CN105429141A - Control method and system for substation bus from independent operation to parallel operation - Google Patents
Control method and system for substation bus from independent operation to parallel operation Download PDFInfo
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- CN105429141A CN105429141A CN201510946795.XA CN201510946795A CN105429141A CN 105429141 A CN105429141 A CN 105429141A CN 201510946795 A CN201510946795 A CN 201510946795A CN 105429141 A CN105429141 A CN 105429141A
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- main transformer
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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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
Abstract
The invention discloses a control method and system for a substation bus from an independent operation to a parallel operation. When a substation meets an execution condition of a switching instruction, a transformer low switch which is connected with a main transformer which needs to be transferred into maintenance is controlled to turn off and power supply is not carried out; a bus-bar switch between the main transformer which needs to transferred into maintenance and an adjacent main transformer which does not need to be transferred into maintenance is controlled to turn on; and a bus corresponding to the maintained main transformer is powered by the adjacent main transformer which does not need to be transferred into maintenance. Switching from the independent operation to the parallel operation is carried out according to the switching instruction and switch states; manual operation from the independent operation to the parallel operation and manual intervention into judgment are not needed; the parallel operation of the bus is achieved; the operation safety is ensured; the operation time is shortened; the power interruption time is reduced to the minimum as much as possible; the requirements on the safety and the reliability are met; the transformer low switch is firstly turned off and then the bus-bar switch is turned on; in a substation of which a short-circuit current exceeds the standard, the condition of fault explosion of the switch can be effectively avoided; and the power supply safety is ensured.
Description
Technical field
The present invention relates to field of power system control, particularly a kind of substation bus bar is turned control method and the system of paired running by apportion.
Background technology
Present Domestic Substation Operating generally adopts manually-operated method, operating personnel carry out calling out the names of those voted for while counting ballot-slips and answer song according to the content of operation order, manual operation item by item, it is long to there is the operating time in the method, the correctness of operation depends on the human factors such as the experience of operating personnel, sense of responsibility and the state of mind, there is the problem of erroneous judgement, misoperation.
As shown in Figure 1, in double-bus transformer station, comprise the first main transformer, the second main transformer, the first step-down switch, the second step-down switch, bus connection switch, the first bus, the second bus, the first mains switch and second source switch, first main transformer is connected with the first bus by the first step-down switch, second main transformer is connected with the second bus by the second step-down switch, first bus is connected with the second bus by bus connection switch, first bus is connected with load by the first mains switch, and the second bus is connected with load by second source switch.In addition, transformer station also comprises double-bus segmentation transformer station, triple busbar substation and triple bus-bar segmentation transformer station etc.
In the transformer station of each connected mode, each main transformer has the bus of its correspondence, main transformer is load supplying by bus, disconnect by the disconnection of bus connection switch with closed realization and be connected between adjacent main transformer, such as, in the double-bus transformer station shown in Fig. 1, the bus that first main transformer is corresponding is the first bus, the bus that second main transformer is corresponding is the second bus, bus connection switch is connected between the first main transformer and the second main transformer, when needing the maintenance carrying out main transformer in transformer station, the low-pressure side bus load of the main transformer of maintenance is needed to be powered by another main transformer side by side, i.e. power supply side by side, such as, when the first main transformer maintenance, need to convert the first corresponding for the first main transformer bus to second main transformer to power, when the second main transformer maintenance, need to convert the second corresponding for the second main transformer bus to first main transformer to power.Routine is the bus connection switch that first closes, then disconnects step-down switch, namely first again main transformer is turned maintenance side by side.But when the short circuit current arranged side by side in system exceedes the drop-out current of switch, may occur cannot the situation of cutting-off of short-circuit electric current, equipment explosion occurs and jeopardizes personal safety, therefore need first to disconnect step-down switch, namely first main transformer is turned maintenance, bus corresponding for maintenance main transformer is had a power failure, then the bus connection switch that closes, recover the power supply of power failure bus, but employing manual operation, need more than 15 minutes, consuming time longer, reduce power supply reliability index.
Summary of the invention
Based on this, be necessary to turn for apportion the problem that parallel operation length consuming time causes power supply reliability low, provide and can shorten the operating time thus the substation bus bar improving power supply reliability is turned control method and the system of paired running by apportion.
Substation bus bar turns a control method for paired running by apportion, comprises the following steps:
Obtain apportion and turn switching command arranged side by side, the main transformer needing turn main transformer of maintenance and non-required to turn maintenance is obtained in the main transformer of described transformer station according to described switching command, and obtain the on off state of transformer station, wherein, described on off state comprises bus connection switch state and step-down on off state, and the main transformer that the main transformer that described needs turn maintenance turns maintenance by the non-required that bus connection switch connects is that adjacent non-required turns maintenance main transformer;
When described transformer station meets the executive condition of described switching command, the step-down switch controlling to be connected with the main transformer that described needs turn maintenance disconnects, wherein, the executive condition of the described switching command described bus connection switch state comprised between main transformer that main transformer that described needs turn maintenance and described adjacent non-required turn maintenance is in separating brake, the step-down on off state that is connected with the main transformer that described needs turn maintenance is in the step-down on off state closed a floodgate and be connected with the main transformer that described adjacent non-required turns maintenance and is in combined floodgate;
When the step-down switch be connected with the main transformer that described needs turn maintenance disconnects successfully, control the described bus connection switch that described needs turn between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance and close a floodgate.
The present invention also provides a kind of substation bus bar to turn the control system of paired running by apportion, comprising:
Acquisition module, for obtaining the switching command that apportion turns arranged side by side, the main transformer needing turn main transformer of maintenance and non-required to turn maintenance is obtained in the main transformer of described transformer station according to described switching command, and obtain the on off state of transformer station, wherein, described on off state comprises bus connection switch state and step-down on off state, and the main transformer that the main transformer that described needs turn maintenance turns maintenance by the non-required that bus connection switch connects is that adjacent non-required turns maintenance main transformer;
First control module, for when described transformer station meets the executive condition of described switching command, the step-down switch controlling to be connected with the main transformer that described needs turn maintenance disconnects, wherein, the executive condition of the described switching command described bus connection switch state comprised between main transformer that main transformer that described needs turn maintenance and described adjacent non-required turn maintenance is in separating brake, the step-down on off state that is connected with the main transformer that described needs turn maintenance is in the step-down on off state closed a floodgate and be connected with the main transformer that described adjacent non-required turns maintenance and is in combined floodgate;
Second control module, during for disconnecting successfully when the step-down switch be connected with the main transformer that described needs turn maintenance, controlling the described bus connection switch that described needs turn between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance and closing a floodgate.
