no pressure-expression the 3rd main transformer high-pressure side or low-pressure side voltage are less than " inspection of closing a floodgate is with no pressure " definite value, i.e. off-the-line of the grid-connected small power supply of this transformer;
In Fig. 2, symbol description is as follows:
presentation logic and relation, when initial conditions all meets, output is effectively;
presentation logic or relation, initial conditions is arbitrary while meeting, and output is effectively;
represent the delay tripping time;
represent time delay 20 seconds;
represent charging delay time;
represent the time-delay closing time;
represent 200ms pulse output;
represent the first circuit breaker 1QF trip(ping) circuit;
represent the second circuit breaker 2QF trip(ping) circuit;
represent the 3rd circuit breaker 3QF trip(ping) circuit;
represent the 4th circuit breaker 4QF trip(ping) circuit;
represent the first circuit breaker 1QF closing circuit;
represent the second circuit breaker 2QF closing circuit;
represent the 3rd circuit breaker 3QF closing circuit;
represent the 4th circuit breaker 4QF closing circuit
represent prepared auto restart tripping operation actuating signal;
represent prepared auto restart feed motion signal;
be expressed as contrary with input signal;
represent abnormal signal;
Embodiment
As shown in Figure 1, in the applied transmission and distribution networks of method of the present invention, include two-way power supply, on two-way power supply, be serially connected with respectively the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF, also connect respectively three main transformers (i.e. the first main transformer, the second main transformer and the 3rd main transformer), the line side of electric power incoming line and high voltage side of transformer or low-pressure side are all connected to voltage transformer.Be two-way electric power incoming line, three step-down main transformers, four circuit breakers.
Provide the inventive method below and be applied to the stand-by power supply embodiment of the expansion internal bridge form of input automatically:
1, operational mode 1
1.1 the preparatory stage
Circuit breaker 1QF, 2QF, 3QF are combined floodgate running status, its corresponding operating breaker 1KK, 2KK, 3KK (or two-position relay 1KKJ, 2KKJ, 3KKJ) memory is for after closing a floodgate, 4QF is stand-by heat, after its corresponding operating breaker 4KK (or two-position relay 4KKJ) memory is separating brake.Because 1KK, 2KK, 3KK are state after closing a floodgate, so 1QF trip(ping) circuit is open, and 1QF, 2QF, the locking of 3QF closing circuit; Open 4QF combined floodgate charge circuit 4Tcd1,4Tcd2,4Tcd3 charge in the time that 4QF meets charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
1.2 course of action
1.2.1 inlet wire 1 power supply dead electricity
(1) because inlet wire 1 power supply dead electricity is examined with no pressure and has after pressure without stream, offside 4QF power supply through 1QF, 1QF trips after time delay tT1.In the time that the first circuit breaker 1QF tripping operation control command has been sent 1QF tripping operation and check the really tripping of 1QF circuit breaker, after the first circuit breaker 1QF tripping operation, 1TWJ is closed represents that 1QF is in trip position, and 1KKJ is state after closing a floodgate, thereby generation the first circuit breaker 1QF position is not corresponding, after 4QF combined floodgate charge circuit 4Tcd1 has charged, time delay tH4 starts a closing pulse to 4QF closing circuit.Or 4QF was open position originally, after sending, the first circuit breaker 1QF tripping operation control command confirms really tripping (becoming open position) of 1QF, after 4QF combined floodgate charge circuit 4Tcd1 has charged, time delay tH4 starts a closing pulse to 4QF closing circuit.
(2) if power supply dead electricity be caused by the first main transformer protection action or the action of the second main transformer protection cause; because protection action locking has adopted blocking; the 4th circuit breaker 4QF combined floodgate charge circuit can not be discharged and be blocked; therefore 4QF still can move combined floodgate, can ensure that like this electric substation's the second main transformer, the 3rd main transformer or the first main transformer, the 3rd main transformer still can move.
(3) if the 3rd main transformer dead electricity caused by the 3rd main transformer protection action; because protection action locking has adopted blocking; the electric discharge immediately due to protection action of 4QF charge circuit; 4QF closing circuit is blocked simultaneously; therefore 4QF can not close a floodgate, thereby ensure that electric substation's the first main transformer, the second main transformer still can move.
(4) if power supply dead electricity cause because of the first circuit breaker 1QF jump, 1TWJ can be closed, and 1KKJ is still state after closing a floodgate, and produces equally the first circuit breaker 1QF position not corresponding, on inspection the 3rd main transformer with no pressure after, time delay tH4 start a closing pulse to 4QF closing circuit.
(5) if power supply dead electricity cause because of 2QF circuit breaker jump, 2TWJ can be closed, and 2KKJ is still state after closing a floodgate, and produces equally 2QF circuit breaker position not corresponding, on inspection the 3rd main transformer with no pressure after, time delay tH4 start a closing pulse to 4QF closing circuit.
(6) if power supply dead electricity cause because of 3QF circuit breaker jump, 3TWJ can be closed, and 3KKJ is still state after closing a floodgate, and produces equally 3QF circuit breaker position not corresponding, on inspection the 3rd main transformer with no pressure after, time delay tH4 start a closing pulse to 4QF closing circuit.
(7) if manually pull open 1QF or 2QF or 3QF, 1KKJ or 2KKJ or 3KKJ state after original combined floodgate becomes state after separating brake, the circuit breaker position of 1QF or 2QF or 3QF is not corresponding is false, 4Tcd1,4Tcd2, the electric discharge of 4Tcd3 charge circuit simultaneously, therefore can not start the closing circuit of 4QF.
2, operational mode 2
2.1 the preparatory stage
Circuit breaker 1QF, 2QF, 4QF are combined floodgate running status, its corresponding operating breaker 1KK, 2KK, 4KK (or two-position relay 1KKJ, 2KKJ, 4KKJ) memory is for after closing a floodgate, 3QF is stand-by heat, after its corresponding operating breaker 3KK (or two-position relay 3KKJ) memory is separating brake.Because 1KK, 2KK, 4KK are state after closing a floodgate, so 1QF, 2QF, 4QF trip(ping) circuit are open, and closing circuit locking; Open 3QF combined floodgate charge circuit 3Tcd1,3Tcd2,3Tcd3 charge in the time that 3QF meets charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
2.2 course of action
2.2.1 inlet wire 1 power supply dead electricity
(1) because inlet wire 1 power supply dead electricity is examined with no pressure and has after pressure without stream, offside 4QF power supply through 1QF, 1QF trips after time delay tT1.In the time that the first circuit breaker 1QF tripping operation control command has been sent 1QF tripping operation and check really tripping of the first circuit breaker 1QF, after 1QF tripping operation, 1TWJ is closed represents that 1QF is in trip position, and 1KKJ is state after closing a floodgate, thereby generation the first circuit breaker 1QF position is not corresponding, after 3QF combined floodgate charge circuit 3Tcd1 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit.Or 3QF was open position originally, after sending, the first circuit breaker 1QF tripping operation control command confirms really tripping (becoming open position) of 1QF, after 3QF combined floodgate charge circuit 3Tcd1 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit.
