CN111835036B - Auxiliary scheduling system and scheduling method for distributed energy - Google Patents
Auxiliary scheduling system and scheduling method for distributed energy Download PDFInfo
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- CN111835036B CN111835036B CN202010792826.1A CN202010792826A CN111835036B CN 111835036 B CN111835036 B CN 111835036B CN 202010792826 A CN202010792826 A CN 202010792826A CN 111835036 B CN111835036 B CN 111835036B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J13/00002—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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
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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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses an auxiliary dispatching system and a dispatching method of distributed energy sources, which respectively supervise the operation supply of each energy source generating unit and dispatch the power of each energy source generating unit according to load information and load demand jump information; the distributed energy output control end is used for carrying out normalization processing on energy production data and load consumption data of the energy generation unit and carrying out scheduling based on the data after the normalization processing, when a scheduling problem occurs in the normalization processing scheduling unit, judging load change according to the tangent slope of the load change curve, carrying out auxiliary preliminary energy scheduling according to the tangent slope value, calculating minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center while carrying out preliminary auxiliary scheduling, counting the maximum undervoltage operation time of the load, and carrying out energy scheduling on the load with the minimum safe output power in the time.
Description
Technical Field
The invention relates to the technical field of energy scheduling, in particular to an auxiliary scheduling system of distributed energy and a scheduling method thereof.
Background
With the advancement of science and technology, renewable energy utilization technology has been developed and has been developed on a certain scale around the world. Utilization techniques of biomass energy, solar energy, wind energy, hydroelectric power, geothermal energy, and the like have been applied. At present, the current energy development adopts a mode that a development system aiming at the energy is established aiming at the specific energy advantage of a certain area, for example, a hydroelectric power station is established on a large river, a photovoltaic power station is established in a place with sufficient sunshine, and the like. The energy is converted into electric energy by establishing a corresponding power station, corresponding production indexes are distributed according to power consumption requirements, and then the electric energy is used in a grid-connected mode.
However, the inventors found that the prior art has at least the following problems:
because the time interval of global optimization target issuing is long, when large load fluctuation occurs or intermittent energy output fluctuates, the area may not complete the exchange power target issued globally, and because the dispatching system needs to count the complex load information, when a special condition occurs, the power dispatching is not timely, and the good buffering time cannot be well given to the energy receiver, therefore, a method for safely and auxiliarily dispatching the energy is needed, which is a problem to be solved urgently in the field.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention discloses an auxiliary dispatching system of distributed energy, which comprises: the load end computing center monitors energy demand information of the load end, selects a preset time period, and constructs a load change curve according to load end change acquired in the time period; monitoring the change curve, not predicting the load change which may appear in the future, only comparing the current load with the load value at the previous moment, if the change exceeds a preset jump maximum value, recording the detailed load information at the moment, and sending the detailed load information at the moment to an energy scheduling control center; the energy scheduling control center obtains the load information of all load jumps in the preset time period and analyzes the load information to obtain the maximum energy demand; the distributed energy monitoring center is used for respectively monitoring the operation supply of each energy generation unit and scheduling the power of each energy generation unit according to the load information and the load demand jump information; distributed energy output control end, right energy production data and the load consumption data normalization processing of energy generation unit to data based on after the normalization processing are dispatched, when the dispatch problem appears in the normalization processing dispatch unit, according to load change curve's tangent slope judges the load change, and according to tangent slope value carries out supplementary preliminary energy dispatch, when carrying out preliminary auxiliary dispatch, according to energy dispatch control center analysis's the biggest energy demand calculates minimum safe output.
Still further, the energy generation unit includes a renewable energy power plant, a thermal power plant, a heating network, and a power supply and distribution system.
Furthermore, the scheduling problem comprises slow scheduling speed, power reduction of energy sources and abnormity of an energy scheduling system.
Further, the calculating the minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center further includes: according to the obtained detailed information of the load, the maximum undervoltage operation time of the load is counted, when the abnormality of the energy generation unit is detected, energy scheduling is carried out on the load with the minimum safe output power in the time, when the maximum undervoltage operation time arrives, energy supply interruption is carried out, meanwhile, the load change curve is marked, and the slope calculation of the change curve is not carried out at the current moment and the previous moment.
The invention also discloses an auxiliary scheduling method of the distributed energy, which comprises the following steps:
step 100, monitoring energy demand information of a load end, selecting a preset time period, and constructing a load change curve according to load end changes acquired in the time period; monitoring the change curve, not predicting load change which may occur in the future, only comparing the current load with the load value at the previous moment, if the change exceeds a preset jump maximum value, recording the detailed load information at the moment, sending the detailed load information at the moment to an energy scheduling control center to obtain the load information of all load jumps in the preset time period, and analyzing to obtain the maximum energy demand;
step 200, respectively monitoring the operation supply of each energy generation unit, and scheduling the power of each energy generation unit according to load information and load demand jump information;
step 300, normalizing the energy production data and the load consumption data of the energy generation unit, scheduling based on the data after normalization, judging load change according to the tangent slope of the load change curve when a scheduling problem occurs in the normalization processing scheduling unit, performing auxiliary preliminary energy scheduling according to the tangent slope value, and calculating minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center while performing preliminary auxiliary scheduling.