Above-mentioned substation bus bar turns control method and the system of paired running by apportion, by obtaining the state of each switch, only need carry out according to switching command and according to each on off state the switching that apportion turns paired running, without the need to carrying out the operation that apportion turns arranged side by side manually, get involved judgement without the need to operating personnel, realize bus paired running, while guaranteeing handling safety, shorten the operating time, client's interruption duration is dropped to minimum as far as possible, meet the index request to safety and reliability.And adopt and first disconnect and need to turn the step-down switch that the main transformer that overhauls is connected and remerge bus connection switch, in the transformer station that short circuit current exceeds standard, switch effectively can be avoided to break down the situation of exploding, ensure that power supply safety.In order to avoid the second main transformer overload, cause unsafe problems, after the bus that the main transformer needing to turn maintenance is corresponding is powered by the second main transformer, by be connected with the second main transformer and the bus connection switch be connected with the main transformer that non-required turns maintenance close, realize being connected with the second main transformer and the bus that the main transformer turning maintenance with non-required is connected turns the main transformer overhauled by non-required powers, alleviate the load of the second main transformer, realize load balancing, avoid the safety problem that the second main transformer overload causes, improve substation safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of double-bus transformer station;
Fig. 2 is the substation bus bar of an execution mode is turned the control method of paired running flow chart by apportion;
Fig. 3 is the substation bus bar of another execution mode is turned the control method of paired running flow chart by apportion;
Fig. 4 is the substation bus bar of another execution mode is turned the control method of paired running flow chart by apportion;
Fig. 5 is the structural representation of double-bus segmentation transformer station;
Fig. 6 is the structural representation of triple busbar substation;
Fig. 7 is the structural representation of triple bus-bar segmentation transformer station;
Fig. 8 is the substation bus bar of an execution mode is turned the control system of paired running module map by apportion;
Fig. 9 is the substation bus bar of another execution mode is turned the control system of paired running module map by apportion;
Figure 10 is the substation bus bar of another execution mode is turned the control system of paired running module map by apportion.
Embodiment
Refer to Fig. 2, provide a kind of substation bus bar of execution mode to turn the control method of paired running by apportion, comprise the following steps:
S100: obtain apportion and turn switching command arranged side by side, obtains in the main transformer of transformer station the main transformer needing turn main transformer of maintenance and non-required to turn maintenance, and obtains the on off state of transformer station according to switching command.
Wherein, on off state comprises bus connection switch state and step-down on off state, and the main transformer needing the main transformer turning maintenance to turn maintenance by the non-required that bus connection switch connects is that adjacent non-required turns maintenance main transformer.When the main transformer in transformer station needs to overhaul, then the main transformer overhauled can not to the bussed supply of its correspondence, thus needs to turn the main transformer turning maintenance by adjacent non-required and power.Operating personnel are at the background computer interface operation of man-machine interaction, the switching command that apportion turns arranged side by side can be produced, such as, for in the transformer station that the double-bus shown in Fig. 1 connects, first main transformer needs to overhaul, and the first bus turns when being powered by the second main transformer, carries out interface operation, produce switching command, according in known first main transformer of this switching command and the 3rd main transformer, this needs the main transformer of maintenance and the main transformer of this non-required maintenance.In addition, the on off state obtaining transformer station is also needed.
S200: when transformer station meets the executive condition of switching command, controls to disconnect with needing turn step-down switch that the main transformer overhauled is connected.
Wherein, the executive condition of the switching command bus connection switch state comprised between main transformer that main transformer and adjacent non-required that needs turn maintenance turn maintenance is in separating brake, the step-down on off state that is connected with the main transformer that needs turn overhaul is in the step-down on off state closed a floodgate and be connected with the main transformer that adjacent non-required turns maintenance and is in combined floodgate.When above-mentioned state all meets, represent the executive condition tentatively meeting switching command, can subsequent treatment be carried out, namely controlling to disconnect with needing turn step-down switch that the main transformer overhauled is connected, stopping the main transformer needing to turn maintenance to power.
S300: when with need to turn a step-down switch that the main transformer that overhaul is connected disconnects successfully time, the bus connection switch between the main transformer that the control needs turn main transformer overhauled and adjacent non-required turn maintenance closes a floodgate.
When controlling step-down switch and disconnecting, due to the impact of external condition, may cause disconnecting unsuccessfully, only have when step-down switch disconnects successfully, just carry out subsequent treatment, namely when the step-down switch be connected with the main transformer that needs turn overhaul disconnects successfully, stop power supply owing to needing the main transformer of maintenance, the bus of its correspondence is also stopped power supply, the main transformer needing adjacent non-required to turn maintenance is this bussed supply, thus need the bus connection switch main transformer and adjacent non-required that need to turn maintenance turned between the main transformer of maintenance to close, adjacent non-required so just can be made to turn its power supply of main transformer of maintenance, namely the main transformer bus connection switch controlling again to need turn main transformer of maintenance and adjacent non-required to turn maintenance closes a floodgate, namely first turn off and remerge.
Above-mentioned substation bus bar turns the control method of paired running by apportion, when transformer station meets the executive condition of switching command, control to disconnect with needing turn step-down switch that the main transformer overhauled is connected, successfully represent that main transformer needs being turned maintenance transfers inspecting state to when disconnecting, do not power, the bus connection switch controlled again between main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance closes a floodgate, utilizing adjacent non-required to turn the main transformer of maintenance to overhauling bussed supply corresponding to main transformer, needing a bus for the main transformer turning maintenance to turn and being powered successfully by the second main transformer.By obtaining the state of each switch, only need carry out according to switching command and according to each on off state the switching that apportion turns paired running, without the need to carrying out the operation that apportion turns arranged side by side manually, judgement is got involved without the need to operating personnel, realize bus paired running, shorten the operating time while guaranteeing handling safety, client's interruption duration is dropped to minimum as far as possible, meet the index request to safety and reliability.And adopt and first disconnect and need to turn the step-down switch that the main transformer that overhauls is connected and remerge bus connection switch, in the transformer station that short circuit current exceeds standard, switch effectively can be avoided to break down the situation of exploding, ensure that power supply safety.