(2) if power supply dead electricity caused by the first main transformer protection action; because protection action locking has adopted blocking; 3QF combined floodgate charge circuit can not be discharged and be blocked; therefore 3QF still can move combined floodgate (all to have produced circuit breaker position not corresponding due to tripping operation for 1QF and 2QF circuit breaker, lower with).Can ensure that like this electric substation's the second main transformer, the 3rd main transformer still can move.
(3) if power supply dead electricity cause because of the first circuit breaker 1QF jump, 1TWJ can be closed, and 1KKJ is still state after closing a floodgate, and produces equally the first circuit breaker 1QF position not corresponding, on inspection the first main transformer with no pressure after, time delay tH3 start a closing pulse to 3QF closing circuit.
(4) if power supply dead electricity cause because of the second circuit breaker 2QF jump, 2TWJ can be closed, and 2KKJ is still state after closing a floodgate, and produces equally the second circuit breaker 2QF position not corresponding, on inspection the second main transformer with no pressure after, time delay tH3 start a closing pulse to 3QF closing circuit.
(5) if the second main transformer dead electricity caused by the second main transformer protection action, because protection action locking has adopted blocking, 3QF combined floodgate charge circuit can be discharged and be blocked, therefore 3QF still can not move combined floodgate.Can ensure that like this electric substation's the first main transformer, the 3rd main transformer still can move.
(6) if manually pull open 1QF, 2QF, 1KKJ, 2KKJ state after original combined floodgate becomes state after separating brake, and the circuit breaker position of 1QF, 2QF is not corresponding is false, and 3Tcd1, the electric discharge of 3Tcd3 charge circuit simultaneously, therefore can not start the closing circuit of 3QF.
2.2.2 inlet wire 2 power supply dead electricity
(1) because inlet wire 2 power supply dead electricity are examined with no pressure and have after pressure without stream, offside 1QF power supply through 4QF, 4QF trips after time delay tT4.In the time that the 4th circuit breaker 4QF tripping operation control command has been sent 4QF tripping operation and check the 4th circuit breaker 4QF tripping, after 4QF tripping operation, 4TWJ is closed represents that 4QF is in trip position, and 4KKJ is state after closing a floodgate, thereby generation the 4th circuit breaker 4QF position is not corresponding, after 3QF combined floodgate charge circuit 3Tcd2 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit.Or 3QF was open position originally, after sending, the 4th circuit breaker 4QF tripping operation control command confirms really tripping (becoming open position) of 4QF, after 3QF combined floodgate charge circuit 3Tcd2 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit.
(2) if power supply dead electricity caused by the 3rd main transformer protection action, because protection action locking has adopted blocking, 3QF combined floodgate charge circuit can be discharged and be blocked, therefore 3QF still can not move combined floodgate.Can ensure that like this electric substation's the first main transformer, the second main transformer still can move.
(3) if power supply dead electricity cause because of the 4th circuit breaker 4QF jump, 4TWJ can be closed, and 4KKJ is still state after closing a floodgate, and produces equally the 4th circuit breaker 4QF position not corresponding, on inspection the 3rd main transformer with no pressure after, time delay tH3 start a closing pulse to 3QF closing circuit.
(4) if manually pull open 4QF, 4KKJ state after original combined floodgate becomes state after separating brake, and the circuit breaker position of 4QF is not corresponding is false, and 4Tcd2 charge circuit electric discharge simultaneously, therefore can not start the closing circuit of 3QF.
3, operational mode 3
3.1 the preparatory stage
Circuit breaker 1QF, 3QF, 4QF are combined floodgate running status, its corresponding operating breaker 1KK, 3KK, 4KK (or two-position relay 1KKJ, 3KKJ, 4KKJ) memory is for after closing a floodgate, 2QF is stand-by heat, after its corresponding operating breaker 2KK (or two-position relay 2KKJ) memory is separating brake.Because 1KK, 3KK, 4KK are state after closing a floodgate, so 1QF, 3QF, 4QF trip(ping) circuit are open, and closing circuit locking; Open 2QF combined floodgate charge circuit 2Tcd1,2Tcd2,2Tcd3 charge in the time that 2QF meets charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
3.2 course of action
3.2.1 inlet wire 1 power supply dead electricity
(1) because inlet wire 1 power supply dead electricity is examined with no pressure and has after pressure without stream, offside 1QF power supply through 1QF, 1QF trips after time delay tT1.In the time that the first circuit breaker 1QF tripping operation control command has been sent 1QF tripping operation and check really tripping of the first circuit breaker 1QF, after 1QF tripping operation, 1TWJ is closed represents that 1QF is in trip position, and 1KKJ is state after closing a floodgate, thereby generation the first circuit breaker 1QF position is not corresponding, after 2QF combined floodgate charge circuit 2Tcd1 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit.Or 2QF was open position originally, after sending, the first circuit breaker 1QF tripping operation control command confirms really tripping (becoming open position) of 1QF, after 2QF combined floodgate charge circuit 2Tcd1 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit.
(2) if power supply dead electricity caused by the first main transformer protection action, because protection action locking has adopted blocking, 2QF combined floodgate charge circuit can be discharged and be blocked, therefore 2QF still can not move combined floodgate.Can ensure that like this electric substation's the second main transformer, the 3rd main transformer still can move.
(3) if power supply dead electricity cause because of the first circuit breaker 1QF jump, 1TWJ can be closed, and 1KKJ is still state after closing a floodgate, the same first circuit breaker 1QF position that produces is not corresponding, on inspection the first main transformer depressor with no pressure after, time delay tH2 start a closing pulse to 2QF closing circuit.
(4) if manually pull open 1QF, 1KKJ state after original combined floodgate becomes state after separating brake, and the circuit breaker position of 1QF is not corresponding is false, and 2Tcd1 charge circuit electric discharge simultaneously, therefore can not start the closing circuit of 2QF.
3.2.2 inlet wire 2 power supply dead electricity
(1) because inlet wire 2 power supply dead electricity are examined with no pressure and have after pressure without stream, offside 1QF power supply through 4QF, 4QF trips after time delay tT4.In the time that the 4th circuit breaker 4QF tripping operation control command has been sent 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF, after 4QF tripping operation, 4TWJ is closed represents that 4QF is in trip position, and 4KKJ is state after closing a floodgate, thereby generation the 4th circuit breaker 4QF position is not corresponding, after 2QF combined floodgate charge circuit 2Tcd2 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit.Or 2QF was open position originally, after sending, the 4th circuit breaker 4QF tripping operation control command confirms really tripping (becoming open position) of 4QF, after 2QF combined floodgate charge circuit 2Tcd2 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit.
(2) if power supply dead electricity caused by the 3rd main transformer protection action, because protection action locking has adopted blocking, 2QF combined floodgate charge circuit can not be discharged and be blocked, therefore 2QF still can move combined floodgate.Can ensure that like this electric substation's the first main transformer, the second main transformer still can move.
(3) if power supply dead electricity cause because of the 4th circuit breaker 4QF jump, 4TWJ can be closed, and 4KKJ is still state after closing a floodgate, and produces equally the 4th circuit breaker 4QF position not corresponding, on inspection the 3rd main transformer with no pressure after, time delay tH3 start a closing pulse to 3QF closing circuit.
(4) if power supply dead electricity cause because of the 3rd circuit breaker 3QF jump, 3TWJ can be closed, and 3KKJ is still state after closing a floodgate, and produces equally the 3rd circuit breaker 3QF position not corresponding, on inspection the second main transformer with no pressure after, time delay tH2 start a closing pulse to 2QF closing circuit.
