CN102801207A - Backup auto-switching voltage loss start interlocking method for multi-power double-bus substation - Google Patents
Backup auto-switching voltage loss start interlocking method for multi-power double-bus substation Download PDFInfo
- Publication number
- CN102801207A CN102801207A CN2012102704109A CN201210270410A CN102801207A CN 102801207 A CN102801207 A CN 102801207A CN 2012102704109 A CN2012102704109 A CN 2012102704109A CN 201210270410 A CN201210270410 A CN 201210270410A CN 102801207 A CN102801207 A CN 102801207A
- Authority
- CN
- China
- Prior art keywords
- power supply
- sections
- bus
- pressing plate
- logic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a backup auto-switching voltage loss start interlocking method for a multi-power double-bus substation, which belongs to the field of control. According to different wire inlet operating modes of a 35kV power supply, the backup auto-switch voltage loss start of a 6kV side power supply is interlocked by employing three 35kV/380V transformer voltages on a wire inlet side; through adjusting the cast/cut of each relay signal output pressing plate, the backup auto-switch low-voltage protection interlocking of the 6kV side power supply can achieve the function of dynamically adjusting the voltage loss start interlocking logic along with the change of a high-voltage system operating mode; the voltage loss start interlocking logic can be flexibly and dynamically adjusted according to three power inlet wires of the high-voltage 35kV system and the change of operating modes; and therefore, the backup auto-switching voltage loss start function of the power supply is more flexible, safer and more efficient in use. The backup auto-switching voltage loss start interlocking method is easy in field implementation, is convenient for operators to perform daily operation and maintenance, improves the reliability of low-voltage protection start, ensures the safe and stable operation of the power supply system, and can be widely applied to the control field of backup auto-switching devices in the multi-power double-bus substation.
Description
Technical field
The invention belongs to the control device or the control system field that supply distribution, relate in particular to a kind of control method that is used for urgent or stand-by power supply input/releasing.
Background technology
" prepared auto restart " device, i.e. automatic throw-in equipment of emergency power supply (or be called automatic switching device of standby power supply, custom abbreviates " prepared auto restart " as in the industry); Be the automatics of installing in order to improve power supply reliability in the electric power system,, ensure power supply continuously improving the power supply reliability of multiple feed load; Has important effect; Its effect is after working power failover or other reasons disappearance, promptly breaks off working power, and stand-by power supply is devoted oneself to work.
Along with the continuous development of industrial enterprise, increasingly high to the reliability requirement of electric power system, in electrical production and supply process; Be the reliability of guaranteeing to supply power; Reduce the user to greatest extent and have a power failure, transformer station and responsible consumer generally adopt duplicate supply or the subsequent use each other mode of many power supplys to supply power, and power supply " prepared auto restart " is to realize the important method of this function and obtained extensive use; Behind main electrical breakdown; " prepared auto restart " control system puts stand-by power supply into operation automatically, greatly improves the power supply capacity of the normal operation of electrical network, has guaranteed the reliability and the continuity of power supply; Along with power system development, the effect of automatic switching device of standby power supply and status are more and more come important.
Traditional " prepared auto restart " function is followed following control logic principle basically:
1), when working bus bar " decompression " fault takes place when, " prepared auto restart " device starts;
2), the circuit breaker that is connected with former working power of " prepared auto restart " device tripping, in order to avoid stand-by power supply closes a floodgate in fault;
3), whether " prepared auto restart " device inspection stand-by power supply qualified, as the circuit breaker that working bus bar is connected with the auxiliary bus-bar power supply that then closes that meets the demands;
4), " prepared auto restart " device is provided with " post acceleration " protection, only action is once.
Along with electrical network constantly enlarges; Some important production units of industrial enterprise; Adopt many power supplys double-bus partition running modes (like the positive female one section operation of 1# incoming power band at 35kV and above high voltage substation 35kV side more; Two sections operations of the positive mother of 2# incoming power band, the secondary female three sections operations of 3# incoming power band, wherein one section bus and two sections bus loads can not have the disturbance switching with secondary female three sections loads); And adopt the sectionalized single busbar connection operational mode and adopt power supply " prepared auto restart " defencive function in the 6kV side, to improve constantly the reliability of power supply.
And in factory's practical application; The realization of " prepared auto restart " function is at first passed through (being called for short " inspection does not have pressure " in the industry in the monitoring with busbar voltage; Down with) realize jumping into after the decompression function of wiretap; Through the monitoring (being called for short " inspection has pressure " in the industry, down together) of stand-by power supply being realized closing the function of block switch (being that stand-by power supply comes into operation).
The day for announcing is 2007.11.21, and notification number is the Chinese utility model patent of CN 200979999Y, discloses a kind of " backup auto-activating device "; It comprises three circuit breakers, motor-operating mechanism and automatic switchover appliance controller; Two circuit breakers are connected on respectively in the two-way power-supply system, and another circuit breaker is connected between two sections buses, and the two-way power-supply system connects two sections buses respectively; The automatic switchover appliance controller further comprises the operational mode switch; Be used to judge system situation, the control motor-operating mechanism breaks off the circuit breaker of the power-supply system that breaks down, then the circuit breaker of closed another power-supply system.
On control method, this technical scheme is installed voltage relay UX1, UX2 respectively in power supply 1# inlet wire, power supply 2# end of incoming cables in the sectionalized single busbar connection operational system; Get arbitrary phase voltage of two-way inlet wire; Simultaneously on two sections buses of system, voltage relay UM1 is set respectively, UM2 gets busbar voltage, (the two poles of the earth inspection does not have and presses, and promptly UX1, UM1 do not have pressure or UX2, UM2 does not have pressure) promptly is judged as this inlet wire fault when one section primary voltage and busbar voltage all lose; " prepared auto restart " device action then; Automatically this incoming power of tripping switch drops into Backup Power Switch simultaneously, recovers the power supply of dead electricity bus.
But this technical scheme is only applicable to the better simply sectionalized single busbar connection operational mode of electric power system; And to the complicated high pressure 35kV/6kV electric power system of many power supplys, operational mode; The voltage sampling method that existing " prepared auto restart " decompression starts locking then can't satisfy the needs of working control logic, because the logic control scheme is imappropriate, will very easily cause high voltage source prepared auto restart o-volt protection function error starting; Reduce " prepared auto restart " reliability of operation, threaten the safe and stable operation of electric power system.
The electric substation of prior art low-voltage power supply system list mother partition operation; Most modes that primary voltage is a basis for estimation of singly getting that adopt are promptly as long as the primary voltage relay electric-loss is promptly judged this loop fault dead electricity; Carry out the switching of stand-by power supply immediately; The deficiency of this mode is the accuracy of voltage sampling is relied on more, and barring condition is more single, and the accident that in industrial enterprise, causes power supply " prepared auto restart " misoperation to cause jumping " inlet wire " switch often takes place; So industrial enterprise takes place for avoiding " prepared auto restart " error action of device, have to electric substation's " prepared auto restart " function is out of service.
