CN111915029B - Intelligent recording system and method for bus voltage loss - Google Patents
Intelligent recording system and method for bus voltage loss Download PDFInfo
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Abstract
The invention provides a bus voltage loss intelligent recording system which comprises an EMS system, a DMS system, a data acquisition module, a data storage module, a bus voltage loss judgment module and a screening recording module. The invention also provides a bus voltage loss intelligent recording method which is realized by the bus voltage loss intelligent recording system. The invention provides a bus voltage loss intelligent recording system and method, which solve the technical defect that the prior art cannot intelligently reflect the load condition of each feeder line on a voltage loss bus and improve the fault processing efficiency of workers.
Description
Technical Field
The invention relates to the technical field of automation of power systems, in particular to a system and a method for intelligently recording bus voltage loss.
Background
At present, for the condition of 10kV bus voltage loss, a distribution network dispatcher is completely relied to enter an ocs system to check 10kV feeder loads on the voltage loss bus one by one to generate related records, then the related records are notified one by one, the distribution network dispatcher needs to call and check a power supply plan of the related bus, and then an optimal scheme is researched and judged by combining with actual conditions. One section generating line often has more than ten 10kV feeders, and at present personnel compile and be limited and the user requires higher and higher to the power supply reliability, traditional operation mode is not only under efficient, appears the mistake easily moreover, influences the power supply reliability, threatens the electric wire netting safety and stability operation even.
In the prior art, whether a bus is under-voltage or not is judged, and the load condition of a feeder line on the bus is not further reflected, for example, a 10kV backup automatic switching device, publication no: CN109861218A can only preliminarily determine whether the bus is under-voltage, and cannot intelligently reflect the load of each feeder on the under-voltage bus.
Disclosure of Invention
The invention provides a system and a method for intelligently recording the voltage loss of a bus, aiming at overcoming the technical defect that the prior art cannot intelligently reflect the load condition of each feeder on the voltage loss bus.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a bus voltage loss intelligent recording system comprises an EMS system and a DMS system, and also comprises a data acquisition module, a data storage module, a bus voltage loss judgment module and a screening recording module;
the output ends of the EMS system and the DMS system are electrically connected with the input end of the data acquisition module, the output end of the EMS system is also electrically connected with the input end of the bus voltage loss judgment module, the output end of the data acquisition module is electrically connected with the input end of the data storage module, and the output end of the data storage module and the output end of the bus voltage loss judgment module are electrically connected with the input end of the screening and recording module;
the data acquisition module is used for respectively acquiring feeder line data and feeder line topology data from the EMS system and the DMS system in real time;
the data storage module is used for storing feeder line data and feeder line topology data to form a bus voltage loss standing book information base;
the bus voltage loss judging module is used for acquiring the state data of the bus in real time from the EMS system and judging whether the bus is in voltage loss;
and the screening and recording module is used for screening all feeders corresponding to the voltage-loss buses from the bus voltage-loss standing book information base according to the information of the voltage-loss buses and recording the feeders to form a data list.
In the scheme, the bus voltage loss judgment module judges the voltage loss bus according to the real-time state data of the bus, after manual confirmation, all feeders corresponding to the voltage loss bus are screened out from a bus voltage loss standing book information base by the screening and recording module, and the important information of all the screened feeders is recorded, so that a data list is formed and is checked by a worker, the worker can quickly master the load conditions of all the feeders of the voltage loss bus, and the fault processing efficiency of the worker is improved.
Preferably, the data acquisition module comprises an EMS data acquisition module and a DMS data acquisition module;
the output end of the EMS system is electrically connected with the input end of the EMS data acquisition module, the output end of the DMS system is electrically connected with the input end of the DMS data acquisition module, and the output end of the EMS data acquisition module and the output end of the DMS data acquisition module are both electrically connected with the input end of the data storage module;
the EMS data acquisition module is used for acquiring feeder line data from the EMS system in real time;
the DMS data acquisition module is used for acquiring feeder line topology data from the DMS system in real time.
Preferably, the screening device further comprises a display output module, wherein the input end of the display output module is electrically connected with the output end of the screening recording module;
the display output module is used for displaying important information after the bus is subjected to voltage loss in a multi-dimensional mode.
In the scheme, the display output module adopts the TAB page to display important information after the voltage of the bus is lost in a multi-dimensional manner according to the data list, and the load conditions of all feeder lines of the voltage-lost bus are fed back to workers more intuitively.