(5) if the second main transformer protection dead electricity caused by the second main transformer protection action, because protection action locking has adopted blocking, 2QF combined floodgate charge circuit can be discharged and be blocked, therefore 2QF still can not move combined floodgate.Can ensure that like this electric substation's the first main transformer, the 3rd main transformer still can move.
(6) if manually pull open 3QF, 4QF, 3KKJ, 4KKJ state after original combined floodgate becomes state after separating brake, and the circuit breaker position of 3QF, 4QF is not corresponding is false, and 3Tcd3, the electric discharge of 3Tcd2 charge circuit simultaneously, therefore can not start the closing circuit of 2QF.
4, operational mode 4
4.1 the preparatory stage
Circuit breaker 2QF, 3QF, 4QF are combined floodgate running status, its corresponding operating breaker 2KK, 3KK, 4KK (or two-position relay 2KKJ, 3KKJ, 4KKJ) memory is for after closing a floodgate, 1QF is stand-by heat, after its corresponding operating breaker 1KK (or two-position relay 1KKJ) memory is separating brake.Because 2KK, 3KK, 4KK are state after closing a floodgate, so 4QF trip(ping) circuit is open, and 2QF, 3QF, the locking of 4QF closing circuit; Open 1QF combined floodgate charge circuit 1Tcd1,1Tcd2,1Tcd3 charge in the time that 1QF meets charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
4.2 course of action
4.2.1 inlet wire 2 power supply dead electricity
(1) because inlet wire 2 power supply dead electricity are examined with no pressure and have after pressure without stream, offside 1QF power supply through 4QF, 4QF trips after time delay tT4.In the time that the 4th circuit breaker 4QF tripping operation control command has been sent 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF, after 4QF tripping operation, 4TWJ is closed represents that 4QF is in trip position, and 4KKJ is state after closing a floodgate, thereby generation the 4th circuit breaker 4QF position is not corresponding, after 1QF combined floodgate charge circuit 1Tcd1 has charged, time delay tH1 starts a closing pulse to 1QF closing circuit.Or 1QF was open position originally, after sending, the 4th circuit breaker 4QF tripping operation control command confirms really tripping (becoming open position) of 4QF, after 1QF combined floodgate charge circuit 1Tcd1 has charged, time delay tH1 starts a closing pulse to 1QF closing circuit.
(2) if power supply dead electricity caused by the 3rd main transformer protection action; because protection action locking has adopted blocking; 1QF combined floodgate charge circuit can not be discharged and be blocked; therefore 1QF still can move combined floodgate, can ensure like this electric substation's the first main transformer, the second main transformer.
(3) if the first main transformer dead electricity caused by the first main transformer protection action; because protection action locking has adopted blocking; the electric discharge immediately due to protection action of 1QF charge circuit; 1QF closing circuit is blocked simultaneously; therefore 1QF can not close a floodgate, thereby ensure that electric substation's the second main transformer, the 3rd main transformer still can move.
(4) if the second main transformer dead electricity caused by the second main transformer protection action; because protection action locking has adopted blocking; 1QF combined floodgate charge circuit can not be discharged and be blocked; therefore 1QF still can move combined floodgate, thereby has ensured that electric substation's the first main transformer, the 3rd main transformer still can move.
(5) if power supply dead electricity cause because of the 4th circuit breaker 4QF jump, 4TWJ can be closed, and 4KKJ is still state after closing a floodgate, and produces equally the 4th circuit breaker 4QF position not corresponding, on inspection the first main transformer with no pressure after, time delay tH1 start a closing pulse to 1QF closing circuit.
(6) if power supply dead electricity cause because of the second circuit breaker 2QF jump, 2TWJ can be closed, and 2KKJ is still state after closing a floodgate, and produces equally the second circuit breaker 2QF position not corresponding, on inspection the first main transformer with no pressure after, time delay tH1 start a closing pulse to 1QF closing circuit.
(7) if power supply dead electricity cause because of the 3rd circuit breaker 3QF jump, 3TWJ can be closed, and 3KKJ is still state after closing a floodgate, and produces equally the 3rd circuit breaker 3QF position not corresponding, on inspection the first main transformer with no pressure after, time delay tH1 start a closing pulse to 1QF closing circuit.
(8) if manually pull open 4QF or 2QF or 3QF, 4KKJ or 2KKJ or 3KKJ state after original combined floodgate becomes state after separating brake, the circuit breaker position of 4QF or 2QF or 3QF is not corresponding is false, 1Tcd1,1Tcd2, the electric discharge of 1Tcd3 charge circuit simultaneously, therefore can not start the closing circuit of 4QF.
5, operational mode 5
5.1 the preparatory stage
Circuit breaker 1QF, 2QF are combined floodgate running status, its corresponding operating breaker 1KK, 2KK (or two-position relay 1KKJ, 2KKJ) memory is for after closing a floodgate, 3QF, 4QF are stand-by heat, after its corresponding operating breaker 3KK, 4KK (or two-position relay 3KKJ, 4KKJ) memory is separating brake.Because 1KK, 2KK are state after closing a floodgate, so 1QF trip(ping) circuit is open, and 1QF, the locking of 2QF closing circuit; Open 3QF, 4QF combined floodgate charge circuit 3Tcd1,3Tcd3 and 4Tcd1,4Tcd2 charge in the time that 3QF, 4QF meet charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
5.2 course of action
5.2.1 inlet wire 1 power supply dead electricity
(1) because inlet wire 1 power supply dead electricity is examined with no pressure and has after pressure without stream, offside 4QF power supply through 1QF, 1QF trips after time delay tT1.In the time that the first circuit breaker 1QF tripping operation control command has been sent 1QF tripping operation and check really tripping of the first circuit breaker 1QF, after 1QF tripping operation, 1TWJ is closed represents that 1QF is in trip position, and 1KKJ is state after closing a floodgate, thereby generation the first circuit breaker 1QF position is not corresponding, after 3QF combined floodgate charge circuit 3Tcd1 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit, after 4QF combined floodgate charge circuit 4Tcd1 has charged, time delay tH4 starts a closing pulse to 4QF closing circuit simultaneously.Or 3QF, 4QF were open position originally, after sending, the first circuit breaker 1QF tripping operation control command confirms really tripping (becoming open position) of 1QF, after 3QF, 4QF combined floodgate charge circuit 3Tcd1,4Tcd1 have charged, time delay tH3, tH4 start a closing pulse to 3QF, 4QF closing circuit.
(2) if power supply dead electricity caused by the first main transformer protection action; because protection action locking has adopted blocking; 3QF, 4QF charge circuit can not discharge; after 3QF combined floodgate charge circuit 3Tcd1 has charged; time delay tH3 starts a closing pulse to 3QF closing circuit; after 4QF combined floodgate charge circuit 4Tcd1 has charged, time delay tH4 starts a closing pulse to 4QF closing circuit simultaneously.
(3) if power supply dead electricity cause because of 1QF circuit breaker jump, 1TWJ can be closed, and 1KKJ is still state after closing a floodgate, same generation 1QF circuit breaker position is not corresponding, on inspection the first main transformer with no pressure after, time delay tH3 start a closing pulse to 3QF closing circuit, on inspection the 3rd main transformer with no pressure after, time delay tH4 start a closing pulse to 4QF closing circuit.