Wherein in an embodiment, the executive condition of switching command also comprises voltage that needs turn bus corresponding to the main transformer of maintenance and is greater than the voltage that preset first threshold value and adjacent non-required turn bus corresponding to the main transformer of maintenance and is greater than default Second Threshold.
Because on off state exists pseudo-state, namely switch is actual is in separating brake, but when obtaining on off state, the state information obtained is for closing a floodgate, in order to reduce error, further confirmation bus connection switch is in "on" position, then increase voltage swing to judge, namely increase judge to need the voltage turning bus corresponding to main transformer overhauled whether to be greater than whether voltage that preset first threshold value and adjacent non-required turn bus corresponding to the main transformer of maintenance is greater than default Second Threshold, during due to fanout operation, the bus connection switch needing to turn between main transformer that the main transformer of maintenance and adjacent non-required turn maintenance disconnects, be corresponding bussed supply separately, only have when the voltage on bus is greater than preset first threshold value, represent that bus really has voltage, represent that connected step-down switch is actually to close, otherwise be pseudo-combined floodgate.
In actual applications, by the primary winding of voltage transformer is connected with bus, export the secondary side voltage after busbar voltage no-load voltage ratio by the secondary coil of voltage transformer, by voltage acquisition module, this voltage is gathered, thus the voltage of bus can be obtained.Such as, as shown in Figure 2, be connected to the voltage transformer pt 1 on the first bus, its secondary coil exports the secondary voltage after the first busbar voltage no-load voltage ratio, is gathered this voltage by voltage acquisition module, can obtain the voltage of the first bus, be connected to the voltage transformer pt 2 on the second bus, its secondary coil exports the secondary voltage after the second busbar voltage no-load voltage ratio, is gathered this voltage by voltage acquisition module, can obtain the voltage of the second bus.By the primary winding of current transformer is connected with the low-pressure side of switch, the primary winding of the electric current inflow current instrument transformer of the low-pressure side of switch, secondary side switches electric current after the secondary coil generation switching current no-load voltage ratio of current transformer, by current acquisition module, this voltage is gathered, thus can switching current be obtained.Such as, Current Transmit 1 is connected to the low-pressure side of the first step-down switch, its secondary coil produces the secondary side current after the first step-down switching current no-load voltage ratio, thus the first step-down switching current can be obtained, Current Transmit 2 is connected to the low-pressure side of the second step-down switch, its secondary coil produces the secondary side current after the second step-down switching current no-load voltage ratio, thus can obtain the second step-down switching current.Current Transmit 11 to CT1n is connected to the low-pressure side of the first corresponding mains switch, the electric current of each first mains switch can be obtained, Current Transmit 21 to CT2n is connected to the low-pressure side of corresponding second source switch, can obtain the electric current of each second source switch.
Wherein in an embodiment, when with need to turn a step-down switch that the main transformer that overhaul is connected disconnects successfully time, also comprise before the step S300 that the bus connection switch between the main transformer that the control needs turn main transformer overhauled and adjacent non-required turn maintenance closes a floodgate:
Judge whether be in separating brake with needing turn step-down on off state that the main transformer overhauled is connected, and whether be less than default first current threshold with needing a turn electric current for the step-down switch that the main transformer overhauled is connected;
When being in separating brake with needing turn step-down on off state that the main transformer overhauled is connected, and with when needing a turn electric current for the step-down switch that the main transformer overhauled is connected to be less than default first current threshold, disconnect successfully with needing turn step-down switch that the main transformer overhauled is connected, otherwise, disconnect unsuccessfully with needing turn step-down switch that the main transformer overhauled is connected, prompting disconnects failure information.
When transformer station meets the executive condition of switching command, control with when needing turn step-down switch that the main transformer overhauled is connected to disconnect, in order to avoid extraneous factor pair with need to turn a step-down switch that the main transformer that overhaul is connected and disconnect the process step-down switch causing the main transformer overhauled with needs turn to be connected that has an impact and really do not disconnect, need to confirm whether disconnect successfully with needing turn step-down switch that the main transformer overhauled is connected further, namely by judging whether whether be in separating brake with needing turn step-down on off state that the main transformer overhauled is connected, and be less than default first current threshold with needing a turn electric current for the step-down switch that the main transformer overhauled is connected, only have when this both meets, represent and disconnect successfully with needing turn step-down switch that the main transformer overhauled is connected, carry out next step process, otherwise, disconnect unsuccessfully, prompting disconnects failure information, stop this to switch.
Refer to Fig. 3, wherein in an embodiment, when with need to turn a step-down switch that the main transformer that overhaul is connected disconnects successfully time, the step S300 that the bus connection switch between the main transformer that the control needs turn main transformer overhauled and adjacent non-required turn maintenance closes a floodgate specifically comprises:
S310: when with when needing turn step-down switch that the main transformer overhauled is connected to disconnect successfully, control and need turn mains switch that the bus that the main transformer overhauled is corresponding connects to disconnect.
S320: the bus connection switch controlled between main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance closes a floodgate, and closes a floodgate with needing turn mains switch that the bus that the main transformer overhauled is corresponding connects.
Stop power supply owing to needing the main transformer of maintenance, the bus of its correspondence is also stopped power supply, the main transformer needing adjacent non-required to turn maintenance is this bussed supply, thus need the bus connection switch main transformer and adjacent non-required that need to turn maintenance turned between the main transformer of maintenance to close, adjacent non-required so just can be made to turn the main transformer of maintenance for its power supply, but, carrying out first disconnecting with needing turn mains switch that the bus that the main transformer overhauled is corresponding connects before bus connection switch closes, carry out bus connection switch combined floodgate again, improve the fail safe of transformer station's electric power system, after bus connection switch closes a floodgate, closing a floodgate with needing turn mains switch that the bus that the main transformer overhauled is corresponding connects, namely the main transformer of adjacent non-required maintenance is by needing turn bus that the main transformer of maintenance is corresponding to be load supplying.
