CN117913841A - Park-level flexible load regulation and participation power grid interactive response system - Google Patents
Park-level flexible load regulation and participation power grid interactive response system Download PDFInfo
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Abstract
The invention provides a park-level flexible load regulation participation power grid interactive response system, which relates to the technical field of park load regulation and comprises an energy collection system, a coordination system and a park energy coordination system, wherein a wind power integrated management system and a photovoltaic power integrated management system are transmitted on one side of the energy collection system, the wind power integrated management system and the wind power generation system are transmitted in a bidirectional manner, and the photovoltaic power integrated management system and the photovoltaic power generation system are transmitted in a bidirectional manner.
Description
Technical Field
The invention relates to the technical field of garden load regulation, in particular to a garden-level flexible load regulation participation power grid interactive response system.
Background
The industrial park is a comprehensive energy system for gathering various energy production and energy utilization main bodies, and has the problems of large load demand, complex energy utilization structure, low energy utilization rate, unreasonable energy structure and the like. Along with the expansion of production scale in the industrial park, the power supply pressure in the load peak period in the park is further increased, and the power supply reliability in the park can be enhanced by the effective peak clipping means. In addition, when the load peak period of the large power grid comes, the industrial park can participate in peak clipping of the external power grid, so that the safe and reliable operation of the power grid is facilitated. The integrated energy system of the industrial park is subjected to interactive optimization, so that on one hand, the demand response potential of each participating main body in the park can be mined, benign interaction between a user and a power grid is enhanced, and on the other hand, better integrated energy supply service can be provided for the user. The interaction means that when the power supply pressure of the park is high, the user side resource can autonomously, directly or indirectly reduce the power load, reduce the power supply pressure of the power grid, and meanwhile, the user obtains corresponding compensation.
At present, in the existing industrial park, the electric energy self-regulation in the industrial park is only relied on to realize when the demand response and interaction are carried out, when the outsourcing electric load is too high, the electricity price can be increased stepwise, the industrial park is not suitable for long-term production, meanwhile, the existing high energy consumption load mainly participates in auxiliary services with single functions of frequency modulation, peak shaving and the like, and other methods are not considered to flexibly regulate the load of the electricity consumption of the whole park.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a park-level flexible load regulation participation power grid interactive response system, which solves the defects of the prior art. The invention realizes the aim by the following technical scheme: the park-level flexible load regulation participation power grid interactive response system is characterized in that:
the system comprises an energy collection system, a coordination system and a park energy coordination system:
The system comprises an energy collection system, a wind power integrated management system, a photovoltaic power generation system and a photovoltaic power generation system, wherein the wind power integrated management system and the photovoltaic power integrated management system are transmitted on one side of the energy collection system in a bidirectional manner;
The wind power integrated management system and the photovoltaic integrated management system comprise an energy production unit, an energy conversion unit and an energy storage unit;
The wind power generation system adopts a fan, the wind power generation system is not directly converted into electric energy from wind energy, and mechanical energy is needed in the middle, so that the wind power generation system has the function of converting continuously-changed wind energy into alternating current with constant frequency and constant voltage or direct current with constant voltage;
the photovoltaic power generation system comprises a solar cell matrix, an alternating current power distribution cabinet, a storage battery pack, an inverter, a charge-discharge controller and a solar tracking control system;
An energy production unit: the system is used for analyzing and responding to climate change, energy demand fluctuation, equipment performance and market dynamics in real time, and realizing adjustment of energy production, distribution and storage strategies;
An energy conversion unit: the wind driven generator converts mechanical energy into electric energy, and the photovoltaic power generation system converts solar energy into electric energy;
Energy storage unit: the energy storage unit has at least one energy store with at least one positive coupling and at least one negative coupling;
The energy storage unit adopts a high-density lithium ion battery and a solid hydrogen storage battery and is used for realizing high-efficiency and stable energy storage and quick response capacity;
the energy storage unit also comprises a thermal management system for optimizing the working temperatures of the battery and the hydrogen storage unit, and improving the performance and the service life of the battery and the hydrogen storage unit;
The energy storage unit also comprises a battery management system for monitoring the battery state in real time, including the charge and discharge state, the health condition and the temperature, so as to ensure the safety and the efficiency.