(4) if power supply dead electricity cause because of the second circuit breaker 2QF jump, 2TWJ can be closed, and 2KKJ is still state after closing a floodgate, the same second circuit breaker 2QF position that produces is not corresponding, on inspection the second main transformer with no pressure after, time delay tH3 start a closing pulse to 3QF closing circuit, on inspection the 3rd main transformer with no pressure after, time delay tH4 start a closing pulse to 4QF closing circuit.
(5) if the second main transformer dead electricity is reason, the second main transformer protection action causes, 2TWJ can be closed, and 2KKJ is still state after closing a floodgate, same generation the second circuit breaker 2QF circuit breaker position is not corresponding, because protection action locking has adopted blocking, 4QF charge circuit can not discharge, on inspection the 3rd main transformer depressor with no pressure after, time delay tH4 start a closing pulse to 4QF closing circuit; And 3QF charge circuit can be due to the second main transformer protection action electric discharge, therefore 3QF can not close a floodgate.
(6) if manually pull open 1QF or 2QF, 1KKJ or 2KKJ state after original combined floodgate becomes state after separating brake, the circuit breaker position of 1QF or 2QF is not corresponding is false, and 3Tcd1,3Tcd3,4Tcd1, the electric discharge of 4Tcd2 charge circuit simultaneously, therefore can not start the closing circuit of 3QF, 4QF.
6, operational mode 6
6.1 the preparatory stage
Circuit breaker 1QF, 4QF are combined floodgate running status, its corresponding operating breaker 1KK, 4KK (or two-position relay 1KKJ, 4KKJ) memory is for after closing a floodgate, 2QF, 3QF are stand-by heat, after its corresponding operating breaker 2KK, 3KK (or two-position relay 2KKJ, 3KKJ) memory is separating brake.Because 1KK, 4KK are state after closing a floodgate, so 1QF, 4QF trip(ping) circuit are open, and closing circuit locking; Open 2QF, 3QF combined floodgate charge circuit 2Tcd1,2Tcd2 and 3Tcd1,3Tcd2 charge in the time that 2QF, 3QF meet charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
6.2 course of action
6.2.1 inlet wire 1 power supply dead electricity
(1) because inlet wire 1 power supply dead electricity is examined with no pressure and has after pressure without stream, offside 4QF power supply through 1QF, 1QF trips after time delay tT1.In the time that the first circuit breaker 1QF tripping operation control command has been sent 1QF tripping operation and check really tripping of the first circuit breaker 1QF, after 1QF tripping operation, 1TWJ is closed represents that 1QF is in trip position, and 1KKJ is state after closing a floodgate, thereby it is not corresponding to produce the first circuit breaker 1QF circuit breaker position, after 2QF combined floodgate charge circuit 2Tcd1 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd1 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit.Or 2QF, 3QF were open position originally, after sending, the first circuit breaker 1QF tripping operation control command confirms really tripping (becoming open position) of 1QF, after 2QF, 3QF combined floodgate charge circuit 2Tcd1,3Tcd1 have charged, time delay tH2, tH3 start a closing pulse to 2QF, 3QF closing circuit.
(2) if power supply dead electricity caused by the first main transformer protection action, because protection action locking has adopted blocking, 3QF combined floodgate charge circuit can not be discharged and be blocked, therefore 3QF still can move combined floodgate.And the electric discharge immediately due to the first main transformer protection action of 2QF charge circuit, 2QF closing circuit is blocked simultaneously, therefore 2QF can not close a floodgate.
(3) if power supply dead electricity cause because of the first circuit breaker 1QF jump, 1TWJ can be closed, and 1KKJ is still state after closing a floodgate, the same first circuit breaker 1QF position that produces is not corresponding, after 2QF combined floodgate charge circuit 2Tcd1 has charged, on inspection the first main transformer with no pressure after, time delay tH2 start a closing pulse to 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd1 has charged, on inspection the first main transformer depressor with no pressure after, time delay tH3 start a closing pulse to 3QF closing circuit.
(4) if manually pull open 1QF, 1KKJ state after original combined floodgate becomes state after separating brake, and the circuit breaker position of 1QF is not corresponding is false, and 1Tcd1, the electric discharge of 2Tcd1 charge circuit simultaneously, therefore can not start the closing circuit of 2QF, 3QF.
6.2.2 inlet wire 2 power supply dead electricity
(1) because inlet wire 2 power supply dead electricity are examined with no pressure and have after pressure without stream, offside 1QF power supply through 4QF, 4QF trips after time delay tT4.In the time that the 4th circuit breaker 4QF tripping operation control command has been sent 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF, after 4QF tripping operation, 4TWJ is closed represents that 4QF is in trip position, and 4KKJ is state after closing a floodgate, thereby generation the 4th circuit breaker 4QF position is not corresponding, after 2QF combined floodgate charge circuit 2Tcd2 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd2 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit.Or 2QF, 3QF were open position originally, after sending, the 4th circuit breaker 4QF tripping operation control command confirms really tripping (becoming open position) of 4QF, after 2QF, 3QF combined floodgate charge circuit 2Tcd2,3Tcd2 have charged, time delay tH2, tH3 start a closing pulse to 2QF, 3QF closing circuit.
(2) if power supply dead electricity caused by the 3rd main transformer protection action, because protection action locking has adopted blocking, 2QF combined floodgate charge circuit can not be discharged and be blocked, therefore 2QF still can move combined floodgate.And the electric discharge immediately due to the 3rd main transformer protection action of 3QF charge circuit, 3QF closing circuit is blocked simultaneously, therefore 3QF can not close a floodgate.
(3) if power supply dead electricity cause because of the 4th circuit breaker 4QF jump, 4TWJ can be closed, and 4KKJ is still state after closing a floodgate, same the 4th circuit breaker 4QF position that produces is not corresponding, after 2QF combined floodgate charge circuit 2Tcd2 has charged, on inspection the 3rd main transformer with no pressure after, time delay tH2 start a closing pulse to 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd2 has charged, on inspection the 3rd main transformer with no pressure after, time delay tH3 start a closing pulse to 3QF closing circuit.
(4) if manually pull open 4QF, 4KKJ state after original combined floodgate becomes state after separating brake, and the circuit breaker position of 4QF is not corresponding is false, and 2Tcd2, the electric discharge of 3Tcd2 charge circuit simultaneously, therefore can not start the closing circuit of 2QF, 3QF.
