CN115622248A - Load accurate control method based on distribution network automation system - Google Patents
Load accurate control method based on distribution network automation system Download PDFInfo
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- CN115622248A CN115622248A CN202211325011.8A CN202211325011A CN115622248A CN 115622248 A CN115622248 A CN 115622248A CN 202211325011 A CN202211325011 A CN 202211325011A CN 115622248 A CN115622248 A CN 115622248A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000011161 development Methods 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims description 15
- 230000007547 defect Effects 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
Classifications
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
-
- 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
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
Abstract
The invention discloses a load accurate control method based on a distribution network automation system, which relates to the technical field of distribution network automation control and comprises the following steps: s1, maintaining a distribution network sequence position table; s2, accurate pull calculation of a distribution network; s3, batch control of distribution network loads; and S4, actively presetting a distribution network. The load accurate control method based on the distribution network automation system realizes the rapid and accurate control of non-civil loads below a 10kV special variable boundary switch, greatly increases the controllable load capacity, has the load control response speed reaching the second level, practically reduces the load control pressure under the condition of unbalanced power supply and demand or overload of accident equipment, lays a good foundation for the development of a provincial and local distribution integrated load accurate control function, aims at the relation between a supply side and a demand side, and can realize the power supply reliability of both civil and important loads while ensuring the safe and stable operation of a power grid by the accurate control of a distribution network when the supply is less than the demand.
Description
Technical Field
The invention relates to the technical field of distribution network automation control, in particular to a load accurate control method based on a distribution network automation system.
Background
At present, the load control sequence table of the power grid in Shandong relates to the situation that the total load of non-civil loads accounts for less than 10% of the load of the whole power grid, and is influenced by the situation that the recent power supply and demand situation in the whole country is continuously tense, and the controllable non-civil load capacity needs to be expanded urgently. The current expansion schemes are two, namely, a load batch control function is deployed in a distribution automation system (DMS system), and a non-civil load below a 10kV demarcation switch is added; and secondly, a dispatching automation system (EMS system) and a power consumption information acquisition system (negative control system) are communicated, and a 0.4kV low-voltage non-civil load is increased.
Through preliminary investigation, the Shandong power grid electricity utilization information acquisition system only has a load control function, but is not put into practical application and is difficult to realize in a short time. However, the distribution automation line of the Shandong power grid accounts for up to 98% of all the distribution automation lines, the remotely-controllable high-voltage distribution switch accounts for 47%, and the coverage rate of the dedicated-transformation "three-remote" terminal in the distribution automation line and the proportion of the user-boundary switch-installed "three-remote" distribution automation terminal are relatively high. Therefore, a load batch control function is developed in the DMS system, and the user-specific variable boundary switch is controlled through the DMS system, so that the load batch control capacity pressure can be further reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a load accurate control method based on a distribution network automation system, and solves the problems in the background art.
In order to achieve the above purpose, the invention is realized by the following technical scheme, and the load accurate control method based on the distribution network automation system comprises the following steps:
s1, distribution network sequence table maintenance
Establishing a distribution automation system, and developing a data interface according to a newly developed function as required by combining the existing functions of a distribution network automation master station and a scheduling master station, so that a distribution network supports the import, storage and synchronous updating and maintenance of a sequence table;
s2, accurate pull calculation of distribution network
According to the data interface development of the distribution automation system established by the maintenance of the distribution network sequence table in the step, the distribution network supports the sequence table and the load needing to be pulled, and a pull equipment list is calculated;
s3, distribution network load batch control
The distribution network supports the load needing to be pulled in sequence of the position table, calculates a pulling equipment list to reduce the pulling operation time, and has a function of controlling multiple equipment in batches in the development expenditure of the distribution network;
s4, distribution network active presetting
The master station sends preset commands to the terminals in batches, judges the preset result of the switch, presets and executes multi-state control;
s5, query statistic function
The distribution network system interface supports the inquiry of historical route pulling records, can trace and is convenient for subsequent route pulling recovery operation.
Furthermore, in the maintenance process of the distribution network sequence position table of the S1, the function of automatically generating the pull-out list by the distribution network DMS system is realized, and the list of the prefecture pull-out equipment is automatically screened according to the input load value and the pull-out sequence position table maintained in the system.
Furthermore, the S1 distribution network sequence table has the function of screening equipment according to the transformer substation and the power supply area in the maintenance process.