Refer to Fig. 4, wherein in an embodiment, the bus connection switch controlled between main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance closes a floodgate, and comprises with needing turn step S320 that the mains switch that the bus that the main transformer overhauled is corresponding connects closes a floodgate:
S321: when with when needing the electric current turning the mains switch that bus corresponding to the main transformer that overhaul connects to be less than default second current threshold and the voltage that needs turn bus corresponding to the main transformer that overhaul is less than preset first threshold value, the bus connection switch between the main transformer that the control needs turn main transformer overhauled and adjacent non-required turn maintenance closes a floodgate.
S322: the bus connection switch state between the main transformer that the main transformer and adjacent non-required that need to turn maintenance turn maintenance be in closes a floodgate, needs to turn main transformer that the main transformer that overhaul and adjacent non-required turn maintenance between the electric current of the bus connection switch voltage that is greater than bus corresponding to main transformer that default 3rd current threshold and needs turn overhaul when being greater than preset first threshold value, the mains switch that the bus corresponding with the main transformer that needs turn overhaul connects is closed a floodgate.
When with need to turn after a mains switch that bus corresponding to the main transformer that overhauls connect disconnects, the bus connection switch controlled again between main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance closes a floodgate, but, may really not disconnect with needing turn mains switch that the bus that the main transformer overhauled is corresponding connects, thus need whether to disconnect it successfully to judge, namely judge and need the electric current turning the mains switch that bus corresponding to the main transformer that overhauls connects whether to be less than the first source current threshold value and whether the voltage of bus corresponding to the main transformer that overhauls of needs turn is less than preset first threshold value, when both all meet, representing disconnects successfully, namely had a power failure with needing turn bus that the main transformer overhauled is corresponding, no longer to this bussed supply, carry out control bus connection switch again to close a floodgate.
Only have when with need to turn bus connection switch that the main transformer that overhauls is connected and close a floodgate and successfully, to carry out next step process again, in order to confirm that whether successfully the bus connection switch between the main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance closes a floodgate further, whether the bus connection switch state needing to judge to need to turn between main transformer that the main transformer that overhauls and adjacent non-required turn maintenance is in combined floodgate, whether the voltage whether electric current needing to turn the bus connection switch between main transformer that the main transformer of maintenance and adjacent non-required turn maintenance is greater than bus corresponding to main transformer that default second current threshold and needs turn overhaul is greater than preset first threshold value, when all meeting, representing closes a floodgate successfully, the main transformer being turned maintenance by adjacent non-required is that the bus had a power failure restores electricity, supply power mode handover success, realize paired running, can be for further processing, the mains switch that the bus corresponding with the main transformer that needs turn overhaul being about to disconnect connects closes a floodgate, for load is powered.
Above-mentioned preset first threshold value, default Second Threshold, default first current threshold, default second current threshold and default 3rd current threshold preset according to transformer station's actual conditions.
Refer to Fig. 1, with a specific embodiment, the control method that above-mentioned substation bus bar turns paired running by apportion is illustrated below, specifically to the first main transformer maintenance in double-bus transformer station, first bus turns the control procedure of being powered by the second main transformer and is described, namely the first main transformer is the main transformer needing to turn maintenance, second main transformer is the main transformer that non-required turns maintenance, is specially the main transformer that the non-required adjacent with the first main transformer turns maintenance.
First, at the background computer interface operation of man-machine interaction, produce apportion and turn switching command arranged side by side, namely produce the first main transformer and turn maintenance, first bus turns the switching command of being powered by the second main transformer, be issued to logic control device from this switching command of output of host computer, obtain apportion and turn switching command arranged side by side, obtain the main transformer needing to turn maintenance, i.e. the first main transformer, obtain the main transformer that non-required turns maintenance, i.e. the second main transformer, and obtain bus connection switch state in transformer station, the first step-down on off state and the second step-down on off state.
Judge whether transformer station meets the executive condition of switching command, when meeting the executive condition of switching command, produce the open command that control first step-down switch disconnects, according to open command, control the first step-down switch to disconnect, particularly, the voltage that the executive condition bus connection switch state comprised between the first main transformer and the second main transformer is in separating brake, the first step-down state is in combined floodgate, the second step-down on off state is in combined floodgate, the voltage of the first bus is greater than preset first threshold value and the second bus of switching command is now greater than default Second Threshold.
Judge whether the first step-down on off state is in separating brake again, and whether the electric current of the first step-down switch is less than default first current threshold, if so, then the first step-down switch disconnects successfully, and if not, then the first step-down switch disconnects unsuccessfully, and prompting disconnects failure information.
When the first step-down switch disconnects successfully, control the first mains switch disconnection that the first bus connects, when the electric current of the first mains switch is less than the first source current threshold value and the voltage that needs turn bus corresponding to the main transformer of maintenance is less than preset first threshold value, control the first bus connection switch again to close a floodgate, when the first bus connection switch state be in combined floodgate, the electric current of the first bus connection switch is greater than default second current threshold and the first voltage is greater than preset first threshold value time, the first mains switch be connected with the first bus is closed a floodgate.Now, the first main transformer turns maintenance, and the first bus turns to be powered by the second main transformer and converts.