Still further, the energy generation unit includes a renewable energy power plant, a thermal power plant, a heating network, and a power supply and distribution system.
Furthermore, the scheduling problem comprises slow scheduling speed, power reduction of energy sources and abnormity of an energy scheduling system.
Further, the calculating the minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center further includes: according to the obtained detailed information of the load, the maximum undervoltage operation time of the load is counted, when the abnormality of the energy generation unit is detected, energy scheduling is carried out on the load with the minimum safe output power in the time, when the maximum undervoltage operation time arrives, energy supply interruption is carried out, meanwhile, the load change curve is marked, and the slope calculation of the change curve is not carried out at the current moment and the previous moment.
Drawings
Fig. 1 is a flowchart of an auxiliary scheduling method for distributed energy resources according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Fig. 1 shows an auxiliary scheduling method for distributed energy resources, which includes the following steps:
step 100, monitoring energy demand information of a load end, selecting a preset time period, and constructing a load change curve according to load end changes acquired in the time period; monitoring the change curve, not predicting load change which may occur in the future, only comparing the current load with the load value at the previous moment, if the change exceeds a preset jump maximum value, recording the detailed load information at the moment, sending the detailed load information at the moment to an energy scheduling control center to obtain the load information of all load jumps in the preset time period, and analyzing to obtain the maximum energy demand;
step 200, respectively monitoring the operation supply of each energy generation unit, and scheduling the power of each energy generation unit according to load information and load demand jump information;
step 300, normalizing the energy production data and the load consumption data of the energy generation unit, scheduling based on the data after normalization, judging load change according to the tangent slope of the load change curve when a scheduling problem occurs in the normalization processing scheduling unit, performing auxiliary preliminary energy scheduling according to the tangent slope value, and calculating minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center while performing preliminary auxiliary scheduling.
Still further, the energy generation unit includes a renewable energy power plant, a thermal power plant, a heating network, and a power supply and distribution system.
Furthermore, the scheduling problem comprises slow scheduling speed, power reduction of energy sources and abnormity of an energy scheduling system.
Further, the calculating the minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center further includes: according to the obtained detailed information of the load, the maximum undervoltage operation time of the load is counted, when the abnormality of the energy generation unit is detected, energy scheduling is carried out on the load with the minimum safe output power in the time, when the maximum undervoltage operation time arrives, energy supply interruption is carried out, meanwhile, the load change curve is marked, and the slope calculation of the change curve is not carried out at the current moment and the previous moment.
Example two
The present embodiment describes the concept of the present invention from a hardware perspective, and to this end, discloses an auxiliary scheduling system for distributed energy, including: the load end computing center monitors energy demand information of the load end, selects a preset time period, and constructs a load change curve according to load end change acquired in the time period; monitoring the change curve, not predicting the load change which may appear in the future, only comparing the current load with the load value at the previous moment, if the change exceeds a preset jump maximum value, recording the detailed load information at the moment, and sending the detailed load information at the moment to an energy scheduling control center; the energy scheduling control center obtains the load information of all load jumps in the preset time period and analyzes the load information to obtain the maximum energy demand; the distributed energy monitoring center is used for respectively monitoring the operation supply of each energy generation unit and scheduling the power of each energy generation unit according to the load information and the load demand jump information; distributed energy output control end, right energy production data and the load consumption data normalization processing of energy generation unit to data based on after the normalization processing are dispatched, when the dispatch problem appears in the normalization processing dispatch unit, according to load change curve's tangent slope judges the load change, and according to tangent slope value carries out supplementary preliminary energy dispatch, when carrying out preliminary auxiliary dispatch, according to energy dispatch control center analysis's the biggest energy demand calculates minimum safe output.
Still further, the energy generation unit includes a renewable energy power plant, a thermal power plant, a heating network, and a power supply and distribution system.
Furthermore, the scheduling problem comprises slow scheduling speed, power reduction of energy sources and abnormity of an energy scheduling system.
Further, the calculating the minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center further includes: according to the obtained detailed information of the load, the maximum undervoltage operation time of the load is counted, when the abnormality of the energy generation unit is detected, energy scheduling is carried out on the load with the minimum safe output power in the time, when the maximum undervoltage operation time arrives, energy supply interruption is carried out, meanwhile, the load change curve is marked, and the slope calculation of the change curve is not carried out at the current moment and the previous moment.
