CN106655191A - Load equipartition method and apparatus of backup automatic switching apparatus - Google Patents
Load equipartition method and apparatus of backup automatic switching apparatus Download PDFInfo
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- CN106655191A CN106655191A CN201610915904.6A CN201610915904A CN106655191A CN 106655191 A CN106655191 A CN 106655191A CN 201610915904 A CN201610915904 A CN 201610915904A CN 106655191 A CN106655191 A CN 106655191A
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- Prior art keywords
- switch
- load sharing
- backup auto
- activating device
- block switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
Abstract
The invention provides a load equipartition method and apparatus of a backup automatic switching apparatus. The method comprises the following steps: acquiring electrical information of a circuit which the backup automatic switching apparatus itself belongs to; determining whether load equipartition motion signals sent by another backup automatic switching apparatus are received; if so, when it is determined that buses at the two sides of a section switch satisfy same-period closing conditions according to the electrical information, sending a switch switching-on instruction for switching on the section switch; and after the section switch is switched on, sending a switch switching-off instruction for tripping off a first branch switch which is at an intermediate main transformer low-voltage side and is connected with the section switch. The method and apparatus can avoid bus short-time under-voltage, reduce load loss and improve the power supply reliability of a power grid.
Description
Technical field
The present invention relates to Power System and its Automation technical field, more particularly to a kind of load sharing of backup auto-activating device
Method and device.
Background technology
In general, as shown in figure 1, being configured with 220kV the or 110kV step-down substations of 3 main transformers, the change of middle main transformer
Downside is configured by biswitch, each respectively to supply one section of bus, specially the second bus 2M and triple bus-bar 3M.Conventional operation mode
Under, first switch device 1DL (side main transformer is the switching device for becoming downside connection of #1 main transformers), second switch device 2DL are (middle
Main transformer be 2# main transformers become downside connection two switching devices in one), the 3rd switching device 3DL (middle main transformer i.e. 2#
Main transformer become downside connection two switching devices in another) and the 4th switching device 4DL (another side main transformer is #3 main transformers
The switching device for becoming downside connection) in closure state, i.e. conjunction position state；Two block switches：First block switch 5DL and
Second block switch 6DL is off, that is, divide a state；Per edge of table main transformer respectively with one section of bus, the first block switch
5DL and the second block switch 6DL are respectively configured a set of 10kV backup auto-activating devices.
The load sharing method of traditional backup auto-activating device, if side main transformer is #1 transformer trippings, the first bus 1M decompressions are matched somebody with somebody
The backup auto-activating device tripping first switch device 1DL of the first block switch 5DL is placed in, close the first block switch 5DL, Ran Houfa
Load sharing signal is sent to the backup auto-activating device of the second block switch 6DL；The backup auto-activating device of the second block switch 6DL is received
After load sharing action signal, disconnection be connected with the second block switch 6DL and middle main transformer the become that downside connects the 3rd is switched
Device 3DL, after confirming that switching device 3DL disconnects, then the second block switch 6DL switches that close, so as to realize load sharing work(
Energy.
The method can realize that transformer tripping afterload is equally distributed to remaining main transformer and powers, rationally using operation main transformer
Power supply capacity, realize Optimal Allocation of Resources.But the problem that the method is present is be configured at the second block switch 6DL standby
Automatic bus first disconnect the second block switch 6DL that closes again after the 3rd switching device 3DL, can cause to connect the 3rd switching device
The triple bus-bar 3M of 3DL decompressions in short-term, if triple bus-bar 3M institutes on-load is furnished with low pressure trip device, it would be possible to cause load to damage
Lose, electrical network power supply reliability is reduced.
The content of the invention
Based on this, it is necessary to provide a kind of backup auto-activating device that can be reduced load loss, improve electrical network power supply reliability
Load sharing method and device.
A kind of load sharing method of backup auto-activating device, including：
Gather the electric information of the affiliated circuit of itself backup auto-activating device；
Judge whether to receive the load sharing action signal that another backup auto-activating device sends；
If so, then asynchronous switch-on condition is being met according to two side bus of the electric information judgement block switch
When, send and the switch that the block switch closes position is closed into bit instruction；
After the block switch closes position, the of main transformer low-pressure side and block switch connection in the middle of tripping is sent
The switch of one branch switch point bit instruction.
