CN116780660A - Layered cooperative control method and system for distributed photovoltaic - Google Patents
Layered cooperative control method and system for distributed photovoltaic 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
- 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
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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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
- H02J3/38—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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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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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Abstract
The invention provides a layered cooperative control method and a layered cooperative control system for distributed photovoltaic, which relate to the technical field of power systems, wherein the method comprises the following steps: analyzing whether the total power generation amount of all distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area; if not, generating a regulation command; when a regulation program is triggered, the adjacent regulation areas are preferentially selected for borrowing, the borrowing difficulty of a plurality of adjacent regulation areas is analyzed, the adjacent regulation areas which are high in response enthusiasm, quick in response and easy to call are selected, surplus electric quantity of each adjacent regulation area is synthesized, the borrowed electric quantity is distributed to the selected adjacent regulation areas to generate an allocation regulation strategy, electric quantity calling control is carried out according to the allocation regulation strategy, real-time monitoring, efficient coordination and ordered management of a distributed photovoltaic system are achieved, a management mode of distributed light Fu Qunkong group regulation is formed, and adjustable resources are coordinated to perform long-time scale large-scale scheduling, so that stable operation of a power grid is improved.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a layered cooperative control method and system of distributed photovoltaic.
Background
The water conservancy resources, wind energy resources and solar energy resources of China are rich, distributed small power supplies are numerous, and the energy conservation, emission reduction, peak shifting power generation and the like have great advantages. The distributed photovoltaic power generation has strong intermittence, volatility and uncertainty, and the decentralized and high-permeability access to the power distribution network can increase the complexity and the control difficulty of the power grid, so that the problems of serious voltage fluctuation, voltage out-of-limit and the like are caused, and the economic and safe operation of the power grid is influenced.
The single or single-point distributed photovoltaic power generation sites are regulated and controlled, and although the influence on a power grid can be reduced at a single-point access position, the regulating capability of the single distributed photovoltaic is limited by conditions such as a power factor, capacity and the like, the power distribution of the single distributed photovoltaic is difficult to realize a large-range regulating effect only according to the running state of a grid connection point, and the stable operation improving effect of the power grid is limited.
Disclosure of Invention
The invention aims to solve the problems that the prior distributed photovoltaic power supply and distribution control method is difficult to realize a large-range adjusting effect by adjusting single distributed photovoltaic power distribution according to the running state of a grid connection point, and has limited effect of improving the stable running of a power grid.
In order to solve the above problems, in one aspect, the present invention provides a layered cooperative control method of distributed photovoltaic, including:
Analyzing whether the total power generation amount of all the distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaics in the current regulation area;
generating a regulation command when the total power generation amount of all the distributed photovoltaics in the current regulation region is smaller than or equal to the total load amount in the current regulation region;
analyzing the borrowing difficulty of a plurality of adjacent regulating areas adjacent to the current regulating area according to the regulating instruction, the historical operating data of the distributed photovoltaic and the real-time power generation amount;
ordering the borrowing difficulty of the adjacent regulatory regions from large to small to obtain a borrowing sequence;
analyzing the borrowing power of the current regulation and control area and the surplus power of each adjacent regulation and control area according to the historical operation data and the total power generation amount;
according to surplus electric quantity of each adjacent regulation and control area, distributing the borrowed electric quantity to a plurality of adjacent regulation and control areas in sequence according to the sequence of the borrowed sequence to obtain a distribution regulation and control strategy;
and controlling the distributed photovoltaic in a plurality of adjacent regulatory regions to supply power to the current regulatory region according to the distribution regulatory strategy.
Optionally, after analyzing whether the total power generation amount of all the distributed photovoltaics in the current regulation area is greater than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaics in the current regulation area, the layered cooperative control method of the distributed photovoltaics further includes:
when the total power generation amount of all the distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area, analyzing whether the real-time power generation amount of the distributed photovoltaics in the front regulation area is larger than the load amount in the distributed photovoltaic coverage area or not;
and when the real-time generated energy of the distributed photovoltaic is smaller than or equal to the load amount in the coverage range of the distributed photovoltaic, adjusting the power supply range of the distributed photovoltaic.
Optionally, the historical operating data of each distributed photovoltaic comprises calling in-place times, calling in-place time and communication smooth duration;
analyzing the borrowing difficulty of a plurality of adjacent regulation areas adjacent to the current regulation area according to the regulation instruction, the historical operation data of the distributed photovoltaic and the real-time power generation amount comprises the following steps:
Analyzing the calling in-place rate, the average in-place time and the communication smooth duration ratio according to the calling in-place times, the calling in-place time and the communication smooth duration;
dimensionless calling the in-place rate, the average in-place time, the communication smooth duration duty ratio and the real-time power generation amount, and combining preset weights corresponding to each parameter to obtain single borrowing difficulty of each distributed photovoltaic;
and analyzing the average value of the single borrowing difficulty of all the distributed photovoltaics in the adjacent regulation and control area according to the single borrowing difficulty of each distributed photovoltaics in the adjacent regulation and control area, and taking the average value as the borrowing difficulty of the adjacent regulation and control area.
Optionally, the historical operating data includes a historical load total for each regulatory region;
and analyzing the borrowed electricity quantity of the current regulation and control area and the surplus electricity quantity of each adjacent regulation and control area according to the historical operation data and the real-time electricity generation amount comprises the following steps:
according to the historical operation data, extracting the total historical load of the current regulation and control area and the total historical load of the adjacent regulation and control area at the same time point of the past year;
And analyzing the borrowed electricity quantity of the current regulation and control area and the surplus electricity quantity of each adjacent regulation and control area at the next time point according to the historical load total quantity and the power generation total quantity.
Optionally, the analyzing the borrowed electricity quantity of the current regulation area and the surplus electricity quantity of each adjacent regulation area at the next time point according to the historical load total quantity and the electricity generation total quantity includes:
subtracting the total power generation amount of the current regulation area from the total historical load amount of the current regulation area, and multiplying the total power generation amount by a floating coefficient to obtain the electricity borrowing amount;
subtracting the historical load total amount of the adjacent regulation area from the power generation total amount of the adjacent regulation area to obtain the surplus electric quantity of the adjacent regulation area.
