CN105375611A - Automatic bus transfer equipment and method applicable to double-bus connection - Google Patents
Automatic bus transfer equipment and method applicable to double-bus connection Download PDFInfo
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- CN105375611A CN105375611A CN201510807077.4A CN201510807077A CN105375611A CN 105375611 A CN105375611 A CN 105375611A CN 201510807077 A CN201510807077 A CN 201510807077A CN 105375611 A CN105375611 A CN 105375611A
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Abstract
The invention provides automatic bus transfer equipment and method applicable to double-bus connection. The automatic bus transfer equipment at least comprises two power supply circuits that are standby to each other; a power supply circuit I is connected with a bus I and a bus II separately at least through a first circuit breaker; a power supply circuit II is connected with the bus I and the bus II separately at least through a second circuit breaker; and the equipment further comprises a current voltage return circuit, an input circuit and an output circuit. The automatic bus transfer equipment is applicable to the 110kv transformer substation with double-bus connection; and the standby power supply can be rapidly put into operation through the automatic bus transfer equipment, so that the outage time of the transformer substation can be reduced, and the outage cost is lowered.
Description
Technical field
The present invention relates to transformer station's technical field, particularly relate to a kind of backup auto-activating device and the method that are applicable to double bus scheme.
Background technology
In prior art, adopt the 110kV transformer station of double bus scheme generally not design backup auto-activating device, when a wherein working line fault dead electricity, to be put into operation stand-by power supply by operations staff's manual operation, cause interruption duration longer.
Summary of the invention
The technical problem to be solved in the present invention is exactly the shortcoming for prior art, proposes a kind of spare power automatic switching method and the device thereof that are applicable to double bus scheme.For the 110kV transformer station of double bus scheme, only have two 110 line powerings and under not allowing the condition of paired running, when a wherein working line fault dead electricity, the present invention can be put into operation stand-by power supply fast by prepared auto restart, transformer station's interruption duration can be reduced, reduce loss of outage.
The backup auto-activating device of double bus scheme of the present invention, at least comprise Liang Tiao supply line, Liang Tiao supply line is for subsequent use each other, and supply line one is at least connected with I bus and II bus respectively by the first circuit breaker, and supply line two is at least connected with I bus and II bus respectively by the second circuit breaker; Be connected by bus between I bus and II bus; The inlet wire side of supply line one and supply line two is respectively arranged with voltage transformer for detecting primary voltage, and supply line one and supply line two are also provided with current transformer for detecting the electric current of Liang Tiao supply line; I bus and II bus are respectively arranged with voltage transformer for detecting the three-phase voltage on bus; This device also comprises current/voltage loop, input circuit and output loop, and wherein current/voltage loop is for introducing current and voltage signals, input circuit for introducing the position contact of each switch, output loop be used for circuit breaker point, close a floodgate.
Preferably, in described current/voltage loop, the voltage access device after crush-cutting is used for having pressure, differentiation with no pressure, the voltage wherein after crush-cutting is detected by the voltage transformer on bus and obtains; Introduce two sections of primary voltages as the assistant criteria hauling oneself willingly into preparation and action, wherein two sections of primary voltages are detected by the voltage transformer of the inlet wire side of supply line one, circuit two and obtain; Each service entrance switch respectively introduces a phase current, is to cause backup auto-activating device malfunction after preventing voltage transformer three-phase from breaking, and wherein this electric current is detected by the current transformer on supply line one, circuit two and obtains.
Preferably, in described input circuit, introduce the position contact of supply line one, circuit two and block switch, differentiate for system operation mode, haul oneself willingly into and prepare and haul oneself willingly into action; Introduce position signalling after the conjunction of supply line one, circuit two and block switch, jump locking as the hand hauled oneself willingly under various ruuning situation.