Preferably, the mobile terminal further comprises a short message module, wherein the input end of the short message module is electrically connected with the output end of the display output module;
the short message module is used for informing the manager of the information of the voltage loss of the bus in a short message mode.
In the scheme, the short message module sends the short message to inform the manager, so that the information reporting time is shortened, and the management efficiency and the fault processing efficiency are improved. The short message module sends the information of the voltage loss of the bus to managers of maintenance units to which all the feeder lines on the superior leader and the voltage loss bus belong in a short message mode; the short message template sent to the leader at the upper level is 'the bus to which the [ time ] [10kV feeder line belongs to the transformer substation ] [10kV feeder line ] is subjected to voltage loss, and the total loss [ the sum of the active power before the voltage loss of all the 10kV feeder lines on the voltage loss bus ] MW'; the short message template sent to managers of maintenance units to which all the feeders on the voltage-loss bus belong is that the current becomes 0A due to the loss of voltage of the bus and the name and the number of the [10kV feeder ] and the manager asks to send people to the name and the number of the contact switch on the [10kV feeder ] to arrange the power transfer operation.
Preferably, the feeder data includes the name and number of the feeder, a substation to which the feeder belongs, a bus to which the feeder belongs, a real-time current value of the feeder, real-time active power of the feeder, a maximum current value seven days before the feeder, and a maximum current limit value of the feeder;
the feeder line topology data comprises the name and the number of the feeder line, the name and the number of a contact switch on the feeder line, whether the contact switch on the feeder line is controllable or not, the name and the number of a transfer feeder line, a maintenance unit to which the feeder line belongs and the looped network diagram number of the feeder line.
Preferably, the bus voltage-loss ledger information base is formed by merging and storing feeder line data and feeder line topology data according to the name and the number of the feeder line.
In the above scheme, the information stored in the bus voltage-loss standing book information base includes the name and number of the feeder, the substation to which the feeder belongs, the bus to which the feeder belongs, the real-time current value of the feeder, the real-time active power of the feeder, the maximum current value seven days before the feeder, the maximum current limit value of the feeder, the name and number of a tie switch on the feeder, whether the tie switch on the feeder is controllable, the name and number of a transfer feeder, the maintenance unit to which the feeder belongs, and the ring network diagram number of the feeder.
Preferably, the important information displayed in multiple dimensions includes: the method comprises the following steps of obtaining the name and the number of a feeder line, a transformer substation to which the feeder line belongs, a bus to which the feeder line belongs, a current value before the feeder line loses voltage, active power before the feeder line loses voltage, the name and the number of a contact switch on the feeder line, whether the contact switch on the feeder line is controllable or not, the name and the number of a transfer feeder line and whether a transfer condition is met or not.
In the above-mentioned scheme, the staff can know the load condition of all feeders of decompression generating line fast and make the power supply scheme that changes in the important information of multidimension degree show, improves fault handling efficiency.
Preferably, the supply transfer condition is that the sum of the current value before the voltage of the feeder line is lost and the real-time current value of the supply transfer feeder line is lower than the minimum value of the maximum current limit value of the feeder line and the maximum current limit value of the supply transfer feeder line.
A bus voltage loss intelligent recording method is realized by the bus voltage loss intelligent recording system, and comprises the following steps:
s1: respectively acquiring feeder line data and feeder line topology data in real time through an EMS data acquisition module and a DMS data acquisition module;
s2: the data storage module combines and stores the feeder line data and the feeder line topology data to form a bus voltage loss standing book information base and updates the bus voltage loss standing book information base in real time;
s3: the bus voltage loss judgment module acquires state data of a bus in real time and judges whether the bus is in voltage loss;
if the bus is under voltage loss, executing the step S4;
if the bus is not under voltage loss, the step S3 is executed again;
s4: the staff confirms whether the bus is under voltage loss;
if the staff confirms that the bus is under the voltage loss, the step S5 is executed;
if the staff confirms that the bus is not under the voltage loss, the step S3 is returned, and the bus is not subjected to the voltage loss judgment;
s5: screening all feeder lines corresponding to the voltage-loss buses from a bus voltage-loss standing book information base according to the information of the voltage-loss buses, and recording to form a data list so as to realize intelligent recording of the voltage-loss of the buses;
s6: the display output module displays important information after the bus is subjected to voltage loss in a multi-dimensional mode according to the data list; meanwhile, the short message module informs the manager of the information of bus voltage loss in a short message mode.
