CN114498936A - Distributed power supply regulation and control system, method and device - Google Patents
Distributed power supply regulation and control system, method and device Download PDFInfo
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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
- 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
- H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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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
- H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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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
- 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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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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
- H02J2213/00—Indexing scheme relating to details of circuit arrangements for providing remote indication of network conditions of for circuit arrangements for providing remote control of switching means in a power distribution network
- H02J2213/10—Indexing scheme relating to details of circuit arrangements for providing remote indication of network conditions of for circuit arrangements for providing remote control of switching means in a power distribution network using simultaneously two or more different transmission means
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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
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic 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
- 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
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
- H02J2300/26—The renewable source being solar energy of photovoltaic origin involving maximum power point tracking control for photovoltaic sources
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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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
- Y04S10/16—Electric power substations
Abstract
The invention discloses a distributed power supply regulation and control system, a method and a device, which comprise the following steps: the system comprises a dispatching master station, a distributed power supply with access of 10kV and above voltage class, a distributed power supply with access of 380V voltage class and a distributed power supply with access of a transformer substation; the distributed power supply with the voltage class of 10kV or above is in communication connection with the dispatching master station through a power control device; the 380V voltage class accessed distributed power supply is in communication connection with the dispatching master station through the transformer area information collecting device and the area information collecting device in sequence; and the distributed power supply accessed by the transformer substation is in communication connection with the dispatching master station through the multifunctional measurement and control device and the data communication gateway machine in sequence. The invention can monitor and control the distributed power supply in real time, improve the consumption capability of the distributed power supply and ensure the safe and economic operation of a power grid.
Description
Technical Field
The invention relates to the technical field of operation control of distributed power supplies of a power system, in particular to a system, a method and a device for regulating and controlling a distributed power supply.
Background
Clean low-carbon development is the subject of energy development in the world at present, and development and application of distributed photovoltaic and other clean energy are effective means for solving the structural defect of oil-deficient and gas-deficient energy in China. The scale of distributed photovoltaic will be rapidly increased, and the distributed photovoltaic grid connection and local consumption pressure is increasing day by day, so that the consumption capability of distributed power supplies such as distributed photovoltaic is improved, and the enhancement of the regulation and control capability of a power grid on the distributed power supplies is an important measure for ensuring the safe and stable operation of the power grid under the photovoltaic background of the whole county (city and district).
At present, in the face of small-amount large-scale distributed photovoltaic power grid connection, the grid connection problem is solved by technologies such as a micro-grid, a virtual power plant and cluster control; however, for the grid connection of a large number of distributed small-capacity distributed power supplies, a better control means does not exist at present, particularly for the 380V voltage level grid-connected distributed power supplies and transformer substations to which the distributed power supplies are connected, a power grid dispatching system is lack of a monitoring and dispatching means at present, and a 10kV voltage level grid-connected distributed photovoltaic power supply is also lack of a control capability at present; therefore, a complete communication channel from the distributed power source to the power grid dispatching system needs to be established, real-time monitoring and control are performed on the distributed photovoltaic power source, and safe and stable operation of the power grid after a large number of distributed power sources are connected to the power distribution network is guaranteed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a distributed power supply regulation and control system, a method and a device, and solves the technical problems that when a large number of distributed photovoltaic power supplies are connected into a power grid, the local consumption of the distributed photovoltaic power supplies faces higher pressure due to the intermittency, fluctuation and randomness of the output of the distributed photovoltaic power supplies, the safe and stable operation of the power grid is threatened, and the like.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
in one aspect, the present invention provides a distributed power supply regulation system, including: the system comprises a dispatching master station, a distributed power supply with access of 10kV and above voltage class, a distributed power supply with access of 380V voltage class and a distributed power supply with access of a transformer substation;
the distributed power supply with the voltage class of 10kV or above is in communication connection with the dispatching master station through a power control device;
the 380V voltage class accessed distributed power supply is in communication connection with the dispatching master station through the transformer area information collecting device and the area information collecting device in sequence;
and the distributed power supply accessed by the transformer substation is in communication connection with the dispatching master station through the multifunctional measurement and control device and the data communication gateway machine in sequence.
Further, the distributed power supply connected with the voltage class of 10kV or more comprises one or more of a first photovoltaic power generation device, a first energy storage appliance and a first charging pile.
Further, the distributed power source connected at the 380V voltage level comprises one or more of a second photovoltaic power generation device, a second energy storage appliance and a second charging pile.
Further, the distributed power supply accessed by the substation comprises one or more of a substation photovoltaic power generation device and a substation energy storage device.
Further, the power control device is in communication connection with the scheduling master station through a scheduling data network or a wireless private network.
Further, the distributed power supply accessed by the 380V voltage level is in communication connection with the distribution area information gathering device through a broadband power carrier; the distribution room information gathering device is in communication connection with the area information gathering device through a wireless private network; the regional information gathering device is in communication connection with the dispatching master station through a forward and reverse isolation device by adopting an optical fiber private network.
