CN111064231A - New energy graded interactive consumption method and system - Google Patents
New energy graded interactive consumption method and system Download PDFInfo
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- CN111064231A CN111064231A CN201911376409.2A CN201911376409A CN111064231A CN 111064231 A CN111064231 A CN 111064231A CN 201911376409 A CN201911376409 A CN 201911376409A CN 111064231 A CN111064231 A CN 111064231A
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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
- 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
Abstract
The invention provides a new energy graded interactive consumption method, which comprises the following steps: according to a pre-constructed new energy cross-region consumption model based on a scheduling plan, obtaining new energy consumption conditions under each section in the existing cross-region system, and carrying out section division recombination based on the new energy consumption conditions to obtain an interconnected cross-region system consisting of a plurality of newly divided sections and section levels and interaction coefficients of the sections at all levels; and on the basis, solving a pre-constructed new energy interactive absorption model based on an interactive coefficient, and calculating to obtain a new energy power generation plan and a connecting line transmission plan under each section which enables the interconnection cross-region system to have the minimum new energy interactive quantity and the minimum new energy electricity abandonment. The technical scheme provided by the invention promotes the surplus power generation and consumption of new energy and reduces the overall difficulty of interaction and coordination of the new energy.
Description
Technical Field
The invention relates to the field of new energy consumption, in particular to a new energy graded interactive consumption method and system.
Background
According to the distribution characteristics of new energy resources, the new energy resources in local areas are rich, but the corresponding load requirements are low, so that the local areas cannot generate electricity by consuming the new energy by the full amount of the local areas, and the inter-provincial, inter-provincial and inter-regional interactive consumption strategies of the new energy are set by means of the inter-provincial, inter-provincial and inter-regional connection line delivery and consumption. However, the interaction between new energy and thermal power generating units in provinces, provinces and cross-district needs coordination of provincial-level, central-level and national-level regulation scheduling mechanisms in combination with the operation condition of a power grid, and the interaction difficulty is gradually improved.
Disclosure of Invention
In order to solve the problem that the difficulty of interactive scheduling of new energy in provinces, provinces and across regions is increased gradually, the invention provides a new energy graded interactive consumption method, provides an interactive coefficient to describe the difficulty of the interactive scheduling of the new energy, constructs a new energy trans-regional consumption model based on a scheduling plan and a new energy interactive consumption model based on the interactive coefficient, analyzes the new energy consumption condition of a trans-regional system by using a time sequence simulation method, optimizes the interactive consumption strategy of the new energy in the provinces, the provinces and the across regions, promotes surplus power generation consumption of the new energy, and reduces the difficulty of the interactive coordination of the new energy.
The technical scheme provided by the invention is as follows:
a new energy graded interactive consumption method comprises the following steps:
obtaining new energy consumption conditions under each section in the existing trans-regional system based on a new energy trans-regional consumption model of a scheduling plan;
carrying out section division recombination according to the new energy consumption condition under each existing section to obtain an interconnected cross-regional system consisting of a plurality of newly divided sections and section levels;
and substituting the newly divided various sections and section levels and preset interaction coefficients of the sections into a pre-constructed new energy interaction absorption model based on the interaction coefficients, and calculating to obtain a new energy power generation plan under each section, which enables the interaction amount of the new energy of the interconnection cross-regional system considering the interaction coefficients to be minimum and the electricity discard of the new energy to be minimum, and a transmission plan of each section connecting line in the region and among the regions in the interconnection cross-regional system.
Preferably, the obtaining of the new energy consumption condition under each existing section by the new energy cross-region consumption model based on the scheduling plan includes:
solving the new energy cross-region consumption model based on the scheduling plan by adopting a mixed integer programming method to obtain an ideal power generation power curve of new energy under each section;
and analyzing and calculating to obtain the new energy consumption condition under each section based on the ideal power generation power curve of the new energy under each section.
Preferably, the dividing and recombining the sections according to the new energy consumption condition under each existing section to obtain an interconnected cross-regional system composed of a plurality of newly divided sections and section levels includes:
according to the new energy consumption condition under each existing section and by combining the abandoned wind and abandoned light in each section, fusing adjacent sections with the new energy electricity abandoning phenomenon to obtain a plurality of newly divided sections;
and based on the new energy consumption condition of the newly divided multiple sections, dividing the rest sections into interconnected cross-regional systems comprising multiple stages of sections by taking the sections with the new energy electricity abandoning phenomenon as a reference.
Preferably, the setting of the interaction coefficient of each stage of the cross sections includes:
according to the multi-stage sections, the higher the set level is, the larger the section interaction coefficient is, and the connection section interaction coefficient is smaller than the disconnection section interaction coefficient.
Preferably, the building of the new energy cross-region consumption model based on the dispatching plan includes:
according to the operation parameters and the load condition of the existing section new energy unit in the existing cross-regional system, obtaining a new energy power generation output curve, the operation state of a thermal power generating unit, the power generation power of the thermal power generating unit, an extra-high voltage direct-current line transmission plan, a cross-regional system standby demand and a load node power generation demand;
determining a target function taking the minimum electric quantity of the new energy abandoned of the trans-regional system as an optimization target according to the theoretical power generation capacity and the actual output of the new energy unit in the new energy power generation output curve;
and determining power balance constraint, cross-region system standby constraint, cross-region system operation constraint, cross-region system inter-section tie line operation constraint, cross-region system extra-high voltage direct current line operation constraint and cross-region system new energy power generation constraint under each section of the target function according to the thermal power unit operation state, the thermal power unit power generation power, the ultra-high voltage direct current line transmission plan, the cross-region system standby requirement and the load node power generation requirement.
