CN102437653B - Power flexible load control system and control method thereof - Google Patents

Power flexible load control system and control method thereof Download PDF

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Publication number
CN102437653B
CN102437653B CN201110446475.XA CN201110446475A CN102437653B CN 102437653 B CN102437653 B CN 102437653B CN 201110446475 A CN201110446475 A CN 201110446475A CN 102437653 B CN102437653 B CN 102437653B
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load
control
loop
controlled
limit
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CN102437653A (en
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周小波
孙列
张卫红
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SHANGHAI ELECTRIC POWER INDUSTRIAL CO LTD
SHANGHAI SUNRISE POWER TECHNOLOGY CO LTD
State Grid Shanghai Electric Power Co Ltd
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SHANGHAI ELECTRIC POWER INDUSTRIAL Co Ltd
SHANGHAI SUNRISE POWER TECHNOLOGY Co Ltd
State Grid Shanghai Electric Power Co Ltd
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Priority to CN201110446475.XA priority Critical patent/CN102437653B/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention provides a power flexible load control system and a control method thereof, relating to the technical field of power load control and solving the technical problem of the power load control. The system comprises a load control center, a flexible load controller and a plurality of controlled load loops, wherein each controlled load loop is provided with a trip controller for controlling the loop to be switched on and off, and a load monitoring device for collecting electric signals of the loop; the flexible control controller is connected with the load monitoring devices in a communication manner, and a load information collecting module is connected with the main power supply output end of a power distribution station; the load control center is used for sending load control information to the flexible load controller in a wireless communication manner; and loads are removed by the flexible load controller according to a sequence of the priority levels of the controlled load loops from bottom up, and the follow-up load removing motion is stopped until the total power supply load of the power supply side meets a load limit requirement. According to the system and method provided by the invention, the power flexible load control can be realized.