Preferably, in described output loop, the contact of device output contact You Tiao supply line one, each two pairs of actions simultaneously of circuit two, for tripping first and second circuit breaker; Export the contact closing supply line one, each two pairs of self contained functions of circuit two, for the first and second breaker closings; Export the action connection point of jumping, closing bus, divide for bus, close a floodgate.
The invention allows for a kind of spare power automatic switching method being applicable to double bus scheme: when a supply line runs, another supply line is for subsequent use, circuit breaker and the bus of working line are in closing position, the circuit breaker of extension wire is in open position, when working line fault dead electricity, extension wire puts into operation in short-term, thus reduces the interruption duration of transformer station, reduces loss of outage; Or, Liang Tiao supply line is respectively with one section of bus to run, the circuit breaker of Liang Tiao supply line is all in closing position, bus is in open position, wherein when supply line's fault dead electricity, bus puts into operation combined floodgate in short-term, thus reduces the interruption duration of another bus institute on-load, reduces loss of outage.
The present invention has following beneficial effect: the backup auto-activating device in the present invention and method can the stand-by power supplies that puts into operation in the transformer station of double bus scheme fast and safely, operational mode and dead electricity situation is judged by device, reduce the time that operations staff's manual operation checks, effective minimizing interruption duration, reduces loss of outage.
Accompanying drawing explanation
Fig. 1 is the double bus scheme schematic diagram of transformer station of the present invention.
Fig. 2 is backup auto-activating device current/voltage circuit wiring diagram of the present invention.
Fig. 3 is backup auto-activating device input circuit winding diagram of the present invention.
Fig. 4 is backup auto-activating device output loop winding diagram of the present invention.
Reference numeral implication is as follows:
1 circuit 1 circuit 23 bus branch road 4II bus PT branch road 5I bus PT branch road 6110kVII bus 7110kVI bus 8 alternating current loop 9 switches rear PT12 circuit two without stream criterion 10 ac voltage circuit 11 circuit one and switches rear PT13 inlet wire one PT14 inlet wire two PT15 input circuit 16 common port 17 charge protection and drop into 18 other TWJ24 mother TWJ25 mother KKJ26 mother HWJ27 lockings of other TWJ21 inlet wires two of inlet wire one TWJ19 inlet wire one KKJ20I bus TWJ22 inlet wire two KKJ23II bus and haul oneself willingly into 28 input optocoupler 29 switching inlet wires 1 and jump into line 1 and close inlet wire 1 and jump into line one for subsequent use 33 and close inlet wire one 34 switching inlet wires 2 35 for subsequent use and jump into line 2 36 and close inlet wire 2 37 and jump into line two for subsequent use 38 and close inlet wires two for subsequent use 39 and jump mothers 40 and close mother 41110kV circuit 1 protection screen 42110kV circuit 2 protection screen
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and it only for explaining the present invention, and can not be interpreted as limitation of the present invention.
For the 110kV transformer station of double bus scheme, only there are two 110kV line powerings and under not allowing the condition of paired running, the prepared auto restart of double bus scheme of the present invention comprises following two kinds of fundamental types: (1) is run when a circuit, bus is in closing position, article one, when circuit is for subsequent use, can ensure that extension wire puts into operation in short-term when working line fault dead electricity, reduce the interruption duration of transformer station, reduce loss of outage; (2) when two circuits run, each band one section of bus, bus is in open position, can ensure wherein a line fault dead electricity when, mother puts into operation in short-term, reduces the interruption duration of another bus institute on-load, reduces loss of outage.
Fig. 1 shows transformer station of the present invention double bus scheme schematic diagram.As shown in Figure 1, backup auto-activating device of the present invention at least comprises Liang Tiao supply line 1,2, Liang Tiao supply line 1,2 is for subsequent use each other, and supply line 1 is connected with I bus 7 and II bus 6 respectively by circuit breaker 1DL, and supply line 2 is connected with I bus 7 and II bus 6 respectively by circuit breaker 2DL; Be connected by bus 3DL between I bus 7 and II bus 6; The inlet wire side of supply line 1 and supply line 2 is respectively arranged with voltage transformer VT51 and VT61 for detecting primary voltage, and supply line 1 and supply line 2 are also provided with current transformer for detecting the electric current of Liang Tiao supply line; I bus and II bus are respectively arranged with voltage transformer VT71 and VT81 for detecting the three-phase voltage on bus.