Summary of the invention
Technical problem to be solved by this invention provides the blocking method that a kind of many power supplys double-bus electric substation prepared auto restart decompression starts; It adopts three 35kV/380V institutes of inlet wire side time variant voltage that 6kV side power supply prepared auto restart function decompression is started to carry out locking; Can be according to three electric power incoming lines of high pressure 35kV system and the changes of operating modes that is become and dynamic flexibly adjustment decompression starts latching logic; Make power supply prepared auto restart decompression start the coming into operation more flexibly of function, safety, efficient, method be easy to field conduct and come into operation after be convenient to operations staff's regular job and safeguard.
Technical scheme of the present invention is: a kind of many power supplys double-bus electric substation blocking method that the prepared auto restart decompression starts is provided; The high-pressure side of said many power supplys double-bus electric substation has three road 35kV electric power incoming lines at least; Adopt three sections operational modes of double-bus; Each road electric power incoming line correspondence respectively has a used change, and the low-pressure side of said electric substation adopts 6kV sectionalized single busbar connection operational mode; Described prepared auto restart decompression startup blocking method comprises monitors each road inlet wire and corresponding sectionalized bus voltage; When a certain road primary voltage is lower than set point; Judge this road inlet wire " decompression ", the lead-in circuit breaker of this road inlet wire of tripping is if the adjacent sectional bus is in " pressure is arranged " state; Then start this section sectionalized bus and " prepared auto restart " device that faces mutually between the sectionalized bus, the section breaker between closed two sectionalized buss; It is characterized in that the blocking method that said many power supplys double-bus electric substation prepared auto restart decompression starts comprises the following steps: at least
A, measure the voltage of the used change of each 35kV and each 6kV bus respectively, make " decompression " and judge monitoring with under voltage relay;
B, measure the voltage of each 6kV bus respectively, do " pressure is arranged " and judge monitoring with overvoltage relay;
C, at the signal output part of each under voltage relay or overvoltage relay, signalization output pressing plate, be used to export or short circuit the output contact signal of corresponding under voltage relay;
D, whether put into operation according to each road 35kV electric power incoming line; Connect or break off the signal output pressing plate of the used change under voltage relay of corresponding 35kV; Through controlling cutting/throwing of each signal output pressing plate, change " dynamic latch-up logic " logic criterion key element formation that each 6kV main transformer prepared auto restart starts respectively;
E, to the operational mode of each road 35kV electric power incoming line, each 6kV main transformer prepared auto restart starts the logic criterion that adopts " fixed logic " to add " dynamic latch-up logic " and carries out the logic blocking that " prepared auto restart " start and judge;
" fixed logic " that F, its said each 6kV main transformer prepared auto restart start " has pressure " by pairing 6kV sectionalized bus of each 6kV main transformer " decompression " and adjacent bus and constitutes;
" the dynamic latch-up logic " that G, its said each 6kV main transformer prepared auto restart start is according to the operational mode decision of each road 35kV electric power incoming line;
H, to 35kV electric power incoming line different running method; The throwing of 6kV side power supply prepared auto restart under-voltage protection locking through adjusting each relay signal output pressing plate/cut; Reach decompression and start the function that latching logic is dynamically adjusted with the high-pressure system changes of operating modes; Strengthen the reliability that under-voltage protection starts, guaranteed the safe and stable operation of electric power system.
Concrete, the different running method of said 35kV electric power incoming line comprises following operational mode:
Operational mode one: the positive female one section operation band 1# main transformer of power supply one line 35kV and one section bus operation of 6kV; The positive female two sections operations of power supply two wires 35kV; The secondary female three sections operations of the three-way 35kV of power supply; 35kV just two sections of mothers is arranged side by side with three sections of the secondary mothers of 35kV, and 35kV two, three block switches are with two sections buses operations of 2# main transformer 6kV at closing position;
Operational mode two: the positive female two sections operation band 2# main transformers of power supply two wires 35kV and two sections bus operations of 6kV; The positive female one section operation of power supply one line 35kV; The secondary female three sections operations of the three-way 35kV of power supply; 35kV just one section of mother is arranged side by side with three sections of the secondary mothers of 35kV, and 35kV one, three block switches are with one section bus operation of 1# main transformer 6kV at closing position;
Operational mode three: power supply first line servicing; Power supply three tape 35kV positive female one section and the secondary female three sections operations of 35kV; 35kV one, three block switches are at closing position, and one section bus of band 1# main transformer 6kV moves, the positive female two sections operations of power supply two wires 35kV; 35kV two, three block switches are in the separating brake position, and two sections buses of band 2# main transformer 6kV move;
Operational mode four: power supply two wires maintenance; Power supply three tape 35kV positive female two sections and the secondary female three sections operations of 35kV; 35kV two, three block switches are at closing position, and two sections buses of band 2# main transformer 6kV move, the positive female one section operation of power supply one line 35kV; 35kV one, three block switches are in the separating brake position, and one section bus of band 1# main transformer 6kV moves;
Operational mode five: the three-way maintenance of power supply; Secondary female three sections operation 35kV two, three block switches of two sections of positive mothers of power supply two tape 35kV and 35kV are at closing position; Two sections bus operations of band 2# main transformer 6kV; The positive female one section operation of power supply one line 35kV, 35kV one, three block switches are in the separating brake position, and one section bus of band 1# main transformer 6kV moves.
Wherein, described blocking method carries out " decompression " with the first under voltage relay 1KAV, the 3rd under voltage relay 3KAV to one section bus of 6kV and judges monitoring, with the 7th overvoltage relay 7KAV one section bus of 6kV is carried out " pressure is arranged " and judges monitoring; With the second under voltage relay 2KAV, the 4th under voltage relay 4KAV two sections buses of 6kV are carried out " decompression " and judge monitoring, with the 8th overvoltage relay 8KAV two sections buses of 6kV are carried out " pressure is arranged " and judge monitoring; With the 5th under voltage relay 5KAV 380V that 1# becomes is carried out " decompression " and judge monitoring; With the 6th under voltage relay 6KAV 380V that 2# becomes is carried out " decompression " and judge monitoring, with the 9th under voltage relay 9KAV and the tenth under voltage relay 10KAV 380V that 3# becomes is carried out " decompression " and judge monitoring.
Its described 6kV side 1# main transformer " decompression " enable logic comprises that " fixed logic " adds " dynamic latch-up logic "; After the first under voltage relay 1KAV, the 3rd under voltage relay 3KAV judge one section bus loss of pressure of 6kV, " normally closed " junction closure of the first under voltage relay 1KAV and the 3rd under voltage relay 3KAV, overvoltage relay 8KAV judges that two sections buses of 6kV have pressure simultaneously; " often opening " junction closure of overvoltage relay 8KAV; Then " fixed logic " all meets the switching condition, waits for the judgement of " dynamic latch-up logic ", if " dynamic latch-up logic " also satisfies the switching condition; Then relay 1KTI gets the very first time; Start one section bus of 6kV " decompression " enable logic, one section inlet wire master switch of tripping 6kV, ready for closing the 6kV block switch.