Preferably, the building of the new energy interaction consumption model based on the interaction coefficient includes:
according to the operation parameters and the load conditions of various generator sets on each section in the interconnected cross-regional system, a new energy power generation output curve, the operation state of a thermal power generating set, the power generation power of the thermal power generating set, an extra-high voltage direct current line transmission plan, a cross-regional system standby demand and a load node power generation demand are obtained;
according to the generated output curve of the new energy generating set in the interconnected cross-regional system, the generated power of the thermal power generating set and the interaction coefficient of the thermal power generating set in each section, determining a target function taking the minimum cross-regional system new energy interaction amount and the minimum new energy electricity abandonment of the interaction coefficient as optimization targets;
according to the operation state of the thermal power generating unit, the generating power of the thermal power generating unit, the ultra-high voltage direct current line transmission plan, the cross-region system standby requirement and the load node generating requirement, determining power balance constraint under each section of the interconnected cross-region system, each section standby constraint of the interconnected cross-region system, thermal power generating unit operation constraint under each section of the interconnected cross-region system, tie line operation constraint between each section of the interconnected cross-region system, each section ultra-high voltage direct current line operation constraint of the interconnected cross-region system and each section new energy interactive absorption constraint of the interconnected cross-region system of the objective function.
Further, the objective function with minimum new energy curtailment of the cross-regional system as an optimization objective is shown as follows:
wherein T is the simulation time length of the model, I is the number of the existing sections in the trans-regional system,
the theoretical power generation capacity of the wind field wi in the section i in the time period t,
the theoretical power generation capacity of the photovoltaic power station pi in the section i in the time period t,
the actual output of the wind field wi in the section i in the time period t,
the actual output of the photovoltaic power station Pi in the section i in the time period t is shown, Wi is the number of the wind and light field stations in the section i, and Pi is the number of the photovoltaic power stations in the section i.
Further, the objective function with minimum new energy interaction amount and minimum new energy power curtailment of the cross-region system considering the interaction coefficient as the optimization target is shown as the following formula:
wherein J is six types of sections in the interconnected cross-regional system; ij is the number of j type sections in the interconnected cross-regional system; cjIs the interaction coefficient of a thermoelectric generator set in the j-th section in an interconnected cross-regional system, and CjLess than 1;
generating power increment of a section i thermal power generating unit fij in a j-th section in the interconnected cross-regional system in a t period;
generating power increment of a section i wind power plant wij in a j-th section in the interconnected cross-regional system in a t period;
and increasing the generated power of a section i photovoltaic power station pij in a j-th section in the interconnected cross-regional system in a t period.
A hierarchical interactive consumption system of new energy, the system comprising:
the new energy cross-region consumption module based on the dispatching plan is used for analyzing and calculating new energy consumption conditions under the existing sections based on a pre-constructed new energy cross-region consumption model based on the dispatching plan;
the section recombination module is used for dividing and recombining the sections according to the new energy consumption condition under each existing section to obtain an interconnected cross-regional system consisting of a plurality of newly divided sections and section levels, and setting interaction coefficients of each level of sections;
and the new energy interactive consumption module based on the interaction coefficient is used for calculating to obtain a new energy power generation plan under each section with the minimum new energy interaction amount and the minimum new energy electricity abandonment of the interconnection cross-regional system considering the interaction coefficient based on the newly divided various sections, the section levels and the interaction coefficients of the sections, and a transmission plan of each section connecting line in the area and between the areas in the interconnection cross-regional system.
Preferably, the new energy resource cross-region consumption module based on the dispatch plan includes: the device comprises a first objective function unit, a first constraint condition unit and a consumption analysis unit;
the first objective function unit is used for determining an objective function taking the minimum electric quantity of the new energy abandoned of the trans-regional system as an optimization objective according to the theoretical power generation capacity and the actual output of the new energy unit in the new energy power generation output curve;
the first constraint condition unit is used for determining power balance constraint under each section of the trans-regional system, trans-regional system standby constraint, thermal power unit operation constraint under each section of the trans-regional system, tie line operation constraint between each section of the trans-regional system, trans-regional system extra-high voltage direct current line operation constraint and new energy power generation constraint under each section of the trans-regional system, which are objective functions taking minimum new energy electricity abandonment quantity of the trans-regional system as an optimization target, according to the operation state of the thermal power unit, the power generation power of the thermal power unit, the transmission plan of the extra-high voltage direct current line, the trans-regional system standby requirement and the load node power generation requirement;
and the consumption analysis unit is used for solving the new energy cross-region consumption model based on the scheduling plan by adopting a mixed integer programming method to obtain an ideal power generation power curve of the new energy under each section, and analyzing and calculating to obtain the new energy consumption condition under each section based on the ideal power generation power curve of the new energy under each section.
Preferably, the section restructuring module comprises: the system comprises an analysis unit, an interconnection cross-regional system establishment unit and an interaction coefficient setting unit;
the new energy consumption analysis unit is used for analyzing the phenomenon of wind and light abandoning in each section according to the new energy consumption condition under each existing section;
the interconnection cross-regional system establishing unit is used for fusing adjacent sections with the new energy electricity abandoning phenomenon according to the wind abandoning and light abandoning phenomenon in each section, and establishing an interconnection cross-regional system consisting of a plurality of newly divided sections and section levels by taking the sections with the new energy electricity abandoning phenomenon as a reference;
the interaction coefficient setting unit is used for setting the higher cross section interaction coefficient of the level according to the multi-level cross sections, and the connection cross section interaction coefficient is smaller than the disconnection cross section interaction coefficient.