Below with reference to Fig. 1, working method of the present invention is described, the voltage wherein after circuit 1 switching is called voltage 1, and the voltage after circuit 2 switches is called voltage 2.According to above mentioned two kinds of fundamental types, the present invention has following four kinds of modes, wherein, mode one and the corresponding fundamental type of mode two (1), mode three and the corresponding fundamental type of mode four (2):
Mode one: circuit 1 runs, circuit 2 is for subsequent use, and circuit breaker 1DL, bus 3DL are in co-bit, and circuit breaker 2DL is in a point position.Voltage 1, voltage 2 all three-phase have pressure, and the primary voltage instrument transformer VT61 of circuit 2 has pressure, and after charging complete, when voltage 1, voltage 2 are all with no pressure, circuit 2VT61 has pressure, and I1 starts without stream, through time delay, and tripping circuit breaker 1DL.After confirming circuit breaker 1DL tripping, and voltage 1, voltage 2 are all with no pressure, close circuit breaker 2DL through time delay.
Mode two: circuit 2 runs, circuit 1 is for subsequent use, and circuit breaker 2DL, bus 3DL are in co-bit, and circuit breaker 1DL is in a point position.Voltage 1, voltage 2 all three-phase have pressure, and the primary voltage instrument transformer VT51 of circuit 1 has pressure, and after charging complete, when voltage 1, voltage 2 are all with no pressure, circuit 1VT51 has pressure, and I2 starts without stream, through time delay, and tripping circuit breaker 2DL.After confirming circuit breaker 2DL tripping, and voltage 1, voltage 2 are all with no pressure, close circuit breaker 1DL through time delay.
Mode three: circuit 1 and circuit 2 be band one section of bus respectively, circuit breaker 1DL, 2DL are in co-bit, and bus 3DL is in a point position.Voltage 1, voltage 2 all three-phase have pressure, and after charging complete, when voltage 1 is with no pressure, voltage 2 has pressure, and I1 starts without stream, through time delay, and tripping circuit breaker 1DL.After confirming circuit breaker 1DL tripping, and voltage 1 is with no pressure, closes bus 3DL through time delay.
Mode four: circuit 1 and circuit 2 be band one section of bus respectively, circuit breaker 1DL, 2DL are in co-bit, and bus 3DL is in a point position.Voltage 1, voltage 2 all three-phase have pressure, and after charging complete, when voltage 2 is with no pressure, voltage 1 has pressure, and I2 starts without stream, through time delay, and tripping circuit breaker 2DL.After confirming circuit breaker 2DL tripping, and voltage 2 is with no pressure, closes bus 3DL through time delay.Prepared auto restart is not thrown under single female operational mode.
Fig. 2 shows backup auto-activating device current/voltage circuit wiring diagram of the present invention.Wherein, the voltage U a1 after crush-cutting, Ub1, Uc1, Ua2, Ub2, Uc2 access device are used for having pressure, differentiation with no pressure; Meanwhile, two sections of primary voltages Ux1, Ux2 are introduced as the assistant criteria hauling oneself willingly into preparation and action; Each service entrance switch respectively introduces phase current I1, an I2, is to cause backup auto-activating device malfunction after preventing PT (voltage transformer) three-phase from breaking, and is also to confirm service entrance switch tripping better.