Its described 6kV side 2# main transformer decompression enable logic comprises that " fixed logic " adds " dynamic latch-up logic "; After the second under voltage relay 2KAV, the 4th under voltage relay 4KAV judge two sections bus loss of pressure of 6kV, " normally closed " junction closure of the second under voltage relay 2KAV and the 4th under voltage relay 4KAV, the 7th overvoltage relay 7KAV judges that one section bus of 6kV has pressure simultaneously; " often opening " junction closure of the 7th overvoltage relay 7KAV; Then " fixed logic " all meets the switching condition, waits for the judgement of " dynamic latch-up logic ", if " dynamic latch-up logic " also satisfies the switching condition; Then second time relay 2KTI gets; Start two sections buses of 6kV " decompression " enable logic, two sections inlet wire master switchs of tripping 6kV, ready for closing the 6kV block switch.
Further, the logic criterion of said " dynamic latch-up logic " comprises seven pressing plate 7XB parallelly connected with the 5th overvoltage relay 5KAV output contact and the eight pressing plate 8XB parallelly connected with the 9th under voltage relay 9KAV output contact to the 6kV1# main transformer;
Further, the logic criterion of said " dynamic latch-up logic " comprises nine pressing plate 9XB parallelly connected with the 6th overvoltage relay 6KAV output contact and the ten pressing plate 10XB parallelly connected with the tenth under voltage relay 10KAV output contact to the 6kV2# main transformer.
More concrete, to the electric power incoming line different running method, described each 6kV side power supply prepared auto restart under-voltage protection pressing plate is specifically thrown/is cut and connects as follows:
Operational mode one: one section bus operation of the positive female one section operation band 1# main transformer 6kV of power supply one line 35kV, the positive female two sections operations of power supply two wires 35kV, the secondary female three sections operations of the three-way 35kV of power supply; 35kV just two sections of mothers is arranged side by side with three sections of the secondary mothers of 35kV, and 35kV two, three block switches are with two sections buses operations of 2# main transformer 6kV at closing position; The 7th pressing plate 7XB opens; The 8th pressing plate 8XB closes, and the 9th pressing plate 9XB opens, and the tenth pressing plate 10XB opens;
Operational mode two: the positive female two sections operation band 2# main transformers of power supply two wires 35kV and two sections bus operations of 6kV, the positive female one section operation of power supply one line 35kV, the secondary female three sections operations of the three-way 35kV of power supply; 35kV just one section of mother is arranged side by side with three sections of the secondary mothers of 35kV, and 35kV one, three block switches are with one section bus operation of 1# main transformer 6kV at closing position; The 7th pressing plate 7XB opens; The 8th pressing plate 8XB opens, and the 9th pressing plate 9XB opens, and the tenth pressing plate 10XB closes;
Operational mode three: the power supply first line servicing, power supply three tape 35kV positive female one section and the secondary female three sections operations of 35kV, 35kV one, three block switches are at closing position; One section bus operation of band 1# main transformer 6kV, the positive female two sections operations of power supply two wires 35kV, 35kV two, three block switches are in the separating brake position; Two sections bus operations of band 2# main transformer 6kV, the 7th pressing plate 7XB closes, and the 8th pressing plate 8XB opens; The 9th pressing plate 9XB opens, and the tenth pressing plate 10XB closes;
Operational mode four: the maintenance of power supply two wires, power supply three tape 35kV positive female two sections and the secondary female three sections operations of 35kV, 35kV two, three block switches are at closing position; Two sections bus operations of band 2# main transformer 6kV, the positive female one section operation of power supply one line 35kV, 35kV one, three block switches are in the separating brake position; One section bus operation of band 1# main transformer 6kV, the 7th pressing plate 7XB opens, and the 8th pressing plate 8XB closes; The 9th pressing plate 9XB closes, and the tenth 10XB opens;
Operational mode five: the three-way maintenance of power supply, power supply two tape 35kV positive female two sections and the secondary female three sections operations of 35kV, 35kV two, three block switches are at closing position; Two sections bus operations of band 2# main transformer 6kV, the positive female one section operation of power supply one line 35kV, 35kV one, three block switches are in the separating brake position; One section bus operation of band 1# main transformer 6kV, the 7th pressing plate 7XB opens, and the 8th pressing plate 8XB closes; The 9th pressing plate 9XB opens, and the tenth pressing plate 10XB closes.
Compare with prior art, advantage of the present invention is:
1. be the 35kV/6kV electric substation of many power supplys double-bus three partition running modes for the high-pressure side, adopt three 35kV/380V institutes of inlet wire side time variant voltage that 6kV side power supply prepared auto restart function decompression is started and carry out locking, strengthened the reliability of low voltage starting;
2. through the prepared auto restart decompression being started the switching of latching logic; Can be according to three electric power incoming lines of high pressure 35kV system and the changes of operating modes that is become and dynamic flexibly adjustment decompression starts latching logic, make power supply prepared auto restart decompression start the coming into operation more flexibly of function, safety, efficient;
Method be easy to field conduct and come into operation after be convenient to operations staff's regular job and safeguard.
Description of drawings
Fig. 1 is the principle schematic of existing electric power system " prepared auto restart " commonly used device;
Fig. 2 is the logic criterion sketch map of existing electric power system " prepared auto restart " commonly used;
Fig. 3 is the primary system structural representation of many power supplys double-bus three segmentation 35kV/6kV electric substations;
Fig. 4 is a 6kV bus bar side voltage sample principle schematic;
Fig. 5 is 1#, 2# institute time variant voltage sampling principle sketch map;
Fig. 6 is a 3# institute time variant voltage sampling principle sketch map;
Fig. 7 is that present technique scheme " prepared auto restart " decompression starts principle schematic;
Fig. 8 is that present technique scheme " prepared auto restart " decompression starts the dynamic latch-up principle schematic;
Fig. 9 is that present technique scheme " prepared auto restart " decompression starts the dynamic latch-up logical schematic.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Among Fig. 1; In the sectionalized single busbar connection operational system, existing electric power system " prepared auto restart " commonly used device is installed arbitrary phase voltage that voltage relay UX1, UX2 get inlet wire respectively in power supply 1# inlet wire, power supply 2# end of incoming cables, on two sections buses of system, voltage relay UM1 is set respectively simultaneously, UM2 gets busbar voltage; (the two poles of the earth inspection " does not have and presses " when one section primary voltage and busbar voltage all lose; Be that UX1, UM1 " do not have and press " or UX2, UM2 " do not have and press ") promptly be judged as this inlet wire " fault ", then " prepared auto restart " device action, this incoming power of tripping switch automatically; Drop into Backup Power Switch simultaneously, recover the power supply of dead electricity bus.