Optionally, the allocating the borrowed electricity amount to a plurality of adjacent regulatory regions in turn according to the surplus electricity amount of each adjacent regulatory region and the sorting of the borrowed sequence, to obtain an allocation regulatory policy includes:
analyzing the surplus electric quantity duty ratio of each adjacent regulation and control area according to the surplus electric quantity and the real-time electric energy generation capacity of each adjacent regulation and control area;
Judging whether the surplus electric quantity occupation ratio of each adjacent regulation and control area is larger than the preset emergency electric quantity proportion of each adjacent regulation and control area;
when the surplus electric quantity proportion is larger than the emergency electric quantity proportion, analyzing the adjustable electric quantity of each adjacent regulation and control area according to the surplus electric quantity proportion and the emergency electric quantity proportion;
according to the borrowed electric quantity and the adjustable electric quantity of each adjacent regulation and control area, according to the sorting of the borrowed sequence, the electric quantity is sequentially called from the adjacent regulation and control areas, and the electric quantity called from the adjacent regulation and control areas is recorded as preset electricity consumption;
when the electric quantity is called from the adjacent regulation and control area, subtracting the preset electric quantity from the electric quantity to obtain the residual electric quantity;
when the residual borrowed electricity quantity is smaller than or equal to zero, stopping calling the electricity quantity from the adjacent regulation and control area in the borrowed and control sequence;
and generating an outer distribution regulation strategy according to the preset electricity consumption amount called from the adjacent regulation area, wherein the distribution regulation strategy comprises the outer distribution strategy and an inner distribution strategy.
Optionally, after the determining whether the surplus electricity quantity ratio of each adjacent regulation area is greater than a preset emergency electricity quantity ratio of each adjacent regulation area, the layered cooperative control method of the distributed photovoltaic further includes:
And skipping the current adjacent regulation and control area when the surplus electric quantity proportion is smaller than or equal to the emergency electric quantity proportion.
Optionally, when the surplus electricity quantity ratio is greater than the emergency electricity quantity ratio, after analyzing the adjustable electricity quantity of each adjacent regulation area according to the surplus electricity quantity ratio and the emergency electricity quantity ratio, the layered cooperative control method of the distributed photovoltaic further includes:
analyzing surplus electricity quantity of the distributed photovoltaic according to the real-time electricity generation quantity of each distributed photovoltaic and the load quantity of the distributed photovoltaic in the adjacent regulation and control area;
analyzing the surplus electric quantity duty ratio of the distributed photovoltaic according to the surplus electric quantity and the real-time generated energy;
analyzing the invokability of the distributed photovoltaic according to the surplus electric quantity duty ratio and the single borrowing difficulty;
and screening out a preset number of distributed photovoltaics according to the calling size to serve as objects to be called.
Optionally, according to the borrowing amount and the adjustable amount of each adjacent regulatory region, pre-calling the amounts of electricity from the adjacent regulatory regions in sequence according to the sorting of the borrowing sequence includes:
Analyzing the sum of the surplus electric quantity of all the objects to be called in the adjacent regulation and control area, and judging whether the sum of the surplus electric quantity of all the objects to be called in the adjacent regulation and control area is larger than the adjustable electric quantity or not;
if so, analyzing the ratio of the surplus electric quantity of each object to be called to the sum of the surplus electric quantity as an allocation proportion, and allocating the adjustable electric quantity to each object to be called according to the allocation proportion to generate the inner layer allocation strategy;
if not, the sum of the surplus electric quantity is the preset electric quantity, the surplus electric quantity of each object to be called is directly pre-called, and the inner layer allocation strategy is generated.
In another aspect, the present invention further provides a hierarchical cooperative control system of distributed photovoltaic, including:
the area monitoring module is used for analyzing whether the total power generation amount of all the distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaics in the current regulation area; the control system is further used for generating a control instruction when the total power generation amount of all the distributed photovoltaics in the current control area is smaller than or equal to the total load amount in the current control area;
The borrowing and adjusting analysis module is used for analyzing borrowing difficulty of a plurality of adjacent adjusting and controlling areas adjacent to the current adjusting and controlling area according to the adjusting and controlling instruction, the historical operating data of the distributed photovoltaic and the real-time generating capacity; the method is also used for sequencing the borrowing difficulty of the adjacent regulatory regions from large to small to obtain a borrowing sequence;
the electric quantity analysis module is used for analyzing the borrowed electric quantity of the current regulation and control area and the surplus electric quantity of each adjacent regulation and control area according to the historical operation data and the total power generation quantity;
the regulation and control strategy generation module is used for sequentially distributing the borrowed electricity quantity to a plurality of adjacent regulation and control areas according to the surplus electricity quantity of each adjacent regulation and control area and the sorting of the borrowed sequence to obtain a distribution regulation and control strategy;
and the regulation and control strategy execution module is used for controlling the distributed photovoltaic in the adjacent regulation and control areas to supply power to the current regulation and control area according to the distribution regulation and control strategy.
Compared with the prior art, the invention has the following beneficial effects:
according to the layered cooperative control method and system for the distributed photovoltaic, disclosed by the invention, the distributed photovoltaic in a plurality of areas is comprehensively managed, when the total power generation amount of all the distributed photovoltaic in the current regulation and control area is smaller than or equal to the total load amount in the current regulation and control area, the current regulation and control area is indicated to be in a power shortage state entirely, surplus electric quantity can be called from other regulation and control areas, a management mode of distributed light Fu Qunkong group regulation is formed, and the adjustable resources are coordinated to perform long-time scale large-scale scheduling, so that the stable operation of a power grid is improved. When a regulation program is triggered, in order to avoid the loss of electric energy in remote call, adjacent regulation areas are preferentially selected for borrowing, the borrowing difficulty of a plurality of adjacent regulation areas is analyzed, adjacent regulation areas with high response enthusiasm and quick response and easy to call can be selected, surplus electric quantity of each adjacent regulation area is synthesized, the borrowed electric quantity is distributed to the selected adjacent regulation areas to generate an allocation regulation strategy, electric quantity call control is performed according to the allocation regulation strategy, real-time monitoring, efficient coordination and orderly management of a distributed photovoltaic system are realized, the healthy orderly development of the distributed photovoltaic system is promoted, and the safe and stable operation of a power grid is ensured.
