CN104485732A - In-put control method for standby powers of transformer substations - Google Patents
In-put control method for standby powers of transformer substations Download PDFInfo
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- CN104485732A CN104485732A CN201410802521.9A CN201410802521A CN104485732A CN 104485732 A CN104485732 A CN 104485732A CN 201410802521 A CN201410802521 A CN 201410802521A CN 104485732 A CN104485732 A CN 104485732A
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Abstract
The invention provides an in-put control method for standby powers of transformer substations. The method comprises the following steps: determining the connection form of a busbar according to a set logic two-dimensional table; determining the states of a circuit and a busbar tie/section switch before and after an automatic bus transfer device is logically started; under the condition of normal operation, when the circuit or the busbar tie/section switch in a standby supply station exists, permitting the automatic bus transfer device to charge; in the charging state, if starting conditions are met, starting the automatic bus transfer device after a delay; after the automatic bus transfer device is started in the charging state, performing corresponding actions according to action logic. The method can be suitable for different connection forms of transformer substations, can cover the connection form of the current transformer substation, and is not limited by any running way of the transformer substations. The method selects a standby switch which can be closed to transfer according to the determined automatic bus transfer priority order for the circuit and the busbar tie/section switch, and restores power supply of a no-voltage busbar to enable the no-voltage busbar to adapt to the demand of the current power grid.
Description
Technical field
The present invention relates to electric power network technique field, particularly relate to a kind of in-put of spare power supply control method of transformer station.
Background technology
The in-put of spare power supply control method of traditional transformer station, as 220kV or 110kV transformer station, is all be divided into circuit backup power automatic switching and mother (segmentation) prepared auto restart according to the operational mode difference of transformer station.Circuit backup power automatic switching mainly considers that each section of bus is when paired running, and part circuit is as main power supply, and another part circuit is as available power supply, when main power supply line fault causes substation power loss, first isolated fault, then drop into available power circuit, recover the power supply of whole decompression transformer station; Mother (segmentation) prepared auto restart mainly considers that bus is when fanout operation, by different main power supply line powering, when the main power supply fault of wherein one section of bus, first isolated fault, mother of closing again (segmentation) switch, recovers the power supply of decompression bus.The in-put of spare power supply method of this differentiation circuit backup power automatic switching and mother (segmentation) prepared auto restart is limited to substation operation mode, and can not exist simultaneously.In transformer station's scale, the standby and two sections of buses of general only consideration circuit one main, can not meet the demand of large-scale substation.
In recent years, along with the expansion of transformer station's scale and the raising to power supply reliability requirement, same transformer station may introduce multiple power circuit; Because of the needs that power system operating mode arranges, the situation of multistage bus fanout operation also may be there is.When there is circuit stand-by power supply and bus fanout operation time, in-put of spare power supply control must consider that circuit backup power automatic switching and mother (segmentation) prepared auto restart all exist situation, and can not while action; And the in-put of spare power supply control mode of traditional transformer station, the relation between circuit backup power automatic switching or mother (segmentation) prepared auto restart cannot be handled well, cause backup auto-activating device on using, be limited to the limitation of substation bus bar wiring patterns and operational mode arrangement, be difficult to adapt to current electric grid needs.
Summary of the invention
Based on this, be necessary for above-mentioned technical problem, the new method that a kind of in-put of spare power supply of transformer station controls is provided, do not distinguish the situation of circuit backup power automatic switching and mother/segmentation prepared auto restart, take bus loss of pressure as blasting fuse, select the available element being in state of can throwing after starting to close and recover the power supply of decompression bus.