Fig. 3 shows backup auto-activating device input circuit winding diagram of the present invention.Wherein, device introduces the position contact TWJ of circuit 1, circuit 2 and block switch, differentiates for system operation mode, hauls oneself willingly into and prepares and haul oneself willingly into action; Meanwhile, position signalling (attracting from switching manipulation loop) after introducing the conjunction of circuit 1, circuit 2 and block switch, jumps locking as the hand hauled oneself willingly under various ruuning situation.Also be provided with specially in addition the locking of single maternal formula standby throw hard pressing plate open into.
Fig. 4 shows backup auto-activating device output loop winding diagram of the present invention.Wherein, device output contact has the contact of each two pairs of actions simultaneously of jumping circuit 1, circuit 2, for tripping circuit breaker 1DL, 2DL.Export the contact of zygonema road 1, each two pairs of self contained functions of circuit 2, close a floodgate for circuit breaker 1DL and 2DL.Export the action connection point of jumping, closing bus, divide for bus 3DL, close a floodgate.
Proposed above-mentioned specific implementation is only exemplary, not as limiting the scope of the present invention.Those skilled in the art can make corresponding adjustment and change to above-mentioned implementation as the case may be, and these adjustment and change also fall within the scope of protection of the present invention.
Claims (6)
1. one kind is applicable to the backup auto-activating device of double bus scheme, at least comprise Liang Tiao supply line, Liang Tiao supply line is for subsequent use each other, supply line one is at least connected with I bus and II bus respectively by the first circuit breaker, and supply line two is at least connected with I bus and II bus respectively by the second circuit breaker; Be connected by bus between I bus and II bus; The inlet wire side of supply line one and supply line two is respectively arranged with voltage transformer for detecting primary voltage, and supply line one and supply line two are also provided with current transformer for detecting the electric current of Liang Tiao supply line; I bus and II bus are respectively arranged with voltage transformer for detecting the three-phase voltage on bus; This device also comprises current/voltage loop, input circuit and output loop, and wherein current/voltage loop is for introducing current and voltage signals, input circuit for introducing the position contact of each switch, output loop be used for circuit breaker point, close a floodgate.
2. backup auto-activating device according to claim 1, is characterized in that: in described current/voltage loop, and the voltage access device after crush-cutting is used for having pressure, differentiation with no pressure, and the voltage wherein after crush-cutting is detected by the voltage transformer on bus and obtains; Introduce two sections of primary voltages as the assistant criteria hauling oneself willingly into preparation and action, wherein two sections of primary voltages are detected by the voltage transformer of the inlet wire side of supply line one, circuit two and obtain; Each service entrance switch respectively introduces a phase current, is to cause backup auto-activating device malfunction after preventing voltage transformer three-phase from breaking, and wherein this electric current is detected by the current transformer on supply line one, circuit two and obtains.
3. backup auto-activating device according to claim 1, is characterized in that: in described input circuit, introduces the position contact of supply line one, circuit two and block switch, differentiates for system operation mode, hauls oneself willingly into and prepares and haul oneself willingly into action; Introduce position signalling after the conjunction of supply line one, circuit two and block switch, jump locking as the hand hauled oneself willingly under various ruuning situation.
4. backup auto-activating device according to claim 1, is characterized in that: in described output loop, and the contact of device output contact You Tiao supply line one, each two pairs of actions simultaneously of circuit two, for tripping first and second circuit breaker; Export the contact closing supply line one, each two pairs of self contained functions of circuit two, for the first and second breaker closings; Export the action connection point of jumping, closing bus, divide for bus, close a floodgate.
5. one kind is applicable to the spare power automatic switching method of double bus scheme, adopt the backup auto-activating device described in any one in claim 1-4, it is characterized in that: when a supply line runs, another supply line is for subsequent use, and circuit breaker and the bus of working line are in closing position, and the circuit breaker of extension wire is in open position, when working line fault dead electricity, extension wire puts into operation in short-term, thus reduces the interruption duration of transformer station, reduces loss of outage.