Description

Power flexible load control system and control method thereof
Technical field
The present invention relates to electricity load control technology, particularly relate to the technology of a kind of power flexible load control system and control method thereof.
Background technology
Current domestic electrical system has generally installed load control system in large user side.
As shown in Figure 3, existing power load control system is formed primarily of a load control unit 1 ' and long-range the center of load control 5 ', and load control unit 1 ' is connected with GPRS communication with the center of load control 5 '.The center of load control issues limit load instruction according to current system load level to power distribution station, and limit load instruction comprises limit load amount (active power) and actuation time.Also namely the center of load control notifies that this load control unit will limit current loads to the level of specifying within the time of specifying, and such as, reduce by 30% load in 15 minutes, load control unit, after receiving limit load instruction, generally can send voice message alarm.
If load control unit detects that load does not have to drop to appointment number at the appointed time, then directly control each controlled-load loop 2 ' and sequentially excise load, until meet the limit load requirement of the center of load control, and the order of excision load sets out according to the order preset, and cannot change.
If there is operator on duty to obtain limit load information in time, and broadcast announcement subordinate user at the appointed time interior artificial cut-out load, make the at the appointed time interior requirement that can reach the center of load control of supply side total load, then load control unit can not perform load excision operation, and all cut loads must by manually recovering after spatial load forecasting is removed.
In sum, there is following problem in existing power load control system: 1) spatial load forecasting takes " pressure " pulling load with the spatial load forecasting demand meeting supply side for target completely, do not consider coordination and the control of user side, if cut load loop is responsive to power supply quality, then inevitably cause loss of outage; 2) existing power load control system makes terminal use almost without any responding the ability of rationing the power supply and requiring, even if " notice " information of load control terminal, also need property management personnel to take the mode of manual notifications could to ration the power supply information to terminal use's notice, there is time delay and transmission of information smooth and cause the possibility of forcing limit load; 3) load control unit is according to the permanent order pulling load preset, cause the user fixed to be rationed the power supply, often cause the contradiction between user and property, all users have contribution to total power load, but responsibility of rationing the power supply but only is born by fixed-line subscriber, is unfair.
Summary of the invention
For the defect existed in above-mentioned prior art, technical problem to be solved by this invention is to provide one and can realizes subscriber's side powered loop and fully participate in Load Regulation process, avoid the unexpected power failure in subscriber's side powered loop, avoid important subscriber's side powered loop to have a power failure, power flexible load control system and the control method thereof of power flexible spatial load forecasting can be realized.
In order to solve the problems of the technologies described above, a kind of power flexible load control system provided by the present invention, comprise the center of load control, and be arranged on the flexible load controller of power distribution station, connect the multiple subscriber's side powered loop of each power supply output branch end of power distribution station respectively;
It is characterized in that: in described subscriber's side powered loop, many loops are had to be controlled-load loop, a measure and control of load unit is equipped with in each controlled-load loop, described measure and control of load unit comprises one for controlling the tripping controller of loop, place break-make, and one for gathering the measure and control of load device of loop, place electric signal;
Described tripping controller is provided with one for controlling the electrical control end of its deciliter, and described measure and control of load device is provided with a control signal output, and its control signal output receives the control end of this unit tripping controller;
Described flexible load controller is built-in with an information on load acquisition module, and connects each measure and control of load device by correspondence, and its information on load acquisition module connects total power supply output of power distribution station;
Described flexible load controller with communication connected load control centre, or passes through a conventional load controller with communication connected load control centre.
The control method of power flexible load control system provided by the present invention, it is characterized in that, concrete steps are as follows:
For every bar controlled-load loop settings priority;
When needing to implement spatial load forecasting to power distribution station, the center of load control issues load control information and limit load instruction to flexible load controller, and described load control information comprises limit load amount, limit load actuation time;
Need to power distribution station discharge control time, the center of load control issues load restoration instruction to flexible load controller;
After flexible load controller receives load control information and limit load instruction, after calculating limit load according to the limit load amount in load control information, the limit load of power distribution station supplies electric output, implement spatial load forecasting operation to each controlled-load loop, the implementation step of concrete spatial load forecasting operation is as follows:
1) flexible load controller communicates with each measure and control of load device, by the load value in each each controlled-load loop of measure and control of load device Real-time Obtaining;
2) flexible load controller generates a limit load list according to the priority in the limit load amount in load control information, each controlled-load loop, the load value in each controlled-load loop;
Many controlled-load loops and load value thereof is included in described limit load list, and the priority in each controlled-load loop in limit load list is all lower than the priority in each controlled-load loop outside limit load list, each controlled-load loop according to priority sequential from low to high in limit load list, in limit load list, the load value sum in each controlled-load loop is more than or equal to the limit load amount in load control information;
3) first controlled-load loop got by flexible load controller from limit load list;
4) flexible load controller sends a trip command to the measure and control of load device in the controlled-load loop of getting from limit load list, namely measure and control of load device exports a trip signal after receiving trip command, make this unit tripping controller perform trip operation, make the controlled-load loop open circuit at its place;
5) flexible load controller gathers the current power supply output total load of power distribution station, and whether the current power supply output total load detecting power distribution station reaches the limit load of power distribution station for electric output;
If the current power supply of power distribution station exports total load be greater than the limit load of power distribution station for electric output, then forward step 6 to, otherwise then the spatial load forecasting operation in each controlled-load loop is terminated;
6) flexible load controller judges whether to arrive limit load list tail end;