The first corresponding for the first main transformer needing to turn maintenance bus can be realized to turn powered by the second main transformer by above-mentioned steps, realize substation bus bar apportion and turn paired running.More than that when needing to overhaul to the first main transformer, the first bus turns the description of the control procedure that the second main transformer is powered, if desired the second main transformer is overhauled, the second bus that second main transformer is corresponding turns the first bus when the control procedure of being powered by the first main transformer and above-mentioned first main transformer overhaul, and to turn the control procedure of the second main transformer similar, by needing the first main transformer turning maintenance to change the second main transformer into, do not repeat them here.In addition, apportion for the triple busbar substation shown in double-bus segmentation transformer station as shown in Figure 5, Fig. 6 and the triple bus-bar segmentation transformer station shown in Fig. 7 turns control procedure arranged side by side, to turn control procedure arranged side by side similar with the above-mentioned apportion for the double-bus transformer station shown in Fig. 2, first confirm the good main transformer needing to turn maintenance, the handoff procedure of follow-up operation mode is similar.Such as, as shown in Figure 6, if the main transformer that the needs confirmed turn maintenance is the first main transformer in figure, second main transformer is the main transformer of the adjacent non-required maintenance of the first main transformer, when the voltage that bus connection switch state between the first main transformer and the second main transformer is in separating brake, the first step-down state is in combined floodgate, the second step-down on off state is in combined floodgate, the voltage of the first bus is greater than preset first threshold value and the second bus is greater than default Second Threshold, control the first step-down switch to disconnect, then the bus connection switch controlled between the first main transformer and the second main transformer closes a floodgate.If the 3rd main transformer needs maintenance in the transformer station shown in confirmation Fig. 6, now, second main transformer is the main transformer of the adjacent non-required maintenance of the 3rd main transformer, when the voltage that bus connection switch state between the second main transformer and the 3rd main transformer is in separating brake, the second step-down state is in combined floodgate, the 3rd step-down on off state is in combined floodgate, the voltage of the second bus is greater than preset first threshold value and triple bus-bar is greater than default Second Threshold, control the 3rd step-down switch to disconnect, then the bus connection switch controlled between the second main transformer and the 3rd main transformer closes a floodgate.
Refer to Fig. 8, the present invention also provides a kind of substation bus bar of execution mode to turn the control system of paired running by apportion, comprising:
Acquisition module 100, for obtaining the switching command that apportion turns arranged side by side, obtaining in the main transformer of transformer station the main transformer needing turn main transformer of maintenance and non-required to turn maintenance, and obtaining the on off state of transformer station according to switching command.
Wherein, on off state comprises bus connection switch state and step-down on off state, and the main transformer needing the main transformer turning maintenance to turn maintenance by the non-required that bus connection switch connects is that adjacent non-required turns maintenance main transformer.When the main transformer in transformer station needs to overhaul, then the main transformer overhauled can not to the bussed supply of its correspondence, thus needs to turn the main transformer turning maintenance by adjacent non-required and power.Operating personnel are at the background computer interface operation of man-machine interaction, the switching command that apportion turns arranged side by side can be produced, such as, for in the transformer station that the double-bus shown in Fig. 1 connects, first main transformer needs to overhaul, and the first bus turns when being powered by the second main transformer, carries out interface operation, produce switching command, according in known first main transformer of this switching command and the 3rd main transformer, this needs the main transformer of maintenance and the main transformer of this non-required maintenance.In addition, the on off state obtaining transformer station is also needed.
First control module 200, during for meeting the executive condition of switching command when transformer station, control to disconnect with needing turn step-down switch that the main transformer overhauled is connected, wherein, the executive condition of the switching command bus connection switch state comprised between main transformer that main transformer and adjacent non-required that needs turn maintenance turn maintenance is in separating brake, the step-down on off state that is connected with the main transformer that needs turn overhaul is in the step-down on off state closed a floodgate and be connected with the main transformer that adjacent non-required turns maintenance and is in combined floodgate.
Wherein, the executive condition of the switching command bus connection switch state comprised between main transformer that main transformer and adjacent non-required that needs turn maintenance turn maintenance is in separating brake, the step-down on off state that is connected with the main transformer that needs turn overhaul is in the step-down on off state closed a floodgate and be connected with the main transformer that adjacent non-required turns maintenance and is in combined floodgate.When above-mentioned state all meets, represent the executive condition tentatively meeting switching command, can subsequent treatment be carried out, namely controlling to disconnect with needing turn step-down switch that the main transformer overhauled is connected, stopping the main transformer needing to turn maintenance to power.
Second control module 300, for when with need to turn a step-down switch that the main transformer that overhaul is connected disconnects successfully time, the bus connection switch between the main transformer that the control needs turn main transformer overhauled and adjacent non-required turn maintenance closes a floodgate.
When controlling step-down switch and disconnecting, due to the impact of external condition, may cause disconnecting unsuccessfully, only have when step-down switch disconnects successfully, just carry out subsequent treatment, namely when the step-down switch be connected with the main transformer that needs turn overhaul disconnects successfully, stop power supply owing to needing the main transformer of maintenance, the bus of its correspondence is also stopped power supply, the main transformer needing adjacent non-required to turn maintenance is this bussed supply, thus need the bus connection switch main transformer and adjacent non-required that need to turn maintenance turned between the main transformer of maintenance to close, adjacent non-required so just can be made to turn its power supply of main transformer of maintenance, namely the main transformer bus connection switch controlling again to need turn main transformer of maintenance and adjacent non-required to turn maintenance closes a floodgate, namely first turn off and remerge.
Above-mentioned substation bus bar turns the control system of paired running by apportion, when transformer station meets the executive condition of switching command, control to disconnect with needing turn step-down switch that the main transformer overhauled is connected, successfully represent that main transformer needs being turned maintenance transfers inspecting state to when disconnecting, do not power, the bus connection switch controlled again between main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance closes a floodgate, utilizing adjacent non-required to turn the main transformer of maintenance to overhauling bussed supply corresponding to main transformer, needing a bus for the main transformer turning maintenance to turn and being powered successfully by the second main transformer.By obtaining the state of each switch, only need carry out according to switching command and according to each on off state the switching that apportion turns paired running, without the need to carrying out the operation that apportion turns arranged side by side manually, judgement is got involved without the need to operating personnel, realize bus paired running, shorten the operating time while guaranteeing handling safety, client's interruption duration is dropped to minimum as far as possible, meet the index request to safety and reliability.And adopt and first disconnect and need to turn the step-down switch that the main transformer that overhauls is connected and remerge bus connection switch, in the transformer station that short circuit current exceeds standard, switch effectively can be avoided to break down the situation of exploding, ensure that power supply safety.
