CN102403783A - 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 PDFInfo
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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
Technical field
The invention belongs to the control technology of power transmission and distribution network, relate to a kind of method that drops into automatically with microcomputer control standby power.
Background technology
What at present, the automatic throw-in equipment of emergency power supply of electric substation's operation was common has main electrical scheme of electric substation for enlarging the automatic throw-in equipment of emergency power supply of internal bridge, internal bridge, single-trunk segmental wiring and single bus scheme.Though and main electrical scheme of electric substation was produced for the manufactory of the automatic throw-in equipment of emergency power supply prepared auto restart that enlarges internal bridge; Control method that this automatic throw-in equipment of emergency power supply adopted and basic principle are the operational modes by prior setting; And setting process is accomplished under this operational mode, operational mode also fails to contain fully the internal bridge whole service mode that enlarges.Though proposed the scheme of a fairly perfect internal bridge during patent of invention CN101436787 " enlarges the method that the microcomputer control standby power of internal bridge drops into automatically ", the present invention will propose to adopt another logical circuit to accomplish and adapt to the technical scheme of main electrical scheme of electric substation of applied transmission and distribution networks for expansion internal bridge automatic throw-in equipment of emergency power supply.
Summary of the invention
Problem to be solved by this invention is; It is the automatic throw-in equipment of emergency power supply of main electrical scheme of 220kV and following electric pressure electric substation for the expansion 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 automatic method that drops into of microcomputer control standby power of the expansion internal bridge of the basic principle of input automatically fully.
Provide the technical scheme of the inventive method below.
In main electrical scheme of electric substation of the applied transmission and distribution networks of method of the present invention, enlarge the internal bridge mode for standard; Include the two-way power supply; Be serially connected with four circuit breakers on the two-way power supply respectively, i.e. the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF; Also connect three main transformers between each circuit breaker respectively, i.e. first main transformer, second main transformer and the 3rd main transformer; Promptly 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 the electric power incoming line circuit breaker, two circuit breakers are the bridge circuit breaker in addition; The line side of electric power incoming line and transformer high-voltage side or low-pressure side all are connected to voltage transformer; Its control method comprises following control procedure:
The tripping operation control of the control procedure A. first circuit breaker 1QF, promptly
When the first circuit breaker 1QF source current 1I1 does not have stream definite value, 1QF supply voltage 1U1 and has compression set value and 1QF manually to control circuit breaker 1KK or its deciliter state less than the no compression set value of separating brake inspection, the 4th circuit breaker 4QF supply voltage 2U1 greater than the separating brake inspection less than separating brake inspection two-position relay 1KKJ be in close a floodgate after these several conditions of position when satisfying simultaneously; Through certain delay tT1; To first circuit breaker 1QF tripping operation control loop output pulse control signal; Make first circuit breaker 1QF tripping operation, export stand-by power supply input tripping operation actuating signal simultaneously.
The tripping operation control of control procedure B. the 4th circuit breaker 4QF
When the 4th circuit breaker 4QF source current 4I1 does not have stream definite value, 4QF supply voltage 2U1 and has compression set value and 4QF manually to control circuit breaker 4KK or its deciliter state less than the no compression set value of separating brake inspection, the first circuit breaker 1QF supply voltage 1U1 greater than the separating brake inspection less than separating brake inspection two-position relay 4KKJ be in close a floodgate after these several conditions of position when satisfying simultaneously; Through certain 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 stand-by power supply input tripping operation actuating signal simultaneously.
The control procedure C. first circuit breaker 1QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 4KKJ of the hand control switch 4KK of the 4th circuit breaker 4QF or its deciliter state is in separating brake;
(3) when first main transformer protection 1BCJ action;
(4) send the combined floodgate control command as the first circuit breaker 1QF;
Condition b. charge condition one
(1) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 1TWJ of first circuit breaker 1QF action.
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the first circuit breaker 1QF circuit breaker is accomplished the charging control of closing a floodgate through charging time-delay (delay time is 1Tcd1, can be made as 20 seconds) back.
Condition c. discharging condition two
(1) when the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state is in separating brake;
(3) when first main transformer protection 1BCJ action;
(4) send the combined floodgate control command as the first circuit breaker 1QF;
Condition d. charge condition two
(1) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 1TWJ of first circuit breaker 1QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the first circuit breaker 1QF circuit breaker is accomplished the charging control of closing a floodgate through charging time-delay (delay time is 1Tcd2, can be made as 20 seconds) back.
Condition e. discharging condition three
(1) when the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state be in close a floodgate after the position;
(1) position after the two-position relay 3KKJ of the hand control switch 3KK of the 3rd circuit breaker 3QF or its deciliter state is in separating brake;
(3) when first main transformer protection 1BCJ action;
(4) send the combined floodgate control command as the first circuit breaker 1QF;
Condition f. charge condition three
(1) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 1TWJ of first circuit breaker 1QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the first circuit breaker 1QF circuit breaker is accomplished the charging control of closing a floodgate through charging time-delay (delay time is 1Tcd3, can be made as 20 seconds) back.
The control procedure D. first circuit breaker 1QF control of closing a floodgate
The condition a. first circuit breaker 1QF breaker closing controlled condition one:
(1) sent and checked the really tripping of 4QF circuit breaker when the 4th circuit breaker 4QF tripping operation control command; Or when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in and closes a floodgate simultaneously and the 4th circuit breaker 4QF is in separating brake position (being that the 4QF circuit breaker position is not corresponding);
(2) 1Tcd1 charging delay time arrives;
(3) first main transformer protections are action not;
When above condition satisfies, 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 stand-by power supply simultaneously and drops into the feed motion signal.
The condition b. first circuit breaker 1QF combined floodgate controlled condition two:
(1) when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in and closes a floodgate simultaneously and the second circuit breaker 2QF is in separating brake position (being that the 2QF circuit breaker position is not corresponding);
(2) 1Tcd2 charging delay time arrives;
(3) first main transformer protections are action not;
When above condition all satisfies, after time-delay (delay time is tH1), export pulse control signal to the first circuit breaker 1QF combined floodgate control loop equally, the first circuit breaker 1QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal.
The condition c. first circuit breaker 1QF combined floodgate controlled condition three:
(1) when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in and closes a floodgate simultaneously and the 3rd circuit breaker 3QF is in separating brake position (being that the 3QF circuit breaker position is not corresponding);
(2) 1Tcd3 charging delay time arrives;
(3) first main transformer protections are action not;
When above condition all satisfies, after time-delay (delay time is tH1), export pulse control signal to the first circuit breaker 1QF combined floodgate control loop equally, the first circuit breaker 1QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal.
The control procedure E. second circuit breaker 2QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state is in separating brake;
(3) when first main transformer protection 1BCJ action;
(4) send the combined floodgate control command as the second circuit breaker 2QF;
Condition b. charge condition one
(1) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 2TWJ of second circuit breaker 2QF action.
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the second circuit breaker 2QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 2Tcd1, can be made as 20 seconds) back.
Condition c. discharging condition two
(1) when the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in separating brake;
(3) when second main transformer protection 2BCJ action;
(4) send the combined floodgate control command as the second circuit breaker 2QF;
Condition d. charge condition two
(1) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 2TWJ of second circuit breaker 2QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the second circuit breaker 2QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 2Tcd2, can be made as 20 seconds) back.
Condition c. discharging condition three
(1) when the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when second main transformer protection 2BCJ action;
(4) send the combined floodgate control command as the second circuit breaker 2QF;
Condition e. charge condition three
(1) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 2TWJ of second circuit breaker 2QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the second circuit breaker 2QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 2Tcd3, can be made as 20 seconds) back.
The control procedure F. second circuit breaker 2QF control of closing a floodgate
The condition a. second circuit breaker 2QF combined floodgate controlled condition one:
(1) sent and checked really tripping of the first circuit breaker 1QF when the first circuit breaker 1QF circuit breaker trip control command; Or when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in and closes a floodgate simultaneously and the first circuit breaker 1QF is in separating brake position (being that the 1QF circuit breaker position is not corresponding);
(2) 2Tcd1 charging delay time arrives;
(3) first main transformer protections are action not;
When above condition satisfies, 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 stand-by power supply simultaneously and drops into the feed motion signal.
The condition b. second circuit breaker 2QF combined floodgate controlled condition two:
(1) sent and checked the really tripping of 4QF circuit breaker when the 4th circuit breaker 4QF tripping operation control command; Or when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in and closes a floodgate simultaneously and the 4th circuit breaker 4QF is in separating brake position (being that the 4QF circuit breaker position is not corresponding);
(2) 2Tcd2 charging delay time arrives;
(3) second main transformer protections are action not;
When above condition all satisfies, after time-delay (delay time is tH2), export pulse control signal to the second circuit breaker 2QF combined floodgate control loop equally, the second circuit breaker 2QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal.
The condition c. second circuit breaker 2QF combined floodgate controlled condition three:
(1) when the second main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in and closes a floodgate simultaneously and the 3rd circuit breaker 3QF is in separating brake position (being that the 3QF circuit breaker position is not corresponding);
(4) 2Tcd3 charging delay time arrives;
(5) second main transformer protections are action not;
When above condition all satisfies, after time-delay (delay time is tH2), export pulse control signal to the second circuit breaker 2QF combined floodgate control loop equally, the second circuit breaker 2QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal.