7, operational mode 7
7.1 the preparatory stage
Circuit breaker 3QF, 4QF are combined floodgate running status, its corresponding operating breaker 3KK, 4KK (or two-position relay 3KKJ, 4KKJ) memory is for after closing a floodgate, 1QF, 2QF are stand-by heat, after its corresponding operating breaker 1KK, 2KK (or two-position relay 1KKJ, 2KKJ) memory is separating brake.Because 3KK, 4KK are state after closing a floodgate, so 4QF trip(ping) circuit is open, and 3QF, the locking of 4QF closing circuit; Open 1QF, 2QF combined floodgate charge circuit 1Tcd1,1Tcd3 and 2Tcd3,2Tcd2 charge in the time that 1QF, 2QF meet charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
7.2 course of action
7.2.1 inlet wire 2 power supply dead electricity
(1) because inlet wire 2 power supply dead electricity are examined with no pressure and have after pressure without stream, offside 1QF power supply through 4QF, 4QF trips after time delay tT4.In the time that the 4th circuit breaker 4QF tripping operation control command has been sent 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF, after 4QF tripping operation, 4TWJ is closed represents that 4QF is in trip position, and 4KKJ is state after closing a floodgate, thereby generation the 4th circuit breaker 4QF position is not corresponding, after 1QF combined floodgate charge circuit 1Tcd1 has charged, time delay tH1 starts a closing pulse to 1QF closing circuit; After 2QF combined floodgate charge circuit 2Tcd2 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit simultaneously.Or 1QF, 2QF were open position originally, after sending, the 4th circuit breaker 4QF tripping operation control command confirms really tripping (becoming open position) of 4QF, after 1QF, 2QF combined floodgate charge circuit 1Tcd1,2Tcd2 have charged, time delay tH1, tH2 start a closing pulse to 1QF, 2QF closing circuit.
(2) if power supply dead electricity caused by the 3rd main transformer protection action, because protection action locking has adopted blocking, 1QF, 2QF charge circuit can not be discharged and be blocked, therefore 1QF, 2QF still can move combined floodgate.
(3) if power supply dead electricity cause because of the 4th circuit breaker 4QF jump, 4TWJ can be closed, and 4KKJ is still state after closing a floodgate, same generation the 4th circuit breaker 4QF circuit breaker position is not corresponding, on inspection the first main transformer with no pressure after, time delay tH1 start a closing pulse to 1QF closing circuit, on inspection the 3rd main transformer with no pressure after, time delay tH2 start a closing pulse to 2QF closing circuit.
(4) if power supply dead electricity cause because of the 3rd circuit breaker 3QF jump, 3TWJ can be closed, and 3KKJ is still state after closing a floodgate, and produces equally the 3rd circuit breaker 3QF position not corresponding, on inspection the first main transformer with no pressure after, time delay tH1 start a closing pulse to 1QF closing circuit; On inspection the second main transformer with no pressure after, time delay tH2 start a closing pulse to 2QF closing circuit.
(5) if power supply dead electricity is reason, the second main transformer protection action causes, 3TWJ can be closed, and 3KKJ is still state after closing a floodgate, same generation the 3rd circuit breaker 3QF circuit breaker position is not corresponding, because protection action locking has adopted blocking, 1QF charge circuit can not be discharged and be blocked, therefore 1QF still can move combined floodgate; And 2QF charge circuit can be due to the second main transformer protection action electric discharge, therefore 2QF can not close a floodgate.
(6) if manually pull open 3QF or 4QF, 4KKJ or 4KKJ state after original combined floodgate becomes state after separating brake, the circuit breaker position of 2QF or 4QF is not corresponding is false, and 1Tcd1,1Tcd3,2Tcd2, the electric discharge of 2Tcd3 charge circuit simultaneously, therefore can not start the closing circuit of 1QF, 2QF.
8, operational mode 8
8.1 the preparatory stage
Circuit breaker 1QF is combined floodgate running status, its corresponding operating breaker 1KK (or two-position relay 1KKJ) memory is for after closing a floodgate, 2QF, 3QF, 4QF are stand-by heat, and its corresponding operating breaker 2KK, 3KK, 4KK (or two-position relay 2KKJ, 3KKJ, 4KKJ) memory is for after separating brake.Because 1KK is state after closing a floodgate, so 1QF trip(ping) circuit is open, and closing circuit locking; Open 2QF, 3QF, 4QF combined floodgate charge circuit 2Tcd1,3Tcd1 and 4Tcd1 charge in the time that 2QF, 3QF, 4QF meet charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
8.2 course of action
8.2.1 inlet wire 1 power supply dead electricity
(1) because inlet wire 1 power supply dead electricity is examined with no pressure and has after pressure without stream, offside 4QF power supply through 1QF, 1QF trips after time delay tT1.In the time that the first circuit breaker 1QF tripping operation control command has been sent 1QF tripping operation and check really tripping of the first circuit breaker 1QF, after 1QF tripping operation, 1TWJ is closed represents that 1QF is in trip position, and 1KKJ is state after closing a floodgate, thereby generation the first circuit breaker 1QF position is not corresponding, after 2QF combined floodgate charge circuit 2Tcd1 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd1 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit simultaneously; After 4QF combined floodgate charge circuit 4Tcd1 has charged, time delay tH4 starts a closing pulse to 4QF closing circuit simultaneously.Or 2QF, 3QF, 4QF were open position originally, after sending, the first circuit breaker 1QF tripping operation control command confirms really tripping (becoming open position) of 1QF, after 2QF, 3QF, 4QF combined floodgate charge circuit 2Tcd1,3Tcd1,4Tcd1 have charged, time delay tH2, tH3, tH4 start a closing pulse to 2QF, 3QF, 4QF closing circuit.
(2) if power supply dead electricity caused by the first main transformer protection action, because protection action locking has adopted blocking, 3QF, 4QF combined floodgate charge circuit can not be discharged and be blocked, therefore 3QF, 4QF still can move combined floodgate.And the electric discharge immediately due to the first main transformer protection action of 2QF charge circuit, 2QF closing circuit is blocked simultaneously, therefore 2QF can not close a floodgate.
(3) if power supply dead electricity cause because of the first circuit breaker 1QF jump, 1TWJ can be closed, and 1KKJ is still state after closing a floodgate, the same first circuit breaker 1QF position that produces is not corresponding, on inspection the 3rd main transformer with no pressure after after 4QF combined floodgate charge circuit 4Tcd1 has charged, time delay tH4 start a closing pulse to 4QF closing circuit; On inspection the first main transformer with no pressure after after 2QF combined floodgate charge circuit 2Tcd1 has charged, time delay tH2 start a closing pulse to 2QF closing circuit; On inspection the first main transformer with no pressure after after 3QF combined floodgate charge circuit 3Tcd1 has charged, time delay tH3 start a closing pulse to 3QF closing circuit.
(4) if manually pull open 1QF, 1KKJ state after original combined floodgate becomes state after separating brake, the circuit breaker position of 1QF is not corresponding is false, therefore can not start the closing circuit of 2QF, 3QF, 4QF, 2Tcd1,3Tcd1,4Tcd1 charge circuit discharge simultaneously, also can not start the closing circuit of 2QF, 3QF, 4QF.
9, operational mode 9
9.1 the preparatory stage
Circuit breaker 4QF is combined floodgate running status, its corresponding operating breaker 4KK (or two-position relay 4KKJ) memory is for after closing a floodgate, 2QF, 3QF, 1QF are stand-by heat, and its corresponding operating breaker 2KK, 3KK, 1KK (or two-position relay 2KKJ, 3KKJ, 1KKJ) memory is for after separating brake.Because 4KK is state after closing a floodgate, so 4QF trip(ping) circuit is open, and closing circuit locking; Open 1QF, 2QF, 3QF combined floodgate charge circuit 1Tcd1,2Tcd2 and 3Tcd2 charge in the time that 1QF, 2QF, 3QF meet charge condition simultaneously, and thoroughly electric discharge immediately while not satisfying condition meets charging again after charge condition.