In one of them embodiment, the executive condition of switching command also comprises voltage that needs turn bus corresponding to the main transformer of maintenance and is greater than the voltage that preset first threshold value and adjacent non-required turn bus corresponding to the main transformer of maintenance and is greater than default Second Threshold.
Because on off state exists pseudo-state, namely switch is actual is in separating brake, but when obtaining on off state, the state information obtained is for closing a floodgate, in order to reduce error, further confirmation bus connection switch is in "on" position, then increase voltage swing to judge, namely increase judge to need the voltage turning bus corresponding to main transformer overhauled whether to be greater than whether voltage that preset first threshold value and adjacent non-required turn bus corresponding to the main transformer of maintenance is greater than default Second Threshold, during due to fanout operation, the bus connection switch needing to turn between main transformer that the main transformer of maintenance and adjacent non-required turn maintenance disconnects, be corresponding bussed supply separately, only have when the voltage on bus is greater than preset first threshold value, represent that bus really has voltage, represent that connected step-down switch is actually to close, otherwise be pseudo-combined floodgate.
In actual applications, by the primary winding of voltage transformer is connected with bus, export the secondary side voltage after busbar voltage no-load voltage ratio by the secondary coil of voltage transformer, by voltage acquisition module, this voltage is gathered, thus the voltage of bus can be obtained.Such as, as shown in Figure 2, be connected to the voltage transformer pt 1 on the first bus, its secondary coil exports the secondary voltage after the first busbar voltage no-load voltage ratio, is gathered this voltage by voltage acquisition module, can obtain the voltage of the first bus, be connected to the voltage transformer pt 2 on the second bus, its secondary coil exports the secondary voltage after the second busbar voltage no-load voltage ratio, is gathered this voltage by voltage acquisition module, can obtain the voltage of the second bus.By the primary winding of current transformer is connected with the low-pressure side of switch, the primary winding of the electric current inflow current instrument transformer of the low-pressure side of switch, secondary side switches electric current after the secondary coil generation switching current no-load voltage ratio of current transformer, by current acquisition module, this voltage is gathered, thus can switching current be obtained.Such as, Current Transmit 1 is connected to the low-pressure side of the first step-down switch, its secondary coil produces the secondary side current after the first step-down switching current no-load voltage ratio, thus the first step-down switching current can be obtained, Current Transmit 2 is connected to the low-pressure side of the second step-down switch, its secondary coil produces the secondary side current after the second step-down switching current no-load voltage ratio, thus can obtain the second step-down switching current.Current Transmit 11 to CT1n is connected to the low-pressure side of the first corresponding mains switch, the electric current of each first mains switch can be obtained, Current Transmit 21 to CT2n is connected to the low-pressure side of corresponding second source switch, can obtain the electric current of each second source switch.
In one of them embodiment, the control system that above-mentioned substation bus bar turns paired running by apportion also comprises:
Judge module, for judging whether be in separating brake with needing turn step-down on off state that the main transformer overhauled is connected, and whether be less than default first current threshold with needing a turn electric current for the step-down switch that the main transformer overhauled is connected, when being in separating brake with needing turn step-down on off state that the main transformer overhauled is connected, and with when needing a turn electric current for the step-down switch that the main transformer overhauled is connected to be less than default first current threshold, disconnect successfully with needing turn step-down switch that the main transformer overhauled is connected, otherwise, disconnect unsuccessfully with needing turn step-down switch that the main transformer overhauled is connected, prompting disconnects failure information.
When transformer station meets the executive condition of switching command, control with when needing turn step-down switch that the main transformer overhauled is connected to disconnect, in order to avoid extraneous factor pair with need to turn a step-down switch that the main transformer that overhaul is connected and disconnect the process step-down switch causing the main transformer overhauled with needs turn to be connected that has an impact and really do not disconnect, need to confirm whether disconnect successfully with needing turn step-down switch that the main transformer overhauled is connected further, namely by judging whether whether be in separating brake with needing turn step-down on off state that the main transformer overhauled is connected, and be less than default first current threshold with needing a turn electric current for the step-down switch that the main transformer overhauled is connected, only have when this both meets, represent and disconnect successfully with needing turn step-down switch that the main transformer overhauled is connected, carry out next step process, otherwise, disconnect unsuccessfully, prompting disconnects failure information, stop this to switch.
Refer to Fig. 9, in one of them embodiment, the second control module 300 comprises:
First control unit 310, for when with when needing turn step-down switch that the main transformer overhauled is connected to disconnect successfully, controls and needs turn mains switch that the bus that the main transformer overhauled is corresponding connects to disconnect;
Second control unit 320, closes a floodgate for the bus connection switch controlled between main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance, and closes a floodgate with needing turn mains switch that the bus that the main transformer overhauled is corresponding connects.
Stop power supply owing to needing the main transformer of maintenance, the bus of its correspondence is also stopped power supply, the main transformer needing adjacent non-required to turn maintenance is this bussed supply, thus need the bus connection switch main transformer and adjacent non-required that need to turn maintenance turned between the main transformer of maintenance to close, adjacent non-required so just can be made to turn the main transformer of maintenance for its power supply, but, carrying out first disconnecting with needing turn mains switch that the bus that the main transformer overhauled is corresponding connects before bus connection switch closes, carry out bus connection switch combined floodgate again, improve the fail safe of transformer station's electric power system, after bus connection switch closes a floodgate, closing a floodgate with needing turn mains switch that the bus that the main transformer overhauled is corresponding connects, namely the main transformer of adjacent non-required maintenance is by needing turn bus that the main transformer of maintenance is corresponding to be load supplying.
Refer to Figure 10, in one of them embodiment, the second control unit 320 comprises:
3rd control unit 321, for when with when needing the electric current turning the mains switch that bus corresponding to the main transformer that overhaul connects to be less than default second current threshold and the voltage that needs turn bus corresponding to the main transformer that overhaul is less than preset first threshold value, the bus connection switch between the main transformer that the control needs turn main transformer overhauled and adjacent non-required turn maintenance closes a floodgate;
4th control unit 322, for turn maintenance when the main transformer and adjacent non-required that need to turn maintenance main transformer between bus connection switch state be in closes a floodgate, needs to turn main transformer that the main transformer that overhaul and adjacent non-required turn maintenance between the electric current of the bus connection switch voltage that is greater than bus corresponding to main transformer that default 3rd current threshold and needs turn overhaul be greater than preset first threshold value time, the mains switch that the bus corresponding with the main transformer that needs turn overhaul connects is closed a floodgate.