Drawings
Fig. 1 shows a schematic flow chart of a hierarchical cooperative control method of distributed photovoltaic in an embodiment of the present invention;
fig. 2 is a schematic flow chart of generating an allocation regulation strategy in a hierarchical cooperative control method of distributed photovoltaic according to an embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a hierarchical cooperative control system of distributed photovoltaic in an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
It is noted that the terms "first," "second," and the like in the description and claims of the invention and in the foregoing figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
In the description of the present specification, the descriptions of the terms "embodiment," "one embodiment," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or implementation of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.
Fig. 1 shows a flow chart of a hierarchical cooperative control method of distributed photovoltaic in an embodiment of the present invention, where the hierarchical cooperative control method of distributed photovoltaic includes:
s1: analyzing whether the total power generation amount of all the distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaics in the current regulation area;
specifically, all distributed photovoltaics in the management and control area are divided into a plurality of regulation and control areas according to the distribution condition of geographic positions, each regulation and control area contains a plurality of distributed photovoltaics, even if the quantity of the distributed photovoltaics is gradually increased, the distributed photovoltaics can be orderly added into a monitoring system according to the regulation and control areas where the distributed photovoltaics are positioned, and the distributed photovoltaics are orderly managed in a hierarchical management mode, so that a large number of distributed photovoltaics can be orderly managed. And carrying out real-time monitoring on the running condition of each distributed photovoltaic in each regulation and control area, and also carrying out real-time monitoring on the load condition in the regulation and control area to judge whether the electric quantity supply of each regulation and control area meets the electric quantity requirement.
S2: when the total power generation amount of all the distributed photovoltaics in the current regulation area is smaller than or equal to the total load amount in the current regulation area, the fact that the power generation amount of the current regulation area in monitoring at the moment is difficult to meet the requirement of a user on the power is indicated, electric energy needs to be called from other regulation areas, at the moment, a regulation command needs to be generated, and a subsequent calling program is triggered; in addition, the total load of the current regulation area is the total load remaining after the load supplied with electric power from the electric grid is removed.
S3: analyzing the borrowing difficulty of a plurality of adjacent regulating areas adjacent to the current regulating area according to the regulating instruction, the historical operating data of the distributed photovoltaic and the real-time power generation amount;
specifically, an adjacent regulatory region is a regulatory region adjacent to the current regulatory region, i.e., a regulatory region within a certain range around the current regulatory region may be considered an adjacent regulatory region. The regulation command triggers the regulation program, and before the electric energy is called, the calling area and the calling object are required to be definitely called. Because the generated energy of the distributed photovoltaic in different regulation areas and the load in the regulation areas are different, the running conditions of the different regulation areas are different, and once the conditions needing regulation are emergency conditions, the electric quantity needs to be called from the high-response regulation areas. In addition, in order to avoid the loss of electric energy in long-distance calling, a plurality of adjacent regulating areas which are close to the current regulating area are selected preferentially in the calling process, and then the borrowing difficulty of the adjacent regulating areas is evaluated comprehensively according to the historical operation data of the distributed photovoltaic in each adjacent regulating area and the real-time generating capacity, so that a basis is provided for subsequent selection.
S4: ordering the borrowing difficulty of the adjacent regulatory regions from large to small to obtain a borrowing sequence;
specifically, the borrowing difficulty obtained by analysis is ranked, and adjacent regulatory regions corresponding to the borrowing difficulty are also ranked correspondingly, so that a borrowing sequence can be obtained, the adjacent regulatory regions can be selected preferentially from the first position of the borrowing sequence during selection, and then the adjacent regulatory regions are sequentially selected backwards to be used as borrowing objects.
S5: analyzing the borrowing power of the current regulation and control area and the surplus power of each adjacent regulation and control area according to the historical operation data and the total power generation amount;
specifically, as described above, the running condition and the load condition of each regulation area are different, so that the callable electric quantity of each regulation area is different, specifically, how much electric quantity each adjacent regulation area can call needs to be analyzed according to how much electric quantity still remains in the adjacent regulation area, that is, how much surplus electric quantity needs to be analyzed, when the surplus electric quantity is large, the callable electric quantity is relatively large, otherwise, the callable electric quantity is relatively small, and even the electric quantity cannot be called from a certain adjacent regulation area.
S6: according to surplus electric quantity of each adjacent regulation and control area, distributing the borrowed electric quantity to a plurality of adjacent regulation and control areas in sequence according to the sequence of the borrowed sequence to obtain a distribution regulation and control strategy;
specifically, because the operation conditions of each adjacent regulation area are different, the sequencing of the borrowing sequence only analyzes the response enthusiasm of each adjacent regulation area from the historical operation data, and is the preliminary screening of the adjacent regulation areas, however, each adjacent regulation area also needs to specifically analyze the surplus electric quantity in combination with the current situation, only the adjacent regulation area with rich surplus electric quantity can be used as a called object, the borrowing electric quantity is distributed to the selected adjacent regulation area, and then each adjacent regulation area calls the electric quantity from the distributed photovoltaic in the adjacent regulation area to meet the regulation requirement.
S7: and controlling the distributed photovoltaic in a plurality of adjacent regulatory regions to supply power to the current regulatory region according to the distribution regulatory strategy.
