CN103280880B

CN103280880B - Decoupling control method for controlling backup power supply automatic switching by expansion inner bridge microcomputer

Info

Publication number: CN103280880B
Application number: CN201310146588.7A
Authority: CN
Inventors: 汤大海; 陈永明; 杨茹
Original assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Zhenjiang Power Supply Co of Jiangsu Electric Power Co
Current assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Zhenjiang Power Supply Co of Jiangsu Electric Power Co
Priority date: 2013-04-25
Filing date: 2013-04-25
Publication date: 2015-03-04
Anticipated expiration: 2033-04-25
Also published as: CN103280880A

Abstract

The invention belongs to the electric power transmission and distribution network control technology, and relates to a decoupling control method for controlling backup power supply automatic switching by an expansion inner bridge microcomputer. According to the method, a standard expansion inner bridge connection wire is decoupled into two inner bridge connection wires, i.e., a first circuit breaker 1QF, a second circuit breaker 2QF and a fourth circuit breaker 4QF form a first inner bridge connection wire, the first circuit breaker 1QF, a third circuit breaker 3QF and the fourth circuit breaker 4QF form a second inner bridge connection wire, and respective backup power supply automatic switching control logic circuits of the two inner bridge connection wires simultaneously act for forming a complete backup power supply automatic switching logic of the expansion inner bridge connection wires. The method provided by the invention can be applied to automatic switching devices of the backup power supply of the expansion inner bridge connection wires in substations in the power transmission and distribution network at the voltage level being 220kv or lower than 220kv adopting primary main connection wires for supplying power for double power supplies, in addition, the action principle is simple, the reliability is high, and the method completely conforms to the basic principle of the automatic switching of the backup power supply.

Description

In expanding, bridge microcomputer controls the decoupling control method that prepared auto restart enters

Technical field

The invention belongs to power transmission and distribution network-based control technology, relate to a kind of decoupling control method expanding interior bridge microcomputer control prepared auto restart and enter.

Background technology

At present, the automatic throw-in equipment of emergency power supply that electric substation runs common are the automatic throw-in equipment of emergency power supply that electric substation's primary connection circuit is internal bridge, single-trunk segmental wiring and single bus scheme.And although the manufactory that electric substation's primary connection circuit is the automatic throw-in equipment of emergency power supply prepared auto restart of expanded inter-bridge connection produced, the control method that this automatic throw-in equipment of emergency power supply adopts and general principle are the operational modes by arranging in advance, and setting process has come under this operational mode, operational mode also failed to contain expanded inter-bridge connection whole service mode completely.Although propose the scheme of several expanded inter-bridge connection alternate power autocast in patent of invention CN101436787 and patent of invention CN10240783A " method that the microcomputer control standby power of expanded inter-bridge connection drops into automatically ", the realization of its logical circuit is still more complicated.

Described expanded inter-bridge connection (see figure 1) refers to: in electric substation's primary connection circuit of transmission and distribution networks, include two-way power supply, four circuit breakers are serially connected with between two-way power supply, 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 transformers respectively, i.e. the first transformer, the second transformer and the 3rd transformer, namely this mode of connection comprises two-way electric power incoming line, three step-down transformers, four circuit breakers, wherein two circuit breakers are electric power incoming line circuit breaker, and another two circuit breakers are bridge circuit breaker.The line side of electric power incoming line and high voltage side of transformer or low-pressure side are all connected to voltage transformer.

Summary of the invention

Problem to be solved by this invention is, there is provided a kind of and can be applied to the automatic throw-in equipment of emergency power supply that transmission and distribution networks 220kV and following electric pressure electric substation primary connection circuit are the expanded inter-bridge connection of dual power supply, and the decoupling control method that operating principle is simple, reliability is high, the expanded inter-bridge connection microcomputer control standby power that meets the general principle of alternate power autocast completely drops into automatically.

Provide the technical scheme of the inventive method below:

The transmission and distribution networks applied in method of the present invention is 220kV and following electric pressure electric substation expanded inter-bridge connection primary connection circuit network; The decoupling control method that this expanded inter-bridge connection microcomputer control standby power drops into automatically is: be two internal bridges by the decoupling zero of standard expanded inter-bridge connection, namely formed first internal bridge by the first circuit breaker 1QF, the second circuit breaker 2QF and the 4th circuit breaker 4QF and formed second internal bridge by the first circuit breaker 1QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF, be made up of the prepared auto restart logic of a complete expanded inter-bridge connection the control logic circuit acting in conjunction of these two internal bridges prepared auto restart separately; Wherein first internal bridge, the control logic circuit of its prepared auto restart is defined as prepared auto restart 1; Second internal bridge, the control logic circuit of its prepared auto restart is defined as prepared auto restart 2;

Tripping operation control and the shutting-brake control method of this expanded inter-bridge connection prepared auto restart respective circuit breakers are:

A. the tripping operation of the first circuit breaker 1QF controls

Prepared auto restart 1 or prepared auto restart 2: when the first circuit breaker 1QF source current 1I1 is less than trip inspection no flow setpoint, first circuit breaker 1QF supply voltage 1U1 is less than trip inspection definite value with no pressure, 4th circuit breaker 4QF supply voltage 4U1 be greater than trip inspection have the two-position relay 1KKJ of compression set value and the first circuit breaker 1QF Non-follow control circuit breaker 1KK or its deciliter state to be in close a floodgate after position these conditions when simultaneously meeting, through certain time delay tT1, pulse control signal is exported to the first circuit breaker 1QF tripping operation control loop, first circuit breaker 1QF is tripped, export in-put of spare power supply trip operation signal simultaneously.

B. the tripping operation of the 4th circuit breaker 4QF controls

Prepared auto restart 1 or prepared auto restart 2: when the 4th circuit breaker 4QF source current 4I1 is less than trip inspection no flow setpoint, 4th circuit breaker 4QF supply voltage 4U1 is less than trip inspection definite value with no pressure, first circuit breaker 1QF supply voltage 1U1 be greater than trip inspection have the two-position relay 4KKJ of compression set value and the 4th circuit breaker 4QF Non-follow control circuit breaker 4KK or its deciliter state to be in close a floodgate after position these conditions when simultaneously meeting, through certain time delay tT4, pulse control signal is exported to the 4th circuit breaker 4QF tripping operation control loop, 4th circuit breaker 4QF is tripped, export in-put of spare power supply trip operation signal simultaneously.

C. the first circuit breaker 1QF combined floodgate charge and discharge control

C-1 discharging condition

Prepared auto restart 1

(1) when the first circuit breaker 1QF or the hand control switch (1KK or 2KK or 4KK) of the second circuit breaker 2QF or the 4th circuit breaker 4QF or the two-position relay of its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the second circuit breaker 2QF or the 4th circuit breaker 4QF is in open position (namely not corresponding), or first transformer side voltage be less than set point or the second transformer side voltage is less than set point (combined floodgate checkout voltage control word puts 1), discharge after certain time-delay;

(2) position after the hand control switch 1KK of the first circuit breaker 1QF or the two-position relay 1KKJ of its deciliter state is in combined floodgate;

(3) when the first circuit breaker 1QF is in closing position;

(4) when the first tranformer protection action;

(5) when the first circuit breaker 1QF sends shutting-brake control order;

Prepared auto restart 2:

(1) when the first circuit breaker 1QF or the hand control switch (1KK or 3KK or 4KK) of the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF or the two-position relay of its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF is in open position (namely not corresponding), or first transformer side voltage be less than set point or the 3rd transformer side voltage is less than set point (combined floodgate checkout voltage control word puts 1), discharge after certain time-delay;

(3) when the first circuit breaker 1QF is in closing position;

(4) when the first tranformer protection action;

(5) when the first circuit breaker 1QF sends shutting-brake control order;

C-2 charge condition

Prepared auto restart 1

(1) when the two-position relay (4KKJ or 2KKJ) of the 4th circuit breaker 4QF or the second circuit breaker 2QF hand control switch (4KK or 2KK) or its deciliter state be in close a floodgate after position;

(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;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes charging of closing a floodgate and controls after charging time delay (delay time is 1Tcd1, can be set to 20 seconds).

Prepared auto restart 2

(1) when the two-position relay (4KKJ or 3KKJ) of the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF hand control switch (4KK or 3KK) or its deciliter state be in close a floodgate after position;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes charging of closing a floodgate and controls after charging time delay (delay time is 1Tcd2, can be set to 20 seconds).

D. the first circuit breaker 1QF shutting-brake control

D-1 prepared auto restart 1 first circuit breaker 1QF shutting-brake control one

(1) when the 4th circuit breaker 4QF tripping operation control command has sent and checked the 4th circuit breaker 4QF indeed tripping, or when the first transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state be in and close a floodgate after position and the 4th circuit breaker 4QF is in open position (namely the 4th circuit breaker 4QF position is not corresponding);

(2) 1Tcd1 charging delay time arrives;

(3) first tranformer protections do not have action;

When above condition meets, after time delay (delay time is tH1), export pulse control signal to the first circuit breaker 1QF shutting-brake control loop, the first circuit breaker 1QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.