When with need to turn after a mains switch that bus corresponding to the main transformer that overhauls connect disconnects, the bus connection switch controlled again between main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance closes a floodgate, but, may really not disconnect with needing turn mains switch that the bus that the main transformer overhauled is corresponding connects, thus need whether to disconnect it successfully to judge, namely judge and need the electric current turning the mains switch that bus corresponding to the main transformer that overhauls connects whether to be less than the first source current threshold value and whether the voltage of bus corresponding to the main transformer that overhauls of needs turn is less than preset first threshold value, when both all meet, representing disconnects successfully, namely had a power failure with needing turn bus that the main transformer overhauled is corresponding, no longer to this bussed supply, carry out control bus connection switch again to close a floodgate.
Only have when with need to turn bus connection switch that the main transformer that overhauls is connected and close a floodgate and successfully, to carry out next step process again, in order to confirm that whether successfully the bus connection switch between the main transformer that the main transformer that needs to turn maintenance and adjacent non-required turn maintenance closes a floodgate further, whether the bus connection switch state needing to judge to need to turn between main transformer that the main transformer that overhauls and adjacent non-required turn maintenance is in combined floodgate, whether the voltage whether electric current needing to turn the bus connection switch between main transformer that the main transformer of maintenance and adjacent non-required turn maintenance is greater than bus corresponding to main transformer that default second current threshold and needs turn overhaul is greater than preset first threshold value, when all meeting, representing closes a floodgate successfully, the main transformer being turned maintenance by adjacent non-required is that the bus had a power failure restores electricity, supply power mode handover success, realize paired running, can be for further processing, the mains switch that the bus corresponding with the main transformer that needs turn overhaul being about to disconnect connects closes a floodgate, for load is powered.
Above-mentioned preset first threshold value, default Second Threshold, default first current threshold, default second current threshold and default 3rd current threshold preset according to transformer station's actual conditions.
Each technical characteristic of above embodiment can combine arbitrarily, for making description succinct, all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
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 (10)
1. substation bus bar is turned a control method for paired running by apportion, it is characterized in that, comprises the following steps:
Obtain apportion and turn switching command arranged side by side, the main transformer needing turn main transformer of maintenance and non-required to turn maintenance is obtained in the main transformer of described transformer station according to described switching command, and obtain the on off state of transformer station, wherein, described on off state comprises bus connection switch state and step-down on off state, and the main transformer that the main transformer that described needs turn maintenance turns maintenance by the non-required that bus connection switch connects is that adjacent non-required turns maintenance main transformer;
When described transformer station meets the executive condition of described switching command, the step-down switch controlling to be connected with the main transformer that described needs turn maintenance disconnects, wherein, the executive condition of the described switching command described bus connection switch state comprised between main transformer that main transformer that described needs turn maintenance and described adjacent non-required turn maintenance is in separating brake, the step-down on off state that is connected with the main transformer that described needs turn maintenance is in the step-down on off state closed a floodgate and be connected with the main transformer that described adjacent non-required turns maintenance and is in combined floodgate;
When the step-down switch be connected with the main transformer that described needs turn maintenance disconnects successfully, control the described bus connection switch that described needs turn between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance and close a floodgate.
2. substation bus bar according to claim 1 is turned the control method of paired running by apportion, it is characterized in that, the executive condition of described switching command also comprises the voltage that voltage that described needs turn bus corresponding to the main transformer of maintenance is greater than bus corresponding to main transformer that preset first threshold value and described adjacent non-required turn maintenance and is greater than default Second Threshold.
3. substation bus bar according to claim 1 is turned the control method of paired running by apportion, it is characterized in that, when the described step-down switch when being connected with the main transformer that described needs turn maintenance disconnects successfully, control also to comprise before described needs turn the step that the described bus connection switch between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance closes a floodgate:
Judge whether the step-down on off state be connected with the main transformer that described needs turn maintenance is in separating brake, and whether the electric current of the step-down switch be connected with the main transformer that described needs turn maintenance is less than default first current threshold;
When the step-down on off state be connected with the main transformer that described needs turn maintenance is in separating brake, and the electric current of the step-down switch be connected with the main transformer that described needs turn maintenance is when being less than default first current threshold, the step-down switch that the main transformer turning maintenance with described needs is connected disconnects successfully, otherwise, the step-down switch that the main transformer turning maintenance with described needs is connected disconnects unsuccessfully, and prompting disconnects failure information.
4. substation bus bar according to claim 1 is turned the control method of paired running by apportion, it is characterized in that, when the described step-down switch when being connected with the main transformer that described needs turn maintenance disconnecting successfully, controlling described needs and turning the step that the described bus connection switch between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance closes a floodgate and specifically comprise:
When the step-down switch be connected with the main transformer that described needs turn maintenance disconnects successfully, to control and described needs turn the mains switch that bus corresponding to the main transformer of maintenance connect and disconnect;
Control the described bus connection switch that described needs turn between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance to close a floodgate, and close a floodgate turning with described needs the mains switch that bus corresponding to the main transformer of maintenance connect.
5. substation bus bar according to claim 4 is turned the control method of paired running by apportion, it is characterized in that, the described bus connection switch that the described needs of described control turn between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance closes a floodgate, and comprises turning with described needs the step that mains switch that bus corresponding to the main transformer of maintenance connect closes a floodgate:
When being less than default second current threshold with the electric current that described needs turn the mains switch that bus corresponding to the main transformer of maintenance connects and the voltage that described needs turn bus corresponding to the main transformer of maintenance is less than preset first threshold value, controlling the described bus connection switch that described needs turn between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance and closing a floodgate;
Described bus connection switch state between the main transformer that the main transformer that described needs turn maintenance and described adjacent non-required turn maintenance be in close a floodgate, the electric current of described bus connection switch between main transformer that main transformer and described adjacent non-required that described needs turn maintenance turn maintenance is greater than default 3rd current threshold and described needs turn bus corresponding to the main transformer of maintenance voltage is when being greater than described preset first threshold value, close a floodgate turning with described needs the described mains switch that bus corresponding to the main transformer of maintenance connect.