An in-put of spare power supply control method for transformer station, comprises the steps:
Step (1), according to the wiring patterns of the logic bivariate table determination bus arranged; Wherein, the corresponding relation of the mother/block switch of described logic bivariate table record bus;
Step (2), determines circuit and the state of mother/block switch before backup auto-activating device logic starts and after starting;
State before startup comprises: what be directed to that circuit and mother/block switch arranges respectively is main for state, available state, inspecting state and can not available state;
State after startup comprises: be in the circuit of available state before being directed to startup respectively, thrown state that mother/block switch is arranged and can not throw state;
Step (3), under normal operating conditions, when existence is in circuit or the mother/block switch of available state, then allows backup auto-activating device to charge;
Step (4), in the charge state, if entry condition is all satisfied, starts backup auto-activating device after certain time-delay; Wherein, entry condition comprises:
1. at least one section of busbar voltage is less than and sentences voltage starting definite value;
2. have the non-charge circuit of non-maintenance without stream and its switch after voltage be less than and sentence voltage starting definite value, or the mother of decompression bus side/block switch tripping;
Step (5), after backup auto-activating device starts in the charge state, performs corresponding action according to action logic.
The in-put of spare power supply control method of above-mentioned transformer station, the transformer station of different wiring patterns can be adapted to, the wiring patterns of current transformer substation can be covered, when transformer station is whole lose power supply or part bus lose power supply time, not by the restriction of any operational mode of transformer station, standby priority orders of throwing according to determining circuit and mother/block switch selects to close the backup circuit breaker that can throw, and recovers the power supply of decompression bus, adapts to current electric grid needs.
Accompanying drawing explanation
Fig. 1 is the in-put of spare power supply control method flow chart of transformer station of the present invention;
Fig. 2 is an incomplete two female two section wiring figure.
Embodiment
Be described in detail below in conjunction with the embodiment of accompanying drawing to the in-put of spare power supply control method of transformer station of the present invention.
Control method of the present invention is that stand-by power supply circuit and mother/block switch for subsequent use (representing bus connection switch or block switch) are used as the process of an available element all respectively, be that each element arranges one and standbyly throws priority according to predetermined standby sequence of surrendering and pledging allegiance in advance, when bus loss of pressure, recover the power supply of decompression bus according to for throwing closing for throwing element of can throwing after priority orders selects startup; Throw available element if multiple and be in same priority, then close when selected simultaneously, be not limited to the operational mode in transformer station.This method according to " maximization " principle, with the transformer station of the two section wiring pattern of two mother for model designs, the transformer station of the two female single segmentation of simultaneous adaptation, two mother, single mother partition, single female wiring patterns.
Shown in figure 1, Fig. 1 is the in-put of spare power supply control method flow chart of transformer station of the present invention, comprises the steps:
Step (1), according to the wiring patterns of the logic bivariate table determination bus arranged; Wherein, the corresponding relation of the mother/block switch of described logic bivariate table record bus.
As a kind of execution mode, for the method to set up of logic bivariate table, can be as follows:
Under different bus wiring patterns, the bus of in esse mother/block switch both sides is associated, and set on the position of correspondence, otherwise reset; Wherein, then judge according to the corresponding bus of this logic bivariate table when judging mother/block switch two side bus voltage in prepared auto restart logic.
If mother/block switch and arbitrary the equal onrelevant of bus, then think that this mother/block switch does not exist, if bus and the equal onrelevant of any one mother/block switch, then think that this bus does not exist.
Shown in reference table 1, table 1 is the logic bivariate table of the wiring patterns definition of a bus, and in table, each mother/block switch, bus title can be named according to physical cabling.Table 1 defines bus wiring patterns can shown in reference diagram 2, and Fig. 2 is an incomplete two female two section wiring figure, there is shown associated section.
Table 1
Step (2), determines circuit and the state of mother/block switch before backup auto-activating device logic starts and after starting;
State before startup comprises: what be directed to that circuit and mother/block switch arranges respectively is main for state, available state, inspecting state and can not available state.
As an embodiment, the state before startup specifically can be expressed as follows:
The main of circuit is defined as state:
1. the maintenance pressing plate of circuit is in exit status;
2. line switching is in co-bit;
3. after circuit switching, voltage is more than or equal to and sentences element and have compression set value;
4. non-charge circuit;
The available state of circuit is defined as:
1. the maintenance pressing plate of circuit is in exit status;
2. line switching is in a point position;
3. after circuit switching, voltage is more than or equal to and sentences element and have compression set value;
4. circuit PT measuring voltage is more than or equal to and sentences element and have compression set value;
5. the standby priority of throwing of circuit is non-zero;
The inspecting state of circuit is defined as: the maintenance pressing plate of corresponding line drops into;
Can not available state being defined as of circuit: circuit does not meet main confession, can standbyly throw or inspecting state;
The main of mother/block switch is defined as state: mother/block switch maintenance pressing plate exit and mother/block switch in co-bit.