A kind of load sharing device of backup auto-activating device, including：
Electric information acquisition module, for gathering the electric information of the affiliated circuit of itself backup auto-activating device；
Signal receives judge module, for judging whether to receive the load sharing action letter that another backup auto-activating device sends
Number；
Same period condition judgment module, judges that receiving another automatic bus sends for receiving judge module in the signal
Load sharing action signal when, judge that two side bus of the block switch meet asynchronous switch-on bar according to the electric information
Part；
Bit instruction sending module is closed, for when the same period condition judgment module judges to meet asynchronous switch-on condition, sending out
Send and the switch that the block switch closes position is closed into bit instruction；
Point bit instruction sending module, after closing position in the block switch, send in the middle of tripping main transformer low-pressure side and
The switch point bit instruction of the first branch switch of the block switch connection.
The load sharing method and device of above-mentioned backup auto-activating device, gathers the electric letter of the affiliated circuit of itself backup auto-activating device
Breath；Judge whether to receive the load sharing action signal that another backup auto-activating device sends；If so, then according to the electric letter
When breath judges that two side bus of the block switch meet asynchronous switch-on condition, send and close on the switch that the block switch closes position
Bit instruction；After the block switch closes position, the first of tripping centre main transformer low-pressure side and block switch connection is sent
The switch of branch switch point bit instruction.The method and device and being provided without can cause bus in short-term decompression and be likely to result in load damage
The first branch switch of main transformer low-pressure side closes again the load sharing plan of " first divide and close again " of block switch in the middle of tripping lose, first
Slightly, but adopt first close block switch again in the middle of tripping " first close and divide again " of the first branch switch of main transformer low-pressure side load
It is respectively tactful, and in order to realize the load sharing strategy of " first close and divide again ", close on the switch that the block switch closes position sending
Before bit instruction, first judge that two side bus of the block switch meet asynchronous switch-on condition according to the electric information, sentencing
Just send when meeting asynchronous switch-on condition surely and the switch that the block switch closes position is closed into bit instruction.Therefore, the method and device
Bus decompression, reduction load loss in short-term can be avoided, electrical network power supply reliability is improved.
Description of the drawings
Fig. 1 is the circuit diagram of the working environment of the load sharing method of backup auto-activating device；
Fig. 2 is the flow chart of the load sharing method of the backup auto-activating device of an embodiment；
Fig. 3 is the flow chart of the load sharing method of the backup auto-activating device of another embodiment；
Fig. 4 is the particular flow sheet of a step of the load sharing method of backup auto-activating device；
Fig. 5 is the flow chart of the load sharing method of the backup auto-activating device of another embodiment；
Fig. 6 is the structure chart of the load sharing device of the backup auto-activating device of an embodiment；
Fig. 7 is the structure chart of the load sharing device of the backup auto-activating device of another embodiment.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough comprehensive.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that of the invention in limiting.Term as used herein " or/and " include one or more phases
The arbitrary and all of combination of the Listed Items of pass.
As shown in Fig. 2 the present invention provides a kind of load sharing method of backup auto-activating device, the method is run in Fig. 1
On the backup auto-activating device that first block switch 5DL or the second block switch 6DL are configured.If this method operates in the first segmentation and opens
Close on the backup auto-activating device that 5DL is configured, then another backup auto-activating device is filled by the prepared auto restart that the second block switch 6DL is configured
Put；Conversely, if this method is operated on the backup auto-activating device that the second block switch 6DL is configured, another backup auto-activating device is
The backup auto-activating device that first block switch 5DL is configured.The method, including：
S210：Gather the electric information of the affiliated circuit of itself backup auto-activating device.