Furthermore, the data communication gateway machine is connected with the scheduling master station through a scheduling data network.
On the other hand, the invention provides a distributed power supply regulation and control method, which is executed by a scheduling master station, wherein the distributed power supply comprises a distributed power supply with an access voltage level of 10kV or more, a distributed power supply with an access voltage level of 380V and a distributed power supply with an access transformer substation, and the method comprises the following steps:
acquiring operation data of a grid-connected distributed power supply, and calculating a power adjustment value by combining the operation data of the current power grid;
according to the power adjustment value, considering the current maximum power adjustment capability of each distributed power supply, and issuing power regulation and control instructions for each distributed power supply step by step from high to low according to the priority level until the residual power adjustment value is zero or each distributed power supply reaches the maximum power adjustment capability;
the priority of each distributed power supply is distributed power supplies accessed by a transformer substation, distributed power supplies accessed by 10kV or above voltage levels and distributed power supplies accessed by 380V voltage levels in sequence from high to low.
Further, the method for issuing the power regulation and control instruction for each distributed power supply step by step according to the sequence of the priority from high to low until the residual power regulation value is zero or each distributed power supply reaches the maximum power regulation and control capability comprises the following steps:
judging whether the power adjustment value delta P is less than or equal to the maximum adjustable power delta P of the distributed power supply accessed by the transformer substationa；
If the judgment result is yes, sending a regulating instruction with a power regulation value delta P to a distributed power supply accessed by the transformer substation;
if the judgment result is no, the issued power adjustment value is delta PaThe regulating instruction is sent to the distributed power supply accessed by the transformer substation, and the residual power regulating value (delta P-delta P) is further judgeda) Maximum adjustable power delta P of distributed power supply connected with voltage class of 10kV or moreb；
If the result of the further judgment is yes, the issued power adjustment value is (delta P-delta P)a) Adjusting the instruction to a distributed power supply connected with a voltage level of 10kV or above;
if the result of the further judgment is negative, the issued power adjustment value is delta PbRegulating the command to a distributed power supply with the voltage level of 10kV or more, and judging the final residual power regulating value (delta P-delta P) againa-△Pb) Maximum adjustable power delta P of distributed power supply connected with voltage class of being smaller than or equal to 380Vc；
If the result of the second judgment is yes, the issued power adjustment value is (delta P-delta P)a-△Pb) The regulating instruction is to a 380V voltage level connected distributed power supply;
if the result of the secondary judgment is negative, the issued power adjustment value is delta PcTo a 380V voltage class switched-in distributed power supply.
Further, the power adjustment value Δ P is expressed by the formula Δ P ═ Δ P1+△P2+△P3+△P4And calculating to obtain, wherein:
△P1for the first power adjustment, Δ P1Obtaining the frequency value of the current power grid by combining a preset frequency modulation curve;
△P2for the second power adjustment, Δ P2Acquiring actual power of a grid-connected distributed power supply by combining a pre-established photovoltaic plan tracking curve;
△P3for the third power adjustment, Δ P3Acquiring actual power of the grid-connected distributed power supply through an externally input power control instruction;
△P4for the fourth power adjustment, Δ P4The method is obtained by combining the actual power of the grid-connected distributed power supply and calculating according to the section power limitation, and the calculation formula is as follows:
ΔP4＝Psec,t-Plmt·(1-δmarg)
wherein: plmtFor stable limitation of the cross-section, deltamargTo reserve section stability margin, deltamargThe value range of (A) is 5% -10%; psec,tThe actual current of the section at time t.
In another aspect, the present invention further provides a distributed power supply control apparatus, including:
the calculation module is used for acquiring operation data of a grid-connected distributed power supply, and calculating a power adjustment value by combining the operation data of the current power grid, wherein the distributed power supply comprises a distributed power supply with a voltage level of 10kV or more, a distributed power supply with a voltage level of 380V and a distributed power supply with a transformer substation;
the regulating module is used for giving power regulating instructions to the distributed power supplies step by step according to the priority from high to low in consideration of the current maximum power regulating capability of each distributed power supply according to the power regulating value until the residual power regulating value is zero or each distributed power supply reaches the maximum power regulating capability;
the priority of each distributed power supply is distributed power supplies accessed by a transformer substation, distributed power supplies accessed by 10kV or above voltage levels and distributed power supplies accessed by 380V voltage levels in sequence from high to low.