Preferably, in step S4, the bus voltage loss judgment module obtains the three-phase voltage value of the bus, the position state of the main-transformer-low switch of the bus, the position state of the section switch of the bus, and the current values of all the feeders of the bus in real time from the EMS system, and judges whether the bus is voltage loss by one of the following four ways:
the first method needs to satisfy the following two conditions at the same time:
a1, the three-phase voltage value of a bus is 0kV;
a2, the current values of all the feeder lines of the bus are 0A;
the second method simultaneously satisfies the following two conditions:
b1, a main transformer low-change switch of the bus is in a brake-off position;
b2, the section switch of the bus is in a brake separating position;
the third method simultaneously satisfies the following two conditions:
c1, the three-phase voltage value of the bus is 0kV;
c2, the section switch of the bus is in a brake separating position;
the fourth mode simultaneously satisfies the following two conditions:
d1, the three-phase voltage value of the bus is 0kV;
d2, the main transformer low-change switch of the bus is in the open position.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention provides a bus voltage loss intelligent recording system and method.A bus voltage loss judging module judges a voltage loss bus according to real-time state data of the bus, after manual confirmation, a screening recording module screens all feeder lines corresponding to the voltage loss bus from a bus voltage loss standing book information base, and records important information of all screened feeder lines, so that a data list is formed for a worker to check, the worker can quickly master the load conditions of all feeder lines of the voltage loss bus, and the fault processing efficiency of the worker is improved.
Drawings
FIG. 1 is a schematic diagram of the module connection of the present invention;
FIG. 2 is a flow chart of the steps for implementing the present invention;
wherein: 1. an EMS system; 2. a DMS system; 3. a data acquisition module; 31. an EMS data acquisition module; 32. a DMS data acquisition module; 4. a data storage module; 5. a bus voltage loss judgment module; 6. a screening recording module; 7. a display output module; 8. and a short message module.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described with reference to the drawings and the embodiments.
Example 1
As shown in fig. 1, an intelligent bus voltage loss recording system includes an EMS system 1 and a DMS system 2, and further includes a data acquisition module 3, a data storage module 4, a bus voltage loss judgment module 5, and a screening recording module 6;
the output ends of the EMS system 1 and the DMS system 2 are electrically connected with the input end of the data acquisition module 3, the output end of the EMS system 1 is also electrically connected with the input end of the bus under-voltage judgment module 5, the output end of the data acquisition module 3 is electrically connected with the input end of the data storage module 4, and the output end of the data storage module 4 and the output end of the bus under-voltage judgment module 5 are electrically connected with the input end of the screening and recording module 6;
the data acquisition module 3 is used for respectively acquiring feeder line data and feeder line topology data from the EMS system 1 and the DMS system 2 in real time;
the data storage module 4 is used for storing feeder line data and feeder line topology data to form a bus voltage loss standing book information base;
the bus voltage loss judging module 5 is configured to obtain bus state data from the EMS system 1 in real time, and judge whether the bus is voltage loss;
and the screening and recording module 6 is used for screening all the feeders corresponding to the voltage-loss buses from the bus voltage-loss standing book information base according to the information of the voltage-loss buses and recording the feeders to form a data list.
In the implementation process, the bus voltage loss judgment module 5 judges the voltage loss bus according to the real-time state data of the bus, after manual confirmation, the screening and recording module 6 screens all feeder lines corresponding to the voltage loss bus from the bus voltage loss account information base, and records important information of all screened feeder lines, so that a data list is formed and is checked by a worker, the worker can quickly master the load conditions of all feeder lines of the voltage loss bus, and the fault processing efficiency of the worker is improved.
More specifically, the data collection module 3 includes an EMS data collection module 31 and a DMS data collection module 32;
the output end of the EMS system 1 is electrically connected with the input end of the EMS data acquisition module 31, the output end of the DMS system 2 is electrically connected with the input end of the DMS data acquisition module 32, and the output end of the EMS data acquisition module 31 and the output end of the DMS data acquisition module 32 are both electrically connected with the input end of the data storage module 4;
the EMS data collecting module 31 is configured to collect feeder data from the EMS system 1 in real time;
the DMS data acquisition module 32 is configured to acquire feeder topology data from the DMS system 2 in real time.
More specifically, the system further comprises a display output module 7, wherein an input end of the display output module 7 is electrically connected with an output end of the screening recording module 6;
and the display output module 7 is used for displaying important information after the bus is subjected to voltage loss in a multi-dimensional manner.