In this embodiment, the distributed photovoltaics of multiple areas are comprehensively managed, when the total power generation amount of all the distributed photovoltaics in the current regulation area is less than or equal to the total load amount in the current regulation area, it is indicated that when the current regulation area is in a power shortage state, surplus electric quantity can be called from other regulation areas to form a management mode of distributed light Fu Qunkong group regulation, and the adjustable resources are coordinated to perform long-time scale large-scale scheduling, so that the stable operation of the power grid is improved. When a regulation program is triggered, in order to avoid the loss of electric energy in remote call, adjacent regulation areas are preferentially selected for borrowing, the borrowing difficulty of a plurality of adjacent regulation areas is analyzed, adjacent regulation areas with high response enthusiasm and quick response and easy to call can be selected, surplus electric quantity of each adjacent regulation area is synthesized, the borrowed electric quantity is distributed to the selected adjacent regulation areas to generate an allocation regulation strategy, electric quantity call control is performed according to the allocation regulation strategy, real-time monitoring, efficient coordination and orderly management of a distributed photovoltaic system are realized, the healthy orderly development of the distributed photovoltaic system is promoted, and the safe and stable operation of a power grid is ensured.
In an embodiment of the present invention, after analyzing whether the total power generation amount of all the distributed photovoltaics in the current regulation area is greater than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaics in the current regulation area, the layered cooperative control method of the distributed photovoltaics further includes:
when the total power generation amount of all the distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area, analyzing whether the real-time power generation amount of the distributed photovoltaics in the front regulation area is larger than the load amount in the distributed photovoltaic coverage area or not;
specifically, under the condition that the whole regulation area is not lack of electricity, the operation condition of each distributed photovoltaic in the regulation area needs to be further monitored, because the supply and demand in the regulation area are possibly unbalanced, some distributed photovoltaic power generation is more, but the area load covered by the regulation area is less, some distributed photovoltaic power generation is less, but the area load covered by the regulation area is more, so that some distributed photovoltaic power generation is surplus, and some distributed photovoltaic still has the condition of lack of electricity.
And when the real-time generated energy of the distributed photovoltaic is smaller than or equal to the load amount in the coverage range of the distributed photovoltaic, adjusting the power supply range of the distributed photovoltaic or calling the distributed photovoltaic with surplus generated energy.
Specifically, under the condition that the whole regulation and control area is not lack of electricity, but single distributed photovoltaic is lack of electricity, no matter the regulation of the power supply range or the calling of the electric quantity only happens inside the regulation and control area, the regulation and control action is not diffused to the outside, the regulation and control range is reduced and controlled, and the management is facilitated to be simplified. For the distributed photovoltaic with power shortage, on one hand, the power supply range of the distributed photovoltaic can be reduced, and the power supply range of the distributed photovoltaic with surplus power generation is enlarged; on the other hand, the power supply range is kept unchanged, and electric energy is directly called from the surplus distributed photovoltaic position of power generation to supply the load in the power-shortage distributed photovoltaic power supply range for use, so that the power supply pressure of the power-shortage distributed photovoltaic power supply is reduced, and the short and temporary power-shortage condition of individual distributed photovoltaic is relieved.
In one embodiment of the present invention, the historical operating data of each of the distributed photovoltaics includes a call in place number, a call in place time, and a communication clear duration; the calling in-place times are times that the distributed photovoltaic can be normally called when the distributed photovoltaic is called in history; the call-in-place time is the time taken from the sending of a call signal to the distributed photovoltaic until the distributed photovoltaic begins to power the power-deficient area; the communication smooth duration is the time when the wired or wireless communication of the distributed photovoltaic has no interruption fault and the signal can be normally received and sent.
Analyzing the borrowing difficulty of a plurality of adjacent regulation areas adjacent to the current regulation area according to the regulation instruction, the historical operation data of the distributed photovoltaic and the real-time power generation amount comprises the following steps:
analyzing the calling in-place rate, the average in-place time and the communication smooth duration ratio according to the calling in-place times, the calling in-place time and the communication smooth duration;
specifically, the calling in-place rate of a distributed photovoltaic is the calling in-place times divided by the total times of the distributed photovoltaic, and the calling is recorded as one call only by sending a calling signal to the distributed photovoltaic, so that the total times of the calling comprise the calling in-place times and the calling failure times; the average arrival time is the sum of all the calling arrival times divided by the calling arrival times; the communication unblocked duration is divided by the working duration of the distributed photovoltaic.
Dimensionless calling the in-place rate, the average in-place time, the communication smooth duration duty ratio and the real-time power generation amount, and combining preset weights corresponding to each parameter to obtain single borrowing difficulty of each distributed photovoltaic;
Specifically, the dimensionless method can adopt a normalization or standardization method to dimensionless data of different orders of magnitude, the influence degree of a plurality of data can be maintained on a horizontal line, then the importance of certain data is highlighted by setting weights, so that the reasonable and comprehensive evaluation of the borrowing difficulty degree of one distributed photovoltaic is achieved.
And analyzing the average value of the single borrowing difficulty of all the distributed photovoltaics in the adjacent regulation and control area according to the single borrowing difficulty of each distributed photovoltaics in the adjacent regulation and control area, and taking the average value as the borrowing difficulty of the adjacent regulation and control area.
Specifically, when calculating the borrowing difficulty of the adjacent regulation and control area, the individual borrowing difficulty of all the distributed photovoltaics in the adjacent regulation and control area can be summed up, and then divided by the number of the distributed photovoltaics to obtain an average value; and the single borrowing difficulty of all the distributed photovoltaics in the adjacent regulation and control area can be sequenced from large to small according to the single borrowing difficulty, then a plurality of single borrowing difficulty are selected from the first position of the sequencing sequence, and the average value of the selected single borrowing difficulty is calculated. Because the final execution unit is each distributed photovoltaic when the electric quantity of the adjacent regulation areas is called, the distributed photovoltaic with more rapid power generation in the adjacent regulation areas is selected, the latter calculation method can more accurately screen the adjacent regulation areas with more rapid power generation, and the former calculation method can represent the whole level of the adjacent regulation areas.