D-2 prepared auto restart 1 first circuit breaker 1QF shutting-brake control two

(1) when the first transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state be in and close a floodgate after position and the second circuit breaker 2QF is in open position (namely the second circuit breaker 2QF position is not corresponding);

(2) 1Tcd1 charging delay time arrives;

(3) first tranformer protections do not have action;

D-3 prepared auto restart 2 first circuit breaker 1QF shutting-brake control one

(2) 1Tcd2 charging delay time arrives;

(3) first tranformer protections do not have action;

D-4 prepared auto restart 2 first circuit breaker 1QF shutting-brake control two

(1) when the first transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state be in and close a floodgate after position and the 3rd circuit breaker 3QF is in open position (namely the 3rd circuit breaker 3QF position is not corresponding);

(2) 1Tcd2 charging delay time arrives;

(3) first tranformer protections do not have action;

E.2QF breaker closing charge and discharge control

E-1 discharging condition

Prepared auto restart 1:

(2) position after the hand control switch 1KK of the second circuit breaker 2QF or the two-position relay 2KKJ of its deciliter state is in combined floodgate;

(3) when the second circuit breaker 2QF is in closing position;

(4) when the first tranformer protection or the second tranformer protection action;

(5) when the second circuit breaker 2QF sends shutting-brake control order;

E-2 charge condition

Prepared auto restart 1

(1) when the two-position relay (4KKJ or 1KKJ) of the 4th circuit breaker 4QF or the first circuit breaker 1QF hand control switch (4KK or 1KK) or its deciliter state be in close a floodgate after position;

(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;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the second circuit breaker 2QF completes charging of closing a floodgate and controls after charging time delay (delay time is 2Tcd1, can be set to 20 seconds).

F. the second circuit breaker 2QF shutting-brake control

F-1 prepared auto restart 1 second circuit breaker 2QF shutting-brake control one

(1) when the first circuit breaker 1QF tripping operation control command has sent and checked the first circuit breaker 1QF indeed tripping, or when the first transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state be in and close a floodgate after position and the first circuit breaker 1QF is in open position (namely the first circuit breaker 1QF position is not corresponding);

(2) 2Tcd1 charging delay time arrives;

(3) first tranformer protections or the second tranformer protection do not have action;

When above condition meets, after time delay (delay time is tH2), export pulse control signal to the second circuit breaker 2QF shutting-brake control loop, the second circuit breaker 2QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.

F-2 prepared auto restart 1 second circuit breaker 2QF shutting-brake control two

(1) when the 4th circuit breaker 4QF tripping operation control command has sent and checked the 4th circuit breaker 4QF indeed tripping, or when the second transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state be in and close a floodgate after position and the 4th circuit breaker 4QF is in open position (namely the 4th circuit breaker 4QF position is not corresponding);

(2) 2Tcd1 charging delay time arrives;

F-3 prepared auto restart 1 second circuit breaker 2QF shutting-brake control three

(1) when the second transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state be in and close a floodgate after position and the 3rd circuit breaker 3QF is in open position (namely the 3rd circuit breaker 3QF position is not corresponding);

(2) 2Tcd1 charging delay time arrives;

G.3QF breaker closing charge and discharge control

G-1 discharging condition

Prepared auto restart 2:

(1) when the first circuit breaker 1QF or the hand control switch (1KK or 2KK or 4KK) of the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF or the two-position relay of its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF is in open position (namely not corresponding), or first transformer side voltage be less than set point or the 3rd transformer side voltage is less than set point (combined floodgate checkout voltage control word puts 1), discharge after certain time-delay;

(2) position after the hand control switch 3KK of the 3rd circuit breaker 3QF or the two-position relay 3KKJ of its deciliter state is in combined floodgate;

(3) when the 3rd circuit breaker 3QF is in closing position;

(4) when the second tranformer protection or the 3rd tranformer protection action;

(5) when the 3rd circuit breaker 3QF sends shutting-brake control order;

G-2 charge condition

Prepared auto restart 2:

(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;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the 3rd circuit breaker 3QF completes charging of closing a floodgate and controls after charging time delay (delay time is 3Tcd1, can be set to 20 seconds).

H. the 3rd circuit breaker 3QF shutting-brake control

H-1 prepared auto restart 2 the 3rd circuit breaker 3QF shutting-brake control one

(2) 3Tcd1 charging delay time arrives;

(3) second tranformer protections or the 3rd tranformer protection do not have action;

When above condition meets, after time delay (delay time is tH3), export pulse control signal to the 3rd circuit breaker 3QF shutting-brake control loop, the 3rd circuit breaker 3QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.

H-2 prepared auto restart 2 the 3rd circuit breaker 3QF shutting-brake control two

(1) when the 4th circuit breaker 4QF tripping operation control command has sent and checked the 4th circuit breaker 4QF indeed tripping, or when the 3rd transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state be in and close a floodgate after position and the 4th circuit breaker 4QF is in open position (namely the 4th circuit breaker 4QF position is not corresponding);

(2) 3Tcd1 charging delay time arrives;

H-3 prepared auto restart 2 the 3rd breaker closing controls three

(1) when the second transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state be in and close a floodgate after position and the second circuit breaker 2QF is in open position (namely the second circuit breaker 2QF position is not corresponding);

(2) 3Tcd1 charging delay time arrives;

I.4QF breaker closing charge and discharge control

I-1 discharging condition

Prepared auto restart 1:

(2) position after the hand control switch 4KK of the 4th circuit breaker 4QF or the two-position relay 4KKJ of its deciliter state is in combined floodgate;

(3) when the 4th circuit breaker 4QF is in closing position;

(4) when the 3rd tranformer protection action;

(5) when the 4th circuit breaker 4QF sends shutting-brake control order;

Prepared auto restart 2:

(3) when the 4th circuit breaker 4QF is in closing position;

(4) when the 3rd tranformer protection action;

(5) when the 4th circuit breaker 4QF sends shutting-brake control order;

I-2 charge condition

Prepared auto restart 1

(1) when the two-position relay (1KKJ or 2KKJ) of the first circuit breaker 4QF or the second circuit breaker 2QF hand control switch (1KK or 2KK) or its deciliter state be in close a floodgate after 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;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes charging of closing a floodgate and controls after charging time delay (delay time is 4Tcd1, can be set to 20 seconds).

Prepared auto restart 2

(1) when the two-position relay (1KKJ or 3KKJ) of the first circuit breaker 4QF or the 3rd circuit breaker 3QF hand control switch (1KK or 3KK) or its deciliter state be in close a floodgate after position;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes charging of closing a floodgate and controls after charging time delay (delay time is 4Tcd2, can be set to 20 seconds).

J. the 4th circuit breaker 4QF shutting-brake control

J-1 prepared auto restart 1 the 4th circuit breaker 4QF shutting-brake control one

(1) when the first circuit breaker 1QF tripping operation control command has sent and checked the first circuit breaker 1QF indeed tripping, or when the second transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state be in and close a floodgate after position and the first circuit breaker 1QF is in open position (namely the first circuit breaker 1QF position is not corresponding);

(2) 4Tcd1 charging delay time arrives;

(3) the 3rd tranformer protections do not have action;

When above condition meets, after time delay (delay time is tH4), export pulse control signal to the 4th circuit breaker 4QF shutting-brake control loop, the 4th circuit breaker 4QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously.

J-2 prepared auto restart 1 the 4th circuit breaker 4QF shutting-brake control two

(2) 4Tcd1 charging delay time arrives;

(3) the 3rd tranformer protections do not have action;

When above condition meets, after time delay (delay time is tH4), export pulse control signal to the 4th circuit breaker 4QF shutting-brake control loop, the 4th circuit breaker 4QF breaker closing, export in-put of spare power supply feed motion signal simultaneously.

J-3 prepared auto restart 2 the 4th circuit breaker 1QF shutting-brake control one

(1) when the first circuit breaker 1QF tripping operation control command has sent and checked the first circuit breaker 1QF indeed tripping, or when the 3rd transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state be in and close a floodgate after position and the first circuit breaker 1QF is in open position (namely the first circuit breaker 1QF position is not corresponding);

(2) 4Tcd2 charging delay time arrives;

(3) the 3rd tranformer protections do not have action;

J-4 prepared auto restart 2 first circuit breaker 1QF shutting-brake control two

(1) when the 3rd transformer side voltage is less than combined floodgate checkout voltage definite value (when combined floodgate checkout voltage control word HZJY is 1), simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state be in and close a floodgate after position and the 3rd circuit breaker 3QF is in open position (namely the 3rd circuit breaker 3QF position is not corresponding);

(2) 4Tcd2 charging delay time arrives;

(3) the 3rd tranformer protections do not have action;

K. abnormal signal controls

K-1 prepared auto restart 1 abnormal signal controls

(1) when the first circuit breaker 1QF or the hand control switch (1KK or 2KK or 4KK) of the second circuit breaker 2QF or the 4th circuit breaker 4QF or the two-position relay of its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the second circuit breaker 2QF or the 4th circuit breaker 4QF is in open position (namely not corresponding), or first transformer side voltage be less than set point or the second transformer side voltage is less than set point (combined floodgate checkout voltage control word puts 1), after certain time-delay, send abnormal signal;

(2) when the first circuit breaker 1QF does not send tripping operation control command, and the first circuit breaker 1QF source current 1I1 be less than trip inspection no flow setpoint or the first circuit breaker 1QF supply voltage 1U1 be less than trip inspection definite value with no pressure and the two-position relay 1KKJ of the first circuit breaker 1QF Non-follow control circuit breaker 1KK or its deciliter state be in close a floodgate after position time, after certain time-delay, send abnormal signal;

(3) when the 4th circuit breaker 4QF does not send tripping operation control command, and the 4th circuit breaker 4QF source current 4I1 be less than trip inspection no flow setpoint or the 4th circuit breaker 4QF supply voltage 2U1 be less than trip inspection definite value with no pressure and the two-position relay 4KKJ of the 4th circuit breaker 4QF Non-follow control circuit breaker 4KK or its deciliter state be in close a floodgate after position time, after certain time-delay, send abnormal signal.