Preferably, the new energy interactive consumption module based on the interaction coefficient includes: the second objective function unit, the second constraint condition unit and the scheduling planning unit;
the second objective function unit is used for determining an objective function taking the minimum cross-regional system new energy interaction amount and the minimum new energy electricity abandonment of the interaction coefficient as optimization objectives according to the generated output curve of the new energy generating set in the interconnected cross-regional system, the generated power of the thermal power generating set and the interaction coefficient of the thermal power generating set in each section;
the second constraint condition unit is used for determining power balance constraint under each section of the interconnected cross-region system, backup constraint of each section of the interconnected cross-region system, thermal power unit operation constraint under each section of the interconnected cross-region system, tie line operation constraint between each section of the interconnected cross-region system, ultrahigh-voltage direct-current line operation constraint of each section of the interconnected cross-region system and new energy interactive absorption constraint of each section of the interconnected cross-region system, wherein the minimum cross-region system new energy mutual momentum and the minimum new energy electricity discarding of an interaction coefficient are taken as objective functions of an optimization target according to the operation state of the thermal power unit, the thermal power unit generation power of the thermal power unit, the ultrahigh-voltage direct-current line transmission plan, the cross-region system standby requirement and the load node power generation requirement;
and the scheduling planning unit is used for calculating to obtain a new energy power generation plan under each section of the interconnected cross-regional system and a cross-section tie line conveying plan in and among the interconnected cross-regional system according to the objective function and the related constraint conditions.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a new energy graded interactive consumption method, which is based on a new energy cross-region consumption model of a scheduling plan to obtain the new energy consumption condition under each section in the existing cross-region system; carrying out section division recombination according to the new energy consumption condition under each existing section to obtain an interconnected cross-regional system consisting of a plurality of newly divided sections and section levels; and substituting the newly divided various sections and section levels and preset interaction coefficients of the sections into a pre-constructed new energy interaction absorption model based on the interaction coefficients, and calculating to obtain a new energy power generation plan under each section, which enables the interaction amount of the new energy of the interconnection cross-regional system considering the interaction coefficients to be minimum and the electricity discard of the new energy to be minimum, and a transmission plan of each section connecting line in the region and among the regions in the interconnection cross-regional system. The technical scheme provided by the invention provides an interaction coefficient to describe the difficulty of new energy interactive scheduling, a new energy cross-region consumption model based on a scheduling plan and a new energy interactive consumption model based on the interaction coefficient are constructed, the new energy consumption condition of a cross-region system is analyzed by using a time sequence simulation method, the inter-provincial, inter-regional and cross-region interactive consumption strategies of new energy are optimized, the surplus power generation consumption of the new energy is promoted, and the difficulty of new energy interactive coordination is reduced.
According to the technical scheme provided by the invention, a new energy cross-regional consumption model based on a scheduling plan is constructed, a time sequence simulation method is utilized to analyze the new energy consumption condition of a cross-regional system, and then section division recombination is carried out according to whether a wind and light abandoning phenomenon exists under the existing section, so that an interconnected cross-regional system is established.
According to the technical scheme provided by the invention, a new energy interactive consumption model based on interactive coefficients is constructed, the interactive coefficients describing the interactive coordination difficulty of new energy and the inter-provincial thermal power generating units, the inter-provincial thermal power generating units and the cross-regional thermal power generating units are sequentially increased according to the interconnected cross-regional system structure, a new energy interactive consumption strategy is optimized, the overall difficulty of the interactive coordination of new energy is reduced, and the surplus power generation consumption of the new energy is promoted.
Drawings
FIG. 1 is a flowchart illustrating an embodiment of a new energy graded interactive consumption method according to the present invention;
FIG. 2 is a flowchart illustrating a new energy interaction consumption strategy optimization process according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a cross-regional system in an embodiment of the present invention;
FIG. 4 is a schematic diagram of an interconnected inter-regional system in an embodiment of the invention;
fig. 5 is a structural diagram of a new energy hierarchical interactive consumption system according to the present invention.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. In addition, the criteria for dividing the regions in the present invention are: setting a country as a first level (state regulation level), and sequentially setting levels according to a power grid distribution form of the country; in the subsequent implementation, taking China as an example, China is set as the first level; five areas are arranged in China, and are the second level; each area corresponds to a plurality of provinces and is a third level; wherein the regions of the second stage comprise: north China, east China, northwest and northeast China. If the east China area of the second level is taken as an example, the third level includes Jiangsu, Anhui, Zhejiang, Fujian and Shanghai. If the northwest region of the second level is taken as an example, the third level includes five provinces of Shaanxi, Gansu, Qinghai, Ningxia and Xinjiang. Although the embodiment of the invention takes china as an example, the invention is not limited to china, and the provinces mentioned above correspond to the third level in the power grid.
Example 1:
the new energy hierarchical interactive consumption method provided by the embodiment of the invention has the specific implementation process shown in fig. 1, and comprises the following steps:
s101: obtaining new energy consumption conditions under each section in the existing trans-regional system based on a new energy trans-regional consumption model of a scheduling plan;
s102: carrying out section division recombination according to the new energy consumption condition under each existing section to obtain an interconnected cross-regional system consisting of a plurality of newly divided sections and section levels;
s103: and substituting the newly divided various sections and section levels and preset interaction coefficients of the sections into a pre-constructed new energy interaction absorption model based on the interaction coefficients, and calculating to obtain a new energy power generation plan under each section, which enables the interaction amount of the new energy of the interconnection cross-regional system considering the interaction coefficients to be minimum and the electricity discard of the new energy to be minimum, and a transmission plan of each section connecting line in the region and among the regions in the interconnection cross-regional system.