Preferably, the wind power integrated management system and the photovoltaic integrated management system are both provided with an energy collection system in a transmission way on one side.
Preferably, the system in the energy collection system mainly comprises three types of rights: personnel users, equipment users and user groups, wherein the personnel users are registered users of the system and are responsible for creating and maintaining system components, such as databases, forms, equipment users, user groups and others, the equipment users define energy equipment connected in the system, the system is automatically connected without providing verification information, the user groups define related personnel users and equipment users, the authority operation of the user groups can be simultaneously issued to all personnel users and equipment users included in the system, and a composite prediction model and a corresponding machine learning algorithm are arranged in the energy aggregation system.
The composite prediction model is used for accurately predicting short-term and long-term energy demand changes by combining time sequence analysis, climate mode and market dynamic analysis;
And the machine learning algorithm is used for automatically adjusting the energy distribution strategy, optimizing the cost benefit and the energy efficiency, and continuously improving the prediction accuracy and the decision efficiency according to the historical data and the real-time feedback.
Preferably, the electric energy produced by the wind power generation system and the photovoltaic power generation system is transmitted to the energy collection system for distribution through the wind power integrated management system and the photovoltaic power integrated management system respectively.
Preferably, the energy collection system is connected with an energy source reserving system and an energy source selling system on one side, and the energy source reserving system is used for distributing part of electric energy to weak electric equipment of a factory.
Preferably, the energy collection system distributes the electric energy produced by wind power generation and photovoltaic power generation to the energy source reserving system and the energy selling system.
Preferably, the top end of the coordination system and the power grid system are in bidirectional transmission, and the bottom end of the coordination system and the industrial park transaction system are in bidirectional transmission.
Preferably, the power grid system comprises a power transmission system and a power receiving system, and the industrial park transaction system comprises an external power receiving system and a self-sales system.
Preferably, one side of the park energy coordination control system is connected with the park electricity load monitoring end, and the other single side of the park energy coordination control system is bidirectionally transmitted with the power grid electric energy distribution system and the self-generated electric energy distribution system.
Preferably, the energy storage unit further comprises:
The multi-mode temperature control system is used for automatically adjusting the temperature according to the environmental conditions and the storage requirements, optimizing the storage efficiency and prolonging the service life of the storage medium;
The multi-mode temperature control system further comprises a remote monitoring and diagnosis module which is used for tracking the performance and the safety state of the storage unit in real time, supporting remote fault elimination and maintenance planning, dissipating heat of the storage unit in real time and ensuring efficient storage of the storage unit.
The invention provides a park-level flexible load adjustment system for participating in power grid interaction. The beneficial effects are as follows: the system in the energy collection system mainly comprises three types of rights: personnel users, equipment users and user groups, wherein the personnel users are registered users of the system and are responsible for creating and maintaining system components, such as databases, forms, equipment users, user groups and others, the equipment users define energy equipment connected in the system, the system is automatically connected without providing verification information, the user groups define related personnel users and equipment users, authority operation of the user groups can be simultaneously issued to all personnel users and equipment users included in the system, a composite prediction model and a corresponding machine learning algorithm are arranged in an energy collection system, the system automatically adjusts energy distribution strategies, optimizes cost benefits and energy efficiency, and continuously improves prediction accuracy and decision efficiency according to historical data and real-time feedback.
The invention adopts a particle algorithm to solve the model to obtain Nash equilibrium points of the model, which are as follows: when the particle swarm optimization is utilized to convert, a mathematical model of comprehensive energy system equipment and a system optimization scheduling model are established, load, energy price and equipment parameters are directly input, and the model is solved by adopting a particle swarm algorithm to obtain Nash equilibrium points: optimum electricity prices and optimum power demand. Firstly initializing population and speed, then calculating the self-adaptive degree value of each particle, and finding out individual extremum and population extremum; updating the particle group velocity and the individuals, comparing the individual extremum and the population extremum with the extremum before updating after calculating the fitness value, and updating the individual extremum and the population extremum until the maximum iteration number is reached, and outputting an optimal solution.