Further, the regulatory module comprises:
a first judging module for judging whether the power adjustment value delta P is less than or equal to the maximum adjustable power delta P of the distributed power supply accessed by the transformer substationa；
The first instruction module is used for issuing a regulating instruction with a power regulation value of delta P to a distributed power supply accessed by the transformer substation if the judgment result of the first judgment module is positive;
a second judging module, configured to send a power adjustment value Δ P if the judgment result of the first judging module is negativeaThe regulating instruction is sent to the distributed power supply accessed by the transformer substation, and the residual power regulating value (delta P-delta P) is further judgeda) Maximum adjustable power delta P of distributed power supply connected with voltage class of 10kV or moreb；
A second instruction module, configured to, if the result of the determination by the second determination module is yes, issue a power adjustment value of (Δ P- Δ P)a) Adjusting the instruction to a distributed power supply connected with a voltage level of 10kV or above;
third stepA judging module, configured to send a power adjustment value of Δ P if the result of the judgment by the second judging module is negativebRegulating the command to a distributed power supply with the voltage level of 10kV or more, and judging the final residual power regulating value (delta P-delta P) againa-△Pb) Maximum adjustable power delta P of distributed power supply connected with voltage class of being smaller than or equal to 380Vc；
A third instruction module, configured to issue a power adjustment value of (Δ P- Δ P) if the result determined by the third determination module is yesa-△Pb) The regulating instruction is to a 380V voltage level connected distributed power supply;
a fourth instruction module, configured to issue a power adjustment value of Δ P if the result determined by the third determination module is negativecTo a 380V voltage class switched-in distributed power supply.
Further, the calculation module comprises:
a calculating subunit for calculating the value of1+△P2+△P3+△P4Calculating to obtain a power adjustment value delta P; wherein, the calculation subunit includes:
a first obtaining subunit, configured to obtain a first power adjustment quantity Δ P by combining a preset frequency modulation curve with a current grid frequency value1；
A second obtaining subunit, configured to obtain a second power adjustment quantity Δ P by using a pre-established photovoltaic plan tracking curve and combining with the actual power of the grid-connected distributed power supply2；
A third obtaining subunit, configured to obtain a third power adjustment quantity Δ P by combining an externally input power control instruction with the actual power of the grid-connected distributed power supply3；
A fourth obtaining subunit, configured to obtain a fourth power adjustment quantity Δ P by calculating according to the section power limit by combining actual power of the grid-connected distributed power supply4The calculation formula is as follows:
ΔP4＝Psec,t-Plmt·(1-δmarg)
wherein: plmtFor stable limitation of the cross-section, deltamargTo reserve section stability margin, deltamargThe value range of (A) is 5% -10%; psec,tIs the actual power flow of the section at the time t
Compared with the prior art, the invention has the following beneficial effects:
the invention establishes a complete communication channel from the distributed power supplies to the power grid dispatching system, and the dispatching master station issues power regulation and control instructions for each distributed power supply step by step according to the sequence from high to low of the priority, so that the local consumption of the distributed power supplies and the safe and economic operation of the power grid are realized; the scheduling master station can realize real-time monitoring and control of the distributed power supplies, and ensures safe and stable operation of a power grid after a large number of distributed power supplies are connected to the power distribution network.
Drawings
Fig. 1 is a schematic structural diagram of a distributed power supply regulation and control system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a distributed power access scheduling master station with access to voltage classes of 10kV and above according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a 380V voltage class-accessed distributed power access scheduling master station according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a distributed power access scheduling master station for substation access according to an embodiment of the present invention.
Fig. 5 is a flowchart of a method for issuing a power regulation instruction for each distributed power source in the distributed power source regulation method according to the embodiment of the present invention.
Detailed Description
The technical solutions of the present invention are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present invention are described in detail in the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
The first embodiment is as follows:
an embodiment of the present invention provides a distributed power supply regulation and control system, as shown in fig. 1, including: the system comprises a dispatching master station, a distributed power supply with access of 10kV and above voltage class, a distributed power supply with access of 380V voltage class and a distributed power supply with access of a transformer substation; the distributed power supply with 10kV or above voltage level access is in communication connection with the scheduling master station through the power control device; the distributed power supply with 380V voltage class access is in communication connection with the dispatching master station through the transformer area information collecting device and the area information collecting device in sequence; and a distributed power supply accessed by the transformer substation is in communication connection with the dispatching master station through the multifunctional measurement and control device and the data communication gateway machine in sequence.
In the embodiment of the invention, as shown in fig. 2, the distributed power supply with 10kV or higher voltage class access includes one or more of a first photovoltaic power generation device, a first energy storage apparatus, and a first charging pile; the power control device is used for carrying out power control on the distributed power supply with the voltage class of 10kV or more accessed according to a control instruction issued by the scheduling master station; and transmitting the operation data of the distributed power supply with the voltage class of 10kV or above to a scheduling master station through a scheduling data network or a wireless private network. Specifically, the regulation and control instruction issued by the scheduling master station includes: a power command value and a reactive power command value; the data information of the distributed power supply which is issued by the power control device and is accessed to the voltage class of 10kV or above comprises the following steps: the active power instruction value of each power supply and the reactive power instruction value of each power supply; the power control device collects data information of the distributed power supply accessed by the voltage class of 10kV or more, and the data information comprises the following steps: the operation state of each power supply, the active power of each power supply, the reactive power of each power supply, the adjustable range of the active power of each power supply and the adjustable range of the reactive power of each power supply; the data information sent to the scheduling master station by the power control device comprises: the power supply comprises a grid-connected point switching state, a grid-connected point voltage and current, a grid-connected point frequency, and total active power, total reactive power, a total active power adjustable range and a total reactive power adjustable range which are transmitted by each power supply.