Specifically, step S101 is to obtain new energy consumption conditions under each section in the existing trans-regional system based on a new energy trans-regional consumption model of a scheduling plan, and the specific implementation process includes:
step S101-1, constructing a new energy cross-region consumption model based on a scheduling plan:
step S101-1-1, obtaining a new energy power generation output curve, a thermal power unit operation state, thermal power unit power generation power, an extra-high voltage direct current line transmission plan, a cross-region system standby requirement and a load node power generation requirement according to the existing section new energy unit operation parameters and the load condition in the existing cross-region system;
step S101-1-2, according to theoretical power generation capacity and actual power generation capacity of the new energy unit in the new energy power generation output curve, determining an objective function taking minimum electric quantity of new energy abandoned of the trans-regional system as an optimization target according to the following formula:
wherein T is the simulation time length of the model, I is the number of the existing sections in the trans-regional system,
is the theoretical hair of the section i with wind electric field wi in the t time periodThe capacity of the electricity is measured by the electric power,
the theoretical power generation capacity of the photovoltaic power station pi in the section i in the time period t,
the actual output of the wind field wi in the section i in the time period t,
the actual output of the photovoltaic power station Pi in the section i in the time period t is shown, Wi is the number of the wind and light field stations in the section i, and Pi is the number of the photovoltaic power stations in the section i;
s101-1-3, determining power balance constraint, cross-region system standby constraint, cross-region system operation constraint, cross-region system cross-section tie line operation constraint, cross-region system ultra-high voltage direct current line operation constraint and cross-region system new energy power generation constraint of the objective function according to the thermal power unit operation state, thermal power unit power generation power, ultra-high voltage direct current line transmission plan, cross-region system standby requirement and load node power generation requirement of the objective function under each cross-region system cross-section:
the power balance constraint under each section of the trans-regional system is shown as follows:
wherein Fi is the number of the fire-electricity generator sets in the section i, Mi is the number of the alternating-current connecting lines in the section i, Li is the number of load nodes in the section i, Hi is the number of the direct-current connecting lines in the section i, Wi is the number of the wind-light field stations in the section i, Pi is the number of the photovoltaic power stations in the section i,
the running state of a live-wire generator fi in the section i at the moment t,
section i medium-fire generator set fiThe generated power at the time t is,
for the power generation demand of the load node mi at time t in the section i,
the transmission power of an alternating current tie line li in the section i at the moment t is shown;
the power delivered by the dc link hio at time t in section i,
the actual output of the wind field wi in the section i in the time period t,
the actual output of the photovoltaic power station pi in the section i in the time period t is shown;
the cross-regional system standby constraint is shown as follows:
wherein the content of the first and second substances,
the running state of a live-wire generator fi in the section i at the moment t,
the power is the climbing power of the thermal power generating unit fi with the section i upward,
the power of the thermal power generating unit fi is the climbing power of the section i downwards,
the maximum generating power of the thermal power generating unit fi is the section i,
the minimum generating power of the thermal power generating unit fi is the section i,
the generated power of a medium-voltage generator unit fi at the moment t is RutFor up-standby requirement of cross-regional system, RdtThe demand for the downward standby of the cross-regional system is met;
the thermal power generating unit operation constraint under each section of the trans-regional system is as follows:
wherein the content of the first and second substances,
the generated power of the live-wire generator fi in the section i at the moment t,
the maximum generating power of the thermal power generating unit fi is the section i,
the minimum generating power of the thermal power generating unit fi is the section i,
the power is the climbing power of the thermal power generating unit fi with the section i upward,
for the downward climbing power of i thermal power generating unit fi of section, TSfiMinimum shutdown time, TO for i thermal power generating unit fi of sectionfiThe minimum starting time of the thermal power generating unit fi is the section i,
for the running state of the medium-voltage generator set fi at the moment k in the section i, QfiThe minimum power generation amount of the thermal power generating unit fi is the section i,
the planned generating power of the thermal power generating unit fi at the time t is the section i;
the tie-line operating constraints between the cross-regional system sections are as follows:
wherein the content of the first and second substances,
for the maximum power delivered by the ac link li,
for the minimum transmitted power of the ac link li,
the transmission power of the ac link li at time t;
the operation constraint of the extra-high voltage direct current line of the trans-regional system is shown as the following formula:
wherein the content of the first and second substances,
for the minimum transmitted power of the dc link hi,
for the maximum power delivered on the dc link hi,
the transmission power of the dc link hi in section i at time t,
for the increase in the delivered power of the dc link hi at time t,
for the maximum adjustment amplitude of the dc link hi upwards at time t,
for the maximum adjustment amplitude of the dc link hi downwards at time t,
the state variable of the direct current line l with the downward power transmission at the time t (1 is adjusted, 0 is not adjusted),
state variables (1 for regulation, 0 for no regulation) for upward regulation of the power delivered by the DC line l at time t, THhiFor the minimum stabilized time, NH, after adjustment of the power delivered by the DC line hihiFor the maximum number of power adjustments to be delivered by the dc link hi,
the maximum amount of power to be traded is planned for the dc link hi,
the minimum amount of power to be traded is planned for the dc link hi,
the planned transmission power of the direct current tie line hi at the time t is transmitted;
the new energy power generation constraint under each section of the trans-regional system is shown as the following formula:
wherein the content of the first and second substances,
the actual output of the wind field wi in the section i in the time period t,
the theoretical power generation capacity of the wind field wi in the section i in the time period t,
the actual output of the photovoltaic power station pi in the section i in the time period t,
the theoretical power generation capacity of the photovoltaic power station pi in the section i at the time t is shown;
s101-2, solving a new energy cross-region absorption model based on a scheduling plan by adopting a mixed integer programming method or commercial software (such as CPLEX), and obtaining an ideal power generation power curve of new energy under each section;
and S101-3, analyzing and calculating to obtain the new energy consumption condition under each section based on the ideal power generation power curve of the new energy under each section.
Specifically, in step S102, the cross-section division and recombination are performed according to the new energy consumption condition under each existing cross-section to obtain an interconnected cross-regional system composed of a plurality of newly divided cross-sections and cross-section levels, and the specific implementation process includes:
step S102-1, analyzing the wind and light abandoning phenomena in each section according to the new energy consumption condition under each section;
s102-2, fusing adjacent sections with new energy electricity abandoning phenomena according to wind abandoning and light abandoning phenomena in each section, and establishing an interconnected cross-regional system; the interconnected trans-regional system sets the state as a first level (state regulation level) and sets the levels in sequence in a power grid distribution form of the state;
step S102-3, based on the new energy consumption condition of each section in the interconnected cross-regional system, taking the section with the new energy electricity abandoning phenomenon as a reference, dividing the rest sections as follows:
the first-order section comprises: the section of the national standard grade is connected with the section with the new energy electricity abandoning phenomenon, and the section of the national standard grade is not connected with the section with the new energy electricity abandoning phenomenon;
the lower sections of the first stage include: the sections are connected with the sections with the new energy electricity abandoning phenomenon in each level, and the sections are not connected with the sections with the new energy electricity abandoning phenomenon in each level;
specifically, the method can be divided into six types, namely a section (type I section) connected with the province, a section (type II section) disconnected with the province, a section (type III section) connected with the province, a section (type IV section) disconnected with the province, a section (type V section) connected with the bay, and a section (type VI section) disconnected with the bay;
step S102-4, setting the interaction coefficients of the six types of connection sections as follows:
according to the principle that the intra-provincial interaction is superior to the inter-provincial interaction and the inter-provincial interaction is superior to the cross-regional interaction, the interaction coefficients of the sections I, II, III, IV, V and VI are set to be increased in sequence.