The available state of mother/block switch is defined as:
1. the maintenance pressing plate of mother/block switch is in exit status;
2. mother/block switch is in a point position;
The bus of 3. mother/block switch both sides all has pressure;
4. the standby priority of throwing of mother/block switch is non-zero;
The inspecting state of mother/block switch is defined as: corresponding mother/block switch maintenance pressing plate drops into;
Can not available state being defined as of mother/block switch: mother/block switch do not meet run, maintenance, can standby throwing state.
For the ease of read above-mentioned circuit and mother/block switch start before state, can shown in reference table 2,
Table 2
State after startup comprises: be in the circuit of available state before being directed to startup respectively, thrown state that mother/block switch is arranged and can not throw state;
As an embodiment, the state after startup specifically can be expressed as follows:
Circuit can the state of throwing be defined as:
1. available state is in before starting;
2. after circuit switching, voltage is less than and sentences element definite value with no pressure;
3. circuit PT measuring voltage is more than or equal to and sentences element and have compression set value;
Can not the state of throwing being defined as of circuit: circuit is discontented can throw state completely;
The thrown state of mother/block switch is defined as:
1. available state is in before starting;
2. mother/You Ya side, block switch side is with no pressure;
Can not the state of throwing being defined as of mother/block switch: mother/block switch is discontented can throw state completely.
Further, the state after startup, throws the identical and satisfied mother/block switch throwing state of priority, drops into when priority is selected simultaneously if standby.
For the ease of read above-mentioned circuit and mother/block switch start after state, can shown in reference table 3,
Table 3
Step (3), under normal operating conditions, when existence is in circuit or the mother/block switch of available state, then runs backup auto-activating device and charges;
Step (4), in the charge state, if entry condition is all satisfied, starts backup auto-activating device after certain time-delay; Wherein, entry condition comprises:
1. at least one section of busbar voltage is less than and sentences voltage definite value (U with no pressure
2);
2. have the non-charge circuit of non-maintenance without stream and its switch after voltage be less than and sentence voltage definite value (U with no pressure
2), or the mother of decompression bus side/block switch tripping;
Step (5), after backup auto-activating device starts in the charge state, performs corresponding action according to action logic.
After backup auto-activating device starts in the charge state, concrete course of action comprises as follows:
First isolated fault point, tripping without flowing the non-charge circuit of non-available with no pressure, then excises small power supply; Then the circuit or mother/block switch that can throw state is in after selecting to close startup according to priority orders; If can throw after the circuit of state or mother/block switch sent out order of closing a floodgate, decompression busbar voltage is not recovered, then continue close next priority low and start after be in the circuit or mother/block switch that can throw state, until decompression busbar voltage recover, and put on record automatic bus action success; If after all backup auto-activating devices starts, after the mother/block switch being in state of can throwing all is closed a floodgate, the voltage of decompression bus does not also recover, then put automatic bus baulk on record.