Among Fig. 2; " prepared auto restart " logic criterion of system shown in Figure 1 is following: (the two poles of the earth inspection does not have and presses when one section primary voltage and busbar voltage all lose; Be that UX1, UM1 do not have pressure) promptly be judged as this inlet wire fault, then backup auto-activating device action, automatic this incoming power of tripping switch 1DL; Drop into stand-by power supply interconnection switch 3DL simultaneously, recover the power supply of one section bus; (the two poles of the earth inspection does not have and presses when two sections primary voltages and busbar voltage all lose; Be that UX2, UM2 do not have pressure) promptly be judged as this inlet wire fault, then backup auto-activating device action, automatic this incoming power of tripping switch 2DL; Drop into stand-by power supply interconnection switch 3DL simultaneously, recover the power supply of two sections buses.
Among Fig. 3, this power supply prepared auto restart decompression start-up control method is applicable to 35kV/6kV electric substation, and the high-pressure side is many power supplys double-bus partition running mode, and low-pressure side is the controlled function that the 6kV power supply prepared auto restart decompression of sectionalized single busbar connection operational mode starts.
35kV/6kV electric substation primary system as shown in the figure, high-pressure side are the concrete operational modes of double-bus three segmentations, i.e. positive female one section operation of 35kV power supply one tape, the positive female two sections operations of 35kV power supply two tapes, the secondary female three sections operations of 35kV power supply three tapes; Wherein moving 35kV/380V on every 35kV inlet wire cable end (inlet wire plug-in strip upside) respectively and becoming one (be that 35kV power supply one tape 1# becomes operation, 35kV power supply two tape 2# become operation, and 35kV power supply three tape 3# become operation); Under the normal operating mode; 35kV positive female two sections and the secondary female three sections paired runnings (35kV two, three block switches are in closing position) of 35kV; The positive female one section fanout operation (35kV one, two-section switch, 35kV one, three block switches are in the separating brake position) of 35kV power supply one tape; 1# main transformer (35kV/6.3kV) runs on positive female one section of 35kV, one section bus operation of band 6kV, and 2# main transformer (35kV/6.3kV) runs on positive female two sections of 35kV, two sections bus operations of band 6kV; 6kV one, block switch are in hot stand-by duty (power supply prepared auto restart function comes into operation).
For the 35kV high-pressure side is the two female three partition running modes of three electric power incoming lines (or many power supplys); The 6kV low-pressure side is the 35kV/6kV electric substation of sectionalized single busbar connection operational mode; Because there is multiple operational mode in three electric power incoming lines in 35kV high-pressure side; Because operational mode is flexible and changeable; Adopt the inspection of existing prepared auto restart decompression startup method two-stage not have and press (mainly in the time variant voltage sampling of 35kV side institute) very difficulty, thereby can't realize that decompression starts reliably coming into operation of function, the safe operation of electric power system is brought great potential safety hazard.
Among Fig. 4, provided 6kV bus bar side voltage sample principle signal of the present invention, wherein one section bus of 6kV has been carried out decompression and judge monitoring, with overvoltage relay 7KAV one section bus of 6kV has been had to press and judge monitoring with under voltage relay 1KAV, 3KAV; With under voltage relay 2KAV, 4KAV two sections buses of 6kV are carried out decompression and judge monitoring, with overvoltage relay 8KAV two sections buses of 6kV are had to press and judge monitoring.
Among Fig. 5 and Fig. 6; Provide the present invention and become 380V voltage sample principle schematic; Can know by figure; With under voltage relay 5KAV 380V that 1# becomes is carried out decompression and judge monitoring, with under voltage relay 6KAV 380V that 2# becomes is carried out decompression and judge monitoring, with under voltage relay 9KAV and 10KAV 380V that 3# becomes is carried out decompression and judge monitoring.
Provided the principle schematic that 6kV prepared auto restart decompression starts in the present technique scheme among Fig. 7,6kV side 1# main transformer decompression enable logic comprises that " fixed logic " adds " dynamic latch-up logic ", and fixed logic is as scheming shown in the green frame; After 1KAV, 3KAV judge one section bus loss of pressure of 6kV; 1KAV, the normally closed node closure of 3KAV, 8KAV judges that two sections buses of 6kV have pressure simultaneously, it often opens the node closure; Fixed logic (being all conductings of part in the green frame) then; Wait for the judgement of dynamic latch-up logic, if dynamic latch-up logic (being inlet wire side estimate of situation that 380V becomes) also satisfies the switching condition, then time relay 1KTI gets; Start one section inlet wire master switch of 6kV one section bus loss of pressure logic tripping 6kV, ready for closing the 6kV block switch.
Because the present invention is directed to the 35kV high-pressure side is the two female three partition running modes of three electric power incoming lines (or many power supplys); The 6kV low-pressure side is the 35kV/6kV electric substation of sectionalized single busbar connection operational mode, so the major technique characteristics of power supply prepared auto restart decompression startup latching logic are as shown in Figure 8:
1) to the operational mode of two of 35kV and above inlet wire; The operation of 1# main transformer can be by power supply one line, power supply is three-way or supplied power by power supply one line and the three-way paired running of power supply; So 1# main transformer 6kV side low-voltage lockout logic selects for use 1# to become 380V under voltage relay 5KAV, 3# becomes 380V under voltage relay 9KAV and carries out one section bus loss of pressure latching logic judgement of 6kV, and can be through the normally closed node of adjustment pressing plate 7XB, 8XB switching under voltage relay 5KAV, under voltage relay 9KAV; To be adapted to the variation of 35kV powered operation mode; Promptly when the 1# main transformer only has the power supply of 35kV power supply one line, then open 7XB, 8XB closes; Become with 1# and to carry out one section bus loss of pressure locking of 6kV, 3# becomes and does not participate in logic determines; When the 1# main transformer only has the three-way power supply of 35kV power supply, then open 8XB, the 7XB that closes becomes with 3# and to carry out one section bus loss of pressure locking of 6kV, and 1# becomes and does not participate in logic determines; When 1# main transformer during by the three-way power supply arranged side by side of 35kV power supply one line and 35kV power supply, then open 7XB simultaneously, 8XB becomes to become with 3# with 1# simultaneously and carries out the locking of 6kV bus loss of pressure.
2) to the operational mode of two of 35kV and above inlet wire; The operation of 2# main transformer can be by the power supply two wires, power supply is three-way or supplied power by power supply two wires and the three-way paired running of power supply; So 2# main transformer 6kV side low-voltage lockout logic selects for use 2# to become 380V under voltage relay 6KAV, 3# becomes 380V under voltage relay 10KAV and carries out two sections bus loss of pressure latching logics judgements of 6kV, and can be through the normally closed node of adjustment pressing plate 9XB, 10XB switching under voltage relay 6KAV, under voltage relay 10KAV; To be adapted to the variation of 35kV powered operation mode; Promptly when the 2# main transformer only has the power supply of 35kV power supply two wires, then open 9XB, 10XB closes; Become with 2# and to carry out two sections bus loss of pressure lockings of 6kV, 3# becomes and does not participate in logic determines; When the 2# main transformer only has the three-way power supply of 35kV power supply, then open 10XB, the 9XB that closes becomes with 3# and to carry out two sections bus loss of pressure lockings of 6kV, and 2# becomes and does not participate in logic determines; When 2# main transformer during by the three-way power supply arranged side by side of 35kV power supply two wires and 35kV power supply, then open 9XB simultaneously, 10XB becomes to become with 3# with 2# simultaneously and carries out two sections bus loss of pressure lockings of 6kV.