6. substation bus bar is turned a control system for paired running by apportion, it is characterized in that, comprising:
Acquisition module, for obtaining the switching command that apportion turns arranged side by side, the main transformer needing turn main transformer of maintenance and non-required to turn maintenance is obtained in the main transformer of described transformer station according to described switching command, and obtain the on off state of transformer station, wherein, described on off state comprises bus connection switch state and step-down on off state, and the main transformer that the main transformer that described needs turn maintenance turns maintenance by the non-required that bus connection switch connects is that adjacent non-required turns maintenance main transformer;
First control module, for when described transformer station meets the executive condition of described switching command, the step-down switch controlling to be connected with the main transformer that described needs turn maintenance disconnects, wherein, the executive condition of the described switching command described bus connection switch state comprised between main transformer that main transformer that described needs turn maintenance and described adjacent non-required turn maintenance is in separating brake, the step-down on off state that is connected with the main transformer that described needs turn maintenance is in the step-down on off state closed a floodgate and be connected with the main transformer that described adjacent non-required turns maintenance and is in combined floodgate;
Second control module, during for disconnecting successfully when the step-down switch be connected with the main transformer that described needs turn maintenance, controlling the described bus connection switch that described needs turn between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance and closing a floodgate.
7. substation bus bar according to claim 6 is turned the control system of paired running by apportion, it is characterized in that, the executive condition of described switching command also comprises the voltage that voltage that described needs turn bus corresponding to the main transformer of maintenance is greater than bus corresponding to main transformer that preset first threshold value and described adjacent non-required turn maintenance and is greater than default Second Threshold.
8. substation bus bar according to claim 6 is turned the control system of paired running by apportion, it is characterized in that, also comprises:
Judge module, for judging whether the step-down on off state that the main transformer turning maintenance with described needs is connected is in separating brake, and whether the electric current of the step-down switch be connected with the main transformer that described needs turn maintenance is less than default first current threshold, when the step-down on off state be connected with the main transformer that described needs turn maintenance is in separating brake, and the electric current of the step-down switch be connected with the main transformer that described needs turn maintenance is when being less than default first current threshold, the step-down switch that the main transformer turning maintenance with described needs is connected disconnects successfully, otherwise, the step-down switch that the main transformer turning maintenance with described needs is connected disconnects unsuccessfully, prompting disconnects failure information.
9. substation bus bar according to claim 6 is turned the control system of paired running by apportion, it is characterized in that, described second control module comprises:
First control unit, during for disconnecting successfully when the step-down switch be connected with the main transformer that described needs turn maintenance, to control and described needs turn the mains switch that bus corresponding to the main transformer of maintenance connect and disconnect;
Second control unit, the described bus connection switch turned between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance for controlling described needs closes a floodgate, and closes a floodgate turning with described needs the mains switch that bus corresponding to the main transformer of maintenance connect.
10. substation bus bar according to claim 9 is turned the control system of paired running by apportion, it is characterized in that, described second control unit comprises:
3rd control unit, for when being less than default second current threshold with the electric current that described needs turn the mains switch that bus corresponding to the main transformer of maintenance connects and the voltage that described needs turn bus corresponding to the main transformer of maintenance is less than preset first threshold value, controlling the described bus connection switch that described needs turn between main transformer that the main transformer of maintenance and described adjacent non-required turn maintenance and closing a floodgate;
4th control unit, described bus connection switch state between the main transformer turning maintenance for the main transformer that turns maintenance when described needs and described adjacent non-required be in close a floodgate, the electric current of described bus connection switch between main transformer that main transformer and described adjacent non-required that described needs turn maintenance turn maintenance is greater than default 3rd current threshold and described needs turn bus corresponding to the main transformer of maintenance voltage is when being greater than described preset first threshold value, close a floodgate turning with described needs the described mains switch that bus corresponding to the main transformer of maintenance connect.
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| CN201510946795.XA CN105429141B (en) | 2015-12-16 | 2015-12-16 | Substation bus bar is turned the control method and system of paired running by point row |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451521A (en) * | 2016-11-07 | 2017-02-22 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Alternating-current bus split operation tripping method |
| CN112260235A (en) * | 2020-10-27 | 2021-01-22 | 广东电网有限责任公司 | Method and device for controlling grounding mode of grounding transformer on bus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090212631A1 (en) * | 2008-02-22 | 2009-08-27 | Liebert Corporation | Substation based high voltage uninterruptible power supply |
| CN103762711A (en) * | 2013-12-20 | 2014-04-30 | 神华集团有限责任公司 | Coal mine system power source switching method and device |
| CN104485732A (en) * | 2014-12-17 | 2015-04-01 | 广州供电局有限公司 | In-put control method for standby powers of transformer substations |
-
2015
- 2015-12-16 CN CN201510946795.XA patent/CN105429141B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090212631A1 (en) * | 2008-02-22 | 2009-08-27 | Liebert Corporation | Substation based high voltage uninterruptible power supply |
| CN103762711A (en) * | 2013-12-20 | 2014-04-30 | 神华集团有限责任公司 | Coal mine system power source switching method and device |
| CN104485732A (en) * | 2014-12-17 | 2015-04-01 | 广州供电局有限公司 | In-put control method for standby powers of transformer substations |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451521A (en) * | 2016-11-07 | 2017-02-22 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Alternating-current bus split operation tripping method |
| CN106451521B (en) * | 2016-11-07 | 2019-03-15 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A kind of ac bus split operation trip method |
| CN112260235A (en) * | 2020-10-27 | 2021-01-22 | 广东电网有限责任公司 | Method and device for controlling grounding mode of grounding transformer on bus |
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| CN105429141B (en) | 2018-09-25 |
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