An auxiliary dispatching system for distributed energy resources comprises: the load end computing center monitors energy demand information of the load end, selects a preset time period, and constructs a load change curve according to load end change acquired in the time period; monitoring the change curve, not predicting the load change which may appear in the future, only comparing the current load with the load value at the previous moment, if the change exceeds a preset jump maximum value, recording the detailed load information at the moment, and sending the detailed load information at the moment to an energy scheduling control center; the energy scheduling control center obtains the load information of all load jumps in the preset time period and analyzes the load information to obtain the maximum energy demand; the distributed energy monitoring center is used for respectively monitoring the operation supply of each energy generation unit and scheduling the power of each energy generation unit according to the load information and the load demand jump information; distributed energy output control end, right energy production data and the load consumption data normalization processing of energy generation unit to data based on after the normalization processing are dispatched, when the dispatch problem appears in the normalization processing dispatch unit, according to load change curve's tangent slope judges the load change, and according to tangent slope value carries out supplementary preliminary energy dispatch, when carrying out preliminary auxiliary dispatch, according to energy dispatch control center analysis's the biggest energy demand calculates minimum safe output.
Still further, the energy generation unit includes a renewable energy power plant, a thermal power plant, a heating network, and a power supply and distribution system.
Furthermore, the scheduling problem comprises slow scheduling speed, power reduction of energy sources and abnormity of an energy scheduling system.
Further, the calculating the minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center further includes: according to the obtained detailed information of the load, the maximum undervoltage operation time of the load is counted, when the abnormality of the energy generation unit is detected, energy scheduling is carried out on the load with the minimum safe output power in the time, when the maximum undervoltage operation time arrives, energy supply interruption is carried out, meanwhile, the load change curve is marked, and the slope calculation of the change curve is not carried out at the current moment and the previous moment.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Claims (6)
1. The auxiliary dispatching system of the distributed energy is characterized by comprising: the load end computing center monitors energy demand information of the load end, selects a preset time period, and constructs a load change curve according to load end change acquired in the time period; monitoring the change curve, not predicting the load change which may appear in the future, only comparing the current load with the load value at the previous moment, if the change exceeds a preset jump maximum value, recording the detailed load information at the moment, and sending the detailed load information at the moment to an energy scheduling control center; the energy scheduling control center obtains the load information of all load jumps in the preset time period and analyzes the load information to obtain the maximum energy demand; the distributed energy monitoring center is used for respectively monitoring the operation supply of each energy generation unit and scheduling the power of each energy generation unit according to the load information and the load demand jump information; the distributed energy output control end normalizes the energy production data and the load consumption data of the energy generation unit, schedules the data based on the normalized data, judges load change according to the tangent slope of the load change curve when the normalized processing scheduling unit has a scheduling problem, performs auxiliary preliminary energy scheduling according to the tangent slope value, calculates minimum safe output power according to the maximum energy requirement analyzed by the energy scheduling control center while performing preliminary auxiliary scheduling, counts the maximum undervoltage operation time of the load according to the obtained detailed load information, performs energy scheduling on the load with the minimum safe output power in the time when detecting that the energy generation unit is abnormal, performs energy supply interruption and marks the load change curve when the maximum undervoltage operation time reaches, the slope of the change curve is not calculated at the current time and the previous time.
2. The auxiliary dispatching system of claim 1, wherein the energy generation unit comprises a renewable energy power plant, a thermal power plant, a heating network, and a power supply and distribution system.
3. The auxiliary scheduling system of claim 1 wherein the scheduling problem includes slow scheduling speed, power down of energy source, and energy scheduling system anomaly.
4. An auxiliary scheduling method for distributed energy sources, applied to the system according to any one of claims 1 to 3, characterized in that:
step 100, monitoring energy demand information of a load end, selecting a preset time period, and constructing a load change curve according to load end changes acquired in the time period; monitoring the change curve, not predicting load change which may occur in the future, only comparing the current load with the load value at the previous moment, if the change exceeds a preset jump maximum value, recording the detailed load information at the moment, sending the detailed load information at the moment to an energy scheduling control center to obtain the load information of all load jumps in the preset time period, and analyzing to obtain the maximum energy demand;
step 200, respectively monitoring the operation supply of each energy generation unit, and scheduling the power of each energy generation unit according to load information and load demand jump information;
step 300, normalizing the energy production data and the load consumption data of the energy generation unit, scheduling based on the normalized data, judging load change according to the tangent slope of the load change curve when a scheduling problem occurs in the normalized scheduling unit, performing auxiliary preliminary energy scheduling according to the tangent slope value, calculating minimum safe output power according to the maximum energy demand analyzed by the energy scheduling control center while performing preliminary auxiliary scheduling, counting the maximum under-voltage operation time of the load according to the obtained detailed information of the load, performing energy scheduling on the load with the minimum safe output power within the time when detecting that the energy generation unit is abnormal, and performing energy supply interruption and labeling on the load change curve when the maximum under-voltage operation time reaches, the slope of the change curve is not calculated at the current time and the previous time.
5. The auxiliary scheduling method of claim 4 wherein the energy generation unit comprises a renewable energy power plant, a thermal power plant, a heating network, and a power supply and distribution system.
6. The auxiliary scheduling method according to claim 4, wherein the scheduling problem includes slow scheduling speed, power drop of energy source, and abnormality of energy source scheduling system.
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