In the embodiment of the invention, for a 380V voltage-class accessed distributed power supply, considering that the data volume is huge, in order to reduce the pressure of a distributed power supply regulation and control system, collect the data information of the distributed power supply to the maximum extent, reduce the transmission amount of data information and simplify the function of a master dispatching station, a 'centralized and layered' framework is adopted to regulate and control the 380V voltage-class accessed distributed power supply; as shown in fig. 3, the power supply layer is divided into four levels, namely a scheduling layer, a regional agent layer, a distribution area agent layer and a power supply layer, wherein the power supply layer is a 380V voltage level-connected distributed power supply and comprises one or more of a second photovoltaic power generation device, a second energy storage appliance and a second charging pile; the transformer area agent layer comprises a transformer area information collecting device which is an agent server for regulating and controlling the distributed power supply in the transformer area range; the regional agent layer comprises a regional information gathering device which is an agent service for regulating and controlling the station region information gathering device in the regional range; the scheduling layer contains a scheduling master station.
Specifically, a 380V voltage level accessed distributed power supply is in communication connection with a distribution area information collecting device through a broadband power carrier; the transformer area information collection device is used for integrating and processing the operation data of the distributed power supply with 380V voltage class access and then transmitting the operation data to the area information collection device through a wireless private network; the regional information collection device is used for integrating and processing the operation data transmitted by the station region information collection device and then transmitting the operation data to the dispatching master station through the forward and reverse isolation device by adopting an optical fiber private network. The data information which is transmitted to the platform area agent layer from the distributed power supply with 380V voltage class access comprises the following steps: the operation state of each power supply, the active power of each power supply, the reactive power of each power supply, the adjustable range of the active power of each power supply and the adjustable range of the reactive power of each power supply; the data information sent to the regional agent layer on the platform agent layer comprises: the total active power of the transformer area, the total reactive power of the transformer area, the adjustable range of the active power of the transformer area and the adjustable range of the reactive power of the transformer area; the data information sent to the scheduling layer by the regional proxy layer includes: the system comprises a region total active power, a region total reactive power, a region active power adjustable range and a region reactive power adjustable range.
Furthermore, the region information collecting device is also used for receiving and decomposing the regulation and control instruction from the dispatching master station and then sending the regulation and control instruction to the region information collecting device of the region where the region information collecting device is located; the distribution area information gathering device is also used for receiving and decomposing the regulating and controlling instruction sent by the area information gathering device and then sending the regulating and controlling instruction to the 380V voltage level-accessed distributed power supply of the distribution area where the distribution area is located. The data information which is issued by the scheduling layer to the regional agent layer comprises: the regional active power instruction value and the regional reactive power instruction value; the data information sent by the regional agent layer to the platform region agent layer includes: the station area active power instruction value and the station area reactive power instruction value; the information issued by the platform area agent layer to the power layer comprises: the active power instruction value of each power supply and the reactive power instruction value of each power supply.
In the embodiment of the invention, as shown in fig. 4, the distributed power source accessed by the substation includes one or more of a substation photovoltaic power generation device and a substation energy storage device; the multifunctional measurement and control device receives a regulation and control instruction from a dispatching master station through a data communication gateway machine, decomposes and processes the regulation and control instruction of the dispatching master station, and then sends the decomposed and processed regulation and control instruction to a distributed power supply accessed by a transformer substation, collects operation data of the distributed power supply accessed by the transformer substation, integrates and processes the operation data of the distributed power supply accessed by the transformer substation, and then transmits the integrated operation data to the dispatching master station through the data communication gateway machine; and the data communication gateway is connected with the scheduling master station through the scheduling data network. Specifically, the data information sent to the multifunctional measurement and control device on the distributed power supply accessed by the transformer substation includes: the operation state of each power supply, the active power of each power supply, the reactive power of each power supply, the adjustable range of the active power of each power supply and the adjustable range of the reactive power of each power supply; the data information of the distributed power supply which is issued by the multifunctional measurement and control device and is accessed to the transformer substation comprises the following steps: the active power instruction value of each power supply and the reactive power instruction value of each power supply; the data information uploaded to the data communication gateway machine by the multifunctional measurement and control device comprises the following steps: the total-station distributed power supply comprises total active power, total reactive power, a total active power adjustable range and a total reactive power adjustable range; the information sent by the scheduling master station to the data communication gateway machine comprises: a total station active power instruction value and a total station reactive power instruction value; the data communication gateway machine directly transmits the data information uploaded by the multifunctional measurement and control device to the dispatching master station, and directly transmits the data information issued by the dispatching master station to the multifunctional measurement and control device.