Fig. 1 is please referred to, if this method is operated on the backup auto-activating device that the first block switch 5DL is configured, should
The affiliated circuit of backup auto-activating device refers to the affiliated circuit of the backup auto-activating device that the first block switch 5DL is configured, backup auto-activating device
Affiliated circuit include while main transformer be #1 main transformers, while main transformer low-pressure side connection main transformer switch device be first switch device 1DL,
Middle main transformer be #2 main transformers, the first branch switch of middle main transformer connection be second switch device 2DL, the of middle main transformer connection
Two branch switches are the 3rd switching device 3DL, the main transformer switch device of connection side main transformer low-pressure side connection and middle main transformer connection
The block switch of the first branch switch supplied by second branch switch of the first block switch 5DL, middle main transformer low-pressure side
The bus that bus is supplied by the main transformer switch device that two side bus of triple bus-bar 3M, block switch are respectively side main transformer low-pressure side
And the bus that the first branch switch of middle main transformer low-pressure side is supplied.Wherein, the main transformer switch device of side main transformer low-pressure side is supplied
Bus be connection segment switch and the first bus 1M of main transformer switch device, the first branch switch institute of middle main transformer low-pressure side
For bus be connection segment switch and the second bus 2M of the first branch switch.If this method operates in the second block switch
Configuration that 6DL is configured is thrown on device, then the affiliated circuit of the backup auto-activating device refer to that the second block switch 6DL configured it is standby from
Throw device affiliated circuit, the affiliated circuit of backup auto-activating device include while main transformer be #2 main transformers, while main transformer low-pressure side connection master
Change switching device into the 4th switching device 4DL, middle main transformer be #2 main transformers, middle main transformer connection the first branch switch be the 3rd
Switching device 3DL, the second branch switch of middle main transformer connection are second switch device 2DL, connection side main transformer low-pressure side connection
Main transformer switch device and the block switch of the first branch switch of middle main transformer connection be the second block switch 6DL, middle main
It is low that the bus that second branch switch of low pressure side is supplied is the second bus 2M, two side bus of block switch are respectively side main transformer
The bus that the main transformer switch device of pressure side is supplied and the bus that the first branch switch of middle main transformer low-pressure side is supplied.Wherein, side
The bus that the main transformer switch device of main transformer low-pressure side is supplied is the 4th bus 4M of connection segment switch and main transformer switch device, in
Between main transformer low-pressure side the bus that supplied of the first branch switch be connection segment switch and the first branch switch triple bus-bar 3M.
In the present embodiment, the three-phase voltage of two side bus of the electric information at least including block switch, phase angle and prolong
When.
S250：Judge whether to receive the load sharing action signal that another backup auto-activating device sends.
When the main transformer switch device of the side main transformer low-pressure side of the affiliated circuit of another backup auto-activating device trips, needs close this
The corresponding block switch of circuit described in backup auto-activating device, and send load sharing action signal.Therefore, needing by prepared auto restart
When device realizes load sharing, the backup auto-activating device that the present invention is run on can receive the negative of another backup auto-activating device transmission
Lotus divides equally action signal.
If so, i.e. if it is determined that receive the load sharing action signal that another backup auto-activating device sends, then execution step
S270。
S270：When two side bus that the block switch is judged according to the electric information meet asynchronous switch-on condition,
Send and the switch that the block switch closes position is closed into bit instruction.
Asynchronous switch-on condition is that the maximum voltage difference in the three-phase voltage of the side bus of block switch two is electric less than the default same period
Pressure difference, maximum phase angle difference are less than default inspection same period phase angle difference definite value, and time delay meets default time delay.Wherein, time delay is preset excellent
Elect 20ms as；Default synchronous voltage difference and default inspection same period phase angle difference definite value are the value according to practical experience setting, Huo Zhewei
The value of default setting.When judging that two side bus meet asynchronous switch-on condition, send close on the switch that block switch closes position immediately
Bit instruction, to control block switch position is closed.
S290：After the block switch closes position, main transformer low-pressure side and block switch connection in the middle of tripping are sent
The first branch switch switch point bit instruction.
After block switch closes position, next step logic can be carried out, send main transformer low-pressure side and block switch in the middle of tripping
The switch of the main transformer switch device of connection point bit instruction, so that main transformer switch device tripping, reaches load sharing, rationally utilizes
The power supply capacity of operation main transformer, the purpose for realizing Optimal Allocation of Resources.
The load sharing method of above-mentioned backup auto-activating device, gathers the electric information of the affiliated circuit of itself backup auto-activating device；Sentence
It is disconnected whether to receive the load sharing action signal that another backup auto-activating device sends；If so, then sentenced according to the electric information
When two side bus of the fixed block switch meet asynchronous switch-on condition, send and refer to the switch conjunction position that the block switch closes position
Order；After the block switch closes position, the first branch of main transformer low-pressure side and block switch connection in the middle of tripping is sent
The switch of switch point bit instruction.The method and being provided without can cause bus in short-term decompression and be likely to result in load loss, first jump
Open middle main transformer low-pressure side the first branch switch close again block switch " first divide and close again " load sharing strategy, but adopt
With first close block switch again in the middle of tripping " first close and divide again " of the first branch switch of main transformer low-pressure side load sharing strategy,
And in order to realize the load sharing strategy of " first close and divide again ", send by the block switch close position switch close bit instruction it
Before, first judge that two side bus of the block switch meet asynchronous switch-on condition according to the electric information, judging to meet same
Just send during phase combined floodgate condition and the switch that the block switch closes position is closed into bit instruction.Therefore, the method can avoid bus short
When decompression, reduce load loss, improve electrical network power supply reliability.