Specifically, step S103 is to bring the newly divided various sections and section levels and the preset interaction coefficients of the sections into a pre-constructed new energy interaction absorption model based on the interaction coefficients, and calculate to obtain a new energy power generation plan under each section that minimizes the new energy interaction amount and the new energy electricity discard amount of the interconnected cross-regional system in consideration of the interaction coefficients, and a transportation plan of each section connecting line in the region and between the regions in the interconnected cross-regional system, wherein the specific implementation process includes:
step S103-1, establishing a new energy interactive consumption model based on the interactive coefficient:
step S103-1-1, obtaining a new energy power generation output curve, a thermal power generating unit operation state, thermal power generating unit power generation power, an extra-high voltage direct current line transmission plan, a cross-regional system standby requirement and a load node power generation requirement according to operation parameters and load conditions of various generator sets on each section in an interconnected cross-regional system;
step S103-1-2, according to the generated output curve of the new energy unit, the generated power of the thermal power generating unit and the interaction coefficient of the thermal power generating unit in each section, determining an objective function taking the minimum cross-regional system new energy interaction amount and the minimum new energy electricity abandonment of the interaction coefficient as optimization targets as shown in the following formula:
wherein T is the simulation time length of the model, I is the number of the existing sections in the trans-regional system,
is in section iThe theoretical power generation capacity of the wind farm wi during the time period t,
the theoretical power generation capacity of the photovoltaic power station pi in the section i in the time period t,
the actual output of the wind field wi in the section i in the time period t,
the actual output of the photovoltaic power station Pi in the section i in the time period t is shown, Wi is the number of the wind and light field stations in the section i, and Pi is the number of the photovoltaic power stations in the section i;
step S103-1-3, according to the operation state of the thermal power generating unit, the power generation power of the thermal power generating unit, the ultra-high voltage direct current line transmission plan, the cross-region system standby requirement and the load node power generation requirement, determining power balance constraint under each section of the interconnected cross-region system, each section standby constraint of the interconnected cross-region system, thermal power generating unit operation constraint under each section of the interconnected cross-region system, tie line operation constraint between each section of the interconnected cross-region system, each section ultra-high voltage direct current line operation constraint of the interconnected cross-region system and each section new energy interactive absorption constraint of the interconnected cross-region system;
the new energy interactive absorption model based on the interactive coefficient takes the minimum cross-regional system new energy mutual momentum and the minimum new energy electricity discharge which take the interactive coefficient into consideration as optimization targets, and meets the power balance constraint under each section of the interconnected cross-regional system, the standby constraint of each section of the interconnected cross-regional system, the thermal power unit operation constraint under each section of the interconnected cross-regional system, the tie line operation constraint between each section of the interconnected cross-regional system, the ultrahigh voltage direct current line operation constraint of each section of the interconnected cross-regional system and the new energy interactive absorption constraint of each section of the interconnected cross-regional system on the basis of the original scheduling plan, wherein the former five constraints are consistent with the cross-regional absorption model based on the scheduling plan;
the interactive consumption constraint of the new energy of each section of the interconnected cross-regional system is shown as the following formula:
wherein the content of the first and second substances,
for the generated power of a thermal power generating unit fij in a j-th section in an interconnected cross-regional system after optimization by using a cross-regional consumption model based on a dispatching plan in a t period,
for the increment of the generated power of the i-th thermal power generating unit fij in the j-th section in the interconnected cross-regional system in the t period,
for the power generation (transmission) power of a thermal power generating unit fij of a section i in a j type section in an interconnected cross-regional system after the power is changed in a t period,
for the section i wind power station wij in the j-th section in the interconnected cross-regional system, the generated power is optimized by using a cross-regional absorption model based on a dispatching plan in the t period,
for the increment of the generated power of the section i wind power station wij in the j-th section in the interconnected cross-regional system in the t period,
for the generated power of the section i wind power station wij in the j-th section in the interconnected cross-regional system after the power change in the t time period,
for the section i photovoltaic power station pij in the j-th section in the interconnected cross-regional system, the generated power is optimized by using a cross-regional absorption model based on a dispatching plan at the time t,
for the increment of the generated power of a photovoltaic power station pij of a section i in a j-th section in an interconnected cross-regional system in a t period,
for the generated power of a photovoltaic power station pij of a section i in a j-th section in an interconnected cross-regional system after the power change in a t period,
for the section i ultrahigh voltage direct current line lij in the j type section in the interconnected cross-regional system, the generated power after the optimization of the cross-regional absorption model based on the dispatching plan is utilized,
in order to increase the generated power of a section i ultrahigh voltage direct current line lij in a j-th section of an interconnected cross-regional system in a t period,
the method is used for generating power of a section i extra-high voltage direct current line lij in a j-th section in an interconnected cross-regional system after power change in a t period.
Example 2:
the invention provides a new energy inter-provincial-trans-regional interactive consumption strategy, which is characterized in that an interaction coefficient is provided to describe the interactive scheduling difficulty of new energy by combining the phenomenon that the interactive scheduling difficulty of the new energy is gradually increased in the inter-provincial, the inter-provincial and the trans-regional modes, a new energy trans-regional consumption model based on a scheduling plan and a new energy interactive consumption model based on the interaction coefficient are constructed, the new energy consumption condition of a trans-regional system is analyzed by using a time sequence simulation method, the new energy inter-provincial, inter-provincial and trans-regional interactive consumption strategy is optimized, the surplus power generation consumption of the new energy is promoted, the interactive coordination difficulty of the new energy is reduced, and the optimization process of the new energy interactive consumption strategy is shown in figure 2.