In one embodiment of the invention, the historical operating data includes a historical aggregate load for each regulatory region;
and analyzing the borrowed electricity quantity of the current regulation and control area and the surplus electricity quantity of each adjacent regulation and control area according to the historical operation data and the real-time electricity generation amount comprises the following steps:
according to the historical operation data, extracting the total historical load of the current regulation and control area and the total historical load of the adjacent regulation and control area at the same time point of the past year;
specifically, for example, at 2023, 5, 1, regulatory region a lacks electricity, and adjacent regulatory region B and adjacent regulatory region C adjacent thereto need to be called for electricity; at this time, the same time point in the last year (i.e. 2022, 5, 1, day) needs to be called, and the total amount of the historical load in the regulation area A, the total amount of the historical load in the adjacent regulation area B and the total amount of the historical load in the adjacent regulation area C; or extracting the total load at the same time point of the first two years or the first three years, then averaging, and taking the obtained average value as the total historical load.
And analyzing the borrowed electricity quantity of the current regulation and control area and the surplus electricity quantity of each adjacent regulation and control area at the next time point according to the historical load total quantity and the power generation total quantity.
Specifically, the power generation amount of one distributed photovoltaic can be kept in a relatively stable state in a short time, so that the current power generation amount can be used as the power generation amount of the next time point, but the load amount is obviously changed and is influenced by users of all sides, the uncontrollability is high, so that the load amount at the next time point cannot use the current load amount, and the load amount of the past year can be used as a predicted value.
Specifically, the analyzing the borrowing amount of the current regulation area and the surplus electric amount of each adjacent regulation area at the next time point according to the historical load total amount and the power generation total amount includes:
subtracting the total power generation amount of the current regulation area from the total historical load amount of the current regulation area, and multiplying the total power generation amount by a floating coefficient to obtain the electricity borrowing amount;
specifically, since it is determined that the current regulation area lacks electricity, it is necessary to know how much electric energy is needed for the current regulation area, and therefore the total amount of power generation in the current regulation area is subtracted from the total amount of historical load, but since the total amount of historical load differs from the total amount of current load, the calculated amount of power borrowing may not be accurate enough, and in order to be compatible with calculation errors, and also in order to prevent the possibility that the total amount of load continues to increase, a floating coefficient (the floating coefficient is greater than 1) may be multiplied on the basis of the subtraction of the two, so that the calculation result is increased.
Subtracting the historical load total amount of the adjacent regulation area from the power generation total amount of the adjacent regulation area to obtain the surplus electric quantity of the adjacent regulation area.
Specifically, the borrowing power of the current regulation area and the surplus power of the adjacent regulation area are calculated, and accordingly the calling strategy can be further analyzed.
Fig. 2 is a schematic flow chart of generating an allocation regulation strategy in a hierarchical cooperative control method of distributed photovoltaic according to an embodiment of the present invention, where the allocating the borrowed electricity amount to a plurality of adjacent regulation areas in turn according to the surplus electricity amount of each adjacent regulation area and the rank of the borrowing sequence, to obtain the allocation regulation strategy includes:
s61: analyzing the surplus electric quantity duty ratio of each adjacent regulation and control area according to the surplus electric quantity and the real-time electric energy generation capacity of each adjacent regulation and control area; the surplus electricity quantity duty ratio is the surplus electricity quantity divided by the real-time electricity generation quantity.
S62: judging whether the surplus electric quantity occupation ratio of each adjacent regulation and control area is larger than the preset emergency electric quantity proportion of each adjacent regulation and control area;
specifically, in order to ensure the self power supply capability of each regulation area in the process of regulating the electric quantity, all surplus electric quantity of a certain regulation area is not completely regulated when the electric quantity is regulated, but a part of electric quantity is reserved to meet the load quantity possibly increased in the future of the regulation area, and the emergency electric quantity proportion is the electric quantity proportion to be reserved as used by each regulation area.
S63: when the surplus electric quantity proportion is larger than the emergency electric quantity proportion, analyzing the adjustable electric quantity of each adjacent regulation and control area according to the surplus electric quantity proportion and the emergency electric quantity proportion; and skipping the current adjacent regulation and control area when the surplus electric quantity proportion is smaller than or equal to the emergency electric quantity proportion.
Specifically, the charge in the adjacent regulatory region is invoked only when the surplus charge ratio is greater than the emergency charge ratio. The adjustable electric quantity is an electric quantity value obtained by multiplying the surplus electric quantity ratio minus the emergency electric quantity ratio by the real-time electric quantity.
S64: according to the borrowed electric quantity and the adjustable electric quantity of each adjacent regulation and control area, according to the sorting of the borrowed sequence, the electric quantity is sequentially called from the adjacent regulation and control areas, and the electric quantity called from the adjacent regulation and control areas is recorded as preset electricity consumption;
s65: when the electric quantity is called from the adjacent regulation and control area, subtracting the preset electric quantity from the electric quantity to obtain the residual electric quantity;
s66: when the residual borrowed electricity quantity is smaller than or equal to zero, stopping calling the electricity quantity from the adjacent regulation and control area in the borrowed and control sequence;
s67: and generating an outer distribution regulation strategy according to the preset electricity consumption called from the adjacent regulation area, wherein the distribution regulation strategy comprises the outer distribution strategy and an inner distribution strategy.
Specifically, when scheduling a scheduling policy, the amount of electricity scheduled for scheduling a contiguous regulatory region cannot exceed the adjustable amount of electricity. The electric quantity borrowing can be distributed to each adjacent regulation and control area capable of carrying out electric quantity calling one by one from the starting end of the borrowing sequence until all the electric quantity borrowing is distributed, at the moment, the electric quantity borrowing is distributed to each adjacent regulation and control area only, an outer layer distribution strategy is formed, and each adjacent regulation and control area distributes a part of the electric quantity borrowing which is distributed downwards to distributed photovoltaics with rich generated energy, so that an inner layer distribution strategy is formed.