Furthermore, in the S2 distribution network accurate route calculation process, the distribution and dispatching DMS automatically generates a control sequence according to the input total load amount to be routed, in combination with the route-routing sequence table and the current operating state of the switch, divides the flow to the distribution and county dispatches according to the responsibility of the switch dispatching range, performs control operation, and summarizes and displays control result information after control is completed.
Further, in the S4 distribution network active presetting process, when presetting and executing multi-state control preset state control, the master station issues a preset command to the terminal in batches, and when judging the switch preset result execution state control, the master station issues a remote control execution command to the terminal in batches, receives the terminal displacement result, and calculates the actual load shedding amount.
Furthermore, in the S4 distribution network active presetting process, in order to ensure accurate control success rate, the distribution network system needs to normalize the presetting function of the pull-out device in the sequence table, find defects in advance, and actively remove the defects.
Furthermore, in the process of S5 inquiring the statistical function, the distribution network system supports to inquire historical route drawing records, so that traceability is achieved, and subsequent route drawing recovery operation is facilitated.
The invention provides a load accurate control method based on a distribution network automation system, which has the following beneficial effects: the load accurate control method based on the distribution network automation system realizes the rapid and accurate control of the non-civil load below the 10kV special transformer demarcation switch, greatly increases the controllable load capacity, has the load control response speed reaching the second level, practically lightens the load control pressure under the condition of unbalanced power supply and demand or overload of accident equipment, and lays a good foundation for the development of the provincial and local distribution integrated load accurate control function.
Detailed Description
A load accurate control method based on a distribution network automation system comprises the following steps:
s1, distribution network sequence table maintenance
Establishing a distribution automation system, and developing a data interface according to a newly developed function as required by combining the existing functions of a distribution network automation master station and a scheduling master station, so that a distribution network supports the import, storage and synchronous updating and maintenance of a sequence table;
s1, in the process of maintaining a distribution network sequence table, a distribution network DMS system automatically generates a pull list function, and automatically screens a county pull list according to an input load value and a pull list maintained in the system;
s1, the distribution network sequence table has the function of screening equipment according to a transformer substation and a power supply area in the maintenance process;
s2, accurate pull calculation of distribution network
According to the data interface development of the distribution automation system established by the maintenance of the distribution network sequence table in the step, the distribution network supports the sequence table and the load needing to be pulled, and a pull equipment list is calculated;
s2, in the accurate pull calculation process of the distribution network, the distribution and dispatching DMS system automatically generates a control sequence according to the input load total amount needing to be pulled, in combination with a pull sequence table and the current operation state of a switch, divides the flow to distribution and county dispatching according to the responsibility of the switch dispatching range to carry out control operation, and summarizes and displays control result information after the control is finished;
s3, distribution network load batch control
The distribution network supports the load needing to be pulled in sequence of the position table, calculates a pulling equipment list to reduce the pulling operation time, and has a function of controlling multiple equipment in batches in the development expenditure of the distribution network;
s4, distribution network active presetting
The master station sends preset commands to the terminals in batches, judges the preset result of the switch, and presets and executes multi-state control;
s4, when presetting and executing multi-state control preset state control in the distribution network active presetting process, the master station sends a preset command to the terminal in batches, when judging the switch preset result execution state control, the master station sends a remote control execution command to the terminal in batches, receives the terminal displacement result and calculates the actual load shedding amount;
s4, in the distribution network active presetting process, in order to guarantee accurate control success rate, a distribution network system needs to normalize the presetting function of the pull-out equipment in the sequence table, find defects in advance and actively remove the defects;
s5, query statistic function
The distribution network system interface supports the inquiry of historical route pulling records, so that the tracing is realized, and the subsequent route pulling recovery operation is facilitated;
and S5, in the process of inquiring the statistical function, the distribution network system supports the inquiry of historical route pulling records, so that the tracing is realized, and the subsequent route pulling recovery operation is facilitated.