Control procedure G. the 3rd circuit breaker 3QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when the two-position relay 3KKJ of the hand control switch 3KK of the 3rd circuit breaker 3QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state is in separating brake;
(3) when second main transformer protection 2BCJ action;
(4) send the combined floodgate control command as the 3rd circuit breaker 3QF;
Condition b. charge condition one
(1) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 3TWJ of the 3rd circuit breaker 3QF action.
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 3rd circuit breaker 3QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 3Tcd1, can be made as 20 seconds) back.
Condition c. discharging condition two
(1) when the two-position relay 3KKJ of the hand control switch 3KK of the 3rd circuit breaker 3QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 2KK or its deciliter state is in separating brake;
(3) when the 3rd main transformer protection 3BCJ action;
(4) send the combined floodgate control command as the 3rd circuit breaker 3QF;
Condition d. charge condition two
(1) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 3TWJ of the 3rd circuit breaker 3QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 3rd circuit breaker 3QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 3Tcd2, can be made as 20 seconds) back.
Condition e. discharging condition three
(1) when the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when second main transformer protection 2BCJ action;
(4) send the combined floodgate control command as the 3rd circuit breaker 3QF
Condition f. charge condition three
(1) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 3TWJ of the 3rd circuit breaker 3QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 3rd circuit breaker 3QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 3Tcd3, can be made as 20 seconds) back
Control procedure H. the 3rd circuit breaker 3QF control of closing a floodgate
Condition a. the 3rd circuit breaker 3QF combined floodgate controlled condition one:
(1) sent and checked really tripping of the first circuit breaker 1QF when first circuit breaker 1QF tripping operation control command; Or when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in and closes a floodgate simultaneously and the first circuit breaker 1QF is in separating brake position (being that the 1QF circuit breaker position is not corresponding);
(2) 3Tcd1 charging delay time arrives;
(3) second main transformer protections are action not;
When above condition satisfies, 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 stand-by power supply simultaneously and drops into the feed motion signal.
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 when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in and closes a floodgate simultaneously and the 4th circuit breaker 4QF is in separating brake position (being that the 4QF circuit breaker position is not corresponding);
(2) 3Tcd2 charging delay time arrives;
(3) the 3rd main transformer protections are action not;
When above condition all satisfies, after time-delay (delay time is tH3), export pulse control signal to the three circuit breaker 3QF combined floodgate control loops equally, the 3rd circuit breaker 3QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal.
Condition c. the 3rd circuit breaker 3QF combined floodgate controlled condition three:
(1) when the second main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in and closes a floodgate simultaneously and the second circuit breaker 2QF is in separating brake position (being that the 2QF circuit breaker position is not corresponding);
(2) 3Tcd3 charging delay time arrives;
(3) second main transformer protections are action not;
When above condition all satisfies, after time-delay (delay time is tH3), export pulse control signal to the three circuit breaker 3QF combined floodgate control loops equally, the 3rd circuit breaker 3QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal.
Control procedure I. the 4th circuit breaker 4QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when the two-position relay 4KKJ of the hand control switch 1KK of the 4th circuit breaker 4QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 1KKJ of the hand control switch 4KK of the first circuit breaker 1QF or its deciliter state is in separating brake;
(3) when the 3rd main transformer protection 3BCJ action;
(4) send the combined floodgate control command as the 4th circuit breaker 4QF;
Condition b. charge condition one
(1) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 1KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 4TWJ of the 4th circuit breaker 4QF action.
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 4th circuit breaker 4QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 4Tcd1, can be made as 20 seconds) back.
Condition c. discharging condition two
(1) when the two-position relay 4KKJ of the hand control switch 4KK of the 4th circuit breaker 4QF or its deciliter state be in close a floodgate after the position;
(1) position after the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state is in separating brake;
(3) when the 3rd main transformer protection 3BCJ action;
(4) send the combined floodgate control command as the 4th circuit breaker 4QF;
Condition d. charge condition two
(1) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 4TWJ of the 4th circuit breaker 4QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 4th circuit breaker 4QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 4Tcd2, can be made as 20 seconds) back.
Condition e. discharging condition three
(1) when the two-position relay 4KKJ of the hand control switch 4KK of the 4th circuit breaker 4QF or its deciliter state be in close a floodgate after the position;
(1) position after the two-position relay 3KKJ of the hand control switch 3KK of the 3rd circuit breaker 3QF or its deciliter state is in separating brake;
(3) when the 3rd main transformer protection 3BCJ action;
(4) send the combined floodgate control command as the 4th circuit breaker 4QF;
Condition f. charge condition three
(1) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 4TWJ of the 4th circuit breaker 4QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 4th circuit breaker 4QF accomplishes the charging control of closing a floodgate through charging time-delay (delay time is 4Tcd3, can be made as 20 seconds) back.
Control procedure J. the 4th circuit breaker 4QF control of closing a floodgate
Condition a. the 4th circuit breaker 4QF combined floodgate controlled condition one:
(1) sent and checked really tripping of the first circuit breaker 1QF when first circuit breaker 1QF tripping operation control command; Or when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in and closes a floodgate simultaneously and the first circuit breaker 1QF is in separating brake position (being that the 1QF circuit breaker position is not corresponding);
(2) 4Tcd1 charging delay time arrives;
(3) the 3rd main transformer protections are action not;
When above condition satisfies, 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 stand-by power supply simultaneously and drops into the feed motion signal.
Condition b. the 4th circuit breaker 4QF combined floodgate controlled condition two:
(1) when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in and closes a floodgate simultaneously and the second circuit breaker 2QF is in separating brake position (being that the 2QF circuit breaker position is not corresponding);
(2) 4Tcd2 charging delay time arrives;
(3) the 3rd main transformer protections are action not;
When above condition all satisfies, after time-delay (delay time is tH4), export pulse control signal to the four circuit breaker 4QF combined floodgate control loops equally, the 4th circuit breaker 4QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal.
Condition c. the 4th circuit breaker 4QF combined floodgate controlled condition three:
(1) when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate (when the inspection of closing a floodgate does not have the sign of pressure KG2 and is 1), position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in and closes a floodgate simultaneously and the 3rd circuit breaker 3QF is in separating brake position (being that the 3QF circuit breaker position is not corresponding);
(2) 4Tcd3 charging delay time arrives;
(3) the 3rd main transformer protections are action not;
When above condition all satisfies, after time-delay (delay time is tH4), export pulse control signal to the four circuit breaker 4QF combined floodgate control loops equally, the 4th circuit breaker 4QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal.
The control of control procedure K. abnormal signal
(1) when the first main transformer high-pressure side or low-pressure side voltage less than the no compression set value of inspection of closing a floodgate (do not have press when indicating that KG2 is 1 in the inspection of closing a floodgate); Or second main transformer high-pressure side or low-pressure side voltage less than the no compression set value of inspection of closing a floodgate (do not have to press indicate that KG3 is at 1 o'clock in the inspection of closing a floodgate); Or the 3rd main transformer high-pressure side or low-pressure side voltage less than the no compression set value of inspection of closing a floodgate (inspection of closing a floodgate do not have to press indicate that KG2 is at 1 o'clock), after certain time-delay, send abnormal signal;
(2) do not send the tripping operation control command as the first circuit breaker 1QF; And the first circuit breaker 1QF source current 1I1 less than separating brake inspection do not have two-position relay 1KKJ that stream definite value or the first circuit breaker 1QF supply voltage 1U1 manually control circuit breaker 1KK or its deciliter state less than separating brake the no compression set value of inspection and the first circuit breaker 1QF be in close a floodgate after during the position, after certain time-delay, send abnormal signal;
(3) do not send the tripping operation control command as the 4th circuit breaker 4QF; And the 4th circuit breaker 4QF source current 4I1 less than separating brake inspection do not have two-position relay 4KKJ that stream definite value or the 4th circuit breaker 4QF supply voltage 2U1 manually control circuit breaker 4KK or its deciliter state less than separating brake the no compression set value of inspection and 4QF be in close a floodgate after during the position, after certain time-delay, send abnormal signal.
The method that microcomputer control standby power of the present invention drops into automatically meets the basic principle that stand-by power supply drops into automatically fully, compares with employed method in the existing microcomputer type automatic throw-in equipment of emergency power supply, has following advantage:
1. the main electrical scheme of 220kV and following electric substation that is applicable to transmission and distribution networks is for enlarging the technical scheme of internal bridge automatic throw-in equipment of emergency power supply.
2. adopted by the switch of power supply (or losing power supply) and accomplished the charging and discharging circuit controlling schemes, had when combined floodgate inspection nothing equally and press advantage easily;
3. adopt the not corresponding startup loop of similar reclosing equally; Start one of loop as prepared auto restart; Have clear and definite, simple, the reliable advantage of operating criterion, and can correct circuit breaker and steal jumping, the circuit breaker of need not setting up defences is in addition stolen the correction loop of jumping; Thereby solved each circuit breaker and stolen the jumping problem, particularly the bridge circuit breaker is stolen the jumping problem;
4. start the prepared auto restart closing circuit when having adopted the loop start power supply circuit breaker trip by inspection power supply dead electricity; Start two of loop as prepared auto restart; Can be used as not corresponding startup loop and start replenishing of loop, make the startup of prepared auto restart more reliable as prepared auto restart;
5. the no pressure scheme of inspection when having adopted combined floodgate (also can adopt the inspection scheme same period when closing a floodgate, only need go out to add that in this logic this function gets final product) has solved when the electric substation that moves and when local power plant is arranged, has prevented the problem of non-Switching Synchronization;
6. adopt any platform main transformer protection to move the scheme of the corresponding main transformer breaker closing of corresponding locking, prevented to cause full institute of this electric substation dead electricity.
