Node marginal electricity price calculation method and device based on network loss

A calculation method and network loss technology, applied in the field of node marginal electricity price calculation method and device based on network loss, can solve the problems of increasing system network loss and not considering the impact of system network loss, so as to reduce power purchase cost and facilitate The effect of optimizing calculation

Pending Publication Date: 2020-08-28
广东电力交易中心有限责任公司 +1
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Problems solved by technology

[0003] This application provides a node marginal electricity price calculation method and device based on network loss, which is used to solve the problem that the existing node marginal electricity price mechanism does not consider the influence of system network loss, so that the system network loss increases while reducing the system power purchase cost technical problem

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  • Node marginal electricity price calculation method and device based on network loss
  • Node marginal electricity price calculation method and device based on network loss
  • Node marginal electricity price calculation method and device based on network loss

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Embodiment 1

[0047] For ease of understanding, see figure 1 , Embodiment 1 of a node marginal electricity price calculation method based on network loss provided by the present application, including:

[0048] Step 101: Optimizing the preset economic dispatch model through preset weights.

[0049] It should be noted that the economic dispatch of the power system refers to a dispatch method that uses energy and equipment reasonably to ensure reliable power supply to users with the lowest power generation cost or fuel cost on the premise of satisfying safety and power quality. The model is to consider various factors, establish a reasonable scheduling model, improve the efficiency of power supply to users, and ensure the benefits of power suppliers. The preset weight is artificially set, and is mainly used to optimize the power purchase cost and system network loss in the economic dispatch model. Generally, the lower the power purchase cost and the system network loss, the better, but it is...

Embodiment 2

[0059] For ease of understanding, see figure 2 , the embodiment of the present application provides a second embodiment of a node marginal electricity price calculation method based on network loss, including:

[0060] Step 201: Optimizing the impact of power purchase cost and system network loss on the preset economic dispatch model according to the preset optimization formula.

[0061] It should be noted that the economic dispatch of the power system refers to a dispatch method that uses energy and equipment reasonably to ensure reliable power supply to users with the lowest power generation cost or fuel cost under the premise of satisfying safety and power quality. The model is to consider various factors, establish a reasonable scheduling model, improve the efficiency of power supply to users, and ensure the benefits of power suppliers. The preset weights are artificially set, and are mainly used to optimize the power purchase cost and system network loss in the economic...

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Abstract

The invention discloses a node marginal electricity price calculation method and device based on network loss. The node marginal electricity price calculation method comprises the following steps: optimizing a preset economic dispatching model through a preset weight; constructing a first constraint condition of the optimized preset economic dispatching model, wherein the first constraint condition comprises a node power balance constraint, a generator set output constraint, a direct current power flow relationship constraint and a network transmission capability constraint; establishing a second constraint condition between the power transmission line power flow and the network loss, wherein the second constraint condition meets quadratic term constraints; converting the optimized preseteconomic dispatching model, the first constraint condition and the second constraint condition into a model Lagrange function; and calculating the marginal electricity price of the node according to the model Lagrange function and the original economic dispatch power flow. According to the node marginal electricity price calculation method, the technical problem that the system network loss is increased while the system electricity purchasing cost is reduced because the influence of the system network loss is not considered in the existing node marginal electricity price mechanism is solved.

Description

technical field [0001] The present application relates to the technical field of electric power market and dispatching operation, in particular to a method and device for calculating node marginal electricity price based on network loss. Background technique [0002] Node marginal price is an important price mechanism in the electricity spot market. Compared with the unified clearing model, the node marginal electricity price fully considers the difference in electricity prices of different nodes in space caused by the transmission capacity of the grid, and can reflect the impact on the entire network's electricity purchase cost when the node load fluctuates. Therefore, the node marginal electricity price It has been widely used in the power market. However, the traditional node marginal electricity price does not take into account the difference of the network loss of the system, which may easily cause the problem of increasing the network loss of the system while reducing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06G06F30/20G06F113/04G06F111/04
CPCG06Q50/06G06F30/20G06F2113/04G06F2111/04
Inventor 向德军周睿黄康乾胡鑫黄靖茵郑伟陈灏蔡嘉荣陈非占力超
Owner 广东电力交易中心有限责任公司
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