In the implementation process, the display output module 7 adopts a TAB page to display important information after the voltage of the bus is lost in a multi-dimensional manner according to the data list, and more intuitively feeds back the load conditions of all the feeder lines of the voltage-lost bus to workers.
More specifically, the mobile terminal further comprises a short message module 8, wherein an input end of the short message module 8 is electrically connected with an output end of the display output module 7;
the short message module 8 is used for notifying the manager of the bus voltage loss information in a short message mode.
In the implementation process, the short message module 8 sends a short message to inform a manager, so that the information reporting time is shortened, and the management efficiency and the fault processing efficiency are improved. The short message module 8 sends the information of the voltage loss of the bus to a superior leader and managers of maintenance units to which all the feeder lines on the voltage-loss bus belong in a short message mode; the short message template sent to the leader at the upper level is 'the bus to which the [ time ] [10kV feeder line belongs to the transformer substation ] [10kV feeder line ] is subjected to voltage loss, and the total loss [ the sum of the active power before the voltage loss of all the 10kV feeder lines on the voltage loss bus ] MW'; the short message template sent to the managers of the maintenance units to which all the feeder lines on the voltage-loss bus belong is that the current becomes 0A due to the loss of voltage of the bus, and a person is required to be sent to the name and the number of the contact switch on the 10kV feeder line immediately to arrange the power transfer operation.
More specifically, the feeder data includes the name and number of the feeder, a substation to which the feeder belongs, a bus to which the feeder belongs, a real-time current value of the feeder, real-time active power of the feeder, a maximum current value seven days before the feeder, and a maximum current limit value of the feeder;
the feeder line topology data comprises the name and the number of the feeder line, the name and the number of a contact switch on the feeder line, whether the contact switch on the feeder line is controllable or not, the name and the number of a transfer feeder line, a maintenance unit to which the feeder line belongs and the looped network diagram number of the feeder line.
More specifically, the bus voltage-loss ledger information base is formed by merging and storing feeder line data and feeder line topology data according to the name and the number of the feeder line.
In the implementation process, the information stored in the bus voltage-loss ledger information base comprises the name and the number of a feeder line, a transformer substation to which the feeder line belongs, a bus to which the feeder line belongs, a real-time current value of the feeder line, real-time active power of the feeder line, a maximum current value of the feeder line seven days ago, a maximum current limit value of the feeder line, the name and the number of a contact switch on the feeder line, whether the contact switch on the feeder line is controllable, the name and the number of a transfer feeder line, a maintenance unit to which the feeder line belongs and a looped network diagram number of the feeder line.
More specifically, the important information displayed in multiple dimensions includes: the method comprises the following steps of obtaining the name and the number of a feeder line, a transformer substation to which the feeder line belongs, a bus to which the feeder line belongs, a current value before the feeder line loses voltage, active power before the feeder line loses voltage, the name and the number of a contact switch on the feeder line, whether the contact switch on the feeder line is controllable or not, the name and the number of a transfer feeder line and whether a transfer condition is met or not.
In the implementation process, the working personnel can quickly know the load conditions of all the feeders of the voltage-loss bus and make a power supply transfer plan through the important information displayed in multiple dimensions, and the fault processing efficiency is improved.
More specifically, the supply transfer condition is that the sum of the current value before the voltage of the feeder line is lost and the real-time current value of the supply transfer feeder line is lower than the minimum value of the maximum current limit value of the feeder line and the maximum current limit value of the supply transfer feeder line.
Example 2
As shown in fig. 2, an intelligent recording method for bus voltage loss is implemented by the intelligent recording system for bus voltage loss, and includes the following steps:
s1: respectively acquiring feeder line data and feeder line topology data in real time through an EMS data acquisition module 31 and a DMS data acquisition module 32;
s2: the data storage module 4 combines and stores the feeder line data and the feeder line topology data to form a bus voltage-loss standing book information base and updates the bus voltage-loss standing book information base in real time;
s3: the bus voltage loss judgment module 5 acquires the state data of the bus in real time and judges whether the bus is in voltage loss or not;
if the bus is under voltage loss, executing the step S4;
if the bus is not under voltage loss, the step S3 is executed again;
s4: the staff confirms whether the bus is under voltage loss;
if the staff confirms that the bus is under the voltage loss, the step S5 is executed;
if the staff confirms that the bus is not under the voltage loss, the step S3 is returned, and the bus is not judged to be under the voltage loss again;
s5: screening all feeder lines corresponding to the voltage-loss buses from a bus voltage-loss standing book information base according to the information of the voltage-loss buses, and recording to form a data list so as to realize intelligent recording of the voltage loss of the buses;
s6: the display output module 7 displays important information after the bus is subjected to voltage loss in a multi-dimensional mode according to the data list; meanwhile, the short message module 8 informs the manager of the information of the voltage loss of the bus in a short message mode.