Fig. 3 is referred to, wherein in one embodiment, the switch that the block switch closes position is closed bit instruction by described transmission
The step of after, also include：
S380：Detect whether the block switch closes position.
Can detect whether block switch closes position by detecting the electric characteristic of block switch.
The switch point position of main transformer low-pressure side and the first branch switch of block switch connection in the middle of the transmission tripping
After the instruction of instruction, also include：
S3A0：Whether the state for judging first branch switch is a point position, and divided equally according to judged result output load
As a result.Whether the state that the first branch switch can be judged by judging the electric characteristic of the first branch switch is a point position.If
The on off state of the first branch is judged as a point position, then output load divides equally success；Otherwise, output load respectively fails.
Whether load sharing can be successfully further processed by way of output load success or failure, also may be used
To make user know the result of load sharing by way of output load success or failure.Such as, can be equal by showing load
The mode output load of point success or failure divides equally result.
Fig. 4 is referred to, it is described that the block switch is being judged according to the electric information wherein in one embodiment
When two side bus meet asynchronous switch-on condition, the step of switch that the block switch closes position is closed into bit instruction is sent, including：
S471：Judge that default load sharing first closes whether the definite value divided afterwards is preset value.If so, S473 is then performed；It is no
Then, direct output load respectively fails.
Default load sharing first close the definite value divided afterwards be it is default arrange indicate whether can adopt " first close and divide afterwards "
Strategy carries out the definite value of load sharing.Preset value is that expression can adopt the strategy of " first close and divide afterwards " to carry out determining for load sharing
Value.Can be represented with definite value " 1 " can adopt the strategy of " first close and divide afterwards " to carry out load sharing；Being represented with definite value " 0 " cannot
Load sharing is carried out using the strategy of " first close and divide afterwards ".That is, preset value can be " 1 ".
Thus, can set by way of user preset sets the strategy of " first close and divide afterwards " whether can be adopted to carry out
Load sharing.In the present embodiment, only can set in user can adopt the strategy of " first close and divide afterwards " to carry out load sharing
When, subsequent step could be performed.
If first closing the strategy execution divided afterwards according to load sharing, two sections of buses of detection meet conjunction segmentation after same period condition and open
Close, under the close mode of higher level's electrical link, the success rate of asynchronous switch-on is high, can avoid bus loss of pressure, it also avoid
The load dropout problem caused because of bus loss of pressure, keeps load for electrically continuous.It is weaker, electric for a small amount of higher level's electrical link
Distant website, it is understood that there may be the less high situation of the success rate of asynchronous switch-on, can take and first divide the strategy for closing afterwards.It is logical
Cross default load sharing and first close the definite value divided afterwards, be greatly improved the flexibility of backup auto-activating device load sharing action, can be with
In response to the actual demand of concrete website, optimum load sharing strategy is preset.
S473：Judge whether two side bus of the block switch meet asynchronous switch-on condition according to the electric information.
S475：If it is determined that two side bus of the block switch meet asynchronous switch-on condition, then send and open the segmentation
The switch for closing position closes bit instruction.
It is to be appreciated that if it is determined that two side bus of block switch are unsatisfactory for asynchronous switch-on condition, then will not send will point
Duan Kaiguan closes the switch of position and closes bit instruction, can not perform the step of subsequently carrying out load sharing.
Fig. 5 is referred to, it is described to judge whether to receive the negative of another backup auto-activating device transmission wherein in one embodiment
Before the step of lotus divides equally action signal, i.e., before step S550, also include：
S530：According to the electric information judge the block switch that is configured at the backup auto-activating device and with the segmentation
Whether two side bus of switch meet the standby throwing charge condition of segmentation.
Now, step S550 specifically, when judge the block switch that is configured at the backup auto-activating device and with described point
When two side bus of Duan Kaiguan meet segmentation for charge condition is thrown, judge whether to receive the load that another backup auto-activating device sends
Respectively action signal.