Because the adjustable electric quantity of one adjacent regulation and control area comes from the power supply surplus of all distributed photovoltaics in the area, some distributed photovoltaics have large power supply surplus and can provide more borrowed electric quantity, and some distributed photovoltaics have power supply surplus but can only provide less borrowed electric quantity. When the electricity quantity is called, if the electricity quantity is distributed according to the borrowing sequence and the adjustable electricity quantity of each adjacent regulation area, most of the borrowing quantity can be born by the adjacent regulation areas, and the most of the borrowing quantity can be distributed to a plurality of distributed photovoltaics of the adjacent regulation areas, and some of the distributed photovoltaics can only provide a small amount of borrowing quantity, so that the situation that the borrowing requirement can be met but more distributed photovoltaics need to be called can occur. In order to better call the electric quantity of each distributed photovoltaic in each adjacent regulation area, the distributed photovoltaic in each adjacent regulation area needs to be analyzed so as to avoid the centralized call of more distributed photovoltaic in one or more adjacent regulation areas when the distributed photovoltaic is called, prevent the risk resistance of the called adjacent regulation areas from being greatly reduced, and call the distributed photovoltaic with more surplus electric quantity as much as possible so as to reduce the number of called distributed photovoltaic and reduce the variation of the whole system. The following analysis was performed.
In an embodiment of the present invention, when the surplus electricity quantity ratio is greater than the emergency electricity quantity ratio, after analyzing the adjustable electricity quantity of each adjacent regulation area according to the surplus electricity quantity ratio and the emergency electricity quantity ratio, the hierarchical cooperative control method of the distributed photovoltaic further includes:
analyzing surplus electricity quantity of the distributed photovoltaic according to the real-time electricity generation quantity of each distributed photovoltaic and the load quantity of the distributed photovoltaic in the adjacent regulation and control area;
analyzing the surplus electric quantity duty ratio of the distributed photovoltaic according to the surplus electric quantity and the real-time generated energy;
specifically, when each distributed photovoltaic is analyzed, only the size of surplus electric quantity can not be seen, and the size of the surplus electric quantity ratio can also be seen, because some distributed photovoltaic generating capacity is large, but the load capacity is also large, at this time, although the surplus electric quantity is large, the actual surplus electric quantity ratio is not necessarily high, and at this time, in order to ensure the risk resistance of the distributed photovoltaic, the electric energy generated by the distributed photovoltaic is not necessarily called.
Analyzing the invokability of the distributed photovoltaic according to the surplus electric quantity duty ratio and the single borrowing difficulty;
Specifically, since the borrowing difficulty of the adjustment areas is screened once in the above scheme, the selected adjacent adjustment areas indicate that the borrowing difficulty level is higher, when the distributed photovoltaics in the areas are analyzed at the moment, the weight of the surplus electric quantity duty ratio can be set to be a larger value, and the weight of the single borrowing difficulty is set to be a smaller value, so that the distributed photovoltaics with larger surplus electric quantity duty ratio are mainly screened. For each calculation of the distributed photovoltaic callability, the surplus electric quantity duty ratio and the single borrowing difficulty degree are multiplied by the corresponding weight respectively and then summed. In addition, before calculating the callability, dimensionless processing may be performed on the surplus electric quantity duty ratio and the single borrowing difficulty level, so as to reduce the size difference between the data in different dimensions.
Screening out a preset number of distributed photovoltaics according to the calling size to serve as objects to be called;
in particular, to reduce the overcommitted calls per contiguous regulatory region, the number of distributed photovoltaics invoked in each contiguous regulatory region may be specified. Or screening according to the calling performance of the distributed photovoltaic, judging whether the calling performance of the distributed photovoltaic is larger than a preset threshold, and when the calling performance of the distributed photovoltaic is larger than the preset threshold, listing the distributed photovoltaic as an object to be called; and when the calling property of the distributed photovoltaic is smaller than or equal to a preset threshold value, not calling the distributed photovoltaic.
In one embodiment of the present invention, the pre-calling the electric quantity from the adjacent regulatory regions in sequence according to the order of the borrowing sequence according to the borrowing electric quantity and the adjustable electric quantity of each adjacent regulatory region includes:
analyzing the sum of the surplus electric quantity of all the objects to be called in the adjacent regulation and control area, and judging whether the sum of the surplus electric quantity of all the objects to be called in the adjacent regulation and control area is larger than the adjustable electric quantity or not;
if so, analyzing the ratio of the surplus electric quantity of each object to be called to the sum of the surplus electric quantity as an allocation proportion, and allocating the adjustable electric quantity to each object to be called according to the allocation proportion to generate the inner layer allocation strategy;
specifically, for example, the adjustable electric quantity is 100, the surplus electric quantity of the object to be called 1 to the object to be called 4 is 20, 40, 30 and 20 respectively, the sum of the surplus electric quantity is 110, which is larger than the adjustable electric quantity, and the electric quantity to be called is required to be ensured not to exceed the adjustable electric quantity, so that the adjustable electric quantity is the electric quantity required to be borrowed for the adjacent regulation and control area at the moment, the electric quantity is distributed, and the electric quantity can be distributed according to the distribution proportion in order to reasonably distribute the borrowed electric quantity, so that the pre-called electric quantity distributed from the object to be called 1 to the object to be called 4 is 18.2, 36.4, 27.2 and 18.2 respectively, and all the external borrowed electric quantity cannot be concentrated on a certain distributed photovoltaic.
If not, the sum of the surplus electric quantity is the preset electric quantity, the surplus electric quantity of each object to be called is directly pre-called, and the inner layer allocation strategy is generated.
In this embodiment, according to the method, the electricity borrowing amount distribution condition in each adjacent regulation and control area can be further optimized, on one hand, the electricity borrowing amount can be distributed to the distributed photovoltaic with more surplus electricity, on the other hand, the number of the regulated distributed photovoltaic is reduced, a large amount of distributed photovoltaic is prevented from being mobilized, the stability of the system is improved, and the regulation and control operation of the system is reduced.