According to the distributed power supply regulation and control system provided by the embodiment of the invention, different types of distributed power supplies are brought into a unified regulation and control system, a complete communication channel from the distributed power supplies to the dispatching master station is established by considering the difference of the distributed power supplies accessing into the power grid regulation and control system under different voltage grades and different environments, and in the framework, communication schemes of the different types of distributed photovoltaic access dispatching systems are designed, so that the distributed power supply ground consumption and the safe and economic operation of the power grid are realized.
Example two:
the embodiment of the invention provides a distributed power supply regulation and control method, which can be executed by a scheduling master station as shown in fig. 1 based on the previous embodiment; according to different characteristics of different distributed power supplies accessed to a scheduling master station, unified collection and unified modeling are performed, the scheduling master station prioritizes the different distributed power supplies, and the priority centralized regulation and control are performed; the distributed power supplies comprise distributed power supplies with the voltage class of 10kV or above, distributed power supplies with the voltage class of 380V and distributed power supplies with the voltage class of a transformer substation; the method comprises the following steps:
the method comprises the following steps: acquiring operation data of a grid-connected distributed power supply, and calculating a power adjustment value by combining the operation data of the current power grid;
step two: according to the power adjustment value, considering the current maximum power adjustment capability of each distributed power supply, and issuing power regulation and control instructions for each distributed power supply step by step from high to low according to the priority level until the residual power adjustment value is zero or each distributed power supply reaches the maximum power adjustment capability;
the priority of each distributed power supply is distributed power supplies accessed by a transformer substation, distributed power supplies accessed by 10kV or above voltage levels and distributed power supplies accessed by 380V voltage levels in sequence from high to low.
As an embodiment of the present invention, as shown in fig. 5, a specific method for issuing a power regulation instruction for each distributed power source step by step according to a sequence from high to low in the priority until a remaining power adjustment value is zero or each distributed power source reaches a maximum power regulation capability includes:
judging whether the power adjustment value delta P is smaller than or equal to the maximum adjustable power delta P of the distributed power supply accessed by the transformer substationa；
If the judgment result is yes, sending a regulating instruction with a power regulation value delta P to a distributed power supply accessed by the transformer substation;
if the judgment result is no, the issued power adjustment value is delta PaThe regulating instruction is sent to the distributed power supply accessed by the transformer substation, and the residual power regulating value (delta P-delta P) is further judgeda) Maximum adjustable power delta P of distributed power supply connected with voltage class of 10kV or moreb；
If the result of the further judgment is yes, the issued power adjustment value is (delta P-delta P)a) Adjusting the instruction to a distributed power supply connected with a voltage level of 10kV or above;
if the result of the further judgment is negative, the issued power adjustment value is delta PbRegulating the command to a distributed power supply with the voltage level of 10kV or more, and judging the final residual power regulating value (delta P-delta P) againa-△Pb) Maximum adjustable power delta P of distributed power supply connected with voltage class of being smaller than or equal to 380Vc；
If the result of the second judgment is yes, the issued power adjustment value is (delta P-delta P)a-△Pb) The regulating instruction is to a 380V voltage level connected distributed power supply;
if the result of the secondary judgment is negative, the issued power adjustment value is delta PcTo a 380V voltage class switched-in distributed power supply.
In one embodiment of the present invention, the power adjustment value Δ P is represented by the formula Δ P ═ Δ P1+△P2+△P3+△ P4And calculating to obtain, wherein:
△P1for the first power adjustment, Δ P1Obtaining the frequency value of the current power grid by combining a preset frequency modulation curve;
△P2for the second power regulationSaving of energy, delta P2Acquiring actual power of a grid-connected distributed power supply by combining a pre-established photovoltaic plan tracking curve;
△P3for the third power adjustment, Δ P3Acquiring actual power of the grid-connected distributed power supply through an externally input power control instruction;
△P4for the fourth power adjustment, Δ P4The method is obtained by combining the actual power of the grid-connected distributed power supply and calculating according to the section power limitation, and the calculation formula is as follows:
ΔP4＝Psec,t-Plmt·(1-δmarg)
wherein: plmtFor stable limitation of the cross-section, deltamargTo reserve section stability margin, deltamargThe value range of (A) is 5% -10%; psec,tThe actual current of the section at time t.
According to the distributed power supply regulation and control method provided by the embodiment of the invention, different distributed power supplies are prioritized and are subjected to priority centralized regulation and control, the power regulation instruction of the scheduling master station can be issued to each distributed power supply in a multilayer distribution mode, the flexible regulation and control of the distributed power supplies under the background of a large number of photovoltaic power supplies are realized, and the safe and stable operation of a power grid is ensured.