K-2 prepared auto restart 2 abnormal signal controls

(1) when the first circuit breaker 1QF or the hand control switch (1KK or 3KK or 4KK) of the 3rd circuit breaker 2QF or the 4th circuit breaker 4QF or the two-position relay of its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF is in open position (namely not corresponding), or first transformer side voltage be less than set point or the 3rd transformer side voltage is less than set point (combined floodgate checkout voltage control word puts 1), after certain time-delay, send abnormal signal;

The method that microcomputer control standby power of the present invention drops into automatically meets the general principle of alternate power autocast completely, and compared with the method used in existing microcomputer type automatic throw-in equipment of emergency power supply, tool has the following advantages:

1. the prepared auto restart control logic acting in conjunction that have employed two internal bridges can complete equally and adapt to the technical scheme of the automatic throw-in equipment of emergency power supply once expanding interior bridge main electrical scheme in the electric substation of applied transmission and distribution networks.

2. have employed and complete charging and discharging circuit control program by back-up breaker, when there is combined floodgate equally, check advantage easily with no pressure;

3. the same uncorresponding start-up loop adopting similar reclosing, as prepared auto restart starting-up later time, there is clear and definite, simple, the reliable advantage of operating criterion, and circuit breaker jump can be corrected, the correction loop of circuit breaker jump of need not separately setting up defences, thus solve each circuit breaker jump problem, particularly bridge circuit breaker jump problem;

4. check scheme with no pressure (also can adopt during combined floodgate and check the scheme same period, only need go out add this function in this logic) when have employed combined floodgate, when solving when the electric substation run and have local power factory, prevent the problem of non-Switching Synchronization;

5. have employed the scheme that the corresponding transformer breaker of which platform tranformer protection action blocking closes a floodgate, prevent from causing full institute of this electric substation dead electricity.

Accompanying drawing explanation

Bridge primary connection circuit figure in Tu1Shi electric substation expands;

Fig. 2 the inventive method embodiment is for expanding bridge prepared auto restart 1 theory diagram in the decoupling zero of interior bridge prepared auto restart;

Fig. 3 the inventive method embodiment is for expanding bridge prepared auto restart 2 theory diagram in the decoupling zero of interior bridge prepared auto restart.

Control word in Fig. 2, Fig. 3 is described as follows:

Control word title	When control word is 1	When control word is 0
			Trip inspection has pressure-controlled word FZJY	Trip inspection has compression functions to drop into	Trip inspection has compression functions to exit
Combined floodgate inspection has pressure-controlled word HZJY	Combined floodgate checkout voltage function drops into	Combined floodgate checkout voltage function exits

In Fig. 2, Fig. 3, letter is described as follows:

<1U1-represents that the first circuit breaker 1QF supply voltage is less than trip inspection definite value with no pressure, and namely the first circuit breaker 1QF power supply is with no pressure;

<4U1-represents that the 4th circuit breaker 4QF supply voltage is less than trip inspection definite value with no pressure, and namely the 4th circuit breaker 4QF power supply is with no pressure;

>1U1-represents that the first circuit breaker 1QF supply voltage is greater than trip inspection and has compression set value, and namely the first circuit breaker 1QF power supply has pressure;

>4U1-represents that the 4th circuit breaker 4QF supply voltage is greater than trip inspection and has compression set value, and namely the 4th circuit breaker 4QF power supply has pressure;

<1I1-represents that the first circuit breaker 1QF source current is less than trip inspection no flow setpoint, and namely the first circuit breaker 1QF power supply is without stream;

<4I1-represents that the 4th circuit breaker 4QF source current is less than trip inspection no flow setpoint, and namely the 4th circuit breaker 4QF power supply is without stream;

<1U2-represents that the first high voltage side of transformer or low-pressure side bus voltage are less than combined floodgate checkout voltage definite value;

<2U2-represents that the second high voltage side of transformer or low-pressure side bus voltage are less than combined floodgate checkout voltage definite value;

<3U2-represents that the 3rd high voltage side of transformer or low-pressure side bus voltage are less than combined floodgate checkout voltage definite value;

1KKJ-represents that the two-position relay of the first circuit breaker 1QF Non-follow control circuit breaker 1KK or its deciliter state is in rear position of closing a floodgate;

2KKJ-represents that the two-position relay of the second circuit breaker 2QF Non-follow control circuit breaker 2KK or its deciliter state is in rear position of closing a floodgate;

3KKJ-represents that the two-position relay of the 3rd circuit breaker 3QF Non-follow control circuit breaker 3KK or its deciliter state is in rear position of closing a floodgate;

4KKJ-represents that the two-position relay of the 4th circuit breaker 4QF Non-follow control circuit breaker 4KK or its deciliter state is in rear position of closing a floodgate;

1TWJ-represents that the first circuit breaker 1QF is in open position;

2TWJ-represents that the second circuit breaker 2QF is in open position;

3TWJ-represents that the 3rd circuit breaker 3QF is in open position;

4TWJ-represents that the 4th circuit breaker 4QF is in open position;

1BCJ-represents the first tranformer protection action;

2BCJ-represents the second tranformer protection action;

3BCJ-represents the 3rd main transformer protection action;

In Fig. 2,3, symbol description is as follows:

-presentation logic and relation, when namely initial conditions all meets, export effectively;

-presentation logic or relation, namely initial conditions is arbitrary when meeting, and exports effectively;

-represent the delay tripping time;

-represent time delay 20 seconds;

-represent charging delay time;

-represent the time-delay closing time;

-represent that 200ms pulse exports;

-represent the first circuit breaker 1QF trip(ping) circuit;

-represent the second circuit breaker 2QF trip(ping) circuit;

-represent the 3rd circuit breaker 3QF trip(ping) circuit;

-represent the 4th circuit breaker 4QF trip(ping) circuit;

-represent the first circuit breaker 1QF closing circuit;

-represent the second circuit breaker 2QF closing circuit;

-represent the 3rd circuit breaker 3QF closing circuit;

-represent the 4th circuit breaker 4QF closing circuit

-represent prepared auto restart trip operation signal;

-represent prepared auto restart feed motion signal;

-be expressed as contrary with input signal;

-represent abnormal signal;

expanded inter-bridge connection prepared auto restart specific embodiments

As shown in Figure 1, electric substation's primary connection circuit in the transmission and distribution networks that method of the present invention is applied is the expanded inter-bridge connection of the dual power supply of standard, include two-way power supply, two-way power supply is serially connected with respectively the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF, also connect three transformers (i.e. the first transformer, the second transformer and the 3rd transformer) respectively, the line side of electric power incoming line and high voltage side of transformer or low-pressure side are all connected to voltage transformer.I.e. two-way electric power incoming line, three step-down transformers, four circuit breakers.1BCJ is the first tranformer protection, 2BCJ is the second tranformer protection, 3BCJ is the 3rd tranformer protection; <1UT2 is the first transformer side checkout voltage, and <2UT2 is the second transformer side checkout voltage, and <3UT2 is the 3rd transformer side checkout voltage.Provide the embodiment of the inventive method below:

(i), operational mode 1: the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF run, the 4th circuit breaker 4QF stand-by heat

1 preparatory stage

Prepared auto restart 1: the first circuit breaker 1QF, the second circuit breaker 2QF are combined floodgate running status, 1KK, 2KK(of its corresponding operating circuit breaker or two-position relay 1KKJ, 2KKJ) remember for after combined floodgate, 4th circuit breaker 4QF is stand-by heat, the 4KK(of its corresponding operating circuit breaker or two-position relay 4KKJ) remember for after separating brake.Because 1KK, 2KK are state after closing a floodgate, so the first circuit breaker 1QF trip(ping) circuit is open, and the first circuit breaker 1QF, the second circuit breaker 2QF closing circuit locking; Open 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd1, then charges when the 4th circuit breaker 4QF meets charge condition, then thoroughly discharges immediately when not satisfying condition, again charge after meeting charge condition simultaneously.

Prepared auto restart 2: the first circuit breaker 1QF, the 3rd circuit breaker 3QF are combined floodgate running status, 1KK, 3KK(of its corresponding operating circuit breaker or two-position relay 1KKJ, 3KKJ) remember for after combined floodgate, 4th circuit breaker 4QF is stand-by heat, the 4KK(of its corresponding operating circuit breaker or two-position relay 4KKJ) remember for after separating brake.Because 1KK, 3KK are state after closing a floodgate, so the first circuit breaker 1QF trip(ping) circuit is open, and the first circuit breaker 1QF, the 3rd circuit breaker 3QF closing circuit locking; Open 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd2, then charges when the 4th circuit breaker 4QF meets charge condition, then thoroughly discharges immediately when not satisfying condition, again charge after meeting charge condition simultaneously.

2 course of action

2.1 inlet wire 1 power loss

(1) prepared auto restart 1: because inlet wire 1 power loss, through the first circuit breaker 1QF checkout voltage with after having pressure without stream, offside the 4th circuit breaker 4QF power supply, after time delay tT1, the first circuit breaker 1QF trips.When first circuit breaker 1QF trip control command sent first circuit breaker 1QF trip while and check the first circuit breaker 1QF indeed tripping, after first circuit breaker 1QF trips, 1TWJ closes expression first circuit breaker 1QF and is in trip position, and 1KKJ is for closing a floodgate rear state, thus the first circuit breaker 1QF position is produced not corresponding, after the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd1 charging complete, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

Prepared auto restart 2: because inlet wire 1 power loss, through the first circuit breaker 1QF checkout voltage with after having pressure without stream, offside the 4th circuit breaker 4QF power supply, after time delay tT1, the first circuit breaker 1QF trips.When first circuit breaker 1QF trip control command sent first circuit breaker 1QF trip while and check the first circuit breaker 1QF indeed tripping, after first circuit breaker 1QF trips, 1TWJ closes expression first circuit breaker 1QF and is in trip position, and 1KKJ is for closing a floodgate rear state, thus the first circuit breaker 1QF position is produced not corresponding, after the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd2 charging complete, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the first transformer or the second tranformer protection action; because protection act locking have employed blocking; 4th circuit breaker 4QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 4th circuit breaker 4QF still can close a floodgate in action.If power loss is caused by the 3rd tranformer protection action, the 4th circuit breaker 4QF charge circuit discharges immediately due to the 3rd tranformer protection action, and the 4th circuit breaker 4QF closing circuit is blocked simultaneously, therefore the 4th circuit breaker 4QF can not close a floodgate.