In summary, the method for accurately controlling the load based on the distribution network automation system includes the following steps:
s1, maintaining a distribution network sequence position table: the method comprises the steps that a distribution automation system is established, the existing functions of a distribution network automation master station and a scheduling master station are combined, data interface development is carried out according to the newly developed functions required, so that a distribution network supports the leading-in, storage and synchronous updating and maintenance of a sequence table, the function of automatically generating a pull list by a distribution network DMS system is realized, and according to an input load value and the pull sequence table maintained in the system, a distribution network DMS automatic pull list is automatically screened and simultaneously has the function of screening equipment according to a transformer substation and a power supply area;
s2, accurate route pulling calculation of a distribution network: according to data interface development of a power distribution automation system established by maintaining the distribution network sequence table in the step, the distribution network supports the load of the sequence table and the load needing to be pulled, a pull-out equipment list is calculated, a distribution and dispatching DMS system automatically generates a control sequence according to the input total load quantity needing to be pulled, the distribution and dispatching DMS system is combined with the pull-out sequence table and the current operation state of a switch, control operation is carried out by dividing to distribution and county dispatching according to the responsibility area of a switch dispatching management range, and control result information is collected and displayed after the control is finished;
s3, batch control of distribution network loads: the distribution network supports the functions of controlling multiple devices in batches according to the sequence table and the load needing to be pulled, and the pull equipment list is calculated to reduce the pull operation time;
s4, distribution network active presetting: the method comprises the steps that a main station sends preset commands to terminals in batches, judges switch preset results, presets and executes multi-state control, when the multi-state control preset state control is preset and executed in the distribution network active preset process S4, the main station sends the preset commands to the terminals in batches, when the switch preset result is judged and executed, the main station sends remote control execution commands to the terminals in batches, receives terminal displacement results, calculates the actual load shedding amount, and normally carries out the preset function of the pull-out equipment in a sequence table to find defects in advance and actively remove the defects in order to guarantee accurate control success rate;
s5, inquiring a statistical function: the distribution network system interface supports the inquiry of historical route pulling records, so that the traceability is realized, the subsequent route pulling recovery operation is facilitated, and the distribution network system supports the inquiry of the historical route pulling records, so that the traceability is realized, and the subsequent route pulling recovery operation is facilitated.
Claims (7)
1. A load accurate control method based on a distribution network automation system is characterized by comprising the following steps:
s1, distribution network sequence table maintenance
Establishing a distribution automation system, and developing a data interface according to a newly developed function as required by combining the existing functions of a distribution network automation master station and a scheduling master station, so that a distribution network supports the import, storage and synchronous updating and maintenance of a sequence table;
s2, accurate pull calculation of distribution network
According to the data interface development of the distribution automation system established by the maintenance of the distribution network sequence table in the step, the distribution network supports the sequence table and the load needing to be pulled, and a pull equipment list is calculated;
s3, distribution network load batch control
The distribution network supports the functions of controlling multiple devices in batches according to the sequence table and the load needing to be pulled, and the pull equipment list is calculated to reduce the pull operation time;
s4, distribution network active presetting
The master station sends preset commands to the terminals in batches, judges the preset result of the switch, presets and executes multi-state control;
s5, inquiring and counting functions
The distribution network system interface supports the inquiry of historical route pulling records, can trace and is convenient for subsequent route pulling recovery operation.
2. The method according to claim 1, wherein the method comprises the following steps: and in the maintenance process of the distribution network sequence table S1, the function of automatically generating a pull-out list by the distribution network DMS system is realized, and a distribution county pull-out equipment list is automatically screened according to the input load value and the pull-out sequence table maintained in the system.
3. The method according to claim 1, wherein the method comprises the following steps: the S1 distribution network sequence table has the function of screening equipment according to the transformer substation and the power supply area in the maintenance process.
4. The method according to claim 1, wherein the method comprises the following steps: and 2, in the accurate route pulling calculation process of the distribution network, the distribution and dispatching DMS system automatically generates a control sequence according to the input total load quantity needing to be pulled, in combination with a route pulling sequence table and the current operation state of the switch, divides the flow to the distribution and county dispatching according to the responsibility of the switch dispatching range to carry out control operation, and summarizes and displays control result information after the control is finished.
5. The method as claimed in claim 1, wherein the S4 distribution network active presetting process presets and executes a multi-state control preset state control, the master station issues a preset command to the terminals in batch, when judging a switch preset result execution state control, the master station issues a remote control execution command to the terminals in batch, receives a terminal displacement result, and calculates an actual load shedding amount.
6. The method as claimed in claim 1, wherein in order to ensure the success rate of accurate control in the S4 distribution network active presetting process, the distribution network system needs to normalize the function of presetting the pull-out devices in the sequence table, find defects in advance, and actively remove defects.
7. The method for accurately controlling the load based on the distribution network automation system according to claim 1, wherein in the S5 query statistical function process, the distribution network system supports the query of historical route pulling records, so that traceability is achieved, and subsequent route pulling recovery operation is facilitated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211325011.8A CN115622248A (en) | 2022-10-27 | 2022-10-27 | Load accurate control method based on distribution network automation system |
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| CN202211325011.8A CN115622248A (en) | 2022-10-27 | 2022-10-27 | Load accurate control method based on distribution network automation system |
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