Fig. 3 shows a schematic structural diagram of a hierarchical cooperative control system of distributed photovoltaic according to an embodiment of the present invention, where the hierarchical cooperative control system of distributed photovoltaic includes:
the area monitoring module 100 is configured to analyze whether the total power generation amount of all the distributed photovoltaics in the current regulation area is greater than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaics in the current regulation area; the control system is further used for generating a control instruction when the total power generation amount of all the distributed photovoltaics in the current control area is smaller than or equal to the total load amount in the current control area;
The borrowing and adjusting analysis module 200 is configured to analyze borrowing difficulty of a plurality of adjacent adjusting areas adjacent to the current adjusting area according to the adjusting instruction, the historical operation data of the distributed photovoltaic and the real-time power generation amount; the method is also used for sequencing the borrowing difficulty of the adjacent regulatory regions from large to small to obtain a borrowing sequence;
the electricity quantity analysis module 300 is configured to analyze the borrowed electricity quantity of the current regulation area and the surplus electricity quantity of each adjacent regulation area according to the historical operation data and the total power generation quantity;
the regulation and control strategy generation module 400 is configured to sequentially allocate the borrowed electricity to a plurality of adjacent regulation and control areas according to the surplus electricity of each adjacent regulation and control area and the rank of the borrowed sequence, so as to obtain an allocation regulation and control strategy;
and the regulation and control strategy execution module 500 is used for controlling the distributed photovoltaic in the adjacent regulation and control areas to supply power to the current regulation and control area according to the distribution regulation and control strategy.
In this embodiment, the system comprehensively manages distributed photovoltaics in multiple areas, and the area monitoring module 100 monitors that the total power generation amount of all the distributed photovoltaics in the current regulation area is less than or equal to the total load amount in the current regulation area, which indicates that the current regulation area is in a power shortage state, and can call surplus electric quantity from other regulation areas to form a management mode of distributed light Fu Qunkong group regulation, coordinate the adjustable resources to perform long-time scale large-scale scheduling, and improve the stable operation of the power grid. When a regulation and control program is triggered, the borrowing and control analysis module 200 preferentially selects adjacent regulation and control areas to borrow and control, analyzes borrowing and control difficulty of a plurality of adjacent regulation and control areas, selects adjacent regulation and control areas which are high in response enthusiasm, quick in response and easy to call, then the electric quantity analysis module 300 comprehensively analyzes surplus electric quantity of each adjacent regulation and control area, the regulation and control strategy generation module 400 distributes the borrowed electric quantity to the selected adjacent regulation and control areas to generate an allocation regulation and control strategy, and the regulation and control strategy execution module 500 executes electric quantity call control according to the allocation regulation and control strategy, so that real-time monitoring, efficient coordination and orderly management of a distributed photovoltaic system are realized, the healthy orderly development of the distributed photovoltaic system is promoted, and the safe and stable operation of a power grid is ensured.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (10)
1. The layered cooperative control method of the distributed photovoltaic is characterized by comprising the following steps of:
analyzing whether the total power generation amount of all the distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaics in the current regulation area;
generating a regulation command when the total power generation amount of all the distributed photovoltaics in the current regulation region is smaller than or equal to the total load amount in the current regulation region;
analyzing the borrowing difficulty of a plurality of adjacent regulating areas adjacent to the current regulating area according to the regulating instruction, the historical operating data of the distributed photovoltaic and the real-time power generation amount;
ordering the borrowing difficulty of the adjacent regulatory regions from large to small to obtain a borrowing sequence;
analyzing the borrowing power of the current regulation and control area and the surplus power of each adjacent regulation and control area according to the historical operation data and the total power generation amount;
According to surplus electric quantity of each adjacent regulation and control area, distributing the borrowed electric quantity to a plurality of adjacent regulation and control areas in sequence according to the sequence of the borrowed sequence to obtain a distribution regulation and control strategy;
and controlling the distributed photovoltaic in a plurality of adjacent regulatory regions to supply power to the current regulatory region according to the distribution regulatory strategy.
2. The hierarchical cooperative control method of distributed photovoltaic according to claim 1, wherein after analyzing whether the total power generation amount of all the distributed photovoltaic in the current regulation area is greater than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaic in the current regulation area, the method further comprises:
when the total power generation amount of all the distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area, analyzing whether the real-time power generation amount of the distributed photovoltaics in the front regulation area is larger than the load amount in the distributed photovoltaic coverage area or not;
and when the real-time generated energy of the distributed photovoltaic is smaller than or equal to the load amount in the coverage range of the distributed photovoltaic, adjusting the power supply range of the distributed photovoltaic.
3. The hierarchical cooperative control method of distributed photovoltaics according to claim 1, wherein the historical operating data of each of the distributed photovoltaics includes a call-in-place number, a call-in-place time, and a communication clear duration;
analyzing the borrowing difficulty of a plurality of adjacent regulation areas adjacent to the current regulation area according to the regulation instruction, the historical operation data of the distributed photovoltaic and the real-time power generation amount comprises the following steps:
analyzing the calling in-place rate, the average in-place time and the communication smooth duration ratio according to the calling in-place times, the calling in-place time and the communication smooth duration;
dimensionless calling the in-place rate, the average in-place time, the communication smooth duration duty ratio and the real-time power generation amount, and combining preset weights corresponding to each parameter to obtain single borrowing difficulty of each distributed photovoltaic;
and analyzing the average value of the single borrowing difficulty of all the distributed photovoltaics in the adjacent regulation and control area according to the single borrowing difficulty of each distributed photovoltaics in the adjacent regulation and control area, and taking the average value as the borrowing difficulty of the adjacent regulation and control area.
4. The hierarchical cooperative control method of distributed photovoltaic according to claim 1, wherein the historical operating data includes a historical load total for each regulatory region;
and analyzing the borrowed electricity quantity of the current regulation and control area and the surplus electricity quantity of each adjacent regulation and control area according to the historical operation data and the real-time electricity generation amount comprises the following steps:
according to the historical operation data, extracting the total historical load of the current regulation and control area and the total historical load of the adjacent regulation and control area at the same time point of the past year;
and analyzing the borrowed electricity quantity of the current regulation and control area and the surplus electricity quantity of each adjacent regulation and control area at the next time point according to the historical load total quantity and the power generation total quantity.