Prepared auto restart 2: if power loss is caused by the first transformer or the second tranformer protection action, because protection act locking have employed blocking, 4th circuit breaker 4QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 4th circuit breaker 4QF still can close a floodgate in action; If power loss is caused by the 3rd tranformer protection action, the 4th circuit breaker 4QF charge circuit discharges immediately due to the 3rd tranformer protection action, and the 4th circuit breaker 4QF closing circuit is blocked simultaneously, therefore the 4th circuit breaker 4QF can not close a floodgate.

(3) prepared auto restart 1: if power loss causes because of the first circuit breaker 1QF or the second circuit breaker 2QF jump, then 1TWJ or 2TWJ can close, and 1KKJ or 2KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF or the second circuit breaker 2QF circuit breaker position not corresponding, after the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd1 charging complete, on inspection the first transformer or the second transformer with no pressure after, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

Prepared auto restart 2: if power loss causes because of the first circuit breaker 1QF or the 3rd circuit breaker 3QF jump, then 1TWJ or 3TWJ can close, and 1KKJ or 3KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF or the 3rd circuit breaker 3QF circuit breaker position not corresponding, after the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd2 charging complete, on inspection the first transformer or the 3rd transformer with no pressure after, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

(5) if manually pull open the first circuit breaker 1QF or the second circuit breaker 2QF or the 3rd circuit breaker 3QF, then 1KKJ or 2KKJ or 3KKJ becomes state after separating brake from original rear state of closing a floodgate, the circuit breaker position of the first circuit breaker 1QF or the second circuit breaker 2QF or the 3rd circuit breaker 3QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the 4th circuit breaker 4QF; Therefore prepared auto restart 2: the closing circuit that can not start the 4th circuit breaker 4QF.

(ii), operational mode 2: the first circuit breaker 1QF, the second circuit breaker 2QF, the 4th circuit breaker 4QF run, the 3rd circuit breaker 3QF stand-by heat

1 preparatory stage

Prepared auto restart 1: the first circuit breaker 1QF, the second circuit breaker 2QF, the 4th circuit breaker 4QF are combined floodgate running status, 1KK, 2KK, 4KK(of its corresponding operating circuit breaker or two-position relay 1KKJ, 2KKJ, 4KKJ) remember for after combined floodgate.Because 1KK, 2KK, 4KK are state after closing a floodgate, so the first circuit breaker 1QF, the second circuit breaker 2QF, the 4th circuit breaker 4QF trip(ping) circuit are open, and closing circuit locking, so the not opening of prepared auto restart 1 closing circuit.

Prepared auto restart 2: the first circuit breaker 1QF, the 4th circuit breaker 4QF are combined floodgate running status, 1KK, 4KK(of its corresponding operating circuit breaker or two-position relay 1KKJ, 4KKJ) remember for after combined floodgate, 3rd circuit breaker 3QF is stand-by heat, the 3KK(of its corresponding operating circuit breaker or two-position relay 3KKJ) remember for after separating brake.Because 1KK, 4KK are state after closing a floodgate, so the first circuit breaker 1QF, the 4th circuit breaker 4QF trip(ping) circuit are open, and closing circuit locking; Open 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1, then charges when the 3rd circuit breaker 3QF meets charge condition, then thoroughly discharges immediately when not satisfying condition, again charge after meeting charge condition simultaneously.

2 course of action

2.1 inlet wire 1 power loss

(1) prepared auto restart 2: because inlet wire 1 power loss, through the first circuit breaker 1QF checkout voltage with after having pressure without stream, offside the 4th circuit breaker 4QF power supply, after time delay tT1, the first circuit breaker 1QF trips.When first circuit breaker 1QF trip control command sent first circuit breaker 1QF trip while and check the first circuit breaker 1QF indeed tripping, after first circuit breaker 1QF trips, 1TWJ closes expression first circuit breaker 1QF and is in trip position, and 1KKJ is for closing a floodgate rear state, thus the first circuit breaker 1QF circuit breaker position is produced not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(2) prepared auto restart 2: if power loss is caused by the first tranformer protection action; because protection act locking have employed blocking; 3rd circuit breaker 3QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 3rd circuit breaker 3QF still can close a floodgate in action.If power loss is caused by the second tranformer protection action, the 3rd circuit breaker 3QF charge circuit discharges immediately due to the second tranformer protection action, and the 3rd circuit breaker 3QF closing circuit is blocked simultaneously, therefore the 3rd circuit breaker 3QF can not close a floodgate.

(3) prepared auto restart 2: if power loss causes because of the first circuit breaker 1QF jump, then 1TWJ can close, and 1KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF position is not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, on inspection the first transformer with no pressure after, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

If power loss causes because of the second circuit breaker 2QF jump, then 2TWJ can close, and 2KKJ is still for closing a floodgate rear state, same generation second circuit breaker 2QF circuit breaker position is not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, on inspection the second transformer with no pressure after, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(4) if manually pull open the first circuit breaker 1QF or the second circuit breaker 2QF, then 1KKJ or 2KKJ becomes state after separating brake from original rear state of closing a floodgate, the circuit breaker position of the first circuit breaker 1QF or the second circuit breaker 2QF is not corresponding is false, therefore prepared auto restart 2: the closing circuit that can not start the 3rd circuit breaker 3QF.

2.2 inlet wire 2 power loss

(1) prepared auto restart 2: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, after time delay tT4, the 4th circuit breaker 4QF trips.When the 4th circuit breaker 4QF trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(2) prepared auto restart 2: if power loss is caused by the 3rd tranformer protection action; because protection act locking have employed blocking; 3rd circuit breaker 3QF charge circuit discharges immediately due to the 3rd tranformer protection action; 3rd circuit breaker 3QF closing circuit is blocked simultaneously, therefore the 3rd circuit breaker 3QF can not close a floodgate.

(3) prepared auto restart 2: if power loss causes because of the 4th circuit breaker 4QF jump, then 4TWJ can close, and 4KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF circuit breaker position is not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, on inspection the 3rd transformer with no pressure after, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(4) if manually pull open the 4th circuit breaker 4QF, then 4KKJ becomes state after separating brake from original rear state of closing a floodgate, and the circuit breaker position of the 4th circuit breaker 4QF is not corresponding is false, prepared auto restart 2: the closing circuit that can not start the 3rd circuit breaker 3QF.

(iii), operational mode 3: the first circuit breaker 1QF, the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF run, the second circuit breaker 2QF stand-by heat

1 preparatory stage

Prepared auto restart 1: the first circuit breaker 1QF, the 4th circuit breaker 4QF are combined floodgate running status, 1KK, 4KK(of its corresponding operating circuit breaker or two-position relay 1KKJ, 4KKJ) remember for after combined floodgate, second circuit breaker 2QF is stand-by heat, the 2KK(of its corresponding operating circuit breaker or two-position relay 2KKJ) remember for after separating brake.Because 1KK, 4KK are state after closing a floodgate, so the first circuit breaker 1QF, the 4th circuit breaker 4QF trip(ping) circuit are open, and closing circuit locking; Open second circuit breaker 2QF combined floodgate charge circuit 2Tcd1, then charges when the second circuit breaker 2QF meets charge condition, then thoroughly discharges immediately when not satisfying condition, again charge after meeting charge condition simultaneously.

Prepared auto restart 2: the first circuit breaker 1QF, the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF are combined floodgate running status, 1KK, 3KK, 4KK(of its corresponding operating circuit breaker or two-position relay 1KKJ, 3KKJ, 4KKJ) remember for after combined floodgate.Because 1KK, 3KK, 4KK are state after closing a floodgate, so the first circuit breaker 1QF, the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF trip(ping) circuit are open, and closing circuit locking, i.e. the 2-in-1 lock loop not opening of prepared auto restart.

2 course of action

2.1 inlet wire 1 power loss

(1) prepared auto restart 1: because inlet wire 1 power loss, through the first circuit breaker 1QF checkout voltage with after having pressure without stream, offside the 4th circuit breaker 4QF power supply, after time delay tT1, the first circuit breaker 1QF trips.When first circuit breaker 1QF trip control command sent first circuit breaker 1QF trip while and check the first circuit breaker 1QF indeed tripping, after first circuit breaker 1QF trips, 1TWJ closes expression first circuit breaker 1QF and is in trip position, and 1KKJ is for closing a floodgate rear state, thus the first circuit breaker 1QF position is produced not corresponding, after the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the first tranformer protection action; second circuit breaker 2QF charge circuit discharges immediately due to the first tranformer protection action; second circuit breaker 2QF closing circuit is blocked simultaneously, therefore the second circuit breaker 2QF can not close a floodgate.

(3) prepared auto restart 1: if power loss causes because of the first circuit breaker 1QF jump, then 1TWJ can close, and 1KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF position is not corresponding, after the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, on inspection the first transformer with no pressure after, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit.

(4) if manually pull open the first circuit breaker 1QF, then 1KKJ becomes state after separating brake from original rear state of closing a floodgate, and the position of the first circuit breaker 1QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the second circuit breaker 2QF.