According to the principle that intra-provincial interaction is superior to inter-provincial interaction and inter-provincial interaction is superior to cross-regional interaction, the interaction coefficients for describing the interaction coordination difficulty of the new energy and the provincial regulation thermal power unit, the central-level regulation thermal power unit and the national-level regulation thermal power unit are sequentially increased, so that under the condition that the interaction consumption electric quantity of the new energy is constant, the interaction strategy of the new energy and the intra-provincial regulation thermal power unit is preferentially utilized, and the interaction overall coordination difficulty of the new energy is reduced.
The new energy cross-region consumption model based on the dispatching plan is characterized in that a thermal power unit operation state, thermal power unit power generation power and ultra-high voltage direct current line transmission power are used as decision variables, the minimum of new energy electricity abandonment is used as an optimization target, under the conditions of meeting system operation constraint, thermal power unit fixed power generation constraint, thermal power unit planned power generation constraint, power grid safety constraint, ultra-high voltage direct current line fixed power operation constraint and the like, a time sequence simulation method is used for analyzing the new energy consumption condition of a cross-region system (shown in an attached figure 3), and cross-section division recombination is carried out according to the fact that whether a wind abandoning and light abandoning phenomenon exists under the existing cross section, so that an interconnected cross-region system is established.
The new energy interactive consumption model based on the interactive coefficient takes the operation state of the flexible thermal power generating unit, the power generation increment of the thermal power generating unit and the transmission increment of an extra-high voltage direct current line as decision variables, takes the minimum cross-region system new energy interaction amount and the minimum new energy electricity abandonment of the interactive coefficient as optimization targets, meets the conditions of system operation constraint, thermal power generating unit fixed power generation constraint, thermal power generating unit planned power generation constraint, power grid safety constraint and the like on the basis of an original scheduling plan, optimizes a new energy interactive consumption strategy and promotes the surplus power generation consumption of new energy.
Example 3:
based on the same inventive concept, the present invention further provides a new energy graded interactive consumption system, as shown in fig. 5, the system includes:
the new energy cross-region consumption module based on the dispatching plan is used for analyzing and calculating new energy consumption conditions under the existing sections based on a pre-constructed new energy cross-region consumption model based on the dispatching plan;
the section recombination module is used for dividing and recombining the sections according to the new energy consumption condition under each existing section to obtain an interconnected cross-regional system consisting of a plurality of newly divided sections and section levels, and setting interaction coefficients of each level of sections;
and the new energy interactive consumption module based on the interaction coefficient is used for calculating to obtain a new energy power generation plan under each section with the minimum new energy interaction amount and the minimum new energy electricity abandonment of the interconnection cross-regional system considering the interaction coefficient based on the newly divided various sections, the section levels and the interaction coefficients of the sections, and a transmission plan of each section connecting line in the area and between the areas in the interconnection cross-regional system.
Wherein, the new energy resource cross-region consumption module based on the dispatching plan comprises: the device comprises a first objective function unit, a first constraint condition unit and a consumption analysis unit;
the first objective function unit is used for determining an objective function taking the minimum electric quantity of the new energy abandoned of the trans-regional system as an optimization objective according to the theoretical power generation capacity and the actual output of the new energy unit in the new energy power generation output curve;
the system comprises a first constraint condition unit, a second constraint condition unit and a third constraint condition unit, wherein the first constraint condition unit is used for determining power balance constraint, cross-region system standby constraint, cross-region system operation constraint, cross-region system tie line operation constraint, cross-region system extra-high voltage direct current line operation constraint and cross-region system new energy power generation constraint under each section of a cross-region system according to a thermal power unit operation state, thermal power unit power generation power, an extra-high voltage direct current line transmission plan, cross-region system standby requirement and load node power generation requirement of an objective function taking minimum cross-region system new energy power curtailment as an optimization target;
and the consumption analysis unit is used for solving the new energy cross-region consumption model based on the scheduling plan by adopting a mixed integer programming method to obtain an ideal power generation power curve of the new energy under each section, and analyzing and calculating to obtain the new energy consumption condition under each section based on the ideal power generation power curve of the new energy under each section.
Wherein, the section reorganization module includes: the system comprises an analysis unit, an interconnection cross-regional system establishment unit and an interaction coefficient setting unit;
the analysis unit is used for analyzing the phenomenon of wind abandoning and light abandoning in each section according to the new energy consumption condition under each section;
the interconnection cross-regional system establishing unit is used for fusing adjacent sections with the new energy electricity abandoning phenomenon according to the wind abandoning and light abandoning phenomenon in each section, and establishing an interconnection cross-regional system consisting of a plurality of newly divided sections and section levels by taking the sections with the new energy electricity abandoning phenomenon as a reference;
and the interaction coefficient setting unit is used for setting the higher the level is, the larger the interaction coefficient of the cross section is, and the interaction coefficient of the connecting cross section is smaller than that of the non-connecting cross section according to the multi-level cross sections of the interconnected cross-regional system.