When the power generation amount of the park comprehensive energy system is insufficient or uneconomical, the power is supplied by an external power grid power supply company, so that the requirement of the park comprehensive energy system is met; secondly, when the power grid needs to adjust the load, the power grid power supply company sends the demand response information to the park comprehensive energy system, and the park comprehensive energy system uniformly coordinates to complete the demand response requirements.
According to the invention, the self-produced electric energy of the industrial park can be transmitted to the electricity receiving system in the power grid system through the self-produced selling system, the power grid system can convert the transmitted electric quantity and the received electric quantity, the electric price is converted through the intelligent calculator, and the coordination system can transmit the converted electric price to the power grid company and the industrial park respectively, so that the two are convenient to trade.
The park energy coordination control system is used for adjusting distribution of electric energy purchased by a power grid and self-produced electric energy in the park, the park electricity load monitoring end monitors the electricity load of the park, when the electricity load is too high, the electricity cost is high, and the park energy coordination control system controls the self-energy expansion ratio intervention so as to adjust the electricity purchase load.
The invention uses the self-generated electric energy together with the purchased electric energy, reduces the electric energy purchasing quantity of the electric network when the electric network transmission electric energy load is too high, improves the use quantity of the self-generated electric energy, avoids the peak, and can sell part of redundant stored electric energy to the electric network when the peak is low so as to reduce the electricity purchasing cost, the self-generated electricity of the whole park can be used for weak electric equipment, the purchased electricity can be used for strong electric equipment, and the electricity consumption load is indirectly adjusted.
Drawings
FIG. 1 is a flow chart of an energy harvesting system of the present invention;
FIG. 2 is a flow chart of a coordination system of the present invention;
FIG. 3 is a flow chart of the campus energy coordination control system of the present invention;
fig. 4 is a flow chart of a scheduling method of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The park level flexibly adjusts the load to participate in the interactive response system of the power grid,
The system comprises an energy collection system, a coordination system and a park energy coordination system:
The wind power integrated management system and the photovoltaic power integrated management system are transmitted on one side of the energy collection system, the wind power integrated management system and the wind power generation system are transmitted in a bidirectional manner, and the photovoltaic power integrated management system and the photovoltaic power generation system are transmitted in a bidirectional manner;
The wind power integrated management system and the photovoltaic integrated management system comprise an energy production unit, an energy conversion unit and an energy storage unit;
The wind power generation system adopts a fan, the wind power generation system is not directly converted into electric energy from wind energy, mechanical energy is needed in the middle, and the wind power generation system has the function of converting continuously-changed wind energy into alternating current with constant frequency and constant voltage or direct current with constant voltage;
The photovoltaic power generation system comprises a solar cell array, an alternating current power distribution cabinet, a storage battery pack, an inverter, a charge-discharge controller and a solar tracking control system;
An energy production unit: the system is used for analyzing and responding to climate change, energy demand fluctuation, equipment performance and market dynamics in real time, and realizing adjustment of energy production, distribution and storage strategies;
An energy conversion unit: the wind driven generator converts mechanical energy into electric energy, and the photovoltaic power generation system converts solar energy into electric energy;
Energy storage unit: the energy storage unit has at least one energy store with at least one positive coupling and at least one negative coupling;
The energy storage unit adopts a high-density lithium ion battery and a solid hydrogen storage battery and is used for realizing high-efficiency and stable energy storage and quick response capacity;
The energy storage unit also comprises a thermal management system for optimizing the working temperatures of the battery and the hydrogen storage unit, and improving the performance and the service life of the battery and the hydrogen storage unit;
The energy storage unit also comprises a battery management system for monitoring the battery state in real time, including the charge and discharge state, the health condition and the temperature, so as to ensure the safety and the efficiency.
And the wind power integrated management system and the photovoltaic integrated management system are both provided with an energy collection system in a transmission way on one side.