Among Fig. 9, its described 6kV side 1# main transformer " decompression " enable logic comprises that " fixed logic " adds " dynamic latch-up logic ", after the first under voltage relay 1KAV, the 3rd under voltage relay 3KAV judge one section bus loss of pressure of 6kV; " normally closed " junction closure of the first under voltage relay 1KAV and the 3rd under voltage relay 3KAV; Overvoltage relay 8KAV judges that two sections buses of 6kV have pressure simultaneously, " often opening " junction closure of overvoltage relay 8KAV, and then " fixed logic " all meets the switching condition; Wait for the judgement of " dynamic latch-up logic "; If " dynamic latch-up logic " also satisfy the switching condition, then very first time relay 1KTI gets electricly, starts one section bus of 6kV " decompression " enable logic; One section inlet wire master switch of tripping 6kV, ready for closing the 6kV block switch;
Its described 6kV side 2# main transformer decompression enable logic comprises that " fixed logic " adds " dynamic latch-up logic "; After the second under voltage relay 2KAV, the 4th under voltage relay 4KAV judge two sections bus loss of pressure of 6kV, " normally closed " junction closure of the second under voltage relay 2KAV and the 4th under voltage relay 4KAV, the 7th overvoltage relay 7KAV judges that one section bus of 6kV has pressure simultaneously; " often opening " junction closure of the 7th overvoltage relay 7KAV; Then " fixed logic " all meets the switching condition, waits for the judgement of " dynamic latch-up logic ", if " dynamic latch-up logic " also satisfies the switching condition; Then second time relay 2KTI gets; Start two sections buses of 6kV " decompression " enable logic, two sections inlet wire master switchs of tripping 6kV, ready for closing the 6kV block switch.
In addition; Can know by Fig. 8; The logic criterion of said " dynamic latch-up logic " comprises seven pressing plate 7XB parallelly connected with the 5th overvoltage relay 5KAV output contact and the eight pressing plate 8XB parallelly connected with the 9th under voltage relay 9KAV output contact to the 6kV1# main transformer.
Equally, the logic criterion of said " dynamic latch-up logic " comprises nine pressing plate 9XB parallelly connected with the 6th overvoltage relay 6KAV output contact and the ten pressing plate 10XB parallelly connected with the tenth under voltage relay 10KAV output contact to the 6kV2# main transformer.
Can know through above technical scheme analysis; In the 35kV high-pressure side is two female three segmentations of three electric power incoming lines (or many power supplys); Low pressure 6kV side is a sectionalized single busbar connection operational mode electric power system; To the electric power incoming line different running method, the concrete switching mode of 6kV side power supply prepared auto restart under-voltage protection pressing plate is following:
Operational mode one: one section bus operation of the positive female one section operation band 1# main transformer 6kV of power supply one line 35kV; Two sections operations of the positive mother of power supply two wires 35kV, the secondary female three sections operations of the three-way 35kV of power supply, 35kV positive female two sections and two sections bus operations of 35kV secondary female three sections (35kV two, three block switches are at closing positions) arranged side by side band 2# main transformer 6kV; 7XB opens; 8XB closes, and 9XB opens, and 10XB opens;
Operational mode two: the positive female two sections operation band 2# main transformers of power supply two wires 35kV and two sections bus operations of 6kV; One section operation of the positive mother of power supply one line 35kV, the secondary female three sections operations of the three-way 35kV of power supply, 35kV positive female one section and one section bus operation of 35kV secondary female three sections (35kV one, three block switches are at closing positions) arranged side by side band 1# main transformer 6kV; 7XB opens; 8XB opens, and 9XB opens, and 10XB closes;
Operational mode three: power supply first line servicing, power supply three tape 35kV positive female one section and 35kV secondary female three sections (35kV one, three block switches are at closing positions) operation, one section bus operation of band 1# main transformer 6kV; The positive female two sections operations (35kV two, three block switches are in the separating brake position) of power supply two wires 35kV; Two sections bus operations of band 2# main transformer 6kV, 7XB closes, and 8XB opens; 9XB opens, and 10XB closes;
Operational mode four: the maintenance of power supply two wires, power supply three tape 35kV positive female two sections and 35kV secondary female three sections (35kV two, three block switches are at closing positions) operation, two sections bus operations of band 2# main transformer 6kV; The positive female one section operation (35kV one, three block switches are in the separating brake position) of power supply one line 35kV; One section bus operation of band 1# main transformer 6kV, 7XB opens, and 8XB closes; 9XB closes, and 10XB opens;
Operational mode five: the three-way maintenance of power supply, power supply two tape 35kV positive female two sections and 35kV secondary female three sections (35kV two, three block switches are at closing positions) operation, two sections bus operations of band 2# main transformer 6kV; The positive female one section operation (35kV one, three block switches are in the separating brake position) of power supply one line 35kV; One section bus operation of band 1# main transformer 6kV, 7XB opens, and 8XB closes; 9XB opens, and 10XB closes.
Because above-mentioned accompanying drawing all adopts the standard technique of painting and mark in the industry, those skilled in the art is appreciated that fully and understands its implication, flows to so no longer be described in detail its annexation, course of action and control signal at this.
Can know that to sum up this technical scheme is multiple feed and the complicated electric power system of operational mode to 35kV/6kV electric substation high-pressure side, to the electric power incoming line different running method; 6kV side power supply prepared auto restart under-voltage protection locking is through adopting adjustment pressing plate 7XB rationally, 8XB, 9XB; The switching of 10XB; Reach decompression and start the function that latching logic is dynamically adjusted with the high-pressure system changes of operating modes, greatly strengthened the reliability that under-voltage protection starts, guaranteed the safe and stable operation of electric power system.
Practical implementation step of the present invention is following:
1, installation instructions:
This programme only can be accomplished construction in power supply prepared auto restart cabinet, the strict electric industry construction safety rules of carrying out require cabinet reliably to have a power failure, to guarantee construction safety during construction.