Description of drawings
Fig. 1 is the expansion internal bridge sketch map that a suitable main electrical scheme of the automatic input of stand-by power supply is a standard;
Fig. 2 is the logic diagram of the inventive method.
Control word among Fig. 2 is explained as follows:
| The control word title | Control word is 1 o'clock | Control word is 0 o'clock |
| The separating brake inspection has pressure-controlled word KG1 | The separating brake inspection has the compression functions input | The separating brake inspection has compression functions to withdraw from |
| The no pressure-controlled word KG2 of inspection closes a floodgate | Close a floodgate and examine no compression functions input | The no compression functions of inspection that closes a floodgate withdraws from |
The letter explanation is as follows among Fig. 2:
＜1U1-representes the first circuit breaker 1QF supply voltage less than the no compression set value of separating brake inspection, and promptly 1QF does not have pressure;
＜2U1-representes the 4th circuit breaker 4QF supply voltage less than the no compression set value of separating brake inspection, and promptly 4QF does not have pressure;
＞1U1-representes that the first circuit breaker 1QF supply voltage has the compression set value greater than the separating brake inspection, and promptly 1QF has pressure;
＞2U1-representes that the 4th circuit breaker 4QF supply voltage has the compression set value greater than the separating brake inspection, and promptly 4QF has pressure;
＜1I1-representes that the first circuit breaker 1QF source current does not have the stream definite value less than the separating brake inspection, and promptly 1QF does not have stream;
＜4I1-representes that the 4th circuit breaker 4QF source current does not have the stream definite value less than the separating brake inspection, and promptly 4QF does not have stream;
＜1UT2-representes that the first main transformer high-pressure side or low-pressure side bus voltage are less than the no compression set value of inspection of closing a floodgate;
＜2UT2-representes that the second main transformer high-pressure side or low-pressure side bus voltage are less than the no compression set value of inspection of closing a floodgate;
＜3UT2-representes that the 3rd main transformer high-pressure side or low-pressure side bus voltage are less than the no compression set value of inspection of closing a floodgate;
1KKJ-representes that the two-position relay that 1QF manually controls circuit breaker 1KK or its deciliter state is in the position, back of closing a floodgate;
2KKJ-representes that the two-position relay that 2QF manually controls circuit breaker 2KK or its deciliter state is in the position, back of closing a floodgate;
3KKJ-representes that the two-position relay that 3QF manually controls circuit breaker 3KK or its deciliter state is in the position, back of closing a floodgate;
4KKJ-representes that the two-position relay that 4QF manually controls circuit breaker 4KK or its deciliter state is in the position, back of closing a floodgate;
1TWJ-representes that the first circuit breaker 1QF is in the separating brake position;
2TWJ-representes that the second circuit breaker 2QF is in the separating brake position;
3TWJ-representes that the 3rd circuit breaker 3QF is in the separating brake position;
4TWJ-representes that the 4th circuit breaker 4QF is in the separating brake position;
1BCJ-representes first main transformer depressor protection action;
2BCJ-representes second main transformer depressor protection action;
3BCJ-representes the 3rd main transformer depressor protection action;
1# becomes inspection does not have the pressures-expression first main transformer high-pressure side or low-pressure side voltage less than " the inspection nothing of closing a floodgate pressure " definite value, i.e. this transformer small power supply off-the-line that is incorporated into the power networks;
2# becomes inspection does not have the pressures-expression second main transformer high-pressure side or low-pressure side voltage less than " the inspection nothing of closing a floodgate pressure " definite value, i.e. this transformer small power supply off-the-line that is incorporated into the power networks;
3# becomes inspection does not have pressures-expression the 3rd main transformer high-pressure side or low-pressure side voltage less than " the inspection nothing of closing a floodgate pressure " definite value, i.e. this transformer small power supply off-the-line that is incorporated into the power networks;
Symbol description is following among Fig. 2:
-expression delay tripping time;
-expression charging delay time;
-expression second circuit breaker 2QF trip(ping) circuit;
-expression second circuit breaker 2QF closing circuit;
Embodiment
As shown in Figure 1; Include the two-way power supply in the applied transmission and distribution networks of method of the present invention; Be serially connected with the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF on the two-way power supply respectively; Also connect three main transformers (i.e. first main transformer, second main transformer and the 3rd main transformer) respectively, the line side of electric power incoming line and transformer high-voltage side or low-pressure side all are 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 the 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 a stand-by heat, after its corresponding operating breaker 4KK (or two-position relay 4KKJ) memory is separating brake.Because 1KK, 2KK, 3KK are the back state that closes a floodgate, so the 1QF trip(ping) circuit is open, and 1QF, 2QF, the locking of 3QF closing circuit; Open simultaneously 4QF combined floodgate charge circuit 4Tcd1,4Tcd2,4Tcd3 then charge when 4QF satisfies charge condition, and charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 1QF inspection do not have press and do not have stream, offside 4QF power supply pressure is arranged after, 1QF trips behind the tT1 that delays time.When first circuit breaker 1QF tripping operation control command has been sent the 1QF tripping operation and check the really tripping of 1QF circuit breaker; The closed expression of first circuit breaker 1QF tripping operation back 1TWJ 1QF is in trip position; And 1KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the first circuit breaker 1QF position, and after 4QF combined floodgate charge circuit 4Tcd1 charging was accomplished, time-delay tH4 started a closing pulse to the 4QF closing circuit.Or 4QF was the separating brake position originally, sent the back when first circuit breaker 1QF tripping operation control command and confirmed really tripping of 1QF (becoming the separating brake position), and after 4QF combined floodgate charge circuit 4Tcd1 charging was accomplished, closing pulse of time-delay tH4 startup was to the 4QF closing circuit.
(2) if the power supply dead electricity be cause by first main transformer protection action or the action of second main transformer protection cause; Because corresponding locking has been adopted in protection action locking; The 4th circuit breaker 4QF combined floodgate charge circuit can be by discharge with by locking; So 4QF still can move combined floodgate, can guarantee that like this electric substation's second main transformer, the 3rd main transformer or first main transformer, the 3rd main transformer still can move.
(3) if being moved by the 3rd main transformer protection, the 3rd main transformer dead electricity causes; Because corresponding locking has been adopted in protection action locking; The 4QF charge circuit is owing to protect action and discharge immediately; Simultaneously the 4QF closing circuit is by locking, thus 4QF can not close a floodgate, thereby guaranteed that electric substation's first main transformer, second main transformer still can move.
(4) if jumping because of the first circuit breaker 1QF steals, the power supply dead electricity causes; Then 1TWJ can be closed, and 1KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the first circuit breaker 1QF position equally; After the 3rd main transformer did not have pressure on inspection, time-delay tH4 started a closing pulse to the 4QF closing circuit.
(5) if steal jumping because of the 2QF circuit breaker, the power supply dead electricity causes; Then 2TWJ can be closed, and 2KKJ still is state after closing a floodgate, and it is not corresponding to produce the 2QF circuit breaker position equally; After the 3rd main transformer did not have pressure on inspection, time-delay tH4 started a closing pulse to the 4QF closing circuit.
(6) if steal jumping because of the 3QF circuit breaker, the power supply dead electricity causes; Then 3TWJ can be closed, and 3KKJ still is state after closing a floodgate, and it is not corresponding to produce the 3QF circuit breaker position equally; After the 3rd main transformer did not have pressure on inspection, time-delay tH4 started a closing pulse to the 4QF closing circuit.
(7) if manually draw back 1QF or 2QF or 3QF; Then 1KKJ or 2KKJ or 3KKJ become state behind the separating brake by original combined floodgate back state; The circuit breaker position of 1QF or 2QF or 3QF is not corresponding is false, and 4Tcd1,4Tcd2, the discharge of 4Tcd3 charge circuit simultaneously be not so can start the closing circuit of 4QF.
2, operational mode 2
2.1 the preparatory stage
Circuit breaker 1QF, 2QF, 4QF are the 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 a stand-by heat, after its corresponding operating breaker 3KK (or two-position relay 3KKJ) memory is separating brake.Because 1KK, 2KK, 4KK are the back state that closes a floodgate, so 1QF, 2QF, 4QF trip(ping) circuit are open, and the closing circuit locking; Open simultaneously 3QF combined floodgate charge circuit 3Tcd1,3Tcd2,3Tcd3 then charge when 3QF satisfies charge condition, and charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 1QF inspection do not have press and do not have stream, offside 4QF power supply pressure is arranged after, 1QF trips behind the tT1 that delays time.When first circuit breaker 1QF tripping operation control command has been sent the 1QF tripping operation and check really tripping of the first circuit breaker 1QF; The closed expression of 1QF tripping operation back 1TWJ 1QF is in trip position; And 1KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the first circuit breaker 1QF position, and after 3QF combined floodgate charge circuit 3Tcd1 charging was accomplished, time-delay tH3 started a closing pulse to the 3QF closing circuit.Or 3QF was the separating brake position originally, sent the back when first circuit breaker 1QF tripping operation control command and confirmed really tripping of 1QF (becoming the separating brake position), and after 3QF combined floodgate charge circuit 3Tcd1 charging was accomplished, closing pulse of time-delay tH3 startup was to the 3QF closing circuit.