If do not arrive limit load list tail end, then from limit load list, get next controlled-load loop, then go to step 4, otherwise then the spatial load forecasting operation in each controlled-load loop is terminated;
After flexible load controller receives load restoration instruction, a reclosing command is sent to the measure and control of load device in each controlled-load loop, and limit load number of times, limit load time and limit load amount are added up, namely measure and control of load device exports a switching signal after receiving reclosing command, make this unit tripping controller perform feed motion, make the controlled-load loop conducting at its place.
Power flexible load control system provided by the invention and control method thereof, flexible load controller is according to load control information, sequentially load is excised from low to high by the priority in controlled-load loop, and after often excising the load in a controlled-load loop, namely detect the power supply total load of supply side, when power supply total load as supply side has reached limit load requirement, namely the action of follow-up excision load is stopped, therefore subscriber's side powered loop can fully participate in Load Regulation process, the unexpected power failure in subscriber's side powered loop can be avoided, important subscriber's side powered loop is avoided to have a power failure, power flexible spatial load forecasting can be realized.
Accompanying drawing explanation
Fig. 1 is the structural representation of the power flexible load control system of the embodiment of the present invention;
Fig. 2 is the control flow chart of the power flexible load control system of the embodiment of the present invention;
Fig. 3 is the structural representation of existing power load control system.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing and be described in further detail embodiments of the invention, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar change thereof, all should list protection scope of the present invention in.
As shown in Figure 1, a kind of power flexible load control system that the embodiment of the present invention provides, comprise the center of load control (not shown), and be arranged on the flexible load controller of power distribution station, connect the multiple subscriber's side powered loop 2 of each power supply output branch end of power distribution station respectively;
It is characterized in that: in described subscriber's side powered loop 2, many loops are had to be controlled-load loop, a measure and control of load unit 3 is equipped with in each controlled-load loop, described measure and control of load unit 3 comprises one for controlling the tripping controller of loop, place break-make, and one for gathering the measure and control of load device of loop, place electric signal;
Described tripping controller is provided with one for controlling the electrical control end of its deciliter, and described measure and control of load device is provided with a control signal output, and its control signal output receives the control end of this unit tripping controller;
Described flexible load controller 1 is built-in with an information on load acquisition module, and connects each measure and control of load device by correspondence, and its information on load acquisition module connects total power supply output 4 of power distribution station;
Described flexible load controller 1 with communication connected load control centre, or passes through a conventional load controller with communication connected load control centre.
In the embodiment of the present invention, described controlled-load loop is the inessential current supply circuit (as air conditioner load loop etc.) that can participate in spatial load forecasting in limit load situation, in extreme circumstances can using all subscriber's side powered loops all as controlled-load loop.
In the embodiment of the present invention, described flexible load controller is the industrial computer possessing communication capacity.
In the embodiment of the present invention, described measure and control of load device is prior art.
In the embodiment of the present invention, described tripping controller is the intelligent moulded case circuit breaker possessing distant control function, or possesses the shunt release of tripping operation control, or the combination of conventional breaker of plastic casing and shunt release.
As shown in Figure 2, the control method of a kind of power flexible load control system that the embodiment of the present invention provides, it is characterized in that, concrete steps are as follows:
For every bar controlled-load loop settings priority;
When needing to implement spatial load forecasting to power distribution station, the center of load control issues load control information and limit load instruction to flexible load controller, and described load control information comprises limit load amount, limit load actuation time;
Need to power distribution station discharge control time, the center of load control issues load restoration instruction to flexible load controller;
After flexible load controller receives load control information and limit load instruction, after calculating limit load according to the limit load amount in load control information, the limit load of power distribution station supplies electric output, implement spatial load forecasting operation to each controlled-load loop, the implementation step of concrete spatial load forecasting operation is as follows:
1) flexible load controller communicates with each measure and control of load device, by the load value in each each controlled-load loop of measure and control of load device Real-time Obtaining;
2) flexible load controller generates a limit load list according to the priority in the limit load amount in load control information, each controlled-load loop, the load value in each controlled-load loop;
Many controlled-load loops and load value thereof is included in described limit load list, and the priority in each controlled-load loop in limit load list is all lower than the priority in each controlled-load loop outside limit load list, each controlled-load loop according to priority sequential from low to high in limit load list, in limit load list, the load value sum in each controlled-load loop is more than or equal to the limit load amount in load control information;
3) first controlled-load loop got by flexible load controller from limit load list;
4) flexible load controller sends a trip command to the measure and control of load device in the controlled-load loop of getting from limit load list, namely measure and control of load device exports a trip signal after receiving trip command, make this unit tripping controller perform trip operation, make the controlled-load loop open circuit at its place;
5) flexible load controller gathers the current power supply output total load of power distribution station, and whether the current power supply output total load detecting power distribution station reaches the limit load of power distribution station for electric output;
If the current power supply of power distribution station exports total load be greater than the limit load of power distribution station for electric output, then forward step 6 to, otherwise then the spatial load forecasting operation in each controlled-load loop is terminated;
6) flexible load controller judges whether to arrive limit load list tail end;
If do not arrive limit load list tail end, then from limit load list, get next controlled-load loop, then go to step 4, otherwise then the spatial load forecasting operation in each controlled-load loop is terminated;
After flexible load controller receives load restoration instruction, a reclosing command is sent to the measure and control of load device in each controlled-load loop, and limit load number of times, limit load time and limit load amount are added up, namely measure and control of load device exports a switching signal after receiving reclosing command, make this unit tripping controller perform feed motion, make the controlled-load loop conducting at its place.