In the present embodiment, electric information also includes the three-phase electricity of two side bus of the state and block switch of block switch
Pressure.Being segmented standby charge condition of throwing is：The three-phase voltage of the bus of block switch both sides is all higher than being preset with pressure definite value, block switch
In a point position state, and meet the requirement of solidification charging time delay.Wherein, being preset with the requirement of pressure definite value and solidification charging time delay is
Empirically determined.
Incorporated by reference to Fig. 1, by taking the backup auto-activating device of the second block switch 6DL as an example, under normal circumstances, it is possible to achieve load is equal
The initial conditions of point function should be：The 4DL of 3DL, #3 main transformer of #2 main transformers powers as main power supply, respectively 3M and 4M, point
Duan Kaiguan 6DL are in a point position.Under this operating condition, the backup auto-activating device of 6DL will throw charged state into segmentation is standby, just may be used
Load sharing function can be realized.
If the three-phase voltage for being unsatisfactory for the side bus of block switch 6DL two is all higher than being preset with the condition of pressure value, illustrate to
Rare one section of bus does not answer action without pressure, now load sharing logic.This is because, if 4M illustrates #3 main transformers without pressure
4DL is off, and #3 main transformers cannot provide power supply, if load sharing action under this kind of operating condition, finally cuts
After 3DL switches 3M is will result directly in without pressure, the consequence of the expanded range that causes the accident；If 3M is illustrated at the 3DL of #2 main transformers without pressure
In off-state, then load sharing function is without the need for action.
If being unsatisfactory for block switch should be at a point condition for position state, illustrate that 3M and 4M have been combined power supply,
Without the need for load sharing function action.
In the present embodiment, only meet simultaneously and judge to receive the load sharing action letter that another backup auto-activating device sends
Number and the block switch that is configured at the backup auto-activating device is judged according to the electric information and with the block switch two
When side bus meet segmentation for charge condition is thrown, subsequent step can be just continued executing with.
It is described to judge whether to receive the load sharing action that another backup auto-activating device sends wherein in one embodiment
After the step of signal, i.e., before step S550, also include：
S540：Whether the attribute for determining whether to receive averaging signals is the state for allowing to receive.
Now, step S550 is specifically, when the state for determining whether to allow the attribute for receiving averaging signals to be that permission is received
When, judge whether to receive the load sharing action signal that another backup auto-activating device sends.
In the present embodiment, the attribute of " whether allowing to receive averaging signals " is provided with, the attribute represents that this method is run
Backup auto-activating device whether can receive respectively action signal, the attribute can by the opening of user's control load sharing function,
To reach whether control backup auto-activating device can carry out the purpose of load sharing operation.The shape for allowing to receive can be represented with " 1 "
State, the state for not allowing to receive is represented with " 0 ".
It is to be appreciated that only receiving in the state and judgement that the attribute for allowing reception averaging signals is permission reception another
During the load sharing action signal that one backup auto-activating device sends, the step of subsequently carrying out load sharing could be continued.
It is described to judge whether to receive the load sharing action that another backup auto-activating device sends wherein in one embodiment
After the step of signal, i.e. step S550 also includes：
S560：The current phasor of the branch road of middle main transformer low-pressure side two is judged according to the electric information and whether is exceeded
Preset value.Specifically, when judging to receive the load sharing action signal of another backup auto-activating device transmission, according to described electric
Information judges the current phasor of the branch road of middle main transformer low-pressure side two and whether exceedes preset value.
In the present embodiment, electric information also includes the electric current of the middle branch road of main transformer low-pressure side two.Judge main in the middle of described
The current phasor of the branch road of low pressure side two and the criterion for whether exceeding preset value are the anti-error conditions of load sharing action.This
The effect of place's preset value is for judging that middle main transformer low-pressure side load should meet negative corresponding to the operation condition of load sharing
Lotus level, it is ensured that the load sharing action signal for receiving is effective.For the backup auto-activating device of side of issuing an order, it is in the standby throwing action of segmentation
Afterwards, whether default respectively action current definite value will be exceeded to judge whether to send load sharing according to the load of middle main transformer low-pressure side
Action signal.Therefore, side backup auto-activating device is made to receive the load sharing action signal that side backup auto-activating device of issuing an order is sent if receiving, i.e.,
Main transformer low-pressure side load in the middle of illustrating should exceed default respectively action current definite value.Consider that analog quantity sampling there may be mistake
Difference, the preset value for receiving the anti-error condition of load sharing action for making side backup auto-activating device can be according to certain of respectively action current definite value
One margin value sets, and the margin value can adjust as 95%, so as to be prevented effectively from backup auto-activating device because sampling error causes tripping
Possibility.Meanwhile, this Rule of judgment also effectively prevent because hardware anomalies cause scleroma point closure formed " load sharing move
The interference of the rub-out signals such as work ", is effectively improved the correctness of device action.