Wherein, the interactive absorption module of new forms of energy based on interactive coefficient includes: the second objective function unit, the second constraint condition unit and the scheduling planning unit;
the second objective function unit is used for determining an objective function taking the minimum new energy interaction amount and the minimum new energy electricity abandon of the cross-regional system considering the interaction coefficient as optimization objectives according to the generated output curve of the new energy generating set in the interconnected cross-regional system, the generated power of the thermal power generating set and the interaction coefficient of the thermal power generating set in each section;
the second constraint condition unit is used for determining power balance constraint under each section of the interconnected cross-region system, backup constraint of each section of the interconnected cross-region system, operation constraint of the thermal power unit under each section of the interconnected cross-region system, operation constraint of a tie line between each section of the interconnected cross-region system, operation constraint of an ultra-high voltage direct current line of each section of the interconnected cross-region system and interactive absorption constraint of new energy of each section of the interconnected cross-region system, wherein the minimum cross-region system new energy interaction amount and the minimum new energy electricity abandonment of an interaction coefficient are taken as an objective function of an optimization target according to the operation state of the thermal power unit, the generated power of the thermal power unit, the transmission plan of the ultra-high voltage direct current line, the standby requirement of the cross-region system and the power generation requirement;
and the scheduling planning unit is used for calculating to obtain a new energy power generation plan under each section of the interconnected cross-regional system and a cross-section tie line conveying plan in and among the interconnected cross-regional system according to the objective function and the related constraint conditions.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (12)
1. A new energy graded interactive consumption method is characterized by comprising the following steps:
according to a pre-constructed new energy cross-regional consumption model based on a scheduling plan, obtaining new energy consumption conditions under each section in the existing cross-regional system;
carrying out section division recombination according to the new energy consumption condition under each existing section to obtain an interconnected cross-regional system consisting of a plurality of newly divided sections and section levels;
and substituting the newly divided various sections and section levels and preset interaction coefficients of the sections into a pre-constructed new energy interaction absorption model based on the interaction coefficients, and calculating to obtain a new energy power generation plan under each section, which enables the interaction amount of the new energy of the interconnection cross-regional system considering the interaction coefficients to be minimum and the electricity discard of the new energy to be minimum, and a transmission plan of each section connecting line in the region and among the regions in the interconnection cross-regional system.
2. The method of claim 1, wherein the obtaining of the new energy consumption under each existing section based on the new energy cross-region consumption model of the dispatching plan comprises:
solving the new energy cross-region consumption model based on the scheduling plan by adopting a mixed integer programming method to obtain an ideal power generation power curve of new energy under each section;
and analyzing and calculating to obtain the new energy consumption condition under each section based on the ideal power generation power curve of the new energy under each section.
3. The method of claim 1, wherein the performing the fracture surface division and recombination according to the new energy consumption under the existing fracture surfaces to obtain an interconnected trans-regional system composed of a plurality of newly divided fracture surfaces and fracture surface levels comprises:
according to the new energy consumption condition under each existing section and by combining the abandoned wind and abandoned light in each section, fusing adjacent sections with the new energy electricity abandoning phenomenon to obtain a plurality of newly divided sections;
and based on the new energy consumption condition of the newly divided multiple sections, dividing the rest sections into interconnected cross-regional systems comprising multiple stages of sections by taking the sections with the new energy electricity abandoning phenomenon as a reference.
4. The method of claim 1, wherein the setting of the interaction coefficients of the respective stages of the cross-sections comprises:
according to the multi-stage sections, the higher the set level is, the larger the section interaction coefficient is, and the connection section interaction coefficient is smaller than the disconnection section interaction coefficient.
5. The method of claim 1, wherein the building of the new energy cross-region consumption model based on the dispatch plan comprises:
according to the operation parameters and the load condition of the existing section new energy unit in the existing cross-regional system, obtaining a new energy power generation output curve, the operation state of a thermal power generating unit, the power generation power of the thermal power generating unit, an extra-high voltage direct-current line transmission plan, a cross-regional system standby demand and a load node power generation demand;
determining a target function taking the minimum electric quantity of the new energy abandoned of the trans-regional system as an optimization target according to the theoretical power generation capacity and the actual output of the new energy unit in the new energy power generation output curve;
and determining power balance constraint, cross-region system standby constraint, cross-region system operation constraint, cross-region system inter-section tie line operation constraint, cross-region system extra-high voltage direct current line operation constraint and cross-region system new energy power generation constraint under each section of the target function according to the thermal power unit operation state, the thermal power unit power generation power, the ultra-high voltage direct current line transmission plan, the cross-region system standby requirement and the load node power generation requirement.
6. The method of claim 1, wherein the building of the new energy interaction digestion model based on the interaction coefficients comprises:
according to the operation parameters and the load conditions of various generator sets on each section in the interconnected cross-regional system, a new energy power generation output curve, the operation state of a thermal power generating set, the power generation power of the thermal power generating set, an extra-high voltage direct current line transmission plan, a cross-regional system standby demand and a load node power generation demand are obtained;
according to the generated output curve of the new energy generating set in the interconnected cross-regional system, the generated power of the thermal power generating set and the interaction coefficient of the thermal power generating set in each section, determining a target function taking the minimum cross-regional system new energy interaction amount and the minimum new energy electricity abandonment of the interaction coefficient as optimization targets;
according to the operation state of the thermal power generating unit, the generating power of the thermal power generating unit, the ultra-high voltage direct current line transmission plan, the cross-region system standby requirement and the load node generating requirement, determining power balance constraint under each section of the interconnected cross-region system, each section standby constraint of the interconnected cross-region system, thermal power generating unit operation constraint under each section of the interconnected cross-region system, tie line operation constraint between each section of the interconnected cross-region system, each section ultra-high voltage direct current line operation constraint of the interconnected cross-region system and each section new energy interactive absorption constraint of the interconnected cross-region system of the objective function.
7. The method of claim 5, wherein the objective function with minimum energy curtailment of the trans-regional system as the optimization objective is shown as follows:
wherein T is the simulation time length of the model, I is the number of the existing sections in the trans-regional system,
the theoretical power generation capacity of the wind field wi in the section i in the time period t,
the theoretical power generation capacity of the photovoltaic power station pi in the section i in the time period t,
the actual output of the wind field wi in the section i in the time period t,
the actual output of the photovoltaic power station Pi in the section i in the time period t is shown, Wi is the number of the wind and light field stations in the section i, and Pi is the number of the photovoltaic power stations in the section i.
8. The method of claim 6, wherein the objective function with the minimum new energy interaction amount and the minimum new energy power curtailment of the cross-region system considering the interaction coefficient as the optimization objective is shown as follows:
wherein J is six types of sections in the interconnected cross-regional system; ij is the number of j type sections in the interconnected cross-regional system; cjIs the interaction coefficient of a thermoelectric generator set in the j-th section in an interconnected cross-regional system, and CjLess than 1;
generating power increment of a section i thermal power generating unit fij in a j-th section in the interconnected cross-regional system in a t period;
generating power increment of a section i wind power plant wij in a j-th section in the interconnected cross-regional system in a t period;
and increasing the generated power of a section i photovoltaic power station pij in a j-th section in the interconnected cross-regional system in a t period.