Example three:
the embodiment of the invention provides a distributed power supply regulation and control device, which can be used for realizing the method in the second embodiment, and specifically comprises the following steps:
the calculation module is used for acquiring operation data of a grid-connected distributed power supply, and calculating a power adjustment value by combining the operation data of the current power grid, wherein the distributed power supply comprises a distributed power supply with a voltage level of 10kV or more, a distributed power supply with a voltage level of 380V and a distributed power supply with a transformer substation;
the regulating module is used for giving power regulating instructions to the distributed power supplies step by step according to the priority from high to low in consideration of the current maximum power regulating capability of each distributed power supply according to the power regulating value until the residual power regulating value is zero or each distributed power supply reaches the maximum power regulating capability;
the priority of each distributed power supply is distributed power supplies accessed by a transformer substation, distributed power supplies accessed by 10kV or above voltage levels and distributed power supplies accessed by 380V voltage levels in sequence from high to low.
As an embodiment of the present invention, the regulatory module includes:
a first judging module for judging whether the power adjustment value delta P is less than or equal to the maximum adjustable power delta P of the distributed power supply accessed by the transformer substationa；
The first instruction module is used for issuing a regulating instruction with a power regulation value of delta P to a distributed power supply accessed by the transformer substation if the judgment result of the first judgment module is positive;
a second judging module, configured to determine that the issued power adjustment value is Δ P if the judgment result of the first judging module is negativeaThe regulating instruction is sent to the distributed power supply accessed by the transformer substation, and the residual power regulating value (delta P-delta P) is further judgeda) Maximum adjustable power delta P of distributed power supply connected with voltage class of 10kV or moreb；
A second instruction module, configured to, if the result of the determination by the second determination module is yes, issue a power adjustment value of (Δ P- Δ P)a) Adjusting the instruction to a distributed power supply connected with a voltage level of 10kV or above;
a third judging module, configured to, if the result of the judgment by the second judging module is negative, issue a power adjustment value of Δ PbRegulating the command to a distributed power supply with the voltage level of 10kV or more, and judging the final residual power regulating value (delta P-delta P) againa-△Pb) Maximum adjustable power delta P of distributed power supply connected with voltage class of being smaller than or equal to 380Vc；
A third instruction module, configured to issue a power adjustment value of (Δ P- Δ P) if the result determined by the third determination module is yesa-△Pb) The regulating instruction is to a 380V voltage level connected distributed power supply;
a fourth instruction module, configured to issue a power adjustment value of Δ P if the result determined by the third determination module is negativecTo a 380V voltage class switched-in distributed power supply.
As an embodiment of the present invention, wherein the calculation module includes:
a calculating subunit for calculating the value of1+△P2+△P3+△P4Calculating to obtain a power adjustment value delta P; wherein, the calculation subunit includes:
a first obtaining subunit, configured to obtain a first power adjustment quantity Δ P by combining a preset frequency modulation curve with a current grid frequency value1；
A second obtaining subunit, configured to obtain a second power adjustment quantity Δ P by using a pre-established photovoltaic plan tracking curve and combining with the actual power of the grid-connected distributed power supply2；
A third obtaining subunit, configured to obtain a third power adjustment quantity Δ P by combining an externally input power control instruction with the actual power of the grid-connected distributed power supply3；
A fourth obtaining subunit, configured to obtain a fourth power adjustment quantity Δ P by calculating according to the section power limit by combining actual power of the grid-connected distributed power supply4The calculation formula is as follows:
ΔP4＝Psec,t-Plmt·(1-δmarg)
wherein: plmtFor stable limitation of the cross-section, deltamargTo reserve section stability margin, deltamargThe value range of (A) is 5% -10%; psec,tThe actual current of the section at time t.
The distributed power supply regulation and control device provided by the embodiment of the invention can monitor and control the distributed power supplies in real time, and issue power regulation and control instructions for each distributed power supply step by step according to the sequence from high to low in the priority, so that the safe and stable operation of a power grid after a large number of distributed power supplies are connected to a power distribution network is ensured.
Those skilled in the art will appreciate that 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.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.
Claims (13)
1. A distributed power supply regulation and control system is characterized by comprising: the system comprises a dispatching master station, a distributed power supply with access of 10kV and above voltage class, a distributed power supply with access of 380V voltage class and a distributed power supply with access of a transformer substation;
the distributed power supply with the voltage class of 10kV or above is in communication connection with the dispatching master station through a power control device;
the 380V voltage class accessed distributed power supply is in communication connection with the dispatching master station through the transformer area information collecting device and the area information collecting device in sequence;
and the distributed power supply accessed by the transformer substation is in communication connection with the dispatching master station through the multifunctional measurement and control device and the data communication gateway machine in sequence.
2. The distributed power supply regulation and control system of claim 1, wherein the 10kV and higher voltage class-connected distributed power supply comprises one or more of a first photovoltaic power generation device, a first energy storage appliance, and a first charging pile.
3. The distributed power control system according to claim 1, wherein the 380V voltage class-accessed distributed power supply comprises one or more of a second photovoltaic power generation device, a second energy storage device and a second charging pile.