Claims (1)

1. the control method of a power flexible load control system, described power flexible load control system comprises the center of load control, and be arranged on the flexible load controller of power distribution station, connect the multiple subscriber's side powered loop of each power supply output branch end of power distribution station respectively;
In described subscriber's side powered loop, many loops are had to be controlled-load loop, a measure and control of load unit is equipped with in each controlled-load loop, described measure and control of load unit comprises one for controlling the tripping controller of loop, place break-make, and one for gathering the measure and control of load device of loop, place electric signal;
Described tripping controller is provided with one for controlling the electrical control end of its deciliter, and described measure and control of load device is provided with a control signal output, and its control signal output receives the control end of this unit tripping controller;
Described flexible load controller is built-in with an information on load acquisition module, and connects each measure and control of load device by correspondence, and its information on load acquisition module connects total power supply output of power distribution station;
Described flexible load controller with communication connected load control centre, or passes through a conventional load controller with communication connected load control centre;
The control method of described power flexible load control system, it is characterized in that, concrete steps are as follows:
For every bar controlled-load loop settings priority;
When needing to implement spatial load forecasting to power distribution station, the center of load control issues load control information and limit load instruction to flexible load controller, and described load control information comprises limit load amount, limit load actuation time;
Need to power distribution station discharge control time, the center of load control issues load restoration instruction to flexible load controller;
After flexible load controller receives load control information and limit load instruction, after calculating limit load according to the limit load amount in load control information, the limit load of power distribution station supplies electric output, implement spatial load forecasting operation to each controlled-load loop, the implementation step of concrete spatial load forecasting operation is as follows:
1) flexible load controller communicates with each measure and control of load device, by the load value in each each controlled-load loop of measure and control of load device Real-time Obtaining;
2) flexible load controller generates a limit load list according to the priority in the limit load amount in load control information, each controlled-load loop, the load value in each controlled-load loop;
Many controlled-load loops and load value thereof is included in described limit load list, and the priority in each controlled-load loop in limit load list is all lower than the priority in each controlled-load loop outside limit load list, each controlled-load loop according to priority sequential from low to high in limit load list, in limit load list, the load value sum in each controlled-load loop is more than or equal to the limit load amount in load control information;
3) first controlled-load loop got by flexible load controller from limit load list;
4) flexible load controller sends a trip command to the measure and control of load device in the controlled-load loop of getting from limit load list, namely measure and control of load device exports a trip signal after receiving trip command, make this unit tripping controller perform trip operation, make the controlled-load loop open circuit at its place;
5) flexible load controller gathers the current power supply output total load of power distribution station, and whether the current power supply output total load detecting power distribution station reaches the limit load of power distribution station for electric output;
If the current power supply of power distribution station exports total load be greater than the limit load of power distribution station for electric output, then forward step 6 to, otherwise then the spatial load forecasting operation in each controlled-load loop is terminated;
6) flexible load controller judges whether to arrive limit load list tail end;
If do not arrive limit load list tail end, then from limit load list, get next controlled-load loop, then go to step 4, otherwise then the spatial load forecasting operation in each controlled-load loop is terminated;
After flexible load controller receives load restoration instruction, a reclosing command is sent to the measure and control of load device in each controlled-load loop, and limit load number of times, limit load time and limit load amount are added up, namely measure and control of load device exports a switching signal after receiving reclosing command, make this unit tripping controller perform feed motion, make the controlled-load loop conducting at its place.
CN201110446475.XA 2011-12-28 2011-12-28 Power flexible load control system and control method thereof Active CN102437653B (en)

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CN105870931B (en) * 2016-06-17 2018-05-22 国网江苏省电力公司电力科学研究院 The control method of flexible load self-control system based on mains frequency
US11003146B2 (en) 2017-03-17 2021-05-11 General Electric Company Distributed optimal control of an aircraft propulsion system
US10461540B2 (en) 2017-03-17 2019-10-29 General Electric Technology Gmbh Scalable flexibility control of distributed loads in a power grid
CN107843764A (en) * 2017-09-19 2018-03-27 珠海格力电器股份有限公司 Power supply for electrical equipment control device and method
CN109412142A (en) * 2018-10-11 2019-03-01 南京南瑞继保电气有限公司 A kind of dynamic virtual partition method and its system for flexible load regulation
CN109687388B (en) * 2018-11-15 2020-01-21 华通机电股份有限公司 Automatic load-limiting protector
CN113363972A (en) * 2021-06-11 2021-09-07 Weri有限公司 Electric power system load side linkage response equivalent battery device and adjusting system
CN115982576B (en) * 2023-03-17 2023-06-20 石家庄科林电气股份有限公司 Malignant load identification method and device and electric energy meter
CN116014730B (en) * 2023-03-17 2023-11-24 国网山东省电力公司青州市供电公司 Flexible load regulation and control device, system and regulation and control method

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