2.2 inlet wire 2 power loss

(1) prepared auto restart 1: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, trip after time delay tT4 the 4th circuit breaker 4QF.When the 4th circuit breaker 4QF circuit breaker trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the 3rd tranformer protection action; because protection act locking have employed blocking; second circuit breaker 2QF combined floodgate charge circuit can not be discharged and be blocked, therefore the second circuit breaker 2QF still can close a floodgate in action.If power loss is caused by the second tranformer protection action; because protection act locking have employed blocking; second circuit breaker 2QF charge circuit discharges immediately due to the second tranformer protection action; second circuit breaker 2QF closing circuit is blocked simultaneously, therefore the second circuit breaker 2QF can not close a floodgate.

(3) prepared auto restart 1: if power loss causes because of the 4th circuit breaker 4QF jump, then 4TWJ can close, and 4KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF position is not corresponding, after the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, on inspection the second transformer with no pressure after, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit.

If power loss causes because of the 3rd circuit breaker 3QF jump, then 3TWJ can close, and 3KKJ is still for closing a floodgate rear state, same generation the 3rd circuit breaker 3QF position is not corresponding, after the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, on inspection the second transformer with no pressure after, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit.

(4) prepared auto restart 1: if manually pull open the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF, then 4KKJ or 3KKJ becomes state after separating brake from original rear state of closing a floodgate, 4th circuit breaker 4QF or the 3rd circuit breaker 3QF circuit breaker position is not corresponding is false, therefore the closing circuit of the second circuit breaker 2QF can not be started.

(iv), operational mode 4: the second circuit breaker 2QF, the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF run, the first circuit breaker 1QF stand-by heat

1 preparatory stage

Prepared auto restart 1: the second circuit breaker 2QF, the 4th circuit breaker 4QF are combined floodgate running status, 2KK, 4KK(of its corresponding operating circuit breaker or two-position relay 2KKJ, 4KKJ) remember for after combined floodgate, first circuit breaker 1QF is stand-by heat, the 1KK(of its corresponding operating circuit breaker or two-position relay 1KKJ) remember for after separating brake.Because 2KK, 4KK are state after closing a floodgate, so the second circuit breaker 2QF, the 4th circuit breaker 4QF trip(ping) circuit are open, and closing circuit locking; Open first circuit breaker 1QF combined floodgate charge circuit 1Tcd1, then charges when the first circuit breaker 1QF meets charge condition, then thoroughly discharges immediately when not satisfying condition, again charge after meeting charge condition simultaneously.

Prepared auto restart 2: the three circuit breaker 3QF, the 4th circuit breaker 4QF are combined floodgate running status, 3KK, 4KK(of its corresponding operating circuit breaker or two-position relay 3KKJ, 4KKJ) remember for after combined floodgate, first circuit breaker 1QF is stand-by heat, the 1KK(of its corresponding operating circuit breaker or two-position relay 1KKJ) remember for after separating brake.Because 3KK, 4KK are state after closing a floodgate, so the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF trip(ping) circuit are open, and closing circuit locking; Open first circuit breaker 1QF combined floodgate charge circuit 1Tcd2, then charges when the first circuit breaker 1QF meets charge condition, then thoroughly discharges immediately when not satisfying condition, again charge after meeting charge condition simultaneously.

2 course of action

2.1 inlet wire 2 power loss

(1) prepared auto restart 1: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, after time delay tT4, the 4th circuit breaker 4QF trips.When the 4th circuit breaker 4QF trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd1 charging complete, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit.

Prepared auto restart 2: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, after time delay tT4, the 4th circuit breaker 4QF trips.When the 4th circuit breaker 4QF trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd2 charging complete, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the first transformer action, because protection act locking have employed blocking, the first circuit breaker 1QF combined floodgate charge circuit can be discharged and be blocked, therefore the first circuit breaker 1QF can not close a floodgate in action; If power loss is caused by the second tranformer protection or the 3rd tranformer protection action; because protection act locking have employed blocking; first circuit breaker 1QF combined floodgate charge circuit can not be discharged and be blocked, therefore the first circuit breaker 1QF still can close a floodgate in action.

Prepared auto restart 2: if power loss is caused by the second tranformer protection or the 3rd tranformer protection action; because protection act locking have employed blocking; first circuit breaker 1QF combined floodgate charge circuit can not be discharged and be blocked, therefore the first circuit breaker 1QF still can close a floodgate in action.

(3) prepared auto restart 1: if power loss causes because of the 4th circuit breaker 4QF or the second circuit breaker 2QF jump, then 4TWJ or 2TWJ can close, and 4KKJ or 2KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF or the second circuit breaker 2QF circuit breaker position not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd1 charging complete, on inspection the first transformer with no pressure after, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit.

Prepared auto restart 2: if power loss causes because of the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF jump, then 4TWJ or 3TWJ can close, and 4KKJ or 3KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF circuit breaker position not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd2 charging complete, on inspection the first transformer with no pressure after, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit.

(4) if manually pull open the 4th circuit breaker 4QF or the second circuit breaker 2QF or the 3rd circuit breaker 3QF, then 4KKJ or 2KKJ or 3KKJ becomes state after separating brake from original rear state of closing a floodgate, the circuit breaker position of the 4th circuit breaker 4QF or the second circuit breaker 2QF or the 3rd circuit breaker 3QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the first circuit breaker 1QF; Prepared auto restart 2: the closing circuit that can not start the first circuit breaker 1QF.

(v), operational mode 5: the first circuit breaker 1QF, the second circuit breaker 2QF run, the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF stand-by heat

1 preparatory stage

Prepared auto restart 2: the first circuit breaker 1QF is combined floodgate running status, the 1KK(of its corresponding operating circuit breaker or two-position relay 1KKJ) remember for after combined floodgate, 3rd circuit breaker 3QF, the 4th circuit breaker 4QF are stand-by heat, 3KK, 4KK(of its corresponding operating circuit breaker or two-position relay 3KKJ, 4KKJ) remember for after separating brake.Because 1KK is rear state of closing a floodgate, so the first circuit breaker 1QF trip(ping) circuit is open, and closing circuit locking; Open 3rd circuit breaker 3QF, the 4th circuit breaker 4QF combined floodgate charge circuit 3Tcd1,4Tcd2 simultaneously, when the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF then charge when meeting charge condition, then thoroughly discharge immediately when not satisfying condition, again charge after meeting charge condition.

2 course of action

2.1 inlet wire 1 power loss

Prepared auto restart 2: because inlet wire 1 power loss, through the first circuit breaker 1QF checkout voltage with after having pressure without stream, offside the 4th circuit breaker 4QF power supply, after time delay tT1, the first circuit breaker 1QF trips.When first circuit breaker 1QF trip control command sent first circuit breaker 1QF trip while and check the first circuit breaker 1QF circuit breaker indeed tripping, after first circuit breaker 1QF trips, 1TWJ closes expression first circuit breaker 1QF and is in trip position, and 1KKJ is for closing a floodgate rear state, thus the first circuit breaker 1QF position is produced not corresponding, at the 3rd circuit breaker 3QF, 4th circuit breaker 4QF combined floodgate charge circuit 3Tcd1, after 4Tcd2 charging complete, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the first tranformer protection or the second tranformer protection action; because protection act locking have employed blocking; 4th circuit breaker 4QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 4th circuit breaker 4QF still can close a floodgate in action.

Prepared auto restart 2: if power loss is caused by the first tranformer protection action; because protection act locking have employed blocking; 3rd circuit breaker 3QF and the 4th circuit breaker 4QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF still can close a floodgate in action.If power loss is caused by the second tranformer protection action, because protection act locking have employed blocking, the 4th circuit breaker 4QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 4th circuit breaker 4QF still can close a floodgate in action; And the 3rd circuit breaker 3QF combined floodgate charge circuit can be discharged and be blocked, therefore the 3rd circuit breaker 3QF can not close a floodgate in action.

(3) prepared auto restart 1: if power loss causes because of the first circuit breaker 1QF or the second circuit breaker 2QF circuit breaker jump, then 1TWJ or 2TWJ can close, and 1KKJ or 21KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF or the second circuit breaker 2QF circuit breaker position not corresponding, after the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd1 charging complete, on inspection the second transformer with no pressure after, time delay tT4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit

Prepared auto restart 2: if power loss causes because of the first circuit breaker 1QF jump, then 1TWJ can close, and 1KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF circuit breaker position is not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, on inspection the first transformer with no pressure after, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit; After the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd2 charging complete, on inspection the 3rd transformer with no pressure after, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

(4) if manually pull open the first circuit breaker 1QF or the second circuit breaker 2QF, then 1KKJ or 2KKJ becomes state after separating brake from original rear state of closing a floodgate, the circuit breaker position of the first circuit breaker 1QF or the second circuit breaker 2QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the 4th circuit breaker 4QF; Therefore prepared auto restart 2: the closing circuit that can not start the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF.

(vi), operational mode 6: the first circuit breaker 1QF, the 4th circuit breaker 4QF run, the second circuit breaker 2QF, the 3rd circuit breaker 3QF stand-by heat

1 preparatory stage

2 course of action

2.1 inlet wire 1 power loss

Prepared auto restart 2: because inlet wire 1 power loss, through the first circuit breaker 1QF checkout voltage with after having pressure without stream, offside the 4th circuit breaker 4QF power supply, trip after time delay tH1 the first circuit breaker 1QF.When first circuit breaker 1QF trip control command sent first circuit breaker 1QF trip while and check the first circuit breaker 1QF indeed tripping, after first circuit breaker 1QF trips, 1TWJ closes expression first circuit breaker 1QF and is in trip position, and 1KKJ is for closing a floodgate rear state, thus the first circuit breaker 1QF position is produced not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

Prepared auto restart 2: if power loss is caused by the first tranformer protection action, because protection act locking have employed blocking, the 3rd circuit breaker 3QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 3rd circuit breaker 3QF still can close a floodgate in action.