It is to be appreciated that only meet to judge to receive the load sharing action signal that another backup auto-activating device sends simultaneously
And the current phasor of the branch road of middle main transformer low-pressure side two judged according to the electric information and during more than preset value, Cai Nengji
It is continuous to perform subsequent step.
Wherein in one embodiment, please continue to refer to Fig. 5, need to meet simultaneously S530 in Fig. 5, S540, S550,
4 decision conditions of S560, can just continue executing with subsequent step.Preferably, only meet successively S530 in Fig. 5, S540,
4 decision conditions of S550, S560, can just continue executing with subsequent step.
Fig. 6 is referred to, the present invention also provides a kind of prepared auto restart corresponding with the load sharing method of above-mentioned backup auto-activating device
The load sharing device of device, including：
Electric information acquisition module 610, for gathering the electric information of the affiliated circuit of itself backup auto-activating device；
Signal receives judge module 650, for judging whether that the load sharing for receiving another backup auto-activating device transmission is moved
Make signal；
Same period condition judgment module 673, judges to receive another automatic bus for receiving judge module in the signal
During the load sharing action signal of transmission, judge that two side bus of the block switch meet same period conjunction according to the electric information
Lock condition；
Bit instruction sending module 675 is closed, for when the same period condition judgment module judges to meet asynchronous switch-on condition,
Send and the switch that the block switch closes position is closed into bit instruction；
Divide bit instruction sending module 690, after closing position in the block switch, send main transformer low pressure in the middle of tripping
The switch point bit instruction of the first branch switch of side and block switch connection.
The load sharing device of above-mentioned backup auto-activating device, gathers the electric information of the affiliated circuit of itself backup auto-activating device；Sentence
It is disconnected whether to receive the load sharing action signal that another backup auto-activating device sends；If so, then sentenced according to the electric information
When two side bus of the fixed block switch meet asynchronous switch-on condition, send and refer to the switch conjunction position that the block switch closes position
Order；After the block switch closes position, the first branch of main transformer low-pressure side and block switch connection in the middle of tripping is sent
The switch of switch point bit instruction.The device and being provided without can cause bus in short-term decompression and be likely to result in load loss, first jump
Open middle main transformer low-pressure side the first branch switch close again block switch " first divide and close again " load sharing strategy, but adopt
With first close block switch again in the middle of tripping " first close and divide again " of the first branch switch of main transformer low-pressure side load sharing strategy,
And in order to realize the load sharing strategy of " first close and divide again ", send by the block switch close position switch close bit instruction it
Before, first judge that two side bus of the block switch meet asynchronous switch-on condition according to the electric information, judging to meet same
Just send during phase combined floodgate condition and the switch that the block switch closes position is closed into bit instruction.Therefore, the device can avoid bus short
When decompression, reduce load loss, improve electrical network power supply reliability.
Refer to Fig. 7, wherein in one embodiment, also including close position detection module 780, point position judge module 7A0 and
As a result output module 7B0；
Conjunction position detection module 780, for detecting whether the block switch closes position；
Described point of bit instruction sending module 790, detects the block switch and closes position for conjunction position detection module 780
Afterwards, the switch point bit instruction of main transformer low-pressure side and the first branch switch of block switch connection in the middle of tripping is sent；
Described point of position judge module 7A0, for judging whether the state of first branch switch is a point position；
The result output module 7B0, for being divided equally according to the judged result output load of described point of position judge module 7A0
As a result.
Please continue to refer to Fig. 7, also including tactful judge module 771；
The tactful judge module 771, judges to receive another to haul oneself willingly into dress for receiving judge module 750 in the signal
When putting the load sharing action signal of transmission, judge that default load sharing first closes whether the definite value divided afterwards is preset value；
Same period condition judgment module 773, for after the tactful judge module 771 judges that default load sharing is first closed
When the definite value divided is preset value, judge that two side bus of the block switch meet asynchronous switch-on bar according to the electric information
Part.