The system in the energy collection system mainly comprises three types of rights: the system comprises personnel users, equipment users and user groups, wherein the personnel users are registered users of the system and are responsible for creating and maintaining system components, such as databases, forms, equipment users, user groups and others, the equipment users define energy equipment connected in the system, the system is automatically connected without providing verification information, the user groups define related personnel users and equipment users, the authority operation of the user groups can be simultaneously issued to all personnel users and equipment users included in the system, and a composite prediction model and a corresponding machine learning algorithm are arranged in an energy collection system.
The composite prediction model is used for accurately predicting short-term and long-term energy demand changes by combining time sequence analysis, climate mode and market dynamic analysis;
And the machine learning algorithm is used for automatically adjusting the energy distribution strategy, optimizing the cost benefit and the energy efficiency, and continuously improving the prediction accuracy and the decision efficiency according to the historical data and the real-time feedback.
The electric energy produced by the wind power generation system and the photovoltaic power generation system is transmitted to the energy collection system for distribution through the wind power integrated management system and the photovoltaic power integrated management system respectively.
The energy collection system is connected with an energy source reserving system and an energy selling system at one side, and the energy source reserving system is used for distributing part of electric energy to weak electric equipment of a factory.
The energy collection system distributes the electric energy produced by wind power generation and photovoltaic power generation to the energy source reserving system and the energy selling system.
The top end of the coordination system and the power grid system are in bidirectional transmission, and the bottom end of the coordination system and the industrial park transaction system are in bidirectional transmission.
The power grid system comprises a power transmission system and a power receiving system, and the industrial park transaction system comprises an external power receiving system and a self-sales system.
And one side of the park energy coordination control system is connected with the park electricity load monitoring end, and the other single side of the park energy coordination control system is used for bidirectionally transmitting the electric power distribution system and the self-generating electric power distribution system.
The energy storage unit further comprises the following parts:
The multi-mode temperature control system is used for automatically adjusting the temperature according to the environmental conditions and the storage requirements, optimizing the storage efficiency and prolonging the service life of the storage medium;
The multi-mode temperature control system also comprises a remote monitoring and diagnosis module which is used for tracking the performance and the safety state of the storage unit in real time, supporting remote fault elimination and maintenance planning, dissipating heat of the storage unit in real time and ensuring efficient storage of the storage unit.
Example 2
In the park, the whole park can be divided into an energy selling park and an energy purchasing park, the park can sell self-produced electric energy to a power grid company for reducing the cost of electricity purchasing, meanwhile, the energy selling park and the energy purchasing park are respectively given out trading strategies and decision variables, the energy selling park and a plurality of energy purchasing parks are used as game participants, an energy selling park model and an energy purchasing park model are respectively constructed under the constraint condition of considering the importance degree, the trade price, the trade distance, the energy supply quality, the energy storage constraint and the capacity uncertainty of the energy purchasing park, finally, a master-slave game model is constructed, and meanwhile, a particle algorithm is adopted for solving the model to obtain the nano equilibrium point of the model, wherein: when the particle swarm optimization is utilized to convert, a mathematical model of comprehensive energy system equipment and a system optimization scheduling model are established, load, energy price and equipment parameters are directly input, and the model is solved by adopting a particle swarm algorithm to obtain Nash equilibrium points: optimum electricity prices and optimum power demand. Firstly initializing population and speed, then calculating the self-adaptive degree value of each particle, and finding out individual extremum and population extremum; updating the particle group velocity and the individuals, comparing the individual extremum and the population extremum with the extremum before updating after calculating the fitness value, and updating the individual extremum and the population extremum until the maximum iteration number is reached, and outputting an optimal solution.
When the electricity generated by the park comprehensive energy system is insufficient or uneconomical, the power is supplied by an external power grid power supply company, so that the requirement of the park comprehensive energy system is met; secondly, when the power grid needs to adjust the load, the power grid power supply company sends the demand response information to the park comprehensive energy system, and the park comprehensive energy system uniformly coordinates to complete the demand response requirements.