Prepared auto restart 2: if power loss causes because of the first circuit breaker 1QF jump, then 1TWJ can close, and 1KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF position is not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, on inspection the first transformer with no pressure after, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(4) if manually pull open the first circuit breaker 1QF, then 1KKJ becomes state after separating brake from original rear state of closing a floodgate, and the position of the first circuit breaker 1QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the second circuit breaker 2QF; Therefore prepared auto restart 2: the closing circuit that can not start the 3rd circuit breaker 3QF.

2.2 inlet wire 2 power loss

(1) prepared auto restart 1: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, after time delay tT4, the 4th circuit breaker 4QF trips.When the 4th circuit breaker 4QF trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit.

Prepared auto restart 2: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, after time delay tH4, the 4th circuit breaker 4QF trips.When the 4th circuit breaker 4QF trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the 3rd tranformer protection action; because protection act locking have employed blocking; second circuit breaker 2QF combined floodgate charge circuit can not be discharged and be blocked, therefore the second circuit breaker 2QF still can close a floodgate in action.

Prepared auto restart 2: if power loss is caused by the 3rd tranformer protection action; because protection act locking have employed blocking; 3rd circuit breaker 3QF charge circuit discharges immediately due to the 3rd tranformer protection action; 3rd circuit breaker 3QF closing circuit is blocked simultaneously, therefore the 3rd circuit breaker 3QF can not close a floodgate.

Prepared auto restart 2: if power loss causes because of the 4th circuit breaker 4QF jump, then 4TWJ can close, and 4KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF position is not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, on inspection the 3rd transformer with no pressure after, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(4) if manually pull open the 4th circuit breaker 4QF, then 4KKJ becomes state after separating brake from original rear state of closing a floodgate, and the position of the 4th circuit breaker 4QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the second circuit breaker 2QF; Prepared auto restart 2: the closing circuit that can not start the 3rd circuit breaker 3QF.

(vii), operational mode 7: the three circuit breaker 3QF, the 4th circuit breaker 4QF run, the first circuit breaker 1QF, the second circuit breaker 2QF stand-by heat

1 preparatory stage

Prepared auto restart 1: the four circuit breaker 4QF is combined floodgate running status, the 4KK(of its corresponding operating circuit breaker or two-position relay 4KKJ) remember for after combined floodgate, first circuit breaker 1QF, the second circuit breaker 2QF are stand-by heat, 1KK, 2KK(of its corresponding operating circuit breaker or two-position relay 1KKJ, 2KKJ) remember for after separating brake.Because 4KK is rear state of closing a floodgate, so the 4th circuit breaker 4QF trip(ping) circuit is open, and closing circuit locking; Open first circuit breaker 1QF, second circuit breaker 2QF combined floodgate charge circuit 1Tcd1,2Tcd1 simultaneously, when the first circuit breaker 1QF, the second circuit breaker 2QF then charge when meeting charge condition, then thoroughly discharge immediately when not satisfying condition, again charge after meeting charge condition.

Prepared auto restart 2: the three circuit breaker 3QF, the 4th circuit breaker 4QF are combined floodgate running status, 3KK, 4KK(of its corresponding operating circuit breaker or two-position relay 3KKJ, 4KKJ) remember for after combined floodgate, first circuit breaker 1QF is stand-by heat, the 1KK(of its corresponding operating circuit breaker or two-position relay 1KKJ) remember for after separating brake.Because 3KK, 4KK are state after closing a floodgate, so the 4th circuit breaker 4QF trip(ping) circuit is open, and the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF closing circuit locking; Open first circuit breaker 1QF combined floodgate charge circuit 1Tcd2, then charges when the first circuit breaker 1QF meets charge condition, then thoroughly discharges immediately when not satisfying condition, again charge after meeting charge condition simultaneously.

2 course of action

2.1 inlet wire 2 power loss

(1) prepared auto restart 1: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, after time delay tT4, the 4th circuit breaker 4QF trips.When the 4th circuit breaker 4QF trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd1 charging complete, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit; After the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit.

Prepared auto restart 2: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, after time delay tT4, the 4th circuit breaker 4QF trips.When the 4th circuit breaker 4QF trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd1 charging complete, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the 3rd tranformer protection action; because protection act locking have employed blocking; first circuit breaker 1QF and the second circuit breaker 2QF combined floodgate charge circuit can not be discharged and be blocked, therefore the first circuit breaker 1QF and the second circuit breaker 2QF still can close a floodgate in action.If power loss is caused by the second tranformer protection action, because protection act locking have employed blocking, the first circuit breaker 1QF combined floodgate charge circuit can not be discharged and be blocked, therefore the first circuit breaker 1QF still can close a floodgate in action; And the second circuit breaker 2QF combined floodgate charge circuit can be discharged and be blocked, therefore the second circuit breaker 2QF can not close a floodgate in action.

Prepared auto restart 2: if power loss is caused by the 3rd tranformer protection action, because protection act locking have employed blocking, the first circuit breaker 1QF combined floodgate charge circuit can not be discharged and be blocked, therefore the first circuit breaker 1QF still can close a floodgate in action.If power loss is caused by the second tranformer protection action, because protection act locking have employed blocking, the first circuit breaker 1QF combined floodgate charge circuit can not be discharged and be blocked, therefore the first circuit breaker 1QF still can close a floodgate in action.

(3) prepared auto restart 1: if power loss causes because of the 4th circuit breaker 4QF jump, then 4TWJ can close, and 4KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF position is not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd1 charging complete, on inspection the first transformer with no pressure after, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit; After the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, on inspection the second transformer with no pressure after, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit.

Prepared auto restart 2: if power loss causes because of the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF jump, then 4TWJ or 3TWJ can close, and 4KKJ or 3KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF circuit breaker position not corresponding, then 4TWJ or 3TWJ can close, and 4KKJ or 3KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF circuit breaker position not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd2 charging complete, on inspection the first transformer with no pressure after, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit.

(4) if manually pull open the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF, then 4KKJ or 3KKJ becomes state after separating brake from original rear state of closing a floodgate, the circuit breaker position of the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the first circuit breaker 1QF, the second circuit breaker 2QF; Prepared auto restart 2: the closing circuit that can not start the first circuit breaker 1QF.

(viii), operational mode 8: the first circuit breaker 1QF runs, the second circuit breaker 2QF, the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF stand-by heat

1 preparatory stage

Prepared auto restart 1: the first circuit breaker 1QF is combined floodgate running status, the 1KK(of its corresponding operating circuit breaker or two-position relay 1KKJ) remember for after combined floodgate, second circuit breaker 2QF, the 4th circuit breaker 4QF are stand-by heat, 2KK, 4KK(of its corresponding operating circuit breaker or two-position relay 2KKJ, 4KKJ) remember for after separating brake.Because 1KK is rear state of closing a floodgate, so the first circuit breaker 1QF trip(ping) circuit is open, and closing circuit locking; Open second circuit breaker 2QF, the 4th circuit breaker 4QF combined floodgate charge circuit 2Tcd1,4Tcd1 simultaneously, when the second circuit breaker 2QF, the 4th circuit breaker 4QF then charge when meeting charge condition, then thoroughly discharge immediately when not satisfying condition, again charge after meeting charge condition.

2 course of action

2.1 inlet wire 1 power loss

(1) prepared auto restart 1: because inlet wire 1 power loss, through the first circuit breaker 1QF checkout voltage with after having pressure without stream, offside the 4th circuit breaker 4QF power supply, trip after time delay tT1 the first circuit breaker 1QF.When first circuit breaker 1QF trip control command sent first circuit breaker 1QF trip while and check the first circuit breaker 1QF indeed tripping, after first circuit breaker 1QF trips, 1TWJ closes expression first circuit breaker 1QF and is in trip position, and 1KKJ is for closing a floodgate rear state, thus the first circuit breaker 1QF position is produced not corresponding, after the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit; After the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd1 charging complete, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

Prepared auto restart 2: because inlet wire 1 power loss, through the first circuit breaker 1QF checkout voltage with after having pressure without stream, offside the 4th circuit breaker 4QF power supply, after time delay tT1, the first circuit breaker 1QF trips.When first circuit breaker 1QF trip control command sent first circuit breaker 1QF trip while and check the first circuit breaker 1QF indeed tripping, after first circuit breaker 1QF trips, 1TWJ closes expression first circuit breaker 1QF and is in trip position, and 1KKJ is for closing a floodgate rear state, thus the first circuit breaker 1QF position is produced not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit; After the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd2 charging complete, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the first tranformer protection action, second circuit breaker 2QF charge circuit discharges immediately due to the first tranformer protection action, second circuit breaker 2QF closing circuit is blocked simultaneously, therefore the second circuit breaker 2QF can not close a floodgate; And the 4th circuit breaker 4QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 4th circuit breaker 4QF still can close a floodgate in action.

Prepared auto restart 2: if power loss is caused by the first tranformer protection action; because protection act locking have employed blocking; 3rd circuit breaker 3QF and the 4th circuit breaker 4QF combined floodgate charge circuit can not be discharged and be blocked, therefore the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF still can close a floodgate in action.

(3) prepared auto restart 1: if power loss causes because of the first circuit breaker 1QF jump, then 1TWJ can close, and 1KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF position is not corresponding, after the second circuit breaker 2QF combined floodgate charge circuit 2Tcd1 charging complete, on inspection the first transformer with no pressure after, time delay tH2 starts closing pulse to a second circuit breaker 2QF closing circuit; After the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd1 charging complete, on inspection the second transformer with no pressure after, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

Prepared auto restart 2: if power loss causes because of the first circuit breaker 1QF jump, then 1TWJ can close, and 1KKJ is still for closing a floodgate rear state, same generation first circuit breaker 1QF position is not corresponding, after the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, on inspection the first transformer with no pressure after, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit; After the 4th circuit breaker 4QF combined floodgate charge circuit 4Tcd2 charging complete, on inspection the 3rd transformer with no pressure after, time delay tH4 starts a closing pulse to the 4th circuit breaker 4QF closing circuit.