Continuing with Fig. 7 is participated in, wherein in one embodiment, also including charge condition judge module 730；
The charge condition judge module 730, for being judged to be configured with the backup auto-activating device according to the electric information
In block switch and whether meet with two side bus of the block switch that segmentation is standby to throw charge condition；
The tactful judge module 771, judges to receive another to haul oneself willingly into dress for receiving judge module 750 in the signal
When putting the load sharing action signal of transmission, and the charge condition judge module 730 judgement satisfaction segmentation for charge condition is thrown,
Judge that default load sharing first closes whether the definite value divided afterwards is preset value.
Wherein in one embodiment, also including permission reception state judge module 740；
The permission condition judgment module 740, for judging to meet segmentation for throwing in the charge condition judge module 730
During charge condition, whether the attribute for determining whether to receive averaging signals is the state for allowing to receive；
The signal receives judge module 750, for determining whether to allow to receive in the permission condition judgment module 740
When the attribute of averaging signals is the state for allowing to receive, judge whether that the load sharing for receiving another backup auto-activating device transmission is moved
Make signal；
The tactful judge module 771, judges to receive another to haul oneself willingly into dress for receiving judge module 750 in the signal
When putting the load sharing action signal of transmission, judge that default load sharing first closes whether the definite value divided afterwards is preset value.
Wherein in one embodiment, also including anti-false judgment module 760；
The anti-false judgment module 760, judges to receive another to haul oneself willingly into dress for receiving judge module 750 in the signal
When putting the load sharing action signal of transmission, the electric current of the branch road of middle main transformer low-pressure side two is judged according to the electric information
Whether vector exceedes preset value；
The tactful judge module 771, for judging the middle main transformer low-pressure side two in the anti-false judgment module 760
The current phasor of branch road and during more than preset value, judges that default load sharing first closes whether the definite value divided afterwards is preset value.
Due to the load sharing device of above-mentioned backup auto-activating device and the load sharing method of above-mentioned backup auto-activating device it is corresponding, its
Detail feature is also mutually corresponded to, and and therefore not to repeat here.
Above example only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but can not
Therefore it is 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, multiple deformations and improvement can also be made, these belong to the protection model of the present invention
Enclose.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of load sharing method of backup auto-activating device, it is characterised in that include：
Gather the electric information of the affiliated circuit of itself backup auto-activating device；
Judge whether to receive the load sharing action signal that another backup auto-activating device sends；
If so, then send out when two side bus that the block switch is judged according to the electric information meet asynchronous switch-on condition
Send and the switch that the block switch closes position is closed into bit instruction；
After the block switch closes position, first point of tripping centre main transformer low-pressure side and block switch connection is sent
The switch of Zhi Kaiguan point bit instruction.
2. the load sharing method of backup auto-activating device according to claim 1, it is characterised in that：
It is described to send after the step of switch that the block switch closes position is closed into bit instruction, also include：The detection segmentation is opened
Whether position is closed in pass；
The switch point bit instruction of main transformer low-pressure side and the first branch switch of block switch connection in the middle of the transmission tripping
Instruction after, also include：Whether the state for judging first branch switch is a point position, and according to judged result output load
Respectively result.
3. the load sharing method of backup auto-activating device according to claim 1, it is characterised in that described according to the electricity
When gas information judges that two side bus of the block switch meet asynchronous switch-on condition, send and the block switch is closed into opening for position
The step of closing bit instruction, including：
Judge that default load sharing first closes whether the definite value divided afterwards is preset value；
If so, then according to the electric information judge whether two side bus of the block switch meet asynchronous switch-on condition；
If it is determined that two side bus of the block switch meet asynchronous switch-on condition, then send and the block switch is closed into opening for position
Close bit instruction.
4. the load sharing method of backup auto-activating device according to claim 1, it is characterised in that described to judge whether to receive
To another backup auto-activating device send load sharing action signal the step of before, also include：Judged according to the electric information
The block switch that is configured at the backup auto-activating device and fill with whether two side bus of the block switch meet standby throwing of segmentation
Electric condition.
5. the load sharing method of backup auto-activating device according to claim 1, it is characterised in that described to judge whether to receive
To another backup auto-activating device send load sharing action signal the step of before, also include：Determine whether that reception is divided equally
Whether the attribute of signal is the state for allowing to receive.