The in-put of spare power supply control method of the transformer station of above-described embodiment, the transformer station of different wiring patterns can be adapted to, comprise the transformer station of two female two segmentation, the single segmentation of two mother, two mother, single mother partition, single female and associated band bypass, the wiring patterns of current transformer substation can be covered, the problem of good solution backup auto-activating device logical criteria, to the transformer station of different bus wiring patterns, there is good versatility, facilitate the management of backup auto-activating device, no longer distinguish circuit backup power automatic switching or mother/segmentation prepared auto restart.When transformer station is whole lose power supply or part bus lose power supply time, not by the restriction of substation operation mode, standby priority orders of throwing according to determining circuit and mother/block switch selects to close the backup circuit breaker that can throw, recover the power supply of decompression bus, solve the limitation that traditional backup auto-activating device is limited to substation bus bar wiring patterns and operational mode arrangement on using, adapt to current electric grid needs.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (6)
1. an in-put of spare power supply control method for transformer station, is characterized in that, comprise the steps:
Step (1), according to the wiring patterns of the logic bivariate table determination bus arranged; Wherein, the corresponding relation of the mother/block switch of described logic bivariate table record bus;
Step (2), determines circuit and the state of mother/block switch before backup auto-activating device logic starts and after starting;
State before startup comprises: what be directed to that circuit and mother/block switch arranges respectively is main for state, available state, inspecting state and can not available state;
State after startup comprises: be in the circuit of available state before being directed to startup respectively, thrown state that mother/block switch is arranged and can not throw state;
Step (3), under normal operating conditions, when existence is in circuit or the mother/block switch of available state, then allows backup auto-activating device to charge;
Step (4), in the charge state, if entry condition is all satisfied, starts backup auto-activating device after certain time-delay; Wherein, entry condition comprises:
1. at least one section of busbar voltage is less than and sentences voltage starting definite value;
2. have the non-charge circuit of non-maintenance without stream and its switch after voltage be less than and sentence voltage starting definite value, or the mother of decompression bus side/block switch tripping;
Step (5), after backup auto-activating device starts in the charge state, performs corresponding action according to action logic.
2. the in-put of spare power supply control method of transformer station according to claim 1, is characterized in that, the corresponding action of execution in described step (5) comprises:
First isolated fault point, tripping without flowing the non-charge circuit of non-available with no pressure, then excises small power supply; Then the circuit or mother/block switch that can throw state is in after selecting to close startup according to priority orders;
If can throw after the circuit of state or mother/block switch sent out order of closing a floodgate, decompression busbar voltage is not recovered, then continue close next priority low and start after be in the circuit or mother/block switch that can throw state, until decompression busbar voltage recover, and put on record automatic bus action success; If after all backup auto-activating devices starts, after the mother/block switch being in state of can throwing all is closed a floodgate, the voltage of decompression bus does not also recover, then put automatic bus baulk on record.
3. the in-put of spare power supply control method of transformer station according to claim 1 and 2, is characterized in that, the method to set up of the described logic bivariate table in step (1) comprises:
Under different bus wiring patterns, the bus of in esse mother/block switch both sides is associated, and set on the position of correspondence, otherwise reset;
If mother/block switch and arbitrary the equal onrelevant of bus, then think that this mother/block switch does not exist, if bus and the equal onrelevant of any one mother/block switch, then think that this bus does not exist.
4. the in-put of spare power supply control method of transformer station according to claim 1 and 2, is characterized in that, the state before starting in step (2),
The main of circuit is defined as state:
1. the maintenance pressing plate of circuit is in exit status;
2. line switching is in co-bit;
3. after circuit switching, voltage is more than or equal to and sentences element and have compression set value;
4. non-charge circuit;
The available state of circuit is defined as:
1. the maintenance pressing plate of circuit is in exit status;
2. line switching is in a point position;
3. after circuit switching, voltage is more than or equal to and sentences element and have compression set value;
4. circuit PT measuring voltage is more than or equal to and sentences element and have compression set value;
5. the standby priority of throwing of circuit is non-zero;
The inspecting state of circuit is defined as: the maintenance pressing plate of corresponding line drops into;
Can not available state being defined as of circuit: circuit does not meet main confession, can standbyly throw or inspecting state;
The main of mother/block switch is defined as state: mother/block switch maintenance pressing plate exit and mother/block switch in co-bit.
The available state of mother/block switch is defined as:
1. the maintenance pressing plate of mother/block switch is in exit status;
2. mother/block switch is in a point position;
The bus of 3. mother/block switch both sides all has pressure;
4. the standby priority of throwing of mother/block switch is non-zero;
The inspecting state of mother/block switch is defined as: corresponding mother/block switch maintenance pressing plate drops into;
Can not available state being defined as of mother/block switch: mother/block switch do not meet run, maintenance, can standby throwing state.