(4) if manually pull open the first circuit breaker 1QF, then 1KKJ becomes state after separating brake from original rear state of closing a floodgate, the circuit breaker position of the first circuit breaker 1QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the second circuit breaker 2QF, the 4th circuit breaker 4QF; Therefore prepared auto restart 2: the closing circuit that can not start the 3rd circuit breaker 3QF, the 4th circuit breaker 4QF.

(ix), operational mode 9: the four circuit breaker 4QF runs, the second circuit breaker 2QF, the 3rd circuit breaker 3QF, the first circuit breaker 1QF stand-by heat

1 preparatory stage

Prepared auto restart 2: the four circuit breaker 4QF is combined floodgate running status, the 4KK(of its corresponding operating circuit breaker or two-position relay 4KKJ) remember for after combined floodgate, first circuit breaker 1QF, the 3rd circuit breaker 3QF are stand-by heat, 1KK, 3KK(of its corresponding operating circuit breaker or two-position relay 1KKJ, 3KKJ) remember for after separating brake.Because 4KK is rear state of closing a floodgate, so the 4th circuit breaker 4QF trip(ping) circuit is open, and closing circuit locking; Open first circuit breaker 1QF, the 3rd circuit breaker 3QF combined floodgate charge circuit 1Tcd2,3Tcd1 simultaneously, when the first circuit breaker 1QF, the 3rd circuit breaker 3QF then charge when meeting charge condition, then thoroughly discharge immediately when not satisfying condition, again charge after meeting charge condition.

2 course of action

2.1 inlet wire 2 power loss

Prepared auto restart 2: because inlet wire 2 power loss, through the 4th circuit breaker 4QF checkout voltage with after having pressure without stream, offside first circuit breaker 1QF power supply, trip after time delay tT4 the 4th circuit breaker 4QF.When the 4th circuit breaker 4QF trip control command sent the 4th circuit breaker 4QF trip while and check the 4th circuit breaker 4QF indeed tripping, after 4th circuit breaker 4QF trips, 4TWJ closes expression the 4th circuit breaker 4QF and is in trip position, and 4KKJ is for closing a floodgate rear state, thus the 4th circuit breaker 4QF position is produced not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd2 charging complete, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit; After the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(2) prepared auto restart 1: if power loss is caused by the 3rd tranformer protection action; because protection act locking have employed blocking; first circuit breaker 1QF and the second circuit breaker 2QF combined floodgate charge circuit can not be discharged and be blocked, therefore the first circuit breaker 1QF and the second circuit breaker 2QF still can close a floodgate in action.

Prepared auto restart 2: if power loss is caused by the 3rd tranformer protection action, because protection act locking have employed blocking, 3rd circuit breaker 3QF charge circuit discharges immediately due to the 3rd tranformer protection action, 3rd circuit breaker 3QF closing circuit is blocked simultaneously, therefore the 3rd circuit breaker 3QF can not close a floodgate; And the first circuit breaker 1QF combined floodgate charge circuit can not be discharged and be blocked, therefore the first circuit breaker 1QF still can close a floodgate in action.

Prepared auto restart 2: if power loss causes because of the 4th circuit breaker 4QF jump, then 4TWJ can close, and 4KKJ is still for closing a floodgate rear state, same generation the 4th circuit breaker 4QF position is not corresponding, after the first circuit breaker 1QF combined floodgate charge circuit 1Tcd2 charging complete, on inspection the first transformer with no pressure after, time delay tH1 starts closing pulse to a first circuit breaker 1QF closing circuit; After the 3rd circuit breaker 3QF combined floodgate charge circuit 3Tcd1 charging complete, on inspection the 3rd transformer with no pressure after, time delay tH3 starts a closing pulse to the 3rd circuit breaker 3QF closing circuit.

(4) if manually pull open the 4th circuit breaker 4QF, then 4KKJ becomes state after separating brake from original rear state of closing a floodgate, the position of the 4th circuit breaker 4QF is not corresponding is false, therefore prepared auto restart 1: the closing circuit that can not start the first circuit breaker 1QF, the second circuit breaker 2QF; Prepared auto restart 2: the closing circuit that can not start the first circuit breaker 1QF, the 3rd circuit breaker 3QF.

(x), signal circuit

1, after each tripping operation and combined floodgate export, prepared auto restart actuating signal is sent out immediately;

2, after tranformer protection action, while locking prepared auto restart closing circuit, tranformer protection action locking prepared auto restart switching signal is sent out;

3, there is not exception, prepared auto restart normal operation in system, and voltage or current circuit occur abnormal, and backup auto-activating device abnormal signal is sent out in time delay.

Claims

1. the decoupling control method of an expanded inter-bridge connection microcomputer control prepared auto restart, it is characterized in that: be two internal bridges by the decoupling zero of standard expanded inter-bridge connection, namely formed first internal bridge by the first circuit breaker 1QF, the second circuit breaker 2QF and the 4th circuit breaker 4QF and formed second internal bridge by the first circuit breaker 1QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF, be made up of the prepared auto restart logic of a complete expanded inter-bridge connection the control logic circuit acting in conjunction of these two internal bridges prepared auto restart separately; Wherein first internal bridge, the control logic circuit of its prepared auto restart is defined as prepared auto restart 1; Second internal bridge, the control logic circuit of its prepared auto restart is defined as prepared auto restart 2; Electric substation's primary connection circuit in the transmission and distribution networks that the method is applied is the expanded inter-bridge connection of the dual power supply of standard, include two-way power supply, two-way power supply is serially connected with respectively the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF and the 4th circuit breaker 4QF, also connect the first transformer, the second transformer and the 3rd transformer respectively, the line side of electric power incoming line and high voltage side of transformer or low-pressure side are all connected to voltage transformer;

A. the tripping operation of the first circuit breaker 1QF controls

Prepared auto restart 1 or prepared auto restart 2: when the first circuit breaker 1QF source current 1I1 is less than trip inspection no flow setpoint, first circuit breaker 1QF supply voltage 1U1 is less than trip inspection definite value with no pressure, 4th circuit breaker 4QF supply voltage 4U1 be greater than trip inspection have the two-position relay 1KKJ of compression set value and the first circuit breaker 1QF Non-follow control circuit breaker 1KK or its deciliter state to be in close a floodgate after position these conditions when simultaneously meeting, through certain time delay tT1, pulse control signal is exported to the first circuit breaker 1QF tripping operation control loop, first circuit breaker 1QF is tripped, export in-put of spare power supply trip operation signal simultaneously,

B. the tripping operation of the 4th circuit breaker 4QF controls

Prepared auto restart 1 or prepared auto restart 2: when the 4th circuit breaker 4QF source current 4I1 is less than trip inspection no flow setpoint, 4th circuit breaker 4QF supply voltage 4U1 is less than trip inspection definite value with no pressure, first circuit breaker 1QF supply voltage 1U1 be greater than trip inspection have the two-position relay 4KKJ of compression set value and the 4th circuit breaker 4QF Non-follow control circuit breaker 4KK or its deciliter state to be in close a floodgate after position these conditions when simultaneously meeting, through certain time delay tT4, pulse control signal is exported to the 4th circuit breaker 4QF tripping operation control loop, 4th circuit breaker 4QF is tripped, export in-put of spare power supply trip operation signal simultaneously,

C-1 discharging condition

Prepared auto restart 1

(1) when the first circuit breaker 1QF or hand control switch 1KK or 2KK of the second circuit breaker 2QF or the 4th circuit breaker 4QF or the two-position relay of 4KK or its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the second circuit breaker 2QF or the 4th circuit breaker 4QF is in open position, namely not corresponding, or first transformer side voltage be less than set point or the second transformer side voltage and be less than set point combined floodgate checkout voltage control word and put 1, discharge after certain time-delay;

(3) when the first circuit breaker 1QF is in closing position;

(4) when the first tranformer protection action;

(5) when the first circuit breaker 1QF sends shutting-brake control order;

Prepared auto restart 2:

(1) when the first circuit breaker 1QF or hand control switch 1KK or 3KK of the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF or the two-position relay of 4KK or its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF is in open position, namely not corresponding, or first transformer side voltage be less than set point or the 3rd transformer side voltage and be less than set point combined floodgate checkout voltage control word and put 1, discharge after certain time-delay;

(3) when the first circuit breaker 1QF is in closing position;

(4) when the first tranformer protection action;

(5) when the first circuit breaker 1QF sends shutting-brake control order;

C-2 charge condition

Prepared auto restart 1

(1) when two-position relay 4KKJ or 2KKJ of the 4th circuit breaker 4QF or the second circuit breaker 2QF hand control switch 4KK or 2KK or its deciliter state be in close a floodgate after position;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes charging of closing a floodgate and controls after charging time delay, and delay time is 1Tcd1, is set to 20 seconds;

Prepared auto restart 2

(1) when two-position relay 4KKJ or 3KKJ of the 4th circuit breaker 4QF or the 3rd circuit breaker 3QF hand control switch 4KK or 3KK or its deciliter state be in close a floodgate after position;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the first circuit breaker 1QF completes charging of closing a floodgate and controls after charging time delay, and delay time is 1Tcd2, is set to 20 seconds;

D. the first circuit breaker 1QF shutting-brake control

(1) when the 4th circuit breaker 4QF tripping operation control command has sent and checked the 4th circuit breaker 4QF indeed tripping, or when the first transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state be in and close a floodgate after position and the 4th circuit breaker 4QF is in open position, namely the 4th circuit breaker 4QF position is not corresponding;

(2) 1Tcd1 charging delay time arrives;

(3) first tranformer protections do not have action;