6. the load sharing method of backup auto-activating device according to claim 1, it is characterised in that described to judge whether to receive
To after the step of the load sharing action signal that another backup auto-activating device sends, also include：Judged according to the electric information
The current phasor of the branch road of middle main transformer low-pressure side two and whether exceed preset value.
7. the load sharing device of a kind of backup auto-activating device, it is characterised in that include：
Electric information acquisition module, for gathering the electric information of the affiliated circuit of itself backup auto-activating device；
Signal receives judge module, for judging whether to receive the load sharing action signal that another backup auto-activating device sends；
Same period condition judgment module, judges to receive the negative of another automatic bus transmission for receiving judge module in the signal
When lotus divides equally action signal, judge that two side bus of the block switch meet asynchronous switch-on condition according to the electric information；
Bit instruction sending module is closed, for when the same period condition judgment module judges to meet asynchronous switch-on condition, sending will
The block switch closes the switch of position and closes bit instruction；
Point bit instruction sending module, after closing position in the block switch, sends in the middle of tripping main transformer low-pressure side and described
The switch point bit instruction of the first branch switch of block switch connection.
8. the load sharing device of backup auto-activating device according to claim 7, it is characterised in that also including closing position detection mould
Block, point position judge module and result output module；
Conjunction position detection module, for detecting whether the block switch closes position；
Described point of bit instruction sending module, detects the block switch and closes after position for conjunction position detection module, sends
The switch point bit instruction of main transformer low-pressure side and the first branch switch of block switch connection in the middle of tripping；
Described point of position judge module, for judging whether the state of first branch switch is a point position；
The result output module, for dividing equally result according to the judged result output load of described point of position judge module.
9. the load sharing device of backup auto-activating device according to claim 7, it is characterised in that also judge mould including strategy
Block；
The tactful judge module, judges to receive the negative of another automatic bus transmission for receiving judge module in the signal
When lotus divides equally action signal, judge that default load sharing first closes whether the definite value divided afterwards is preset value；
Same period condition judgment module, for the tactful judge module judge default load sharing first close the definite value divided afterwards as
During preset value, judge that two side bus of the block switch meet asynchronous switch-on condition according to the electric information.
10. the load sharing device of backup auto-activating device according to claim 9, it is characterised in that also including charge condition
Judge module；
The charge condition judge module, for the segmentation for judging to be configured at the backup auto-activating device according to the electric information
Switch and whether meet the standby throwing charge condition of segmentation with two side bus of the block switch；
The tactful judge module, judges to receive the negative of another automatic bus transmission for receiving judge module in the signal
When lotus divides equally action signal, and charge condition judge module judgement satisfaction segmentation for charge condition is thrown, default bearing is judged
Lotus respectively first closes whether the definite value divided afterwards is preset value.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112072776A (en) * | 2020-08-05 | 2020-12-11 | 广东电网有限责任公司 | Spare power automatic switching system adaptive to 10kV bus wiring mode change |
| CN112072773A (en) * | 2020-08-05 | 2020-12-11 | 广东电网有限责任公司 | Main transformer spare power automatic switching implementation method adaptive to 10kV bus operation mode change |
| CN113162030A (en) * | 2021-03-31 | 2021-07-23 | 深圳供电局有限公司 | Substation-based spare power automatic switching load sharing method and device and computer equipment |
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| CN102769338A (en) * | 2012-07-20 | 2012-11-07 | 冀北电力有限公司张家口供电公司 | Closed-loop operational control method for power distribution network |
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| CN112072776A (en) * | 2020-08-05 | 2020-12-11 | 广东电网有限责任公司 | Spare power automatic switching system adaptive to 10kV bus wiring mode change |
| CN112072773A (en) * | 2020-08-05 | 2020-12-11 | 广东电网有限责任公司 | Main transformer spare power automatic switching implementation method adaptive to 10kV bus operation mode change |
| CN112072773B (en) * | 2020-08-05 | 2022-01-11 | 广东电网有限责任公司 | Main transformer spare power automatic switching implementation method adaptive to 10kV bus operation mode change |
| CN113162030A (en) * | 2021-03-31 | 2021-07-23 | 深圳供电局有限公司 | Substation-based spare power automatic switching load sharing method and device and computer equipment |
| CN113162030B (en) * | 2021-03-31 | 2023-07-07 | 深圳供电局有限公司 | Spare power automatic switching load sharing method, device and computer equipment based on transformer substation |
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