4. The distributed power regulation system of claim 1, wherein the substation-accessed distributed power source comprises one or more of a substation photovoltaic power generation device, a substation energy storage appliance.
5. The distributed power control system of claim 1, wherein the power control device is communicatively coupled to the scheduling master station via a scheduling data network or a wireless private network.
6. The distributed power supply regulation and control system of claim 1, wherein the 380V voltage class-accessed distributed power supply is in communication connection with a distribution area information aggregation device through a broadband power carrier; the distribution room information gathering device is in communication connection with the area information gathering device through a wireless private network; the regional information gathering device is in communication connection with the dispatching master station through a forward and reverse isolation device by adopting an optical fiber private network.
7. The distributed power regulation system of claim 1, wherein: and the data communication gateway is connected with the scheduling master station through the scheduling data network.
8. A distributed power supply regulation and control method is executed by a scheduling master station, and is characterized in that the distributed power supplies comprise distributed power supplies with 10kV and above voltage class access, distributed power supplies with 380V voltage class access and distributed power supplies with transformer substations access, and the method comprises the following steps:
acquiring operation data of a grid-connected distributed power supply, and calculating a power adjustment value by combining the operation data of the current power grid;
according to the power adjustment value, considering the current maximum power adjustment capability of each distributed power supply, and issuing power regulation and control instructions for each distributed power supply step by step from high to low according to the priority level until the residual power adjustment value is zero or each distributed power supply reaches the maximum power adjustment capability;
the priority of each distributed power supply is distributed power supplies accessed by a transformer substation, distributed power supplies accessed by 10kV or above voltage levels and distributed power supplies accessed by 380V voltage levels in sequence from high to low.
9. The distributed power supply regulation and control method of claim 8, wherein the method for issuing the power regulation and control instruction for each distributed power supply step by step according to the sequence of the priority from high to low until the remaining power adjustment value is zero or each distributed power supply reaches the maximum power regulation and control capability comprises:
judging whether the power adjustment value delta P is smaller than or equal to the maximum adjustable power delta P of the distributed power supply accessed by the transformer substationa；
If the judgment result is yes, sending a regulating instruction with a power regulation value delta P to a distributed power supply accessed by the transformer substation;
if the judgment result is no, the issued power adjustment value is delta PaThe regulating instruction is sent to the distributed power supply accessed by the transformer substation, and the residual power regulating value (delta P-delta P) is further judgeda) Maximum adjustable power delta P of distributed power supply connected with voltage class of 10kV or moreb；
If the result of the further judgment is yes, the issued power adjustment value is (delta P-delta P)a) Adjusting the instruction to a distributed power supply connected with a voltage level of 10kV or above;
if the result of the further judgment is negative, the issued power adjustment value is delta PbRegulating the command to a distributed power supply with the voltage level of 10kV or more, and judging the final residual power regulating value (delta P-delta P) againa-△Pb) Maximum adjustable power delta P of distributed power supply connected with voltage class of being smaller than or equal to 380Vc；
If the result of the second judgment is yes, the issued power adjustment value is (delta P-delta P)a-△Pb) The regulating instruction is to a 380V voltage level connected distributed power supply;
if the result of the secondary judgment is negative, the issued power adjustment value is delta PcTo a 380V voltage class switched-in distributed power supply.
10. The distributed power regulation method according to claim 8 or 9, wherein the power adjustment value Δ P is represented by the formula Δ P ═ Δ P1+△P2+△P3+△P4And calculating to obtain, wherein:
△P1for a first power adjustment, Δ P1Obtaining the frequency value of the current power grid by combining a preset frequency modulation curve;
△P2for the second power adjustment, Δ P2Acquiring actual power of a grid-connected distributed power supply by combining a pre-established photovoltaic plan tracking curve;
△P3for the third power adjustment, Δ P3Acquiring actual power of the grid-connected distributed power supply through an externally input power control instruction;
△P4for the fourth power adjustment, Δ P4The method is obtained by combining the actual power of the grid-connected distributed power supply and calculating according to the section power limitation, and the calculation formula is as follows:
ΔP4＝Psec,t-Plmt·(1-δmarg)
wherein: plmtFor stable limitation of the cross-section, deltamargTo reserve section stability margin, deltamargThe value range of (A) is 5% -10%; psec,tThe actual current of the section at time t.
11. A distributed power supply regulation and control device is characterized by comprising:
the calculation module is used for acquiring the operation data of the grid-connected distributed power supply and calculating a power adjustment value by combining the operation data of the current power grid;
the regulating module is used for giving power regulating instructions for each distributed power supply step by step from high to low according to the priority by considering the current maximum power regulating capability of each distributed power supply according to the power regulating value until the residual power regulating value is zero or each distributed power supply reaches the maximum power regulating capability;
the distributed power supplies comprise distributed power supplies with the voltage class of 10kV or above, distributed power supplies with the voltage class of 380V and distributed power supplies with the voltage class of a transformer substation; the priority of each distributed power supply is distributed power supplies accessed by a transformer substation, distributed power supplies accessed by 10kV or above voltage classes and distributed power supplies accessed by 380V voltage classes in sequence from high to low.