5. the in-put of spare power supply control method of transformer station according to claim 4, is characterized in that, the state after starting in step (2),
Circuit can the state of throwing be defined as:
1. available state is in before starting;
2. after circuit switching, voltage is less than and sentences element definite value with no pressure;
3. circuit PT measuring voltage is more than or equal to and sentences element and have compression set value;
Can not the state of throwing being defined as of circuit: circuit is discontented can throw state completely;
The thrown state of mother/block switch is defined as:
1. available state is in before starting;
2. mother/You Ya side, block switch side is with no pressure;
Can not the state of throwing being defined as of mother/block switch: mother/block switch is discontented can throw state completely.
6. the in-put of spare power supply control method of transformer station according to claim 5, it is characterized in that, state after starting in step (2), throws the identical and satisfied mother/block switch throwing state of priority, drops into when priority is selected simultaneously if standby.
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| CN201410802521.9A CN104485732B (en) | 2014-12-17 | 2014-12-17 | In-put control method for standby powers of transformer substations |
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| CN201410802521.9A CN104485732B (en) | 2014-12-17 | 2014-12-17 | In-put control method for standby powers of transformer substations |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429141A (en) * | 2015-12-16 | 2016-03-23 | 广东电网有限责任公司中山供电局 | Control method and system for substation bus from independent operation to parallel operation |
| CN105552884A (en) * | 2015-12-16 | 2016-05-04 | 广东电网有限责任公司中山供电局 | Method and system for controlling double-busbar substation from parallel operation to split operation |
| CN109861218A (en) * | 2019-03-14 | 2019-06-07 | 深圳供电局有限公司 | A kind of 10kV backup auto-activating device |
| CN111030289A (en) * | 2019-12-27 | 2020-04-17 | 深圳供电局有限公司 | Self-adaptive standby power supply automatic switching method and device for 220kV double-bus section wiring |
| CN112186881A (en) * | 2020-09-14 | 2021-01-05 | 深圳供电局有限公司 | Optimized switching method and system for automatic switching device of standby power supply |
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| JPS5967833A (en) * | 1982-10-06 | 1984-04-17 | Toshiba Kk | Automatic power source switching device |
| CN101710731A (en) * | 2009-12-07 | 2010-05-19 | 江苏省电力公司丹阳市供电公司 | Control method of concentrated standby power automatic transfer system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5967833A (en) * | 1982-10-06 | 1984-04-17 | Toshiba Kk | Automatic power source switching device |
| CN101710731A (en) * | 2009-12-07 | 2010-05-19 | 江苏省电力公司丹阳市供电公司 | Control method of concentrated standby power automatic transfer system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429141A (en) * | 2015-12-16 | 2016-03-23 | 广东电网有限责任公司中山供电局 | Control method and system for substation bus from independent operation to parallel operation |
| CN105552884A (en) * | 2015-12-16 | 2016-05-04 | 广东电网有限责任公司中山供电局 | Method and system for controlling double-busbar substation from parallel operation to split operation |
| CN105552884B (en) * | 2015-12-16 | 2018-01-16 | 广东电网有限责任公司中山供电局 | Double-bus transformer station by turning the control method and system of fanout operation side by side |
| CN105429141B (en) * | 2015-12-16 | 2018-09-25 | 广东电网有限责任公司中山供电局 | Substation bus bar is turned the control method and system of paired running by point row |
| CN109861218A (en) * | 2019-03-14 | 2019-06-07 | 深圳供电局有限公司 | A kind of 10kV backup auto-activating device |
| CN111030289A (en) * | 2019-12-27 | 2020-04-17 | 深圳供电局有限公司 | Self-adaptive standby power supply automatic switching method and device for 220kV double-bus section wiring |
| CN112186881A (en) * | 2020-09-14 | 2021-01-05 | 深圳供电局有限公司 | Optimized switching method and system for automatic switching device of standby power supply |
| CN112186881B (en) * | 2020-09-14 | 2022-05-31 | 深圳供电局有限公司 | Optimized switching method and system for automatic switching device of standby power supply |
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| CN104485732B (en) | 2017-04-12 |
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Effective date of registration: 20201019 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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