6. one kind is applicable to the spare power automatic switching method of double bus scheme, adopt the backup auto-activating device described in any one in claim 1-4, it is characterized in that: Liang Tiao supply line is respectively with one section of bus to run, the circuit breaker of Liang Tiao supply line is all in closing position, bus is in open position, and wherein when supply line's fault dead electricity, bus puts into operation combined floodgate in short-term, thus reduce the interruption duration of another bus institute on-load, reduce loss of outage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807077.4A CN105375611A (en) | 2015-11-19 | 2015-11-19 | Automatic bus transfer equipment and method applicable to double-bus connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807077.4A CN105375611A (en) | 2015-11-19 | 2015-11-19 | Automatic bus transfer equipment and method applicable to double-bus connection |
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| CN105375611A true CN105375611A (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510807077.4A Pending CN105375611A (en) | 2015-11-19 | 2015-11-19 | Automatic bus transfer equipment and method applicable to double-bus connection |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451087A (en) * | 2016-07-12 | 2017-02-22 | 四川电器集团股份有限公司 | 12kV double bus switchgear control system and switching control method |
| CN107329027A (en) * | 2017-05-26 | 2017-11-07 | 广西电网有限责任公司 | Suitable for the double-bus prepared auto restart TV broken string method of discrimination of underloading |
| CN109245101A (en) * | 2018-11-13 | 2019-01-18 | 国网四川省电力公司天府新区供电公司 | The method for promoting statements based on collusion substation's power supply reliability |
| CN110829391A (en) * | 2019-11-28 | 2020-02-21 | 国网江苏省电力有限公司镇江供电分公司 | 110kV line disconnection protection method matched with spare power automatic switching and application |
| CN112327153A (en) * | 2020-11-02 | 2021-02-05 | 国网山东省电力公司临朐县供电公司 | Spare power automatic switching analog circuit breaker test device and use method |
| CN112904134A (en) * | 2020-10-16 | 2021-06-04 | 国网山东省电力公司金乡县供电公司 | Uninterrupted power verification device for spare power automatic switching device, spare power automatic switching device and method |
| CN114614447A (en) * | 2022-03-18 | 2022-06-10 | 国网伊犁伊河供电有限责任公司 | Action logic judgment method of spare power automatic switching device adaptive to double buses |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451087A (en) * | 2016-07-12 | 2017-02-22 | 四川电器集团股份有限公司 | 12kV double bus switchgear control system and switching control method |
| CN107329027A (en) * | 2017-05-26 | 2017-11-07 | 广西电网有限责任公司 | Suitable for the double-bus prepared auto restart TV broken string method of discrimination of underloading |
| CN107329027B (en) * | 2017-05-26 | 2019-08-27 | 广西电网有限责任公司 | Double-bus prepared auto restart TV broken string method of discrimination suitable for underloading |
| CN109245101A (en) * | 2018-11-13 | 2019-01-18 | 国网四川省电力公司天府新区供电公司 | The method for promoting statements based on collusion substation's power supply reliability |
| CN110829391A (en) * | 2019-11-28 | 2020-02-21 | 国网江苏省电力有限公司镇江供电分公司 | 110kV line disconnection protection method matched with spare power automatic switching and application |
| CN112904134A (en) * | 2020-10-16 | 2021-06-04 | 国网山东省电力公司金乡县供电公司 | Uninterrupted power verification device for spare power automatic switching device, spare power automatic switching device and method |
| CN112327153A (en) * | 2020-11-02 | 2021-02-05 | 国网山东省电力公司临朐县供电公司 | Spare power automatic switching analog circuit breaker test device and use method |
| CN114614447A (en) * | 2022-03-18 | 2022-06-10 | 国网伊犁伊河供电有限责任公司 | Action logic judgment method of spare power automatic switching device adaptive to double buses |
| CN114614447B (en) * | 2022-03-18 | 2023-11-21 | 国网伊犁伊河供电有限责任公司 | Action logic discrimination method of backup automatic switching device suitable for double buses |
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Application publication date: 20160302 |
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