Two-stage optimal dispatch strategy for integrated energy system with P2G considering demand response

By adopting two-stage optimization scheduling strategies of demand response and P2G technology in an integrated energy system, the problem of difficult to absorb the excess output of renewable energy is solved, and efficient energy utilization and system stability are achieved.

CN115081708BActive Publication Date: 2025-03-28STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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Patent Information

Application Number
CN202210697459.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-06-20
Publication Date
2025-03-28
Estimated Expiration
2042-06-20

AI Technical Summary

Technical Problem

The coupling between the existing power system and the natural gas system only realizes the one-way conversion of natural gas to electricity, resulting in difficult to absorb the excess output of renewable energy, resulting in wind and light abandonment, and the independent combined heat and power supply microgrid has a weak ability to resist the random fluctuations of renewable energy.

Method used

A two-stage optimization scheduling strategy for integrated P2G energy systems that consider demand response is adopted. Through technologies such as demand response, electric to gas and electric to heat, energy retail prices and equipment output are optimized, the net income of system operators is maximized, and the excess electricity is converted into natural gas for storage through P2G equipment.

Benefits of technology

Effectively reduce wind and light abandonment, improve energy utilization, enhance the system's ability to resist renewable energy fluctuations, and promote energy conservation and emission reduction.

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Abstract

The present invention relates to a two-stage optimization scheduling strategy for an integrated energy system including P2G that takes demand response into consideration, comprising the following steps: optimizing the retail price of energy; optimizing the retail price of energy and taking into account the participation of users in price-type demand response, with the goal of minimizing load fluctuation, solving the electricity and gas loads of users after participating in the demand response, and obtaining the optimized retail price of energy and the electricity and gas load curves; obtaining the photovoltaic output of wind turbines within the next 24 hours, and optimizing the output of each device in the system and the external purchase of energy based on the optimized retail price of energy and the electricity and gas load curves, with the goal of maximizing the net profit of the system operator. In the integrated energy system, the present invention can absorb the excess output of renewable energy through technologies such as demand response, power-to-gas, and power-to-heat, which can reduce the phenomenon of wind and light abandonment, promote energy conservation and emission reduction, and has important use value.
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