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A method for controlling power purchases by electricity sales companies in an environment where distribution and sales are separated

A control method and power purchase technology, applied in the power field of the power system, can solve the problems that affect the power purchase of the power sales company, the uncertainty of the power consumption of the next day users, etc., and achieve the effect of improving the total social benefit and increasing the linkage effect.

Inactive Publication Date: 2021-07-09
TIANJIN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the stage of full marketization, electricity retail companies have the right to independently determine retail electricity prices, and the electricity consumption of power users within the scope of their services will be affected by retail electricity prices, which in turn will affect the electricity retail companies that need to trade in the day-ahead trading market. electricity purchase in
Due to factors such as the spot market electricity price and the uncertainty of the next day's electricity consumption, the traditional electricity purchase decision-making method of electricity retail companies faces certain risks.

Method used

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  • A method for controlling power purchases by electricity sales companies in an environment where distribution and sales are separated
  • A method for controlling power purchases by electricity sales companies in an environment where distribution and sales are separated
  • A method for controlling power purchases by electricity sales companies in an environment where distribution and sales are separated

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Embodiment 1

[0042] A method for controlling electricity purchases by electricity sales companies in an environment where distribution and sales are separated, see figure 1 and figure 2 , the method includes the following steps:

[0043] 101: Establish a three-tier electricity purchase and sale service structure of grid company-electricity sales company-user according to the electricity sales company Agent and the user Agent;

[0044] 102: Based on the three-tier electricity purchase and sale service architecture, build a user electricity elasticity model consisting of uncontrollable load, transferable load, and variable load;

[0045] 103: Based on the electricity price elasticity model of users and the operation and evaluation parameters of electricity sales companies, establish a power purchase control model for electricity sales companies. Stability constraints, purchase and sale of electricity balance constraints.

[0046]Furthermore, the agent of the power sales company is used t...

Embodiment 2

[0054] Combine below figure 1 , figure 2 , calculation formula, and example are further introduced to the scheme in embodiment 1, see the following description for details:

[0055] 201: Electricity sales company purchase and sale service structure and Agent settings;

[0056] In the embodiment of the present invention, based on the three-layer framework of "grid company-electricity sales company-user", including the electricity sales company Agent and the user Agent, the specific functions to be implemented are as follows:

[0057] 1. Agent of electricity sales company, including:

[0058] a) Interact with the information platform of the power grid company to obtain the current operating status of the power grid and the wholesale electricity price information of the power grid company;

[0059] b) Responsible for publishing retail electricity price information to the lower-level Agent, and accepting the load information fed back by the lower-level Agent;

[0060] c) Afte...

Embodiment 3

[0143] The scheme in embodiment 1 and 2 is carried out feasibility verification below in conjunction with specific example, see the following description for details:

[0144] Forecast electricity prices in the spot market of power grid companies are as follows: image 3 shown. User parameters are set according to typical smart electricity users. The electricity sales company had a total of 30,000 users on that day, and the total number of users in the region was 60,000. The load demand elasticity coefficient is calculated by the user agent based on historical data for a period of time. The upper and lower limits of power constraints for electricity sales companies are set to 20MW and 40MW at each moment, the initial electricity price after conversion is set to 50$ / MWh, the upper and lower limits of price are set to 40$ / MWh and 120$ / MWh, and the total electricity sales in a day is not less than 70% of the initial electric quantity; α takes 0.05, confidence β takes 0.95.

...

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Abstract

The invention discloses a method for controlling electricity purchase by an electricity sales company in an environment where allocation and sales are separated. The control method includes the following steps: establishing a three-layer electricity purchase and sale of power grid company-electricity sales company-user according to an electricity sales company Agent and a user Agent Service architecture; based on the three-tier electricity purchase and sale service architecture, build a user electricity elasticity model consisting of uncontrollable loads, transferable loads, and variable loads; The power purchase control model of electricity sales companies, the model includes: taking the maximum sum of sales income and potential income of electricity sales companies as the objective function, considering market stability constraints and electricity purchase and sales balance constraints respectively. The invention fully considers the electricity sales company's purchase and sale of electricity and the uncertainty of future expectations, establishes the electricity sales company's decision-making model for electricity, uses the chaotic particle swarm algorithm to solve the problem, and realizes the optimization of electricity purchase.

Description

technical field [0001] The invention relates to the electric power field of electric power systems, in particular to a method for controlling electricity purchase quantity of electricity sales companies under the environment of separation of distribution and sales. Background technique [0002] At present, wind power, photovoltaic and other renewable new energy power generation are replacing traditional fossil energy, and electric vehicles are replacing traditional vehicles. This leads to random and intermittent power generation and power loads in the system. At the same time, power users use the power management system Or the equipment responds to the price of electric energy and shifts or cuts the load. The implementation of electricity retail business under the uncertain conditions of "source" and "load" draws attention to the operation of electricity sales companies. [0003] A complete electricity market is generally divided into medium and long-term contract trading m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q30/06G06Q50/06
CPCG06Q10/04G06Q10/067G06Q30/06G06Q50/06Y04S50/10
Inventor 孔祥玉张禹森王成山李瑶虹颜庆国陈振宇栾开宁李彬
Owner TIANJIN UNIV
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