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Method and system for equivalence of feasible region projection

An equivalent method and feasible domain technology, applied in the field of market scheduling of distributed energy systems, can solve the problems of low feasible domain accuracy, low computing efficiency, small operating parameters and cost calculation scale of distributed energy aggregators, etc. The effect of computing efficiency, improving accuracy, and reducing computing scale

Pending Publication Date: 2022-04-12
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Application Information

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Problems solved by technology

[0004] This application provides a feasible region projection equivalent method and system to at least solve the problems of lack of operating parameters and costs of distributed energy aggregators, small calculation scale, low calculation efficiency, and low accuracy of feasible region in related technologies

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  • Method and system for equivalence of feasible region projection
  • Method and system for equivalence of feasible region projection
  • Method and system for equivalence of feasible region projection

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Experimental program
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Embodiment 1

[0030] figure 1 A flow chart of a feasible region projection equivalent method provided by an embodiment of the present disclosure, such as figure 1 As shown, the method includes:

[0031] Step 1: Establish the constraint conditions of the distributed energy aggregator model according to the line parameters and distributed energy types in the area where the distributed energy aggregator is located;

[0032] It should be noted that the constraint conditions of the distributed energy aggregator model established according to the line parameters of the area where the distributed energy aggregator is located and the type of distributed energy include: linearized distribution network power flow equation constraints, node voltage amplitude And phase angle constraints, photovoltaic output constraints, micro gas turbine capacity constraints and ramp constraints, load demand response constraints, aggregator power constraints and node power flow balance constraints.

[0033] The const...

Embodiment 2

[0115] Image 6 A structural diagram of a feasible region projection equivalent system provided for the embodiment of the present disclosure, such as Image 6 As shown, the system includes:

[0116] Building module 100, used to establish the constraints of the distributed energy aggregator model for the line parameters and distributed energy types in the area where the distributed energy aggregator is located;

[0117] The conversion module 200 is used to define the time-domain coupled feasible domain corresponding to the constraints of the distributed energy aggregator model, and then convert the time-domain coupled feasible domain solution problem into an integer linear programming solution problem through dual transformation and large M method;

[0118] An identification module 300, configured to use a parallel umbrella constraint algorithm to filter out redundant constraints among the constraints, and identify effective boundary conditions that play a role in the initial ...

Embodiment 3

[0137] In order to realize the above-mentioned embodiments, the present disclosure also proposes a computer device.

[0138] The computer device provided in this embodiment includes a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the method in Embodiment 1 is implemented.

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Abstract

The invention relates to a feasible region projection equivalence method and system. The method comprises the steps of establishing constraint conditions of a distributed energy aggregator model according to line parameters of a region where a distributed energy aggregator is located and distributed energy types; defining a time domain coupling feasible region corresponding to a constraint condition of the distributed energy aggregator model, and then converting a time domain coupling feasible region solving problem into an integer linear programming solving problem through dual transformation and a large M method; screening and eliminating redundant constraint conditions in the constraint conditions by adopting a parallel umbrella constraint algorithm, and identifying effective boundary conditions which play a role in the initial time domain coupling feasible region; and depicting an extreme point of the dual space of the feasible region by using an external approximation algorithm to obtain a precise time domain coupling feasible region corresponding to the distributed energy aggregator. According to the technical scheme, the calculation scale is reduced, the calculation efficiency is improved, and meanwhile the precision of the feasible region is effectively improved.

Description

technical field [0001] The invention relates to the technical field of market dispatching of distributed energy systems, in particular to a feasible region projection equivalent method and system. Background technique [0002] Facing the challenges of reducing carbon emissions and using fossil energy, the power industry is gradually transforming into a cleaner and decentralized energy structure. Traditional high-carbon, high-pollution fossil energy is gradually being replaced by clean, low-carbon renewable energy. Distributed energy has the advantages of cleanness, cheapness, and flexibility. It can not only reduce the transformation cost of the power system, but also improve the reliability of power supply of the transmission network to participate in the power market through the mode of aggregator agent. Therefore, it has become a global consensus to develop distributed energy to achieve a clean transformation of the power system. [0003] The current problems are as foll...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06Q10/06G06Q50/30G06F111/04
Inventor 王剑晓张天策王新迎蒲天骄李庚银周明
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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