(1) 7XB, 8XB, 9XB, 10XB four block protection pressing plates at first are installed in former prepared auto restart control cubicle, are fixed position and marked;
(2) will protect corresponding contacts such as pressing plate, voltage relay to be connected in series into control loop successively according to principle drawing (like accompanying drawing 4～accompanying drawing 8); Construct in strict accordance with construction drawing; Require the lead wire terminal reliably to be fastenedly connected, wiring must be drawn from terminal board and connect standard construction;
2, function check explanation:
After accomplishing according to construction drawing, controlled function is checked, the 1# of 6kV system, the operation of 2# inlet wire during check, segmentation is in hot stand-by duty, and 6kV power supply prepared auto restart is at state out of service, and concrete checking procedure is following:
(1) drop into pressing plate 7XB, the normally closed node of 5KAV is out of service, and promptly 1# becomes the no-voltage dead locking function and withdraws from, and opens pressing plate 7XB, and the normally closed node of 5KAV puts into operation, and promptly 1# becomes the no-voltage dead locking function and puts into operation;
(2) drop into pressing plate 8XB, the normally closed node of 9KAV is out of service, and promptly 3# becomes the no-voltage dead locking function and withdraws from, and opens pressing plate 8XB, and the normally closed node of 9KAV puts into operation, and promptly 3# becomes the no-voltage dead locking function and puts into operation;
(3) drop into pressing plate 9XB, the normally closed node of 6KAV is out of service, and promptly 2# becomes the no-voltage dead locking function and withdraws from, and opens pressing plate 9XB, and the normally closed node of 6KAV puts into operation, and promptly 2# becomes the no-voltage dead locking function and puts into operation;
(4) drop into pressing plate 10XB, the normally closed node of 10KAV is out of service, and promptly 3# becomes the no-voltage dead locking function and withdraws from, and opens pressing plate 10XB, and the normally closed node of 10KAV puts into operation, and promptly 3# becomes the no-voltage dead locking function and puts into operation;
(5) after above verification is accomplished,, after the inspection affirmation is errorless, power supply prepared auto restart function is put into operation according to the lead wire of each calibration equipment of construction drawing recovery.
In sum; The present invention is directed to the high-pressure side is the complicated 35kV/6kV electric substation of many power supplys double-bus partition running mode; Throwing through adopting the protection pressing plate/move back; Can be effectively the prepared auto restart decompression be started latching logic and switch flexibly, becomes changes of operating modes and dynamically adjust the function of decompression startup latching logic flexibly, eliminated the hidden danger of prepared auto restart misoperation thereby reach with high pressure 35kV system power supply inlet wire and institute; Greatly strengthened the reliability of action, be a kind of flexibly, safety, reliable decompression starts the locking control technology.
The present invention can be widely used in the control field of many power supplys double-bus electric substation " prepared auto restart " device.
Claims (6)
1. the blocking method that starts of the electric substation of power supply double-bus more than kind prepared auto restart decompression; The high-pressure side of said many power supplys double-bus electric substation has three road 35kV electric power incoming lines at least; Adopt three sections operational modes of double-bus; Each road electric power incoming line correspondence respectively has a used change, and the low-pressure side of said electric substation adopts 6kV sectionalized single busbar connection operational mode; Described prepared auto restart decompression startup blocking method comprises monitors each road inlet wire and corresponding sectionalized bus voltage; When a certain road primary voltage is lower than set point; Judge this road inlet wire " decompression ", the lead-in circuit breaker of this road inlet wire of tripping is if the adjacent sectional bus is in " pressure is arranged " state; Then start this section sectionalized bus and " prepared auto restart " device that faces mutually between the sectionalized bus, the section breaker between closed two sectionalized buss; It is characterized in that the blocking method that said many power supplys double-bus electric substation prepared auto restart decompression starts comprises the following steps: at least
A, measure the voltage of the used change of each 35kV and each 6kV bus respectively, make " decompression " and judge monitoring with under voltage relay;
B, measure the voltage of each 6kV bus respectively, do " pressure is arranged " and judge monitoring with overvoltage relay;
C, at the signal output part of each under voltage relay or overvoltage relay, signalization output pressing plate, be used to export or short circuit the output contact signal of corresponding under voltage relay;
D, whether put into operation according to each road 35kV electric power incoming line; Connect or break off the signal output pressing plate of the used change under voltage relay of corresponding 35kV; Through controlling cutting/throwing of each signal output pressing plate, change " dynamic latch-up logic " logic criterion key element formation that each 6kV main transformer prepared auto restart starts respectively;
E, to the operational mode of each road 35kV electric power incoming line, each 6kV main transformer prepared auto restart starts the logic criterion that adopts " fixed logic " to add " dynamic latch-up logic " and carries out the logic blocking that " prepared auto restart " start and judge;
" fixed logic " that F, its said each 6kV main transformer prepared auto restart start " has pressure " by pairing 6kV sectionalized bus of each 6kV main transformer " decompression " and adjacent bus and constitutes;
" the dynamic latch-up logic " that G, its said each 6kV main transformer prepared auto restart start is according to the operational mode decision of each road 35kV electric power incoming line;
H, to 35kV electric power incoming line different running method; The throwing of 6kV side power supply prepared auto restart under-voltage protection locking through adjusting each relay signal output pressing plate/cut; Reach decompression and start the function that latching logic is dynamically adjusted with the high-pressure system changes of operating modes; Strengthen the reliability that under-voltage protection starts, guaranteed the safe and stable operation of electric power system.
2. according to the blocking method of the described many power supplys double-bus of claim 1 electric substation prepared auto restart decompression startup, it is characterized in that the different running method of said 35kV electric power incoming line, comprise following operational mode:
Operational mode one: the positive female one section operation band 1# main transformer of power supply one line 35kV and one section bus operation of 6kV; The positive female two sections operations of power supply two wires 35kV; The secondary female three sections operations of the three-way 35kV of power supply; 35kV just two sections of mothers is arranged side by side with three sections of the secondary mothers of 35kV, and 35kV two, three block switches are with two sections buses operations of 2# main transformer 6kV at closing position;
Operational mode two: the positive female two sections operation band 2# main transformers of power supply two wires 35kV and two sections bus operations of 6kV; The positive female one section operation of power supply one line 35kV; The secondary female three sections operations of the three-way 35kV of power supply; 35kV just one section of mother is arranged side by side with three sections of the secondary mothers of 35kV, and 35kV one, three block switches are with one section bus operation of 1# main transformer 6kV at closing position;
Operational mode three: power supply first line servicing; Power supply three tape 35kV positive female one section and the secondary female three sections operations of 35kV; 35kV one, three block switches are at closing position, and one section bus of band 1# main transformer 6kV moves, the positive female two sections operations of power supply two wires 35kV; 35kV two, three block switches are in the separating brake position, and two sections buses of band 2# main transformer 6kV move;
Operational mode four: power supply two wires maintenance; Power supply three tape 35kV positive female two sections and the secondary female three sections operations of 35kV; 35kV two, three block switches are at closing position, and two sections buses of band 2# main transformer 6kV move, the positive female one section operation of power supply one line 35kV; 35kV one, three block switches are in the separating brake position, and one section bus of band 1# main transformer 6kV moves;
Operational mode five: the three-way maintenance of power supply; Secondary female three sections operation 35kV two, three block switches of two sections of positive mothers of power supply two tape 35kV and 35kV are at closing position; Two sections bus operations of band 2# main transformer 6kV; The positive female one section operation of power supply one line 35kV, 35kV one, three block switches are in the separating brake position, and one section bus of band 1# main transformer 6kV moves.
