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Power grid operation management method and device based on electricity price prediction

A technology of power grid operation and management methods, which is applied in the direction of circuit devices, constraint-based CAD, and power generation prediction in AC networks, etc., and can solve problems such as limited practical applications, low efficiency, and large amount of calculations

Active Publication Date: 2020-08-07
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the analysis method to reduce the risk of market operation is based on the electricity price prediction method of random probability distribution. Random scenarios are formed through probability sampling of uncertain factors, and then the market operation indicators in all random scenarios are calculated. Although this method can obtain electricity price The expected value of the indicator, but it needs to calculate a large number of scenarios to ensure the accuracy, the calculation is very large, and the practicability is not strong
Therefore, the existing power grid operation management methods are inefficient and limited in practical application

Method used

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  • Power grid operation management method and device based on electricity price prediction
  • Power grid operation management method and device based on electricity price prediction
  • Power grid operation management method and device based on electricity price prediction

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Experimental program
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Embodiment 1

[0091] see figure 1 , is a schematic flowchart of a power grid operation management method based on electricity price prediction provided in Embodiment 1 of the present invention, and the method includes steps S101 to S106.

[0092] S101. Obtain grid operation data.

[0093] Wherein, the power grid operation data includes unit operating cost, unit output, unit load, tie line power, unit start-up and stop status, line power flow transmission data, line power transfer factor, unit ramp rate, and unit shutdown and startup time, but is not limited to this. In this embodiment, the units include thermal power units (specifically, coal-fired power units), gas-fired power units and non-market units (also Class A units).

[0094] S102. Establish a clearing model of the electricity spot market.

[0095] In this embodiment, the power spot market clearing model includes an objective function, system operation constraints and unit operation characteristic constraints. Preferably, the p...

Embodiment 2

[0177] see figure 2 , is a schematic structural diagram of a power grid operation management device based on electricity price prediction provided by Embodiment 2 of the present invention. It can be understood that the embodiment of the device item of the present invention corresponds to the embodiment of the method item of the present invention, which can implement the present invention The power grid operation management method based on electricity price prediction described in any one of the above methods or embodiments. The devices include:

[0178] A data acquisition module 201, configured to acquire grid operation data;

[0179] Model construction module 202, used to establish a power spot market clearing model;

[0180] The uncertainty factor analysis module 203 is used to determine the uncertainty factors in the grid operation process; wherein, the uncertainty factors include the uncertainty of load, the uncertainty of renewable energy, and the uncertainty of extern...

Embodiment 3

[0250] The power grid operation management terminal device based on electricity price prediction in Embodiment 3 includes: a processor, a memory, and a computer program stored in the memory and operable on the processor, such as a power grid operation management program. When the processor executes the computer program, the steps in the above embodiments of the grid operation management method based on electricity price prediction are realized. Alternatively, when the processor executes the computer program, the functions of the modules / units in the above device embodiments are realized.

[0251] Exemplarily, the computer program may be divided into one or more modules / units, and the one or more modules / units are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe ...

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Abstract

The invention discloses a power grid operation management method based on electricity price prediction. The method comprises the steps of obtaining power grid operation data; establishing an electricpower spot market clearing model; determining uncertainty factors in the operation process of the power grid, wherein the uncertainty factors comprise uncertainty of a load, uncertainty of renewable energy sources, uncertainty of external electricity and uncertainty of market subject quotation; identifying an extreme scene in which the uncertainty factors influence clearing of the spot market model; inputting the power grid operation data into the electric power spot market clearing model based on the extreme scene, and performing clearing calculation to obtain a node electricity price changeinterval; and managing the power grid according to the node electricity price change interval. According to the method, the electricity price prediction of the electricity market can be accurately analyzed, the calculation complexity is greatly reduced, the electricity market and the power grid are reasonably managed by calculating the node electricity price change interval, and the safe and stable operation of the power grid is ensured. The invention further discloses a power grid operation management device based on electricity price prediction.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a power grid operation management method and device based on electricity price prediction. Background technique [0002] In the actual operation of the power grid, there are some uncertain factors, which will bring fluctuations to the electricity price in the power market, and the fluctuations will cause potential operational risks in the power grid. Therefore, electricity market pricing can help to rationally allocate the grid operation structure, so as to realize the safe and stable operation of the grid. [0003] In the traditional electricity price forecast analysis, usually only the electricity price situation in the expected scenario is analyzed, and the error scenarios that may occur in other power grid operations are ignored. This incomplete analysis method will make the market operation face this unpredictable risk. At present, the analysis method to reduce the ri...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/06H02J3/46G06Q30/02G06F30/20G06F113/04
CPCH02J3/008H02J3/0075H02J3/003H02J3/004H02J3/06H02J3/466G06Q30/0206G06F30/20H02J2300/20H02J2300/22H02J2300/28H02J2300/10H02J2300/40H02J2203/20H02J2203/10G06F2111/04G06F2113/04Y04S50/14
Inventor 禤培正
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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