(2) if being moved by first main transformer protection, the power supply dead electricity causes; Because corresponding locking has been adopted in protection action locking; 3QF combined floodgate charge circuit can be by discharge with by locking; So 3QF still can move combined floodgates (1QF and 2QF circuit breaker since tripping operation all to have produced circuit breaker position not corresponding, under together).Can guarantee that like this electric substation's second main transformer, the 3rd main transformer still can move.
(3) if jumping because of the first circuit breaker 1QF steals, the power supply dead electricity causes; Then 1TWJ can be closed, and 1KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the first circuit breaker 1QF position equally; After first main transformer did not have pressure on inspection, time-delay tH3 started a closing pulse to the 3QF closing circuit.
(4) if jumping because of the second circuit breaker 2QF steals, the power supply dead electricity causes; Then 2TWJ can be closed, and 2KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the second circuit breaker 2QF position equally; After second main transformer did not have pressure on inspection, time-delay tH3 started a closing pulse to the 3QF closing circuit.
(5) if the second main transformer dead electricity is caused that by second main transformer protection action because corresponding locking has been adopted in protection action locking, 3QF combined floodgate charge circuit can be by discharge with by locking, so 3QF still can not move combined floodgate.Can guarantee that like this electric substation's first main transformer, the 3rd main transformer still can move.
(6) if manually draw back 1QF, 2QF, then 1KKJ, 2KKJ become state behind the separating brake by original combined floodgates back state, and the circuit breaker position of 1QF, 2QF is not corresponding is false, and 3Tcd1,3Tcd3 charge circuit discharge simultaneously, so 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, through the 4QF inspection do not have press and do not have stream, offside 1QF power supply pressure is arranged after, 4QF trips behind the tT4 that delays time.When the 4th circuit breaker 4QF tripping operation control command has been sent the 4QF tripping operation and check the 4th circuit breaker 4QF tripping; The closed expression of 4QF tripping operation back 4TWJ 4QF is in trip position; And 4KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the 4th circuit breaker 4QF position, and after 3QF combined floodgate charge circuit 3Tcd2 charging was accomplished, time-delay tH3 started a closing pulse to the 3QF closing circuit.Or 3QF was the separating brake position originally, sent the back when the 4th circuit breaker 4QF tripping operation control command and confirmed really tripping of 4QF (becoming the separating brake position), and after 3QF combined floodgate charge circuit 3Tcd2 charging was accomplished, closing pulse of time-delay tH3 startup was to the 3QF closing circuit.
(2) if the power supply dead electricity is caused that by the 3rd main transformer protection action because corresponding locking has been adopted in protection action locking, 3QF combined floodgate charge circuit can be by discharge with by locking, so 3QF still can not move combined floodgate.Can guarantee that like this electric substation's first main transformer, second main transformer still can move.
(3) if jumping because of the 4th circuit breaker 4QF steals, the power supply dead electricity causes; Then 4TWJ can be closed, and 4KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the 4th circuit breaker 4QF position equally; After the 3rd main transformer did not have pressure on inspection, time-delay tH3 started a closing pulse to the 3QF closing circuit.
(4) if manually draw back 4QF, then 4KKJ becomes state behind the separating brake by original combined floodgates back state, and the circuit breaker position of 4QF is not corresponding is false, and the 4Tcd2 charge circuit discharges simultaneously, so can not start the closing circuit of 3QF.
3, operational mode 3
3.1 the preparatory stage
Circuit breaker 1QF, 3QF, 4QF are the 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 a stand-by heat, after its corresponding operating breaker 2KK (or two-position relay 2KKJ) memory is separating brake.Because 1KK, 3KK, 4KK are the back state that closes a floodgate, so 1QF, 3QF, 4QF trip(ping) circuit are open, and the closing circuit locking; Open simultaneously 2QF combined floodgate charge circuit 2Tcd1,2Tcd2,2Tcd3 then charge when 2QF satisfies charge condition, and charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 1QF inspection do not have press and do not have stream, offside 1QF power supply pressure is arranged after, 1QF trips behind the tT1 that delays time.When first circuit breaker 1QF tripping operation control command has been sent the 1QF tripping operation and check really tripping of the first circuit breaker 1QF; The closed expression of 1QF tripping operation back 1TWJ 1QF is in trip position; And 1KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the first circuit breaker 1QF position, and after 2QF combined floodgate charge circuit 2Tcd1 charging was accomplished, time-delay tH2 started a closing pulse to the 2QF closing circuit.Or 2QF was the separating brake position originally, sent the back when first circuit breaker 1QF tripping operation control command and confirmed really tripping of 1QF (becoming the separating brake position), and after 2QF combined floodgate charge circuit 2Tcd1 charging was accomplished, closing pulse of time-delay tH2 startup was to the 2QF closing circuit.
(2) if the power supply dead electricity is caused that by first main transformer protection action because corresponding locking has been adopted in protection action locking, 2QF combined floodgate charge circuit can be by discharge with by locking, so 2QF still can not move combined floodgate.Can guarantee that like this electric substation's second main transformer, the 3rd main transformer still can move.
(3) if jumping because of the first circuit breaker 1QF steals, the power supply dead electricity causes; Then 1TWJ can be closed, and 1KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the first circuit breaker 1QF position equally; After the first main transformer depressor did not have pressure on inspection, time-delay tH2 started a closing pulse to the 2QF closing circuit.
(4) if manually draw back 1QF, then 1KKJ becomes state behind the separating brake by original combined floodgates back state, and the circuit breaker position of 1QF is not corresponding is false, and the 2Tcd1 charge circuit discharges simultaneously, so 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, through the 4QF inspection do not have press and do not have stream, offside 1QF power supply pressure is arranged after, 4QF trips behind the tT4 that delays time.When the 4th circuit breaker 4QF tripping operation control command has been sent the 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF; The closed expression of 4QF tripping operation back 4TWJ 4QF is in trip position; And 4KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the 4th circuit breaker 4QF position, and after 2QF combined floodgate charge circuit 2Tcd2 charging was accomplished, time-delay tH2 started a closing pulse to the 2QF closing circuit.Or 2QF was the separating brake position originally, sent the back when the 4th circuit breaker 4QF tripping operation control command and confirmed really tripping of 4QF (becoming the separating brake position), and after 2QF combined floodgate charge circuit 2Tcd2 charging was accomplished, closing pulse of time-delay tH2 startup was to the 2QF closing circuit.
(2) if the power supply dead electricity is caused that by the 3rd main transformer protection action because corresponding locking has been adopted in protection action locking, 2QF combined floodgate charge circuit can be by discharge with by locking, so 2QF still can move combined floodgate.Can guarantee that like this electric substation's first main transformer, second main transformer still can move.
(3) if jumping because of the 4th circuit breaker 4QF steals, the power supply dead electricity causes; Then 4TWJ can be closed, and 4KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the 4th circuit breaker 4QF position equally; After the 3rd main transformer did not have pressure on inspection, time-delay tH3 started a closing pulse to the 3QF closing circuit.
(4) if jumping because of the 3rd circuit breaker 3QF steals, the power supply dead electricity causes; Then 3TWJ can be closed, and 3KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the 3rd circuit breaker 3QF position equally; After second main transformer did not have pressure on inspection, time-delay tH2 started a closing pulse to the 2QF closing circuit.
(5) if the second main transformer protection dead electricity is caused that by second main transformer protection action because corresponding locking has been adopted in protection action locking, 2QF combined floodgate charge circuit can be by discharge with by locking, so 2QF still can not move combined floodgate.Can guarantee that like this electric substation's first main transformer, the 3rd main transformer still can move.
(6) if manually draw back 3QF, 4QF, then 3KKJ, 4KKJ become state behind the separating brake by original combined floodgates back state, and the circuit breaker position of 3QF, 4QF is not corresponding is false, and 3Tcd3,3Tcd2 charge circuit discharge simultaneously, so can not start the closing circuit of 2QF.
4, operational mode 4
4.1 the preparatory stage
Circuit breaker 2QF, 3QF, 4QF are the 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 a stand-by heat, after its corresponding operating breaker 1KK (or two-position relay 1KKJ) memory is separating brake.Because 2KK, 3KK, 4KK are the back state that closes a floodgate, so the 4QF trip(ping) circuit is open, and 2QF, 3QF, the locking of 4QF closing circuit; Open simultaneously 1QF combined floodgate charge circuit 1Tcd1,1Tcd2,1Tcd3 then charge when 1QF satisfies charge condition, and charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 4QF inspection do not have press and do not have stream, offside 1QF power supply pressure is arranged after, 4QF trips behind the tT4 that delays time.When the 4th circuit breaker 4QF tripping operation control command has been sent the 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF; The closed expression of 4QF tripping operation back 4TWJ 4QF is in trip position; And 4KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the 4th circuit breaker 4QF position, and after 1QF combined floodgate charge circuit 1Tcd1 charging was accomplished, time-delay tH1 started a closing pulse to the 1QF closing circuit.Or 1QF was the separating brake position originally, sent the back when the 4th circuit breaker 4QF tripping operation control command and confirmed really tripping of 4QF (becoming the separating brake position), and after 1QF combined floodgate charge circuit 1Tcd1 charging was accomplished, closing pulse of time-delay tH1 startup was to the 1QF closing circuit.