9. The utility model provides a hierarchical interactive consumption system of new forms of energy which characterized in that includes:
the new energy cross-region consumption module based on the dispatching plan is used for analyzing and calculating new energy consumption conditions under the existing sections based on a pre-constructed new energy cross-region consumption model based on the dispatching plan;
the section recombination module is used for dividing and recombining the sections according to the new energy consumption condition under each existing section to obtain an interconnected cross-regional system consisting of a plurality of newly divided sections and section levels, and setting interaction coefficients of each level of sections;
and the new energy interactive consumption module based on the interaction coefficient is used for calculating to obtain a new energy power generation plan under each section which enables the minimum new energy interaction amount and the minimum new energy electricity abandonment of the interconnection cross-regional system considering the interaction coefficient based on the newly divided various sections, the section levels and the interaction coefficients of the sections, and an intra-regional and inter-regional connecting line conveying plan in the interconnection cross-regional system.
10. The system of claim 9, wherein the dispatch plan-based new energy cross-region consumption module comprises: the device comprises a first objective function unit, a first constraint condition unit and a consumption analysis unit;
the first objective function unit is used for determining an objective function taking the minimum electric quantity of the new energy abandoned of the trans-regional system as an optimization objective according to the theoretical power generation capacity and the actual output of the new energy unit in the new energy power generation output curve;
the first constraint condition unit is used for determining power balance constraint under each section of the trans-regional system, trans-regional system standby constraint, thermal power unit operation constraint under each section of the trans-regional system, tie line operation constraint between each section of the trans-regional system, trans-regional system extra-high voltage direct current line operation constraint and new energy power generation constraint under each section of the trans-regional system, which are objective functions taking minimum new energy electricity abandonment quantity of the trans-regional system as an optimization target, according to the operation state of the thermal power unit, the power generation power of the thermal power unit, the transmission plan of the extra-high voltage direct current line, the trans-regional system standby requirement and the load node power generation requirement;
and the consumption analysis unit is used for solving the new energy cross-region consumption model based on the scheduling plan by adopting a mixed integer programming method to obtain an ideal power generation power curve of the new energy under each section, and analyzing and calculating to obtain the new energy consumption condition under each section based on the ideal power generation power curve of the new energy under each section.
11. The system of claim 9, wherein the profile reorganization module comprises: the system comprises an analysis unit, an interconnection cross-regional system establishment unit and an interaction coefficient setting unit;
the analysis unit is used for analyzing the wind and light abandoning phenomena in each section according to the new energy consumption condition under each existing section;
the interconnection cross-regional system establishing unit is used for fusing adjacent sections with the new energy electricity abandoning phenomenon according to the wind abandoning and light abandoning phenomena in each section, and establishing an interconnection cross-regional system consisting of a plurality of newly divided sections and section levels by taking the sections with the new energy electricity abandoning phenomena as a reference;
the interaction coefficient setting unit is used for setting the higher cross section interaction coefficient of the level according to the multi-level cross sections, and the connection cross section interaction coefficient is smaller than the disconnection cross section interaction coefficient.
12. The system of claim 9, wherein the new energy interaction consumption module based on interaction coefficients comprises: the second objective function unit, the second constraint condition unit and the scheduling planning unit;
the second objective function unit is used for determining an objective function taking the minimum cross-regional system new energy interaction amount and the minimum new energy electricity abandonment of the interaction coefficient as optimization objectives according to the generated output curve of the new energy generating set in the interconnected cross-regional system, the generated power of the thermal power generating set and the interaction coefficient of the thermal power generating set in each section;
the second constraint condition unit is used for determining power balance constraint under each section of the interconnected cross-region system, backup constraint of each section of the interconnected cross-region system, thermal power unit operation constraint under each section of the interconnected cross-region system, tie line operation constraint between each section of the interconnected cross-region system, ultrahigh-voltage direct-current line operation constraint of each section of the interconnected cross-region system and new energy interactive absorption constraint of each section of the interconnected cross-region system, wherein the minimum cross-region system new energy mutual momentum and the minimum new energy electricity discarding of an interaction coefficient are taken as objective functions of an optimization target according to the operation state of the thermal power unit, the thermal power unit generation power of the thermal power unit, the ultrahigh-voltage direct-current line transmission plan, the cross-region system standby requirement and the load node power generation requirement;
and the scheduling planning unit is used for calculating to obtain a new energy power generation plan under each section of the interconnected cross-regional system and an intra-regional and inter-regional tie line delivery plan in the interconnected cross-regional system according to the objective function and the relevant constraint conditions.
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| CN112949892A (en) * | 2020-11-10 | 2021-06-11 | 国电南瑞科技股份有限公司 | Regional power grid new energy power generation consumption optimization method, system, equipment and medium |
| CN114172208A (en) * | 2021-11-29 | 2022-03-11 | 国网山东省电力公司郯城县供电公司 | New energy consumption optimization system based on multi-region interconnection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112949892A (en) * | 2020-11-10 | 2021-06-11 | 国电南瑞科技股份有限公司 | Regional power grid new energy power generation consumption optimization method, system, equipment and medium |
| CN112949892B (en) * | 2020-11-10 | 2022-08-19 | 国电南瑞科技股份有限公司 | Regional power grid new energy power generation absorption decision method, system, equipment and medium |
| CN114172208A (en) * | 2021-11-29 | 2022-03-11 | 国网山东省电力公司郯城县供电公司 | New energy consumption optimization system based on multi-region interconnection |
| CN114172208B (en) * | 2021-11-29 | 2022-08-19 | 国网山东省电力公司郯城县供电公司 | New energy consumption optimization system based on multi-region interconnection |
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