More specifically, in step S4, the bus voltage loss determining module 5 obtains the three-phase voltage value of the bus, the position state of the main-transformer-low switch of the bus, the position state of the section switch of the bus, and the current values of all the feeders of the bus in real time from the EMS system 1, and determines whether the bus is voltage loss by one of the following four ways:
the first method needs to satisfy the following two conditions at the same time:
a1, the three-phase voltage value of a bus is 0kV;
a2, the current values of all the feeder lines of the bus are 0A;
the second method simultaneously satisfies the following two conditions:
b1, a main transformer low-change switch of the bus is in an opening position;
b2, the section switch of the bus is in a brake separating position;
the third mode needs to satisfy the following two conditions at the same time:
c1, the three-phase voltage value of the bus is 0kV;
c2, the section switch of the bus is in a brake separating position;
the fourth mode simultaneously satisfies the following two conditions:
d1, the three-phase voltage value of the bus is 0kV;
d2, the main transformer low-change switch of the bus is in the opening position.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A bus voltage loss intelligent recording system comprises an EMS system (1) and a DMS system (2), and is characterized by further comprising a data acquisition module (3), a data storage module (4), a bus voltage loss judgment module (5) and a screening recording module (6);
the output ends of the EMS system (1) and the DMS system (2) are electrically connected with the input end of the data acquisition module (3), the output end of the EMS system (1) is also electrically connected with the input end of the bus voltage loss judgment module (5), the output end of the data acquisition module (3) is electrically connected with the input end of the data storage module (4), and the output end of the data storage module (4) and the output end of the bus voltage loss judgment module (5) are electrically connected with the input end of the screening recording module (6);
the data acquisition module (3) is used for respectively acquiring feeder line data and feeder line topology data from the EMS system (1) and the DMS system (2) in real time;
the data storage module (4) is used for storing feeder line data and feeder line topology data to form a bus voltage-loss standing book information base;
the bus voltage loss judging module (5) is used for acquiring the state data of the bus from the EMS system (1) in real time and judging whether the bus is in voltage loss;
and the screening and recording module (6) is used for screening all feeders corresponding to the voltage-loss buses from the bus voltage-loss standing book information base according to the information of the voltage-loss buses and recording the feeders to form a data list.
2. The bus voltage loss intelligent recording system according to claim 1, wherein the data acquisition module (3) comprises an EMS data acquisition module (31) and a DMS data acquisition module (32);
the output end of the EMS system (1) is electrically connected with the input end of the EMS data acquisition module (31), the output end of the DMS system (2) is electrically connected with the input end of the DMS data acquisition module (32), and the output end of the EMS data acquisition module (31) and the output end of the DMS data acquisition module (32) are both electrically connected with the input end of the data storage module (4);
the EMS data acquisition module (31) is used for acquiring feeder line data from the EMS system (1) in real time;
the DMS data acquisition module (32) is used for acquiring feeder line topology data from the DMS system (2) in real time.
3. The bus voltage loss intelligent recording system according to claim 1, further comprising a display output module (7), wherein an input end of the display output module (7) is electrically connected with an output end of the screening recording module (6);
the display output module (7) is used for displaying important information after the bus is subjected to voltage loss in a multi-dimensional mode.
4. The bus voltage loss intelligent recording system according to claim 3, further comprising a short message module (8), wherein an input end of the short message module (8) is electrically connected with an output end of the display output module (7);
the short message module (8) is used for informing a manager of the bus voltage loss information in a short message mode.
5. The bus voltage loss intelligent recording system according to claim 2, wherein the feeder data comprises the name and number of the feeder, the substation to which the feeder belongs, the bus to which the feeder belongs, the real-time current value of the feeder, the real-time active power of the feeder, the maximum current value seven days before the feeder, and the maximum current limit value of the feeder;
the feeder line topology data comprises the name and the number of the feeder line, the name and the number of a contact switch on the feeder line, whether the contact switch on the feeder line is controllable or not, the name and the number of a transfer feeder line, a maintenance unit to which the feeder line belongs and the looped network diagram number of the feeder line.