9.2 course of action
9.2.1 inlet wire 2 power supply dead electricity
(1) because inlet wire 2 power supply dead electricity are examined with no pressure and have after pressure without stream, offside 1QF power supply through 4QF, 4QF trips after time delay tT4.In the time that the 4th circuit breaker 4QF tripping operation control command has been sent 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF, after 4QF tripping operation, 4TWJ is closed represents that 4QF is in trip position, and 4KKJ is state after closing a floodgate, thereby generation the 4th circuit breaker 4QF position is not corresponding, after 1QF combined floodgate charge circuit 1Tcd1 has charged, time delay tH1 starts a closing pulse to 1QF closing circuit; After 2QF combined floodgate charge circuit 2Tcd2 has charged, time delay tH2 starts a closing pulse to 2QF closing circuit simultaneously; After 3QF combined floodgate charge circuit 3Tcd2 has charged, time delay tH3 starts a closing pulse to 3QF closing circuit simultaneously.Or 1QF, 2QF, 3QF were open position originally, after sending, the first circuit breaker 1QF tripping operation control command confirms really tripping (becoming open position) of 1QF, after 1QF, 2QF, 3QF combined floodgate charge circuit 1Tcd1,2Tcd2,3Tcd have charged, time delay tH1, tH2tH3 start a closing pulse to 1QF, 2QF, 3QF closing circuit.
(2) if power supply dead electricity caused by the 3rd main transformer protection action, because protection action locking has adopted blocking, 1QF, 2QF combined floodgate charge circuit can not be discharged and be blocked, therefore 1QF, 2QF still can move combined floodgate.And the electric discharge immediately due to the 3rd main transformer protection action of 3QF charge circuit, 3QF closing circuit is blocked simultaneously, therefore 3QF can not close a floodgate.
(3) if power supply dead electricity cause because of the 4th circuit breaker 4QF jump, 4TWJ can be closed, and 4KKJ is still state after closing a floodgate, same the 4th circuit breaker 4QF position that produces is not corresponding, on inspection the first main transformer with no pressure after after 1QF combined floodgate charge circuit 1Tcd1 has charged, time delay tH1 start a closing pulse to 1QF closing circuit; On inspection the 3rd main transformer with no pressure after after 2QF combined floodgate charge circuit 2Tcd2 has charged, time delay tH2 start a closing pulse to 2QF closing circuit; On inspection the 3rd main transformer with no pressure after after 3QF combined floodgate charge circuit 3Tcd2 has charged, time delay tH3 start a closing pulse to 3QF closing circuit.
(4) if manually pull open 4QF, 4KKJ state after original combined floodgate becomes state after separating brake, the circuit breaker position of 4QF is not corresponding is false, therefore the closing circuit that can not start, 1Tcd1,2Tcd2,2Tcd2 charge circuit discharge simultaneously, also can not start the closing circuit of 1QF, 2QF, 3QF.
10, signal circuit
10.1 each tripping operation are sent out prepared auto restart actuating signal after exporting with combined floodgate immediately;
10.2 after main transformer protection action, when locking prepared auto restart closing circuit, send out main transformer protection action locking prepared auto restart switching signal;
10.3 systems do not occur extremely, prepared auto restart normal operation, and voltage or current circuit occur abnormal, and backup auto-activating device abnormal signal is sent out in time delay.

Claims (1)

1. one kind expands the microcomputer control standby power method of input automatically of internal bridge, it in main electrical scheme of electric substation of applied transmission and distribution networks, is standard expansion internal bridge mode, include two-way power supply, on two-way power supply, be serially connected with respectively four circuit breakers, i.e. the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF; Between each circuit breaker, also connect respectively three main transformers, i.e. the first main transformer, the second main transformer and the 3rd main transformer; This mode of connection comprises two-way electric power incoming line, three step-down main transformers, four circuit breakers, and wherein two circuit breakers are electric power incoming line circuit breaker, another two circuit breakers are bridge circuit breaker; The line side of electric power incoming line and high voltage side of transformer or low-pressure side are all connected to voltage transformer; It is characterized in that: its control method comprises following control procedure:
The tripping operation control of control procedure A. the first circuit breaker 1QF,
Be less than trip inspection definite value with no pressure, the 4th circuit breaker 4QF supply voltage 2U1 and be greater than trip inspection and have compression set value and 1QF manually to control the two-position relay 1KKJ of circuit breaker 1KK or its deciliter state when these conditions of position meet after closing a floodgate simultaneously when the first circuit breaker 1QF source current 1I1 is less than trip inspection no flow setpoint, 1QF supply voltage 1U1, through certain time delay tT1, to the first circuit breaker 1QF tripping operation control loop output pulse control signal, make the first circuit breaker 1QF tripping operation, export in-put of spare power supply tripping operation actuating signal simultaneously;
The tripping operation control of control procedure B. the 4th circuit breaker 4QF
Be less than trip inspection definite value with no pressure, the first circuit breaker 1QF supply voltage 1U1 and be greater than trip inspection and have compression set value and 4QF manually to control the two-position relay 4KKJ of circuit breaker 4KK or its deciliter state when these conditions of position meet after closing a floodgate simultaneously when the 4th circuit breaker 4QF source current 4I1 is less than trip inspection no flow setpoint, 4QF supply voltage 2U1, through certain time delay tT4, to the 4th circuit breaker 4QF tripping operation control loop output pulse control signal, make the 4th circuit breaker 4QF tripping operation, export in-put of spare power supply tripping operation actuating signal simultaneously;
Control procedure C. the first circuit breaker 1QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when two-position relay 1KKJ position after closing a floodgate of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(2) when two-position relay 4KKJ position after separating brake of hand control switch 4KK or its deciliter state of the 4th circuit breaker 4QF;
(3) when the first main transformer protection 1BCJ action;
(4) when the first circuit breaker 1QF sends combined floodgate control command;
Condition b. charge condition one
(1) when two-position relay 4KKJ position after closing a floodgate of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(2) when two-position relay 1KKJ position after separating brake of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(3) when the open position relay 1TWJ of the first circuit breaker 1QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes the charging of closing a floodgate and controls after charging time delay;
Condition c. discharging condition two
(1) when two-position relay 1KKJ position after closing a floodgate of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(2) when two-position relay 2KKJ position after separating brake of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(3) when the first main transformer protection 1BCJ action;
(4) when the first circuit breaker 1QF sends combined floodgate control command;
Condition d. charge condition two
(1) when two-position relay 2KKJ position after closing a floodgate of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(2) when two-position relay 1KKJ position after separating brake of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(3) when the open position relay 1TWJ of the first circuit breaker 1QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes the charging of closing a floodgate and controls after charging time delay;
Condition e. discharging condition three
(1) when two-position relay 1KKJ position after closing a floodgate of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(1) when two-position relay 3KKJ position after separating brake of hand control switch 3KK or its deciliter state of the 3rd circuit breaker 3QF;
(3) when the first main transformer protection 1BCJ action;
(4) when the first circuit breaker 1QF sends combined floodgate control command;
Condition f. charge condition three
(1) when two-position relay 3KKJ position after closing a floodgate of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(2) when two-position relay 1KKJ position after separating brake of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(3) when the open position relay 1TWJ of the first circuit breaker 1QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes the charging of closing a floodgate and controls after charging time delay;
Control procedure D. the first circuit breaker 1QF closes a floodgate and controls
Condition a. the first circuit breaker 1QF combined floodgate controlled condition one:
(1) when the really tripping of 4QF circuit breaker has been sent and checked to the 4th circuit breaker 4QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate when the first main transformer high side voltage, simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state after closing a floodgate position and the 4th circuit breaker 4QF in open position;
