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Optimization method for providing multi-market and local services for multi-energy virtual power plant

A technology of local services, virtual power plants, applied in the direction of AC networks with the same frequency from different sources, AC networks with energy trade/energy transmission rights, electrical components, etc.

Active Publication Date: 2021-03-19
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this puts higher requirements on the dispatching ability of the virtual power plant

Method used

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  • Optimization method for providing multi-market and local services for multi-energy virtual power plant
  • Optimization method for providing multi-market and local services for multi-energy virtual power plant
  • Optimization method for providing multi-market and local services for multi-energy virtual power plant

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with the accompanying drawings.

[0056] figure 1 Shown is an optimization method for a multi-energy virtual power plant to provide multi-market and local services, based on multi-market and local service scenarios and a rolling optimization model to solve the uncertainty problem. Each step will be described in detail below.

[0057] Step 1: First-level optimization, using linearization technology to convert nonlinear and non-convex problems into mixed integer linear programming problems, based on VPP multi-market and local service scenarios, real-time information is used for rolling optimization every 24 hours.

[0058] (1-1) Analysis of the cost function of the optimization problem

[0059] The cost function of the first-level optimization problem is shown in the figure below:

[0060]

[0061] It is based on the cost of each scenario considered, the probability of each scenario occurring in th...

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Abstract

The invention discloses an optimization method for providing multi-market and local services for a multi-energy virtual power plant, and belongs to the technical field of power demand response. The method mainly comprises the following steps: (1) primary optimization: converting nonlinear and non-convex problems into a mixed integer linear programming problem by using a linearization technology, and carrying out rolling optimization by using real-time information every 24 hours based on a scene; (2) secondary optimization: taking 24 hours as a period, and using real-time information to roll and optimize once again every 30 minutes based on the scene; and (3) three-stage optimization: performing rolling optimization every 5 minutes by adopting second-order cone (SOC) convex relaxation withthe period of 30 minutes based on an optimal power flow (OFP) equation. The litigation method is based on multiple market and local service scenes and a rolling optimization model, modeling is carriedout on the VPP under the condition that uncertainty is considered, local network constraints are relieved through an optimized result, and reactive power support is provided for a power grid.

Description

technical field [0001] The invention discloses an optimization method for providing multi-market and local services by a multi-energy virtual power plant, and solves the uncertainty problem based on a VPP multi-market and local service scene and a rolling optimization model. The invention belongs to the technical field of power demand response. Background technique [0002] In recent years, there has been increasing integration of distributed energy resources (DERs), as well as an increase in renewable energy generation. Many of the DERs currently incorporated into the distribution grid are too small to participate in the electricity market and thus represent unregulated generation. If not properly controlled, these DERs can cause voltage and power flow issues and be underutilized due to network strain. An emerging method of DER aggregation that enables them to participate in electricity markets is through virtual power plants (VPPs). Through the control and coordination ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/18H02J3/06
CPCH02J3/00H02J3/18H02J3/06H02J3/008H02J2203/20Y02E40/30
Inventor 赵建立郑庆荣盛明高志刚汤卓凡陆颖杰张娟郭雁王静
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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