6. The bus voltage loss intelligent recording system according to claim 5, wherein the bus voltage loss ledger information base is formed by merging and storing feeder line data and feeder line topology data according to the name and number of a feeder line.
7. The bus voltage loss intelligent recording system according to claim 3, wherein the important information displayed in multiple dimensions comprises: the method comprises the following steps of providing a feeder line, a transformer substation to which the feeder line belongs, a bus to which the feeder line belongs, a current value before the feeder line loses voltage, active power before the feeder line loses voltage, the name and the number of a contact switch on the feeder line, whether the contact switch on the feeder line is controllable, the name and the number of a transfer feeder line and whether a transfer condition is met.
8. The system of claim 7, wherein the switch-over condition is that the sum of the current value before the feeder loses voltage and the real-time current value of the switch-over feeder is lower than the minimum value of the maximum current limit value of the feeder and the maximum current limit value of the switch-over feeder.
9. The intelligent bus voltage loss recording method is characterized by comprising the following steps of:
s1: feeder line data and feeder line topology data are respectively acquired in real time through an EMS data acquisition module (31) and a DMS data acquisition module (32);
s2: the data storage module (4) combines and stores the feeder line data and the feeder line topology data to form a bus voltage-loss ledger information base and updates the bus voltage-loss ledger information base in real time;
s3: the bus voltage loss judgment module (5) acquires the state data of the bus in real time and judges whether the bus is in voltage loss;
if the bus is under voltage loss, executing the step S4;
if the bus is not under voltage loss, the step S3 is executed again;
s4: the staff confirms whether the bus is under voltage loss;
if the staff confirms that the bus is under the voltage loss, the step S5 is executed;
if the staff confirms that the bus is not under the voltage loss, the step S3 is returned, and the bus is not subjected to the voltage loss judgment;
s5: screening all feeder lines corresponding to the voltage-loss buses from a bus voltage-loss standing book information base according to the information of the voltage-loss buses, and recording to form a data list so as to realize intelligent recording of the voltage-loss of the buses;
s6: the display output module (7) displays important information after the bus is subjected to voltage loss in a multi-dimensional mode according to the data list; meanwhile, the short message module (8) informs the manager of the bus voltage loss information in a short message mode.
10. The method for intelligently recording the voltage loss of the bus according to claim 9, wherein in step S4, the bus voltage loss judging module (5) obtains the three-phase voltage value of the bus, the position state of the main change-down switch of the bus, the position state of the section switch of the bus and the current values of all the feeders of the bus in real time from the EMS system (1), and judges whether the bus is voltage loss by one of the following four ways:
the first method needs to satisfy the following two conditions at the same time:
a1, the three-phase voltage value of a bus is 0kV;
a2, the current values of all the feeder lines of the bus are 0A;
the second method simultaneously satisfies the following two conditions:
b1, a main transformer low-change switch of the bus is in a brake-off position;
b2, the section switch of the bus is in the opening position;
the third method simultaneously satisfies the following two conditions:
c1, the three-phase voltage value of the bus is 0kV;
c2, the section switch of the bus is in a brake separating position;
the fourth mode simultaneously satisfies the following two conditions:
d1, the three-phase voltage value of the bus is 0kV;
d2, the main transformer low-change switch of the bus is in the opening position.
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| WO2013078661A1 (en) * | 2011-12-01 | 2013-06-06 | 中国北车股份有限公司大连电力牵引研发中心 | Data recording system |
| CN108808675A (en) * | 2018-07-13 | 2018-11-13 | 广东电网有限责任公司 | A kind of substation power loss distribution turns the automatic generation method of power supply plan |
| CN109560543A (en) * | 2018-11-14 | 2019-04-02 | 广东电网有限责任公司江门供电局 | Dynamic contingency prediction scheme analysis method and system based on main distribution Integrated Model |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013078661A1 (en) * | 2011-12-01 | 2013-06-06 | 中国北车股份有限公司大连电力牵引研发中心 | Data recording system |
| CN108808675A (en) * | 2018-07-13 | 2018-11-13 | 广东电网有限责任公司 | A kind of substation power loss distribution turns the automatic generation method of power supply plan |
| CN109560543A (en) * | 2018-11-14 | 2019-04-02 | 广东电网有限责任公司江门供电局 | Dynamic contingency prediction scheme analysis method and system based on main distribution Integrated Model |
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