12. The distributed power regulation apparatus of claim 11, wherein the regulation module comprises:
a first judging module for judging whether the power adjustment value delta P is less than or equal to the maximum adjustable power delta P of the distributed power supply accessed by the transformer substationa；
The first instruction module is used for issuing a regulating instruction with a power regulation value of delta P to a distributed power supply accessed by the transformer substation if the judgment result of the first judgment module is positive;
a second judging module, configured to send a power adjustment value Δ P if the judgment result of the first judging module is negativeaThe regulating instruction is sent to the distributed power supply accessed by the transformer substation, and the residual power regulating value (delta P-delta P) is further judgeda) Maximum adjustable power delta P of distributed power supply connected with voltage class of 10kV or moreb；
A second instruction module, configured to, if the result of the determination by the second determination module is yes, issue a power adjustment value of (Δ P- Δ P)a) Adjusting the instruction to a distributed power supply connected with a voltage level of 10kV or above;
a third judging module, configured to, if the result of the judgment by the second judging module is negative, issue a power adjustment value of Δ PbRegulating the command to a distributed power supply with the voltage level of 10kV or more, and judging the final residual power regulating value (delta P-delta P) againa-△Pb) Maximum adjustable power delta P of distributed power supply connected with voltage class of being smaller than or equal to 380Vc；
A third instruction module, configured to issue a power adjustment value of (Δ P- Δ P) if the result determined by the third determination module is yesa-△Pb) The regulating instruction is to a distributed power supply connected with a 380V voltage level;
a fourth instruction module, configured to issue a power adjustment value of Δ P if the result determined by the third determination module is negativecTo a 380V voltage class switched-in distributed power supply.
13. The distributed power regulation apparatus of claim 11 or 12, wherein the calculation module comprises:
a calculating subunit for calculating the value of1+△P2+△P3+△P4Calculating to obtain a power adjustment value delta P; wherein, the calculation subunit includes:
a first obtaining subunit, configured to obtain a first power adjustment quantity Δ P by combining a preset frequency modulation curve with a current grid frequency value1；
A second obtaining subunit, configured to obtain a second power adjustment quantity Δ P by using a pre-established photovoltaic plan tracking curve and combining with the actual power of the grid-connected distributed power supply2；
A third obtaining subunit, configured to obtain a third power adjustment quantity Δ P by combining an externally input power control instruction with the actual power of the grid-connected distributed power supply3；
A fourth obtaining subunit, configured to obtain a fourth power adjustment quantity Δ P by calculating according to the section power limit by combining actual power of the grid-connected distributed power supply4The calculation formula is as follows:
ΔP4＝Psec,t-Plmt·(1-δmarg)
wherein: plmtFor stable limitation of the cross-section, deltamargTo reserve section stability margin, deltamargThe value range of (A) is 5% -10%; psec,tThe actual current of the section at time t.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124714A (en) * | 2014-08-01 | 2014-10-29 | 南京南瑞继保电气有限公司 | Method, device and system for controlling distributed generation grid-connected power |
| CN104242446A (en) * | 2014-07-10 | 2014-12-24 | 国家电网公司 | Active distribution network operation monitoring and controlling method for distributed power supplies high in permeability |
| CN104300586A (en) * | 2014-10-16 | 2015-01-21 | 许继集团有限公司 | Intelligent area regulation and control system and method applicable to distributed photovoltaic power stations |
| EP3057192A1 (en) * | 2015-02-12 | 2016-08-17 | Northeastern University | An energy internet and a hierarchical control system and a control method thereof |
| CN108599379A (en) * | 2018-06-01 | 2018-09-28 | 南方电网科学研究院有限责任公司 | A kind of power monitoring system for micro-capacitance sensor group |
-
2022
- 2022-02-11 CN CN202210129990.3A patent/CN114498936B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242446A (en) * | 2014-07-10 | 2014-12-24 | 国家电网公司 | Active distribution network operation monitoring and controlling method for distributed power supplies high in permeability |
| CN104124714A (en) * | 2014-08-01 | 2014-10-29 | 南京南瑞继保电气有限公司 | Method, device and system for controlling distributed generation grid-connected power |
| CN104300586A (en) * | 2014-10-16 | 2015-01-21 | 许继集团有限公司 | Intelligent area regulation and control system and method applicable to distributed photovoltaic power stations |
| EP3057192A1 (en) * | 2015-02-12 | 2016-08-17 | Northeastern University | An energy internet and a hierarchical control system and a control method thereof |
| CN108599379A (en) * | 2018-06-01 | 2018-09-28 | 南方电网科学研究院有限责任公司 | A kind of power monitoring system for micro-capacitance sensor group |
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