3. the blocking method that starts according to the described many power supplys double-bus of claim 1 electric substation prepared auto restart decompression; It is characterized in that described blocking method carries out " decompression " with the first under voltage relay 1KAV, the 3rd under voltage relay 3KAV to one section bus of 6kV and judges monitoring, with the 7th overvoltage relay 7KAV one section bus of 6kV is carried out " pressure is arranged " and judge monitoring; With the second under voltage relay 2KAV, the 4th under voltage relay 4KAV two sections buses of 6kV are carried out " decompression " and judge monitoring, with the 8th overvoltage relay 8KAV two sections buses of 6kV are carried out " pressure is arranged " and judge monitoring; With the 5th under voltage relay 5KAV 380V that 1# becomes is carried out " decompression " and judge monitoring; With the 6th under voltage relay 6KAV 380V that 2# becomes is carried out " decompression " and judge monitoring, with the 9th under voltage relay 9KAV and the tenth under voltage relay 10KAV 380V that 3# becomes is carried out " decompression " and judge monitoring.
4. the blocking method that starts according to the described many power supplys double-bus of claim 1 electric substation prepared auto restart decompression; It is characterized in that described 6kV side 1# main transformer " decompression " enable logic comprises that " fixed logic " adds " dynamic latch-up logic "; After the first under voltage relay 1KAV, the 3rd under voltage relay 3KAV judge one section bus loss of pressure of 6kV, " normally closed " junction closure of the first under voltage relay 1KAV and the 3rd under voltage relay 3KAV, overvoltage relay 8KAV judges that two sections buses of 6kV have pressure simultaneously; " often opening " junction closure of overvoltage relay 8KAV; Then " fixed logic " all meets the switching condition, waits for the judgement of " dynamic latch-up logic ", if " dynamic latch-up logic " also satisfies the switching condition; Then relay 1KTI gets the very first time; Start one section bus of 6kV " decompression " enable logic, one section inlet wire master switch of tripping 6kV, ready for closing the 6kV block switch;
Described 6kV side 2# main transformer decompression enable logic comprises that " fixed logic " adds " dynamic latch-up logic "; After the second under voltage relay 2KAV, the 4th under voltage relay 4KAV judge two sections bus loss of pressure of 6kV, " normally closed " junction closure of the second under voltage relay 2KAV and the 4th under voltage relay 4KAV, the 7th overvoltage relay 7KAV judges that one section bus of 6kV has pressure simultaneously; " often opening " junction closure of the 7th overvoltage relay 7KAV; Then " fixed logic " all meets the switching condition, waits for the judgement of " dynamic latch-up logic ", if " dynamic latch-up logic " also satisfies the switching condition; Then second time relay 2KTI gets; Start two sections buses of 6kV " decompression " enable logic, two sections inlet wire master switchs of tripping 6kV, ready for closing the 6kV block switch.
5. the blocking method that starts according to the described many power supplys double-bus of claim 1 electric substation prepared auto restart decompression; The logic criterion that it is characterized in that said " dynamic latch-up logic " comprises seven pressing plate 7XB parallelly connected with the 5th overvoltage relay 5KAV output contact and the eight pressing plate 8XB parallelly connected with the 9th under voltage relay 9KAV output contact to the 6kV1# main transformer;
The logic criterion of said " dynamic latch-up logic " comprises nine pressing plate 9XB parallelly connected with the 6th overvoltage relay 6KAV output contact and the ten pressing plate 10XB parallelly connected with the tenth under voltage relay 10KAV output contact to the 6kV2# main transformer.
6. the blocking method that starts according to claim 1,4 or 5 described many power supplys double-bus electric substation prepared auto restart decompressions is characterized in that to the electric power incoming line different running method described each 6kV side power supply prepared auto restart under-voltage protection pressing plate is specifically thrown/cut and connects as follows:
Operational mode one: one section bus operation of the positive female one section operation band 1# main transformer 6kV of power supply one line 35kV, the positive female two sections operations of power supply two wires 35kV, the secondary female three sections operations of the three-way 35kV of power supply; 35kV just two sections of mothers is arranged side by side with three sections of the secondary mothers of 35kV, and 35kV two, three block switches are with two sections buses operations of 2# main transformer 6kV at closing position; The 7th pressing plate 7XB opens; The 8th pressing plate 8XB closes, and the 9th pressing plate 9XB opens, and the tenth pressing plate 10XB opens;
Operational mode two: the positive female two sections operation band 2# main transformers of power supply two wires 35kV and two sections bus operations of 6kV, the positive female one section operation of power supply one line 35kV, the secondary female three sections operations of the three-way 35kV of power supply; 35kV just one section of mother is arranged side by side with three sections of the secondary mothers of 35kV, and 35kV one, three block switches are with one section bus operation of 1# main transformer 6kV at closing position; The 7th pressing plate 7XB opens; The 8th pressing plate 8XB opens, and the 9th pressing plate 9XB opens, and the tenth pressing plate 10XB closes;
Operational mode three: the power supply first line servicing, power supply three tape 35kV positive female one section and the secondary female three sections operations of 35kV, 35kV one, three block switches are at closing position; One section bus operation of band 1# main transformer 6kV, the positive female two sections operations of power supply two wires 35kV, 35kV two, three block switches are in the separating brake position; Two sections bus operations of band 2# main transformer 6kV, the 7th pressing plate 7XB closes, and the 8th pressing plate 8XB opens; The 9th pressing plate 9XB opens, and the tenth pressing plate 10XB closes;
Operational mode four: the maintenance of power supply two wires, power supply three tape 35kV positive female two sections and the secondary female three sections operations of 35kV, 35kV two, three block switches are at closing position; Two sections bus operations of band 2# main transformer 6kV, the positive female one section operation of power supply one line 35kV, 35kV one, three block switches are in the separating brake position; One section bus operation of band 1# main transformer 6kV, the 7th pressing plate 7XB opens, and the 8th pressing plate 8XB closes; The 9th pressing plate 9XB closes, and the tenth 10XB opens;