When above condition meets, through time delay, delay time is export pulse control signal to the first circuit breaker 1QF shutting-brake control loop after tH1, and the first circuit breaker 1QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;

(1) when the first transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state be in and close a floodgate after position and the second circuit breaker 2QF is in open position, namely the second circuit breaker 2QF position is not corresponding;

(2) 1Tcd1 charging delay time arrives;

(3) first tranformer protections do not have action;

(2) 1Tcd2 charging delay time arrives;

(3) first tranformer protections do not have action;

(1) when the first transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state be in and close a floodgate after position and the 3rd circuit breaker 3QF is in open position, namely the 3rd circuit breaker 3QF position is not corresponding;

(2) 1Tcd2 charging delay time arrives;

(3) first tranformer protections do not have action;

E. the second circuit breaker 2QF combined floodgate charge and discharge control

E-1 discharging condition

Prepared auto restart 1:

(3) when the second circuit breaker 2QF is in closing position;

(5) when the second circuit breaker 2QF sends shutting-brake control order;

E-2 charge condition

Prepared auto restart 1

(1) when two-position relay 4KKJ or 1KKJ of the 4th circuit breaker 4QF or the first circuit breaker 1QF hand control switch 4KK or 1KK or its deciliter state be in close a floodgate after position;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the second circuit breaker 2QF completes charging of closing a floodgate and controls after charging time delay, and delay time is 2Tcd1, is set to 20 seconds;

F. the second circuit breaker 2QF shutting-brake control

(1) when the first circuit breaker 1QF tripping operation control command has sent and checked the first circuit breaker 1QF indeed tripping, or when the first transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state be in and close a floodgate after position and the first circuit breaker 1QF is in open position, namely the first circuit breaker 1QF position is not corresponding;

(2) 2Tcd1 charging delay time arrives;

When above condition meets, through time delay, delay time is export pulse control signal to the second circuit breaker 2QF shutting-brake control loop after tH2, and the second circuit breaker 2QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;

(1) when the 4th circuit breaker 4QF tripping operation control command has sent and checked the 4th circuit breaker 4QF indeed tripping, or when the second transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state be in and close a floodgate after position and the 4th circuit breaker 4QF is in open position, namely the 4th circuit breaker 4QF position is not corresponding;

(2) 2Tcd1 charging delay time arrives;

(1) when the second transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state be in and close a floodgate after position and the 3rd circuit breaker 3QF is in open position, namely the 3rd circuit breaker 3QF position is not corresponding;

(2) 2Tcd1 charging delay time arrives;

G. the 3rd circuit breaker 3QF combined floodgate charge and discharge control

G-1 discharging condition

Prepared auto restart 2:

(1) when the first circuit breaker 1QF or hand control switch 1KK or 2KK of the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF or the two-position relay of 4KK or its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF is in open position, namely not corresponding, or first transformer side voltage be less than set point or the 3rd transformer side voltage and be less than set point combined floodgate checkout voltage control word and put 1, discharge after certain time-delay;

(3) when the 3rd circuit breaker 3QF is in closing position;

(5) when the 3rd circuit breaker 3QF sends shutting-brake control order;

G-2 charge condition

Prepared auto restart 2:

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the 3rd circuit breaker 3QF completes charging of closing a floodgate and controls after charging time delay, and delay time is 3Tcd1, is set to 20 seconds;

H. the 3rd circuit breaker 3QF shutting-brake control

(2) 3Tcd1 charging delay time arrives;

When above condition meets, through time delay, delay time is export pulse control signal after tH3 to the 3rd circuit breaker 3QF shutting-brake control loop, and the 3rd circuit breaker 3QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;

(1) when the 4th circuit breaker 4QF tripping operation control command has sent and checked the 4th circuit breaker 4QF indeed tripping, or when the 3rd transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 4KKJ of the 4th circuit breaker 4QF hand control switch 4KK or its deciliter state be in and close a floodgate after position and the 4th circuit breaker 4QF is in open position, namely the 4th circuit breaker 4QF position is not corresponding;

(2) 3Tcd1 charging delay time arrives;

H-3 prepared auto restart 2 the 3rd breaker closing controls three

(1) when the second transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 2KKJ of the second circuit breaker 2QF hand control switch 2KK or its deciliter state be in and close a floodgate after position and the second circuit breaker 2QF is in open position, namely the second circuit breaker 2QF position is not corresponding;

(2) 3Tcd1 charging delay time arrives;

I. the 4th circuit breaker 4QF combined floodgate charge and discharge control

I-1 discharging condition

Prepared auto restart 1:

(3) when the 4th circuit breaker 4QF is in closing position;

(4) when the 3rd tranformer protection action;

(5) when the 4th circuit breaker 4QF sends shutting-brake control order;

Prepared auto restart 2:

(3) when the 4th circuit breaker 4QF is in closing position;

(4) when the 3rd tranformer protection action;

(5) when the 4th circuit breaker 4QF sends shutting-brake control order;

I-2 charge condition

Prepared auto restart 1

(1) when two-position relay 1KKJ or 2KKJ of the first circuit breaker 4QF or the second circuit breaker 2QF hand control switch 1KK or 2KK or its deciliter state be in close a floodgate after position;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes charging of closing a floodgate and controls after charging time delay, and delay time is 4Tcd1, is set to 20 seconds;

Prepared auto restart 2

(1) when two-position relay 1KKJ or 3KKJ of the first circuit breaker 4QF or the 3rd circuit breaker 3QF hand control switch 1KK or 3KK or its deciliter state be in close a floodgate after position;

When above-mentioned arbitrary charge condition meets and arbitrary discharging condition does not meet, the 4th circuit breaker 4QF completes charging of closing a floodgate and controls after charging time delay, and delay time is 4Tcd2, is set to 20 seconds;

J. the 4th circuit breaker 4QF shutting-brake control

(1) when the first circuit breaker 1QF tripping operation control command has sent and checked the first circuit breaker 1QF indeed tripping, or when the second transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state be in and close a floodgate after position and the first circuit breaker 1QF is in open position, namely the first circuit breaker 1QF position is not corresponding;

(2) 4Tcd1 charging delay time arrives;

(3) the 3rd tranformer protections do not have action;

When above condition meets, through time delay, delay time is export pulse control signal after tH4 to the 4th circuit breaker 4QF shutting-brake control loop, and the 4th circuit breaker 4QF closes a floodgate, and exports in-put of spare power supply feed motion signal simultaneously;

(2) 4Tcd1 charging delay time arrives;

(3) the 3rd tranformer protections do not have action;

When above condition meets, through time delay, delay time is export pulse control signal after tH4 to the 4th circuit breaker 4QF shutting-brake control loop, the 4th circuit breaker 4QF breaker closing, exports in-put of spare power supply feed motion signal simultaneously;

(1) when the first circuit breaker 1QF tripping operation control command has sent and checked the first circuit breaker 1QF indeed tripping, or when the 3rd transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 1KKJ of the first circuit breaker 1QF hand control switch 1KK or its deciliter state be in and close a floodgate after position and the first circuit breaker 1QF is in open position, namely the first circuit breaker 1QF position is not corresponding;

(2) 4Tcd2 charging delay time arrives;

(3) the 3rd tranformer protections do not have action;

(1) when the 3rd transformer side voltage is less than combined floodgate checkout voltage definite value when combined floodgate checkout voltage control word HZJY is 1, simultaneously the two-position relay 3KKJ of the 3rd circuit breaker 3QF hand control switch 3KK or its deciliter state be in and close a floodgate after position and the 3rd circuit breaker 3QF is in open position, namely the 3rd circuit breaker 3QF position is not corresponding;

(2) 4Tcd2 charging delay time arrives;

(3) the 3rd tranformer protections do not have action;

K. abnormal signal controls

K-1 prepared auto restart 1 abnormal signal controls

(1) when the first circuit breaker 1QF or hand control switch 1KK or 2KK of the second circuit breaker 2QF or the 4th circuit breaker 4QF or the two-position relay of 4KK or its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the second circuit breaker 2QF or the 4th circuit breaker 4QF is in open position, namely not corresponding, or first transformer side voltage be less than set point or the second transformer side voltage and be less than set point combined floodgate checkout voltage control word and put 1, after certain time-delay, send abnormal signal;

(3) when the 4th circuit breaker 4QF does not send tripping operation control command, and the 4th circuit breaker 4QF source current 4I1 be less than trip inspection no flow setpoint or the 4th circuit breaker 4QF supply voltage 2U1 be less than trip inspection definite value with no pressure and the two-position relay 4KKJ of the 4th circuit breaker 4QF Non-follow control circuit breaker 4KK or its deciliter state be in close a floodgate after position time, after certain time-delay, send abnormal signal;

K-2 prepared auto restart 2 abnormal signal controls

(1) when the first circuit breaker 1QF or hand control switch 1KK or 3KK of the 3rd circuit breaker 2QF or the 4th circuit breaker 4QF or the two-position relay of 4KK or its deciliter state be in close a floodgate after position and the first circuit breaker 1QF or the 3rd circuit breaker 3QF or the 4th circuit breaker 4QF is in open position, namely not corresponding, or first transformer side voltage be less than set point or the 3rd transformer side voltage and be less than set point combined floodgate checkout voltage control word and put 1, after certain time-delay, send abnormal signal;

(3) when the 4th circuit breaker 4QF does not send tripping operation control command, and the 4th circuit breaker 4QF source current 4I 1 be less than trip inspection no flow setpoint or the 4th circuit breaker 4QF supply voltage 2U1 be less than trip inspection definite value with no pressure and the two-position relay 4KKJ of the 4th circuit breaker 4QF Non-follow control circuit breaker 4KK or its deciliter state be in close a floodgate after position time, after certain time-delay, send abnormal signal.