Example 3
In the system, the energy collection system stores and collects self-produced electric energy of a park, the second half of the self-produced electric energy is stored to the energy reserving system for distribution, the other half of the self-produced electric energy is stored to the energy selling system, the energy selling system transmits new energy to the industrial park transaction system, the electric network system and the industrial park transaction system are in bidirectional transmission through the coordination system, the electric network system transmits electric energy purchased by the park to the external electricity receiving system through the power transmission system, commercial power received by the external electricity receiving system is applied to equipment needing strong electricity, the self-produced electric energy of the industrial park is transmitted to the power receiving system in the electric network system through the self-produced selling system, the electric network system converts the transmitted electric quantity and the received electric quantity, the coordination system converts the electric price through the intelligent calculator, and the coordination system transmits the converted electric price to the electric network company and the industrial park respectively, so that the two trade is facilitated.
The park energy coordination control system is used for adjusting distribution of electric energy purchased by a power grid and self-produced electric energy in a park, a park electricity load monitoring end can monitor electricity loads of the park, when the electricity loads are too high, electricity cost becomes high, and at the moment, the park energy coordination control system can control self-energy expansion ratio intervention so as to adjust electricity purchasing loads.
Example 4
Building a conventional generator set, a distributed power supply, an energy storage and other equipment output model and a cost model, building a park comprehensive energy system group and power grid collaborative optimization control framework, and building a layered decomposition optimization model to realize the coordinated control of the power grid and the park comprehensive energy system group: the upper layer is regional coordination control of a power grid and a park operator, the lower layer is regional coordination control of a park comprehensive energy system group, the power grid side model takes the electric energy interactive cost between the power grid and the park and the power generation cost of a conventional unit at the power grid side as a profit function to determine the output of the park group; the park comprehensive energy system group model uses the running cost as an optimized benefit function to decide the output of each distributed energy source and other equipment in each park.
The main functions of the park comprehensive energy system are as follows: the first aspect is responsible for powering all industrial users in the campus, enabling the factory users to perform production activities normally, thereby obtaining benefits; on the other hand, after the comprehensive energy system receives the demand response signal sent by the external power grid company, the demand response information is sent to each factory in the park, whether to participate in the demand response is determined by the factory, and then the factories collect the information of the factories participating in the demand response to obtain the specific arrangement of the demand response, so that a certain benefit is obtained in the process.
And each park combines with the production plan of the park, selects an electric and thermal load model and a profit function, reports translatable load to the power grid side on the basis of ensuring the maximization of the benefit of the park, reduces the load and changes the load.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The park-level flexible load regulation participation power grid interactive response system is characterized in that:
the system comprises an energy collection system, a coordination system and a park energy coordination system:
The system comprises an energy collection system, a wind power integrated management system, a photovoltaic power generation system and a photovoltaic power generation system, wherein the wind power integrated management system and the photovoltaic power integrated management system are transmitted on one side of the energy collection system in a bidirectional manner;
The wind power integrated management system and the photovoltaic integrated management system comprise an energy production unit, an energy conversion unit and an energy storage unit;
The wind power generation system adopts a fan, the wind power generation system is not directly converted into electric energy from wind energy, and mechanical energy is needed in the middle, so that the wind power generation system has the function of converting continuously-changed wind energy into alternating current with constant frequency and constant voltage or direct current with constant voltage;
the photovoltaic power generation system comprises a solar cell matrix, an alternating current power distribution cabinet, a storage battery pack, an inverter, a charge-discharge controller and a solar tracking control system;
An energy production unit: the system is used for analyzing and responding to climate change, energy demand fluctuation, equipment performance and market dynamics in real time, and realizing adjustment of energy production, distribution and storage strategies;
An energy conversion unit: the wind driven generator converts mechanical energy into electric energy, and the photovoltaic power generation system converts solar energy into electric energy;
Energy storage unit: the energy storage unit is provided with an energy accumulator, wherein the energy accumulator is provided with a positive connection part and a negative connection part;
The energy storage unit adopts a high-density lithium ion battery and a solid hydrogen storage battery and is used for realizing high-efficiency and stable energy storage and quick response capacity;
the energy storage unit also comprises a thermal management system for optimizing the working temperatures of the battery and the hydrogen storage unit, and improving the performance and the service life of the battery and the hydrogen storage unit;
The energy storage unit also comprises a battery management system for monitoring the battery state in real time, including the charge and discharge state, the health condition and the temperature, so as to ensure the safety and the efficiency.