(2) if being moved by the 3rd main transformer protection, the power supply dead electricity causes; Because corresponding locking has been adopted in protection action locking; 1QF combined floodgate charge circuit can so 1QF still can move combined floodgate, can not guarantee electric substation's first main transformer, second main transformer by discharge with by locking like this.
(3) if being moved by first main transformer protection, the first main transformer dead electricity causes; Because corresponding locking has been adopted in protection action locking; The 1QF charge circuit is owing to protect action and discharge immediately; Simultaneously the 1QF closing circuit is by locking, thus 1QF can not close a floodgate, thereby guaranteed that electric substation's second main transformer, the 3rd main transformer still can move.
(4) if being moved by second main transformer protection, the second main transformer dead electricity causes; Because corresponding locking has been adopted in protection action locking; 1QF combined floodgate charge circuit can be by discharge with by locking; So 1QF still can move combined floodgate, thereby has guaranteed that electric substation's first main transformer, the 3rd main transformer still can move.
(5) if jumping because of the 4th circuit breaker 4QF steals, the power supply dead electricity causes; Then 4TWJ can be closed, and 4KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the 4th circuit breaker 4QF position equally; After first main transformer did not have pressure on inspection, time-delay tH1 started a closing pulse to the 1QF closing circuit.
(6) if jumping because of the second circuit breaker 2QF steals, the power supply dead electricity causes; Then 2TWJ can be closed, and 2KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the second circuit breaker 2QF position equally; After first main transformer did not have pressure on inspection, time-delay tH1 started a closing pulse to the 1QF closing circuit.
(7) if jumping because of the 3rd circuit breaker 3QF steals, the power supply dead electricity causes; Then 3TWJ can be closed, and 3KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the 3rd circuit breaker 3QF position equally; After first main transformer did not have pressure on inspection, time-delay tH1 started a closing pulse to the 1QF closing circuit.
(8) if manually draw back 4QF or 2QF or 3QF; Then 4KKJ or 2KKJ or 3KKJ become state behind the separating brake by original combined floodgate back state; The circuit breaker position of 4QF or 2QF or 3QF is not corresponding is false, and 1Tcd1,1Tcd2, the discharge of 1Tcd3 charge circuit simultaneously be not so can start the closing circuit of 4QF.
5, operational mode 5
5.1 the preparatory stage
Circuit breaker 1QF, 2QF are the 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, and its corresponding operating breaker 3KK, 4KK (or two-position relay 3KKJ, 4KKJ) memory is for behind the separating brake.Because 1KK, 2KK are the back state that closes a floodgate, so the 1QF trip(ping) circuit is open, and 1QF, the locking of 2QF closing circuit; Open simultaneously 3QF, 4QF combined floodgate charge circuit 3Tcd1,3Tcd3 and 4Tcd1,4Tcd2, as 3QF, then charge when 4QF satisfies charge condition, charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 1QF inspection do not have press and do not have stream, offside 4QF power supply pressure is arranged after, 1QF trips behind the tT1 that delays time.When first circuit breaker 1QF tripping operation control command has been sent the 1QF tripping operation and check really tripping of the first circuit breaker 1QF; The closed expression of 1QF tripping operation back 1TWJ 1QF is in trip position; And 1KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the first circuit breaker 1QF position, and after 3QF combined floodgate charge circuit 3Tcd1 charging was accomplished, time-delay tH3 started a closing pulse to the 3QF closing circuit; After 4QF combined floodgate charge circuit 4Tcd1 charging was accomplished, time-delay tH4 started a closing pulse to the 4QF closing circuit simultaneously.Or 3QF, 4QF were the separating brake position originally;, first circuit breaker 1QF tripping operation control command confirms really tripping of 1QF (becoming the separating brake position) after sending; After 3QF, 4QF combined floodgate charge circuit 3Tcd1,4Tcd1 charging were accomplished, time-delay tH3, tH4 started a closing pulse to 3QF, 4QF closing circuit.
(2) if being moved by first main transformer protection, the power supply dead electricity causes; Because corresponding locking has been adopted in protection action locking; 3QF, 4QF charge circuit can not discharge, and after 3QF combined floodgate charge circuit 3Tcd1 charging was accomplished, time-delay tH3 started a closing pulse to the 3QF closing circuit; After 4QF combined floodgate charge circuit 4Tcd1 charging was accomplished, time-delay tH4 started a closing pulse to the 4QF closing circuit simultaneously.
(3) if stealing to jump because of the 1QF circuit breaker, the power supply dead electricity causes; Then 1TWJ can be closed, and 1KKJ still is state after closing a floodgate, and it is not corresponding to produce the 1QF circuit breaker position equally; After first main transformer does not have pressure on inspection; Time-delay tH3 starts a closing pulse to the 3QF closing circuit, and after the 3rd main transformer did not have pressure on inspection, time-delay tH4 started a closing pulse to the 4QF closing circuit.
(4) if jumping because of the second circuit breaker 2QF steals, the power supply dead electricity causes; Then 2TWJ can be closed, and 2KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the second circuit breaker 2QF position equally; After second main transformer does not have pressure on inspection; Time-delay tH3 starts a closing pulse to the 3QF closing circuit, and after the 3rd main transformer did not have pressure on inspection, time-delay tH4 started a closing pulse to the 4QF closing circuit.
(5) action causes if the second main transformer dead electricity is reason second main transformer protection; Then 2TWJ can be closed, and 2KKJ still is state after closing a floodgate, and it is not corresponding to produce the second circuit breaker 2QF circuit breaker position equally; Because corresponding locking has been adopted in protection action locking; The 4QF charge circuit can not discharge, and after the 3rd main transformer depressor did not have pressure on inspection, time-delay tH4 started a closing pulse to the 4QF closing circuit; And the 3QF charge circuit can be owing to second main transformer protection action discharge, so 3QF can not close a floodgate.
(6) if manually draw back 1QF or 2QF; Then 1KKJ or 2KKJ become state behind the separating brake by original combined floodgate back state; The circuit breaker position of 1QF or 2QF is not corresponding is false, and 3Tcd1,3Tcd3,4Tcd1, the discharge of 4Tcd2 charge circuit simultaneously be not so can start the closing circuit of 3QF, 4QF.
6, operational mode 6
6.1 the preparatory stage
Circuit breaker 1QF, 4QF are the 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, and its corresponding operating breaker 2KK, 3KK (or two-position relay 2KKJ, 3KKJ) memory is for behind the separating brake.Because 1KK, 4KK are the back state that closes a floodgate, so 1QF, 4QF trip(ping) circuit are open, and the closing circuit locking; Open simultaneously 2QF, 3QF combined floodgate charge circuit 2Tcd1,2Tcd2 and 3Tcd1,3Tcd2, as 2QF, then charge when 3QF satisfies charge condition, charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 1QF inspection do not have press and do not have stream, offside 4QF power supply pressure is arranged after, 1QF trips behind the tT1 that delays time.When first circuit breaker 1QF tripping operation control command has been sent the 1QF tripping operation and check really tripping of the first circuit breaker 1QF; The closed expression of 1QF tripping operation back 1TWJ 1QF is in trip position; And 1KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the first circuit breaker 1QF circuit breaker position, and after 2QF combined floodgate charge circuit 2Tcd1 charging was accomplished, time-delay tH2 started a closing pulse to the 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd1 charging was accomplished, time-delay tH3 started a closing pulse to the 3QF closing circuit.Or 2QF, 3QF were the separating brake position originally;, first circuit breaker 1QF tripping operation control command confirms really tripping of 1QF (becoming the separating brake position) after sending; After 2QF, 3QF combined floodgate charge circuit 2Tcd1,3Tcd1 charging were accomplished, time-delay tH2, tH3 started a closing pulse to 2QF, 3QF closing circuit.
(2) if the power supply dead electricity is caused that by first main transformer protection action because corresponding locking has been adopted in protection action locking, 3QF combined floodgate charge circuit can be by discharge with by locking, so 3QF still can move combined floodgate.And the 2QF charge circuit moves owing to first main transformer protection and discharge immediately, and the 2QF closing circuit is by locking, so 2QF can not close a floodgate simultaneously.
(3) if jumping because of the first circuit breaker 1QF steals, the power supply dead electricity causes; Then 1TWJ can be closed; And 1KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the first circuit breaker 1QF position equally, after 2QF combined floodgate charge circuit 2Tcd1 charging is accomplished; After first main transformer did not have pressure on inspection, time-delay tH2 started a closing pulse to the 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd1 charging was accomplished, after the first main transformer depressor did not have pressure on inspection, time-delay tH3 started a closing pulse to the 3QF closing circuit.
(4) if manually draw back 1QF, then 1KKJ becomes state behind the separating brake by original combined floodgates back state, and the circuit breaker position of 1QF is not corresponding is false, and 1Tcd1,2Tcd1 charge circuit discharge simultaneously, so 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, through the 4QF inspection do not have press and do not have stream, offside 1QF power supply pressure is arranged after, 4QF trips behind the tT4 that delays time.When the 4th circuit breaker 4QF tripping operation control command has been sent the 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF; The closed expression of 4QF tripping operation back 4TWJ 4QF is in trip position; And 4KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the 4th circuit breaker 4QF position, and after 2QF combined floodgate charge circuit 2Tcd2 charging was accomplished, time-delay tH2 started a closing pulse to the 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd2 charging was accomplished, time-delay tH3 started a closing pulse to the 3QF closing circuit.Or 2QF, 3QF were the separating brake position originally;, the 4th circuit breaker 4QF tripping operation control command confirms really tripping of 4QF (becoming the separating brake position) after sending; After 2QF, 3QF combined floodgate charge circuit 2Tcd2,3Tcd2 charging were accomplished, time-delay tH2, tH3 started a closing pulse to 2QF, 3QF closing circuit.