(2) 1Tcd1 charging delay time arrives;
(3) first main transformer protections do not move;
In the time that above condition meets, after time delay, export pulse control signal to the first circuit breaker 1QF combined floodgate control loop, the first circuit breaker 1QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Condition b. the first circuit breaker 1QF combined floodgate controlled condition two:
(1) when the first main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate, simultaneously the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state after closing a floodgate position and the second circuit breaker 2QF in open position;
(2) 1Tcd2 charging delay time arrives;
(3) first main transformer protections do not move;
In the time that above condition all meets, after time delay, export equally pulse control signal to the first circuit breaker 1QF combined floodgate control loop, the first circuit breaker 1QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Condition c. the first circuit breaker 1QF combined floodgate controlled condition three:
(1) when the first main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate, simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state after closing a floodgate position and the 3rd circuit breaker 3QF in open position;
(2) 1Tcd3 charging delay time arrives;
(3) first main transformer protections do not move;
In the time that above condition all meets, after time delay, export equally pulse control signal to the first circuit breaker 1QF combined floodgate control loop, the first circuit breaker 1QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Control procedure E. the second circuit breaker 2QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when two-position relay 2KKJ position after closing a floodgate of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(2) when two-position relay 1KKJ position after separating brake of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(3) when the first main transformer protection 1BCJ action;
(4) when the second circuit breaker 2QF sends combined floodgate control command;
Condition b. charge condition one
(1) when two-position relay 1KKJ position after closing a floodgate of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(2) when two-position relay 2KKJ position after separating brake of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(3) when the open position relay 2TWJ of the second circuit breaker 2QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the second circuit breaker 2QF completes the charging of closing a floodgate and controls after charging time delay;
Condition c. discharging condition two
(1) when two-position relay 2KKJ position after closing a floodgate of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the second main transformer protection 2BCJ action;
(4) when the second circuit breaker 2QF sends combined floodgate control command;
Condition d. charge condition two
(1) when two-position relay 4KKJ position after closing a floodgate of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(2) when two-position relay 2KKJ position after separating brake of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(3) when the open position relay 2TWJ of the second circuit breaker 2QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the second circuit breaker 2QF completes the charging of closing a floodgate and controls after charging time delay;
Condition c. discharging condition three
(1) when two-position relay 2KKJ position after closing a floodgate of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the second main transformer protection 2BCJ action;
(4) when the second circuit breaker 2QF sends combined floodgate control command;
Condition e. charge condition three
(1) when two-position relay 3KKJ position after closing a floodgate of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(2) when two-position relay 2KKJ position after separating brake of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(3) when the open position relay 2TWJ of the second circuit breaker 2QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the second circuit breaker 2QF completes the charging of closing a floodgate and controls after charging time delay;
Control procedure F. the second circuit breaker 2QF closes a floodgate and controls
Condition a. the second circuit breaker 2QF combined floodgate controlled condition one:
(1) when really tripping of the first circuit breaker 1QF has been sent and checked to the first circuit breaker 1QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate when the first main transformer high side voltage, simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state after closing a floodgate position and the first circuit breaker 1QF in open position;
(2) 2Tcd1 charging delay time arrives;
(3) first main transformer protections do not move;
In the time that above condition meets, after time delay, export pulse control signal to the second circuit breaker 2QF combined floodgate control loop, the second circuit breaker 2QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Condition b. the second circuit breaker 2QF combined floodgate controlled condition two:
(1) when the really tripping of 4QF circuit breaker has been sent and checked to the 4th circuit breaker 4QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate when the 3rd main transformer high side voltage, simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state after closing a floodgate position and the 4th circuit breaker 4QF in open position;
(2) 2Tcd2 charging delay time arrives;
(3) second main transformer protections do not move;
In the time that above condition all meets, after time delay, export equally pulse control signal to the second circuit breaker 2QF combined floodgate control loop, the second circuit breaker 2QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Condition c. the second circuit breaker 2QF combined floodgate controlled condition three:
(1) when the second main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate, simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state after closing a floodgate position and the 3rd circuit breaker 3QF in open position;
(2) 2Tcd3 charging delay time arrives;
(3) second main transformer protections do not move;
In the time that above condition all meets, after time delay, export equally pulse control signal to the second circuit breaker 2QF combined floodgate control loop, the second circuit breaker 2QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Control procedure G. the 3rd circuit breaker 3QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when two-position relay 3KKJ position after closing a floodgate of hand control switch 3KK or its deciliter state of the 3rd circuit breaker 3QF;
(2) when two-position relay 1KKJ position after separating brake of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(3) when the second main transformer protection 2BCJ action;
(4) when the 3rd circuit breaker 3QF sends combined floodgate control command;
Condition b. charge condition one
(1) when two-position relay 1KKJ position after closing a floodgate of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the open position relay 3TWJ of the 3rd circuit breaker 3QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 3rd circuit breaker 3QF completes the charging of closing a floodgate and controls after charging time delay;
Condition c. discharging condition two
(1) when two-position relay 3KKJ position after closing a floodgate of hand control switch 3KK or its deciliter state of the 3rd circuit breaker 3QF;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the 3rd main transformer protection 3BCJ action;
(4) when the 3rd circuit breaker 3QF sends combined floodgate control command;
Condition d. charge condition two
(1) when two-position relay 4KKJ position after closing a floodgate of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the open position relay 3TWJ of the 3rd circuit breaker 3QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 3rd circuit breaker 3QF completes the charging of closing a floodgate and controls after charging time delay;
Condition e. discharging condition three
(1) when two-position relay 2KKJ position after closing a floodgate of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the second main transformer protection 2BCJ action;
(4) when the 3rd circuit breaker 3QF sends combined floodgate control command
Condition f. charge condition three
(1) when two-position relay 2KKJ position after closing a floodgate of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(2) when two-position relay 3KKJ position after separating brake of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(3) when the open position relay 3TWJ of the 3rd circuit breaker 3QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 3rd circuit breaker 3QF completes the charging of closing a floodgate and controls after charging time delay;
Control procedure H. the 3rd circuit breaker 3QF closes a floodgate and controls
Condition a. the 3rd circuit breaker 3QF combined floodgate controlled condition one:
(1) when really tripping of the first circuit breaker 1QF has been sent and checked to the first circuit breaker 1QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate when the first main transformer high side voltage, simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state after closing a floodgate position and the first circuit breaker 1QF in open position;
(2) 3Tcd1 charging delay time arrives;
(3) second main transformer protections do not move;