5. The hierarchical cooperative control method of distributed photovoltaic according to claim 4, wherein the analyzing the borrowed power amount of the current regulation region and the surplus power amount of each of the adjacent regulation regions at the next time point according to the historical load amount and the power generation amount comprises:
subtracting the total power generation amount of the current regulation area from the total historical load amount of the current regulation area, and multiplying the total power generation amount by a floating coefficient to obtain the electricity borrowing amount;
Subtracting the historical load total amount of the adjacent regulation area from the power generation total amount of the adjacent regulation area to obtain the surplus electric quantity of the adjacent regulation area.
6. The hierarchical cooperative control method of distributed photovoltaic according to claim 3, wherein the allocating the borrowed power to the plurality of adjacent control areas in turn according to the ranking of the borrowed sequence according to the surplus power of each adjacent control area, and obtaining an allocation control policy comprises:
analyzing the surplus electric quantity duty ratio of each adjacent regulation and control area according to the surplus electric quantity and the real-time electric energy generation capacity of each adjacent regulation and control area;
judging whether the surplus electric quantity occupation ratio of each adjacent regulation and control area is larger than the preset emergency electric quantity proportion of each adjacent regulation and control area;
when the surplus electric quantity proportion is larger than the emergency electric quantity proportion, analyzing the adjustable electric quantity of each adjacent regulation and control area according to the surplus electric quantity proportion and the emergency electric quantity proportion;
according to the borrowed electric quantity and the adjustable electric quantity of each adjacent regulation and control area, according to the sorting of the borrowed sequence, the electric quantity is sequentially called from the adjacent regulation and control areas, and the electric quantity called from the adjacent regulation and control areas is recorded as preset electricity consumption;
When the electric quantity is called from the adjacent regulation and control area, subtracting the preset electric quantity from the electric quantity to obtain the residual electric quantity;
when the residual borrowed electricity quantity is smaller than or equal to zero, stopping calling the electricity quantity from the adjacent regulation and control area in the borrowed and control sequence;
and generating an outer distribution regulation strategy according to the preset electricity consumption amount called from the adjacent regulation area, wherein the distribution regulation strategy comprises the outer distribution strategy and an inner distribution strategy.
7. The hierarchical cooperative control method of distributed photovoltaic according to claim 6, wherein after the determining whether the surplus power ratio of each of the adjacent control areas is greater than a preset emergency power ratio of each of the adjacent control areas, further comprises:
and skipping the current adjacent regulation and control area when the surplus electric quantity proportion is smaller than or equal to the emergency electric quantity proportion.
8. The hierarchical cooperative control method of distributed photovoltaic according to claim 6, wherein when the surplus electricity quantity ratio is greater than the emergency electricity quantity ratio, after analyzing the adjustable electricity quantity of each adjacent regulation area according to the surplus electricity quantity ratio and the emergency electricity quantity ratio, further comprises:
Analyzing surplus electricity quantity of the distributed photovoltaic according to the real-time electricity generation quantity of each distributed photovoltaic and the load quantity of the distributed photovoltaic in the adjacent regulation and control area;
analyzing the surplus electric quantity duty ratio of the distributed photovoltaic according to the surplus electric quantity and the real-time generated energy;
analyzing the invokability of the distributed photovoltaic according to the surplus electric quantity duty ratio and the single borrowing difficulty;
and screening out a preset number of distributed photovoltaics according to the calling size to serve as objects to be called.
9. The hierarchical cooperative control method of distributed photovoltaic according to claim 8, wherein the sequentially pre-invoking the electricity from the adjacent regulatory regions according to the borrowing electricity and the adjustable electricity of each adjacent regulatory region in the order of the borrowing sequence comprises:
analyzing the sum of the surplus electric quantity of all the objects to be called in the adjacent regulation and control area, and judging whether the sum of the surplus electric quantity of all the objects to be called in the adjacent regulation and control area is larger than the adjustable electric quantity or not;
if so, analyzing the ratio of the surplus electric quantity of each object to be called to the sum of the surplus electric quantity as an allocation proportion, and allocating the adjustable electric quantity to each object to be called according to the allocation proportion to generate the inner layer allocation strategy;
If not, the sum of the surplus electric quantity is the preset electric quantity, the surplus electric quantity of each object to be called is directly pre-called, and the inner layer allocation strategy is generated.
10. A hierarchical cooperative control system for distributed photovoltaic, comprising:
the area monitoring module is used for analyzing whether the total power generation amount of all the distributed photovoltaics in the current regulation area is larger than the total load amount in the current regulation area according to the real-time power generation amount of each distributed photovoltaics in the current regulation area; the control system is further used for generating a control instruction when the total power generation amount of all the distributed photovoltaics in the current control area is smaller than or equal to the total load amount in the current control area;
the borrowing and adjusting analysis module is used for analyzing borrowing difficulty of a plurality of adjacent adjusting and controlling areas adjacent to the current adjusting and controlling area according to the adjusting and controlling instruction, the historical operating data of the distributed photovoltaic and the real-time generating capacity; the method is also used for sequencing the borrowing difficulty of the adjacent regulatory regions from large to small to obtain a borrowing sequence;
the electric quantity analysis module is used for analyzing the borrowed electric quantity of the current regulation and control area and the surplus electric quantity of each adjacent regulation and control area according to the historical operation data and the total power generation quantity;
The regulation and control strategy generation module is used for sequentially distributing the borrowed electricity quantity to a plurality of adjacent regulation and control areas according to the surplus electricity quantity of each adjacent regulation and control area and the sorting of the borrowed sequence to obtain a distribution regulation and control strategy;
and the regulation and control strategy execution module is used for controlling the distributed photovoltaic in the adjacent regulation and control areas to supply power to the current regulation and control area according to the distribution regulation and control strategy.
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