(2) if the power supply dead electricity is caused that by the 3rd main transformer protection action because corresponding locking has been adopted in protection action locking, 2QF combined floodgate charge circuit can be by discharge with by locking, so 2QF still can move combined floodgate.And the 3QF charge circuit moves owing to the 3rd main transformer protection and discharge immediately, and the 3QF closing circuit is by locking, so 3QF can not close a floodgate simultaneously.
(3) if jumping because of the 4th circuit breaker 4QF steals, the power supply dead electricity causes; Then 4TWJ can be closed; And 4KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the 4th circuit breaker 4QF position equally, after 2QF combined floodgate charge circuit 2Tcd2 charging is accomplished; After the 3rd main transformer did not have pressure on inspection, time-delay tH2 started a closing pulse to the 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd2 charging was accomplished, after the 3rd main transformer did not have pressure on inspection, time-delay tH3 started a closing pulse to the 3QF closing circuit.
(4) if manually draw back 4QF, then 4KKJ becomes state behind the separating brake by original combined floodgates back state, and the circuit breaker position of 4QF is not corresponding is false, and 2Tcd2,3Tcd2 charge circuit discharge simultaneously, so can not start the closing circuit of 2QF, 3QF.
7, operational mode 7
7.1 the preparatory stage
Circuit breaker 3QF, 4QF are the 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, and its corresponding operating breaker 1KK, 2KK (or two-position relay 1KKJ, 2KKJ) memory is for behind the separating brake.Because 3KK, 4KK are the back state that closes a floodgate, so the 4QF trip(ping) circuit is open, and 3QF, the locking of 4QF closing circuit; Open simultaneously 1QF, 2QF combined floodgate charge circuit 1Tcd1,1Tcd3 and 2Tcd3,2Tcd2, as 1QF, then charge when 2QF satisfies charge condition, charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 4QF inspection do not have press and do not have stream, offside 1QF power supply pressure is arranged after, 4QF trips behind the tT4 that delays time.When the 4th circuit breaker 4QF tripping operation control command has been sent the 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF; The closed expression of 4QF tripping operation back 4TWJ 4QF is in trip position; And 4KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the 4th circuit breaker 4QF position, and after 1QF combined floodgate charge circuit 1Tcd1 charging was accomplished, time-delay tH1 started a closing pulse to the 1QF closing circuit; After 2QF combined floodgate charge circuit 2Tcd2 charging was accomplished, time-delay tH2 started a closing pulse to the 2QF closing circuit simultaneously.Or 1QF, 2QF were the separating brake position originally;, the 4th circuit breaker 4QF tripping operation control command confirms really tripping of 4QF (becoming the separating brake position) after sending; After 1QF, 2QF combined floodgate charge circuit 1Tcd1,2Tcd2 charging were accomplished, time-delay tH1, tH2 started a closing pulse to 1QF, 2QF closing circuit.
(2) if the power supply dead electricity is caused that by the 3rd main transformer protection action because corresponding locking has been adopted in protection action locking, 1QF, 2QF charge circuit can be by discharges with by locking, so 1QF, 2QF still can move combined floodgate.
(3) if jumping because of the 4th circuit breaker 4QF steals, the power supply dead electricity causes; Then 4TWJ can be closed, and 4KKJ still is state after closing a floodgate, and it is not corresponding to produce the 4th circuit breaker 4QF circuit breaker position equally; After first main transformer does not have pressure on inspection; Time-delay tH1 starts a closing pulse to the 1QF closing circuit, and after the 3rd main transformer did not have pressure on inspection, time-delay tH2 started a closing pulse to the 2QF closing circuit.
(4) if jumping because of the 3rd circuit breaker 3QF steals, the power supply dead electricity causes; Then 3TWJ can be closed, and 3KKJ is still for closing a floodgate the back state, and it is not corresponding to produce the 3rd circuit breaker 3QF position equally; After first main transformer did not have pressure on inspection, time-delay tH1 started a closing pulse to the 1QF closing circuit; After second main transformer did not have pressure on inspection, time-delay tH2 started a closing pulse to the 2QF closing circuit.
(5) action causes if the power supply dead electricity is reason second main transformer protection; Then 3TWJ can be closed; And 3KKJ still is state after closing a floodgate, and it is not corresponding to produce the 3rd circuit breaker 3QF circuit breaker position equally, because corresponding locking has been adopted in protection action locking; The 1QF charge circuit can be by discharge with by locking, so 1QF still can move combined floodgate; And the 2QF charge circuit can be owing to second main transformer protection action discharge, so 2QF can not close a floodgate.
(6) if manually draw back 3QF or 4QF; Then 4KKJ or 4KKJ become state behind the separating brake by original combined floodgate back state; The circuit breaker position of 2QF or 4QF is not corresponding is false, and 1Tcd1,1Tcd3,2Tcd2, the discharge of 2Tcd3 charge circuit simultaneously be not so can start the closing circuit of 1QF, 2QF.
8, operational mode 8
8.1 the preparatory stage
Circuit breaker 1QF is the 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 behind the separating brake.Because 1KK is the back state that closes a floodgate, so the 1QF trip(ping) circuit is open, and the closing circuit locking; Open simultaneously 2QF, 3QF, 4QF combined floodgate charge circuit 2Tcd1,3Tcd1 and 4Tcd1, as 2QF, 3QF, then charge when 4QF satisfies charge condition, charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 1QF inspection do not have press and do not have stream, offside 4QF power supply pressure is arranged after, 1QF trips behind the tT1 that delays time.When first circuit breaker 1QF tripping operation control command has been sent the 1QF tripping operation and check really tripping of the first circuit breaker 1QF; The closed expression of 1QF tripping operation back 1TWJ 1QF is in trip position; And 1KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the first circuit breaker 1QF position, and after 2QF combined floodgate charge circuit 2Tcd1 charging was accomplished, time-delay tH2 started a closing pulse to the 2QF closing circuit; After 3QF combined floodgate charge circuit 3Tcd1 charging was accomplished, time-delay tH3 started a closing pulse to the 3QF closing circuit simultaneously; After 4QF combined floodgate charge circuit 4Tcd1 charging was accomplished, time-delay tH4 started a closing pulse to the 4QF closing circuit simultaneously.Or 2QF, 3QF, 4QF were the separating brake position originally;, first circuit breaker 1QF tripping operation control command confirms really tripping of 1QF (becoming the separating brake position) after sending; After 2QF, 3QF, 4QF combined floodgate charge circuit 2Tcd1,3Tcd1,4Tcd1 charging were accomplished, time-delay tH2, tH3, tH4 started a closing pulse to 2QF, 3QF, 4QF closing circuit.
(2) if the power supply dead electricity is caused that by first main transformer protection action because corresponding locking has been adopted in protection action locking, 3QF, 4QF combined floodgate charge circuit can be by discharges with by locking, so 3QF, 4QF still can move combined floodgate.And the 2QF charge circuit moves owing to first main transformer protection and discharge immediately, and the 2QF closing circuit is by locking, so 2QF can not close a floodgate simultaneously.
(3) if jumping because of the first circuit breaker 1QF steals, the power supply dead electricity causes; Then 1TWJ can be closed; And 1KKJ is still for closing a floodgate the back state; The same first circuit breaker 1QF position that produces is not corresponding, and the 3rd main transformer does not have the back of pressure after 4QF combined floodgate charge circuit 4Tcd1 charging is accomplished on inspection, and time-delay tH4 starts a closing pulse to the 4QF closing circuit; First main transformer does not have the back of pressure after 2QF combined floodgate charge circuit 2Tcd1 charging is accomplished on inspection, and time-delay tH2 starts a closing pulse to the 2QF closing circuit; First main transformer does not have the back of pressure after 3QF combined floodgate charge circuit 3Tcd1 charging is accomplished on inspection, and time-delay tH3 starts a closing pulse to the 3QF closing circuit.
(4) if manually draw back 1QF; Then 1KKJ becomes state behind the separating brake by original combined floodgate back state; The circuit breaker position of 1QF is not corresponding is false; So 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 the 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 behind the separating brake.Because 4KK is the back state that closes a floodgate, so the 4QF trip(ping) circuit is open, and the closing circuit locking; Open simultaneously 1QF, 2QF, 3QF combined floodgate charge circuit 1Tcd1,2Tcd2 and 3Tcd2, as 1QF, 2QF, then charge when 3QF satisfies charge condition, charging again behind the charge condition is satisfied in then thoroughly discharge immediately when not satisfying 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, through the 4QF inspection do not have press and do not have stream, offside 1QF power supply pressure is arranged after, 4QF trips behind the tT4 that delays time.When the 4th circuit breaker 4QF tripping operation control command has been sent the 4QF tripping operation and check really tripping of the 4th circuit breaker 4QF; The closed expression of 4QF tripping operation back 4TWJ 4QF is in trip position; And 4KKJ is for closing a floodgate the back state; Thereby it is not corresponding to produce the 4th circuit breaker 4QF position, and after 1QF combined floodgate charge circuit 1Tcd1 charging was accomplished, time-delay tH1 started a closing pulse to the 1QF closing circuit; After 2QF combined floodgate charge circuit 2Tcd2 charging was accomplished, time-delay tH2 started a closing pulse to the 2QF closing circuit simultaneously; After 3QF combined floodgate charge circuit 3Tcd2 charging was accomplished, time-delay tH3 started a closing pulse to the 3QF closing circuit simultaneously.Or 1QF, 2QF, 3QF were the separating brake position originally;, first circuit breaker 1QF tripping operation control command confirms really tripping of 1QF (becoming the separating brake position) after sending; After 1QF, 2QF, 3QF combined floodgate charge circuit 1Tcd1,2Tcd2,3Tcd charging were accomplished, time-delay tH1, tH2tH3 started a closing pulse to 1QF, 2QF, 3QF closing circuit.