2. The campus-level flexible regulation load participation grid interactive response system of claim 1, wherein: and the energy collection systems are transmitted to one side of the wind power integrated management system and one side of the photovoltaic integrated management system.
3. The campus-level flexible regulation load participation grid interactive response system of claim 2, wherein: the system in the energy collection system mainly comprises three types of rights: the system comprises personnel users, equipment users and user groups, wherein the personnel users are registered users of the system and are responsible for creating and maintaining system components, such as databases, forms, equipment users, user groups and others, the equipment users define energy equipment connected in the system and have the function of automatically connecting the system without providing verification information, the user groups define related personnel users and equipment users, the authority operation of the user groups can be simultaneously issued to all personnel users and equipment users included in the system, and a composite prediction model and a corresponding machine learning algorithm are arranged in the energy aggregation system; the composite prediction model is used for accurately predicting short-term and long-term energy demand changes by combining time sequence analysis, climate mode and market dynamic analysis; and the machine learning algorithm is used for automatically adjusting the energy distribution strategy, optimizing the cost benefit and the energy efficiency, and continuously improving the prediction accuracy and the decision efficiency according to the historical data and the real-time feedback.
4. A campus-level flexible regulation load participation grid interactive response system according to claim 3, wherein: the electric energy produced by the wind power generation system and the photovoltaic power generation system is transmitted to the energy collection system for distribution through the wind power integrated management system and the photovoltaic power integrated management system respectively.
5. The campus-level flexible regulation load participation grid interactive response system of claim 4, wherein: the energy collection system is connected with an energy source reserving system and an energy selling system at one side, and the energy source reserving system is used for conveying part of electric energy to weak electric equipment of a factory.
6. The campus-level flexible regulation load participation grid interactive response system of claim 5, wherein: the energy collection system distributes the electric energy produced by wind power generation and photovoltaic power generation to the energy source reserving system and the energy selling system.
7. The campus level flexible regulation load participation grid interactive response system of claim 1, wherein the top end of the coordination system is bi-directionally transmitted with the grid system, and the bottom end of the coordination system is bi-directionally transmitted with the industrial campus trading system.
8. The campus-level flexible regulation load participation grid interactive response system of claim 7, wherein: the power grid system comprises a power transmission system and a power receiving system, and the industrial park transaction system comprises an external power receiving system and a self-output selling system.
9. The campus-level flexible regulation load participation grid interactive response system of claim 1, wherein: the single side of the park energy coordination control system is connected with the park electricity load monitoring end, and the other single side of the park energy coordination control system is provided with a power grid electric energy distribution system and a self-generating electric energy distribution system in a bidirectional transmission mode.
10. The campus-level flexible regulation load participation grid interactive response system of claim 1, wherein: the energy storage unit further comprises the following parts:
The multi-mode temperature control system is used for automatically adjusting the temperature according to the environmental conditions and the storage requirements, optimizing the storage efficiency and prolonging the service life of the storage medium;
The multi-mode temperature control system further comprises a remote monitoring and diagnosis module which is used for tracking the performance and the safety state of the storage unit in real time, supporting remote fault elimination and maintenance planning, dissipating heat of the storage unit in real time and ensuring efficient storage of the storage unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410309777.XA CN117913841B (en) | 2024-03-19 | Park-level flexible load regulation and participation power grid interactive response system |
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| CN202410309777.XA CN117913841B (en) | 2024-03-19 | Park-level flexible load regulation and participation power grid interactive response system |
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| CN117913841A true CN117913841A (en) | 2024-04-19 |
| CN117913841B CN117913841B (en) | 2024-07-05 |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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