In the time that above condition meets, after time delay, export pulse control signal to the three circuit breaker 3QF combined floodgate control loops, the 3rd circuit breaker 3Q closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Condition b. the 3rd circuit breaker 3QF combined floodgate controlled condition two:
The really tripping of 4QF circuit breaker has been sent and checked to (1) the 4th circuit breaker 4QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate when the 3rd main transformer high side voltage, simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state after closing a floodgate position and the 4th circuit breaker 4QF in open position;
(2) 3Tcd2 charging delay time arrives;
(3) the 3rd main transformer protections do not move;
In the time that above condition all meets, after time delay, export equally pulse control signal to the three circuit breaker 3QF combined floodgate control loops, the 3rd circuit breaker 3QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Condition c. the 3rd circuit breaker 3QF combined floodgate controlled condition three:
(1) when the second main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate, simultaneously the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state after closing a floodgate position and the second circuit breaker 2QF in open position;
(2) 3Tcd3 charging delay time arrives;
(3) second main transformer protections do not move;
In the time that above condition all meets, after time delay, export equally pulse control signal to the three circuit breaker 3QF combined floodgate control loops, the 3rd circuit breaker 3QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Control procedure I. the 4th circuit breaker 4QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when two-position relay 4KKJ position after closing a floodgate of hand control switch 4KK or its deciliter state of the 4th circuit breaker 4QF;
(2) when two-position relay 1KKJ position after separating brake of hand control switch 1KK or its deciliter state of the first circuit breaker 1QF;
(3) when the 3rd main transformer protection 3BCJ action;
(4) when the 4th circuit breaker 4QF sends combined floodgate control command;
Condition b. charge condition one
(1) when two-position relay 1KKJ position after closing a floodgate of the first circuit breaker 1QF hand control switch 1KK or its deciliter state;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the open position relay 4TWJ of the 4th circuit breaker 4QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes the charging of closing a floodgate and controls after charging time delay;
Condition c. discharging condition two
(1) when two-position relay 4KKJ position after closing a floodgate of hand control switch 4KK or its deciliter state of the 4th circuit breaker 4QF;
(1) when two-position relay 2KKJ position after separating brake of hand control switch 2KK or its deciliter state of the second circuit breaker 2QF;
(3) when the 3rd main transformer protection 3BCJ action;
(4) when the 4th circuit breaker 4QF sends combined floodgate control command;
Condition d. charge condition two
(1) when two-position relay 2KKJ position after closing a floodgate of the second circuit breaker 2QF hand control switch 2KK or its deciliter state;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the open position relay 4TWJ of the 4th circuit breaker 4QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes the charging of closing a floodgate and controls after charging time delay;
Condition e. discharging condition three
(1) when two-position relay 4KKJ position after closing a floodgate of hand control switch 4KK or its deciliter state of the 4th circuit breaker 4QF;
(1) when two-position relay 3KKJ position after separating brake of hand control switch 3KK or its deciliter state of the 3rd circuit breaker 3QF;
(3) when the 3rd main transformer protection 3BCJ action;
(4) when the 4th circuit breaker 4QF sends combined floodgate control command;
Condition f. charge condition three
(1) when two-position relay 3KKJ position after closing a floodgate of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state;
(2) when two-position relay 4KKJ position after separating brake of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state;
(3) when the open position relay 4TWJ of the 4th circuit breaker 4QF action;
In the time that above-mentioned arbitrary charge condition is satisfied and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes the charging of closing a floodgate and controls after charging time delay;
Control procedure J. the 4th circuit breaker 4QF closes a floodgate and controls
Condition a. the 4th circuit breaker 4QF combined floodgate controlled condition one:
(1) when really tripping of the first circuit breaker 1QF has been sent and checked to the first circuit breaker 1QF tripping operation control command; Or be less than the inspection definite value with no pressure of closing a floodgate when the 3rd main transformer high side voltage, simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state after closing a floodgate position and the first circuit breaker 1QF in open position;
(2) 4Tcd1 charging delay time arrives;
(3) the 3rd main transformer protections do not move;
In the time that above condition meets, after time delay, export pulse control signal to the four circuit breaker 4QF combined floodgate control loops, the 4th circuit breaker 4QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Condition b. the 4th circuit breaker 4QF combined floodgate controlled condition two:
(1) when the 3rd main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate, simultaneously the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state after closing a floodgate position and the second circuit breaker 2QF in open position;
(2) 4Tcd2 charging delay time arrives;
(3) the 3rd main transformer protections do not move;
In the time that above condition all meets, after time delay, export equally pulse control signal to the four circuit breaker 4QF combined floodgate control loops, the 4th circuit breaker 4QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
Condition c. the 4th circuit breaker 4QF combined floodgate controlled condition three:
(1) when the 3rd main transformer high side voltage is less than the inspection definite value with no pressure of closing a floodgate, simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state after closing a floodgate position and the 3rd circuit breaker 3QF in open position;
(2) 4Tcd3 charging delay time arrives;
(3) the 3rd main transformer protections do not move;
In the time that above condition all meets, after time delay, export equally pulse control signal to the four circuit breaker 4QF combined floodgate control loops, the 4th circuit breaker 4QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;
The control of control procedure K. abnormal signal
(1) when the first main transformer high-pressure side or low-pressure side voltage are less than the inspection definite value with no pressure of closing a floodgate, or second main transformer high-pressure side or low-pressure side voltage be less than the inspection definite value with no pressure of closing a floodgate, or the 3rd main transformer high-pressure side or low-pressure side voltage be less than the inspection definite value with no pressure of closing a floodgate, after certain time-delay, send abnormal signal;
(2) when the first circuit breaker 1QF does not send tripping operation control command, be less than two-position relay 1KKJ that trip inspection definite value with no pressure and the first circuit breaker 1QF manually control circuit breaker 1KK or its deciliter state when position, after certain time-delay, send abnormal signal after closing a floodgate and the first circuit breaker 1QF source current 1I1 is less than trip inspection no flow setpoint or the first circuit breaker 1QF supply voltage 1U1;
(3) when the 4th circuit breaker 4QF does not send tripping operation control command, be less than two-position relay 4KKJ that trip inspection definite value with no pressure and 4QF manually control circuit breaker 4KK or its deciliter state when position, after certain time-delay, send abnormal signal after closing a floodgate and the 4th circuit breaker 4QF source current 4I1 is less than trip inspection no flow setpoint or the 4th circuit breaker 4QF supply voltage 2U1.
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CN103219793B (en) * 2013-04-25 2015-04-08 国家电网公司 Decoupling control method of multifunctional microprocessor control backup power automatic switch
CN103219794B (en) * 2013-04-25 2014-11-26 国家电网公司 Decoupling control method of multifunctional microprocessor control backup power automatic switch

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CN101425685A (en) * 2008-08-15 2009-05-06 国电南瑞科技股份有限公司 Internal bridge connecting and protection implementing method for linkage standby electricity supply mode
CN101436787A (en) * 2008-12-23 2009-05-20 江苏省电力公司镇江供电公司 Method for automatically devoting microcomputer control standby power for enlarging inner bridge wire splice

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Publication number Priority date Publication date Assignee Title
CN1812226A (en) * 2005-01-25 2006-08-02 辽宁省电力有限公司辽阳供电公司 Adaptive master variable, parent connection and connecting line stand-by dispensing device and realizing method
CN101425685A (en) * 2008-08-15 2009-05-06 国电南瑞科技股份有限公司 Internal bridge connecting and protection implementing method for linkage standby electricity supply mode
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