(2) if the power supply dead electricity is caused that by the 3rd main transformer protection action because corresponding locking has been adopted in protection action locking, 1QF, 2QF combined floodgate charge circuit can be by discharges with by locking, so 1QF, 2QF still can move combined floodgate.And the 3QF charge circuit moves owing to the 3rd main transformer protection and discharge immediately, and the 3QF closing circuit is by locking, so 3QF can not close a floodgate simultaneously.
(3) if jumping because of the 4th circuit breaker 4QF steals, the power supply dead electricity causes; Then 4TWJ can be closed; And 4KKJ is still for closing a floodgate the back state; Same the 4th circuit breaker 4QF position that produces is not corresponding, and first main transformer does not have the back of pressure after 1QF combined floodgate charge circuit 1Tcd1 charging is accomplished on inspection, and time-delay tH1 starts a closing pulse to the 1QF closing circuit; The 3rd main transformer does not have the back of pressure after 2QF combined floodgate charge circuit 2Tcd2 charging is accomplished on inspection, and time-delay tH2 starts a closing pulse to the 2QF closing circuit; The 3rd main transformer does not have the back of pressure after 3QF combined floodgate charge circuit 3Tcd2 charging is accomplished on inspection, and time-delay tH3 starts a closing pulse to the 3QF closing circuit.
(4) if manually draw back 4QF; Then 4KKJ becomes state behind the separating brake by original combined floodgate back state, and the circuit breaker position of 4QF is not corresponding is false, so 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 is sent out the prepared auto restart actuating signal after exporting with combined floodgate immediately;
10.2 after the main transformer protection action, in the time of locking prepared auto restart closing circuit, send out main transformer protection action locking prepared auto restart switching signal;
10.3 system does not occur unusually, the prepared auto restart operation is normal, voltage or current circuit take place unusual, and the backup auto-activating device abnormal signal is sent out in time-delay.
Claims (1)
1. method that the microcomputer control standby power that enlarges internal bridge drops into automatically; Enlarge the internal bridge mode for standard in main electrical scheme of the electric substation of applied transmission and distribution networks; Include the two-way power supply; Be serially connected with four circuit breakers on the two-way power supply respectively, i.e. the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF; Also connect three main transformers between each circuit breaker respectively, i.e. first main transformer, second main transformer and the 3rd main transformer; Promptly 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 the electric power incoming line circuit breaker, two circuit breakers are the bridge circuit breaker in addition; The line side of electric power incoming line and transformer high-voltage side or low-pressure side all are connected to voltage transformer; It is characterized in that: its control method comprises following control procedure:
The tripping operation control of the control procedure A. first circuit breaker 1QF, promptly
When the first circuit breaker 1QF source current 1I1 does not have stream definite value, 1QF supply voltage 1U1 and has compression set value and 1QF manually to control circuit breaker 1KK or its deciliter state less than the no compression set value of separating brake inspection, the 4th circuit breaker 4QF supply voltage 2U1 greater than the separating brake inspection less than separating brake inspection two-position relay 1KKJ be in close a floodgate after these several conditions of position when satisfying simultaneously; Through certain delay tT1; To first circuit breaker 1QF tripping operation control loop output pulse control signal; Make first circuit breaker 1QF tripping operation, export stand-by power supply input tripping operation actuating signal simultaneously;
The tripping operation control of control procedure B. the 4th circuit breaker 4QF
When the 4th circuit breaker 4QF source current 4I1 does not have stream definite value, 4QF supply voltage 2U1 and has compression set value and 4QF manually to control circuit breaker 4KK or its deciliter state less than the no compression set value of separating brake inspection, the first circuit breaker 1QF supply voltage 1U1 greater than the separating brake inspection less than separating brake inspection two-position relay 4KKJ be in close a floodgate after these several conditions of position when satisfying simultaneously; Through certain 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 stand-by power supply input tripping operation actuating signal simultaneously;
The control procedure C. first circuit breaker 1QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 4KKJ of the hand control switch 4KK of the 4th circuit breaker 4QF or its deciliter state is in separating brake;
(3) when first main transformer protection 1BCJ action;
(4) send the combined floodgate control command as the first circuit breaker 1QF;
Condition b. charge condition one
(1) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 1TWJ of first circuit breaker 1QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the first circuit breaker 1QF circuit breaker is accomplished the charging of closing a floodgate through charging time-delay back and is controlled;
Condition c. discharging condition two
(1) when the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state is in separating brake;
(3) when first main transformer protection 1BCJ action;
(4) send the combined floodgate control command as the first circuit breaker 1QF;
Condition d. charge condition two
(1) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 1TWJ of first circuit breaker 1QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the first circuit breaker 1QF circuit breaker is accomplished the charging of closing a floodgate through charging time-delay back and is controlled;
Condition e. discharging condition three
(1) when the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state be in close a floodgate after the position;
(1) position after the two-position relay 3KKJ of the hand control switch 3KK of the 3rd circuit breaker 3QF or its deciliter state is in separating brake;
(3) when first main transformer protection 1BCJ action;
(4) send the combined floodgate control command as the first circuit breaker 1QF;
Condition f. charge condition three
(1) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 1TWJ of first circuit breaker 1QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the first circuit breaker 1QF circuit breaker is accomplished the charging of closing a floodgate through charging time-delay back and is controlled;
The control procedure D. first circuit breaker 1QF control of closing a floodgate
The condition a. first circuit breaker 1QF breaker closing controlled condition one:
(1) sent and checked the really tripping of 4QF circuit breaker when the 4th circuit breaker 4QF tripping operation control command; Or when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in and closes a floodgate simultaneously and the 4th circuit breaker 4QF is in the separating brake position;
(2) 1Tcd1 charging delay time arrives;
(3) first main transformer protections are action not;
When above condition satisfies, output pulse control signal to the first circuit breaker 1QF combined floodgate control loop after time-delay, the first circuit breaker 1QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
The condition b. first circuit breaker 1QF combined floodgate controlled condition two:
(1) when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in and closes a floodgate simultaneously and the second circuit breaker 2QF is in the separating brake position;
(2) 1Tcd2 charging delay time arrives;
(3) first main transformer protections are action not;
When above condition all satisfies, after time-delay, export pulse control signal to the first circuit breaker 1QF combined floodgate control loop equally, the first circuit breaker 1QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
The condition c. first circuit breaker 1QF combined floodgate controlled condition three:
(1) when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in and closes a floodgate simultaneously and the 3rd circuit breaker 3QF is in the separating brake position;
(2) 1Tcd3 charging delay time arrives;
(3) first main transformer protections are action not;
When above condition all satisfies, after time-delay, export pulse control signal to the first circuit breaker 1QF combined floodgate control loop equally, the first circuit breaker 1QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
The control procedure E. second circuit breaker 2QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state is in separating brake;
(3) when first main transformer protection 1BCJ action;
(4) send the combined floodgate control command as the second circuit breaker 2QF;
Condition b. charge condition one
(1) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 2TWJ of second circuit breaker 2QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the second circuit breaker 2QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
Condition c. discharging condition two
(1) when the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in separating brake;
(3) when second main transformer protection 2BCJ action;
(4) send the combined floodgate control command as the second circuit breaker 2QF;
Condition d. charge condition two
(1) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 2TWJ of second circuit breaker 2QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the second circuit breaker 2QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
Condition c. discharging condition three
(1) when the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when second main transformer protection 2BCJ action;
(4) send the combined floodgate control command as the second circuit breaker 2QF;
Condition e. charge condition three
(1) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 2TWJ of second circuit breaker 2QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the second circuit breaker 2QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
The control procedure F. second circuit breaker 2QF control of closing a floodgate
The condition a. second circuit breaker 2QF combined floodgate controlled condition one:
(1) sent and checked really tripping of the first circuit breaker 1QF when the first circuit breaker 1QF circuit breaker trip control command; Or when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in and closes a floodgate simultaneously and the first circuit breaker 1QF is in the separating brake position;
(2) 2Tcd1 charging delay time arrives;
(3) first main transformer protections are action not;
When above condition satisfies, output pulse control signal to the second circuit breaker 2QF combined floodgate control loop after time-delay, the second circuit breaker 2QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
The condition b. second circuit breaker 2QF combined floodgate controlled condition two:
(1) sent and checked the really tripping of 4QF circuit breaker when the 4th circuit breaker 4QF tripping operation control command; Or when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in and closes a floodgate simultaneously and the 4th circuit breaker 4QF is in the separating brake position;
2Tcd2 charging delay time arrives;
Second main transformer protection is action not;
When above condition all satisfies, after time-delay, export pulse control signal to the second circuit breaker 2QF combined floodgate control loop equally, the second circuit breaker 2QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
The condition c. second circuit breaker 2QF combined floodgate controlled condition three:
(1) when the second main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in and closes a floodgate simultaneously and the 3rd circuit breaker 3QF is in the separating brake position;
2Tcd3 charging delay time arrives;
Second main transformer protection is action not;
When above condition all satisfies, after time-delay, export pulse control signal to the second circuit breaker 2QF combined floodgate control loop equally, the second circuit breaker 2QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
Control procedure G. the 3rd circuit breaker 3QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when the two-position relay 3KKJ of the hand control switch 3KK of the 3rd circuit breaker 3QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 1KKJ of the hand control switch 1KK of the first circuit breaker 1QF or its deciliter state is in separating brake;
When second main transformer protection 2BCJ action;
When the 3rd circuit breaker 3QF sends the combined floodgate control command;
Condition b. charge condition one
(1) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 3TWJ of the 3rd circuit breaker 3QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 3rd circuit breaker 3QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
Condition c. discharging condition two
(1) when the two-position relay 3KKJ of the hand control switch 3KK of the 3rd circuit breaker 3QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 2KK or its deciliter state is in separating brake;
(3) when the 3rd main transformer protection 3BCJ action;
(4) send the combined floodgate control command as the 3rd circuit breaker 3QF;
Condition d. charge condition two
(1) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 3TWJ of the 3rd circuit breaker 3QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 3rd circuit breaker 3QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
Condition e. discharging condition three
(1) when the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when second main transformer protection 2BCJ action;
(4) send the combined floodgate control command as the 3rd circuit breaker 3QF
Condition f. charge condition three
(1) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 3TWJ of the 3rd circuit breaker 3QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 3rd circuit breaker 3QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
Control procedure H. the 3rd circuit breaker 3QF control of closing a floodgate
Condition a. the 3rd circuit breaker 3QF combined floodgate controlled condition one:
(1) sent and checked really tripping of the first circuit breaker 1QF when first circuit breaker 1QF tripping operation control command; Or when the first main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in and closes a floodgate simultaneously and the first circuit breaker 1QF is in the separating brake position;
(2) 3Tcd1 charging delay time arrives;
(3) second main transformer protections are action not;
When above condition satisfies, output pulse control signal to the three circuit breaker 3QF combined floodgate control loops after time-delay, the 3rd circuit breaker 3Q closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
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 when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in and closes a floodgate simultaneously and the 4th circuit breaker 4QF is in the separating brake position;
(2) 3Tcd2 charging delay time arrives;
(3) the 3rd main transformer protections are action not;
When above condition all satisfies, after time-delay, export pulse control signal to the three circuit breaker 3QF combined floodgate control loops equally, the 3rd circuit breaker 3QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
Condition c. the 3rd circuit breaker 3QF combined floodgate controlled condition three:
(1) when the second main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in and closes a floodgate simultaneously and the second circuit breaker 2QF is in the separating brake position;
(2) 3Tcd3 charging delay time arrives;
(3) second main transformer protections are action not;
When above condition all satisfies, after time-delay, export pulse control signal to the three circuit breaker 3QF combined floodgate control loops equally, the 3rd circuit breaker 3QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
Control procedure I. the 4th circuit breaker 4QF closes a floodgate and discharges and recharges control
Condition a. discharging condition one
(1) when the two-position relay 4KKJ of the hand control switch 1KK of the 4th circuit breaker 4QF or its deciliter state be in close a floodgate after the position;
(2) position after the two-position relay 1KKJ of the hand control switch 4KK of the first circuit breaker 1QF or its deciliter state is in separating brake;
(3) when the 3rd main transformer protection 3BCJ action;
(4) send the combined floodgate control command as the 4th circuit breaker 4QF;
Condition b. charge condition one
(1) position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 1KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 4TWJ of the 4th circuit breaker 4QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 4th circuit breaker 4QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
Condition c. discharging condition two
(1) when the two-position relay 4KKJ of the hand control switch 4KK of the 4th circuit breaker 4QF or its deciliter state be in close a floodgate after the position;
(1) position after the two-position relay 2KKJ of the hand control switch 2KK of the second circuit breaker 2QF or its deciliter state is in separating brake;
(3) when the 3rd main transformer protection 3BCJ action;
(4) send the combined floodgate control command as the 4th circuit breaker 4QF;
Condition d. charge condition two
(1) position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 4TWJ of the 4th circuit breaker 4QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 4th circuit breaker 4QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
Condition e. discharging condition three
(1) when the two-position relay 4KKJ of the hand control switch 4KK of the 4th circuit breaker 4QF or its deciliter state be in close a floodgate after the position;
(1) position after the two-position relay 3KKJ of the hand control switch 3KK of the 3rd circuit breaker 3QF or its deciliter state is in separating brake;
(3) when the 3rd main transformer protection 3BCJ action;
(4) send the combined floodgate control command as the 4th circuit breaker 4QF;
Condition f. charge condition three
(1) position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in combined floodgate;
(2) position after the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state is in separating brake;
(3) when the separating brake position relay 4TWJ of the 4th circuit breaker 4QF action;
When above-mentioned arbitrary charge condition satisfies and arbitrary discharging condition when not satisfying, the 4th circuit breaker 4QF accomplishes the charging of closing a floodgate through charging time-delay back and controls;
Control procedure J. the 4th circuit breaker 4QF control of closing a floodgate
Condition a. the 4th circuit breaker 4QF combined floodgate controlled condition one:
(1) sent and checked really tripping of the first circuit breaker 1QF when first circuit breaker 1QF tripping operation control command; Or when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state is in and closes a floodgate simultaneously and the first circuit breaker 1QF is in the separating brake position;
(2) 4Tcd1 charging delay time arrives;
(3) the 3rd main transformer protections are action not;
When above condition satisfies, output pulse control signal to the four circuit breaker 4QF combined floodgate control loops after time-delay, the 4th circuit breaker 4QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
Condition b. the 4th circuit breaker 4QF combined floodgate controlled condition two:
(1) when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state is in and closes a floodgate simultaneously and the second circuit breaker 2QF is in the separating brake position;
(2) 4Tcd2 charging delay time arrives;
(3) the 3rd main transformer protections are action not;
When above condition all satisfies, after time-delay, export pulse control signal to the four circuit breaker 4QF combined floodgate control loops equally, the 4th circuit breaker 4QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
Condition c. the 4th circuit breaker 4QF combined floodgate controlled condition three:
(1) when the 3rd main transformer high side voltage less than the no compression set value of inspection of closing a floodgate, position after the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state is in and closes a floodgate simultaneously and the 3rd circuit breaker 3QF is in the separating brake position;
(2) 4Tcd3 charging delay time arrives;
(3) the 3rd main transformer protections are action not;
When above condition all satisfies, after time-delay, export pulse control signal to the four circuit breaker 4QF combined floodgate control loops equally, the 4th circuit breaker 4QF closes a floodgate, and exports stand-by power supply simultaneously and drops into the feed motion signal;
The control of control procedure K. abnormal signal
(1) when the first main transformer high-pressure side or low-pressure side voltage less than the no compression set value of inspection of closing a floodgate; Or second main transformer high-pressure side or low-pressure side voltage less than the no compression set value of inspection of closing a floodgate; Or the 3rd main transformer high-pressure side or low-pressure side voltage less than the no compression set value of inspection of closing a floodgate, after certain time-delay, send abnormal signal;
(2) do not send the tripping operation control command as the first circuit breaker 1QF; And the first circuit breaker 1QF source current 1I1 less than separating brake inspection do not have two-position relay 1KKJ that stream definite value or the first circuit breaker 1QF supply voltage 1U1 manually control circuit breaker 1KK or its deciliter state less than separating brake the no compression set value of inspection and the first circuit breaker 1QF be in close a floodgate after during the position, after certain time-delay, send abnormal signal;
(3) do not send the tripping operation control command as the 4th circuit breaker 4QF; And the 4th circuit breaker 4QF source current 4I1 less than separating brake inspection do not have two-position relay 4KKJ that stream definite value or the 4th circuit breaker 4QF supply voltage 2U1 manually control circuit breaker 4KK or its deciliter state less than separating brake the no compression set value of inspection and 4QF be in close a floodgate after during the position, after certain time-delay, send abnormal signal.
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| CN103219793A (en) * | 2013-04-25 | 2013-07-24 | 国家电网公司 | Decoupling control method of multifunctional microprocessor control backup power automatic switch |
| CN114243655A (en) * | 2021-12-16 | 2022-03-25 | 广东电网有限责任公司 | Locking control method and related device |
| CN117791564A (en) * | 2023-12-05 | 2024-03-29 | 威胜能源技术股份有限公司 | Energy storage box transformer substation safety operation circuit and control method thereof |
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Owner name: JIANGSU ELECTRIC POWER CO. STATE ELECTRIC NET CROP Effective date: 20121106 |
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Effective date of registration: 20121106 Address after: 212001 No. 15 South Mount Huangshan Road, Jiangsu, Zhenjiang Applicant after: Zhenjiang Power Supply Company, Jiangsu Prov. Power Co. Applicant after: Jiangsu Electric Power Company Applicant after: State Grid Corporation of China Address before: 212001 No. 15 South Mount Huangshan Road, Jiangsu, Zhenjiang Applicant before: Zhenjiang Power Supply Company, Jiangsu Prov. Power Co. |
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