Operational mode five: the three-way maintenance of power supply, power supply two tape 35kV positive female two sections and the secondary female three sections operations of 35kV, 35kV two, three block switches are at closing position; Two sections bus operations of band 2# main transformer 6kV, the positive female one section operation of power supply one line 35kV, 35kV one, three block switches are in the separating brake position; One section bus operation of band 1# main transformer 6kV, the 7th pressing plate 7XB opens, and the 8th pressing plate 8XB closes; The 9th pressing plate 9XB opens, and the tenth pressing plate 10XB closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102704109A CN102801207A (en) | 2012-07-31 | 2012-07-31 | Backup auto-switching voltage loss start interlocking method for multi-power double-bus substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102704109A CN102801207A (en) | 2012-07-31 | 2012-07-31 | Backup auto-switching voltage loss start interlocking method for multi-power double-bus substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102801207A true CN102801207A (en) | 2012-11-28 |
Family
ID=47200221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102704109A Pending CN102801207A (en) | 2012-07-31 | 2012-07-31 | Backup auto-switching voltage loss start interlocking method for multi-power double-bus substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102801207A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237586A (en) * | 2014-08-19 | 2014-12-24 | 千江（上海）信息科技有限公司 | High-precision metering system of double-bus power supply circuit |
| CN105281421A (en) * | 2015-09-29 | 2016-01-27 | 洛阳新思路电气股份有限公司 | Dynamo-electric integrated locking automatic control device |
| CN106787141A (en) * | 2016-12-28 | 2017-05-31 | 国网上海市电力公司 | A kind of extension spare power automatic switching method of 10kV switchyards interconnection |
| CN107086664A (en) * | 2017-05-03 | 2017-08-22 | 国家电网公司 | A kind of substation exit pressing plate state monitoring apparatus and method |
| CN107908137A (en) * | 2017-12-04 | 2018-04-13 | 常熟开关制造有限公司(原常熟开关厂） | Electrical interlocking control device and its control method, automatic change-over |
| CN110333410A (en) * | 2019-07-18 | 2019-10-15 | 中国能源建设集团广东火电工程有限公司 | A kind of prepared auto restart test device |
| CN111668814A (en) * | 2020-05-29 | 2020-09-15 | 深圳供电局有限公司 | Bus fault removing method and device, computer equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6330176B1 (en) * | 2000-11-15 | 2001-12-11 | Powerware Corporation | Multi-input power transfer and uninterruptible power supply apparatus and methods of operation thereof |
| CN200979999Y (en) * | 2006-11-30 | 2007-11-21 | 深圳市华力特电气有限公司 | A backup auto-activating device |
| CN101369739A (en) * | 2008-09-28 | 2009-02-18 | 上海宝钢化工有限公司 | Spare power automatic switching device and method for three-segment bus two-segment switch |
-
2012
- 2012-07-31 CN CN2012102704109A patent/CN102801207A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6330176B1 (en) * | 2000-11-15 | 2001-12-11 | Powerware Corporation | Multi-input power transfer and uninterruptible power supply apparatus and methods of operation thereof |
| CN200979999Y (en) * | 2006-11-30 | 2007-11-21 | 深圳市华力特电气有限公司 | A backup auto-activating device |
| CN101369739A (en) * | 2008-09-28 | 2009-02-18 | 上海宝钢化工有限公司 | Spare power automatic switching device and method for three-segment bus two-segment switch |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237586A (en) * | 2014-08-19 | 2014-12-24 | 千江（上海）信息科技有限公司 | High-precision metering system of double-bus power supply circuit |
| CN104237586B (en) * | 2014-08-19 | 2017-06-06 | 国网河南省电力公司济源供电公司 | The high-precision measuring system of double-bus power supply circuit |
| CN105281421A (en) * | 2015-09-29 | 2016-01-27 | 洛阳新思路电气股份有限公司 | Dynamo-electric integrated locking automatic control device |
| CN106787141A (en) * | 2016-12-28 | 2017-05-31 | 国网上海市电力公司 | A kind of extension spare power automatic switching method of 10kV switchyards interconnection |
| CN107086664A (en) * | 2017-05-03 | 2017-08-22 | 国家电网公司 | A kind of substation exit pressing plate state monitoring apparatus and method |
| CN107086664B (en) * | 2017-05-03 | 2019-08-23 | 国家电网公司 | A kind of substation exit pressing plate state monitoring apparatus and method |
| CN107908137A (en) * | 2017-12-04 | 2018-04-13 | 常熟开关制造有限公司(原常熟开关厂） | Electrical interlocking control device and its control method, automatic change-over |
| CN107908137B (en) * | 2017-12-04 | 2019-06-28 | 常熟开关制造有限公司(原常熟开关厂） | Electrical interlocking control device and its control method, automatic change-over |
| CN110333410A (en) * | 2019-07-18 | 2019-10-15 | 中国能源建设集团广东火电工程有限公司 | A kind of prepared auto restart test device |
| CN110333410B (en) * | 2019-07-18 | 2024-04-16 | 中国能源建设集团广东火电工程有限公司 | Spare power automatic switching testing device |
| CN111668814A (en) * | 2020-05-29 | 2020-09-15 | 深圳供电局有限公司 | Bus fault removing method and device, computer equipment and storage medium |
| CN111668814B (en) * | 2020-05-29 | 2023-01-03 | 深圳供电局有限公司 | Bus fault removing method and device, computer equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101369739B (en) | Spare power automatic switching device and method for three-segment bus two-segment switch | |
| CN102801207A (en) | Backup auto-switching voltage loss start interlocking method for multi-power double-bus substation | |
| CN107069676A (en) | Power distribution network fault positioning and rapid isolation recovery control method | |
| CN105655879B (en) | The voltage arrangement of 110 kilovolts of system busbar combining unit duplicate system retrofits of intelligent substation double bus scheme mode | |
| CN201266791Y (en) | Self-casting device of transforming plant lead-in side self-adapting standby power supply | |
| CN102790426A (en) | Improved spare power source automatic switch method for single bus sectionalized operation of power substation | |
| CN101227091A (en) | Intelligent power utilization system | |
| CN104037936A (en) | Economical operation control method for distribution transformers with spare power automatic switching function | |
| CN110120664A (en) | A kind of reliable urban power distribution network grid structure of intelligence | |
| CN201174618Y (en) | Fast switching control apparatus for micro-computer electric power | |
| CN201234136Y (en) | Dual power source electricity supply system | |
| CN201374585Y (en) | Undisturbed stability control device | |
| CN103972865A (en) | Control method for preventing motor from being switched into short-circuit fault | |
| CN202550668U (en) | Distributed power distribution network management terminal | |
| CN105281419A (en) | Standby power supply automatic input system and validation method thereof | |
| CN110932254A (en) | Multiple redundant power supply control system and method | |
| CN215448009U (en) | Environment monitoring system based on flexible direct current wind-solar energy storage | |
| CN109510193A (en) | A kind of distribution switchyard segmentation backup auto-activating device and its operation method | |
| CN202009236U (en) | Single-bus segmental running control device of substation | |
| CN210724305U (en) | Fault guiding safety device, power utilization safety system, multi-path power utilization safety system and automatic bus transfer interlocking control system | |
| CN205583386U (en) | Voltage hardware of double bus scheme's of transformer substation dualization of generating line merging cells configuration is connected | |
| CN201130821Y (en) | Intelligent control apparatus for energy consumption system | |
| CN201018314Y (en) | Microcomputer type auto-switch-on device | |
| CN209329687U (en) | A kind of traction substation emergency protection system | |
| CN112510706A (en) | A close ring circuit with mother for 10kV distribution network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20171024 |