Thermal-electric coupling multi-energy flow system power risk assessment method based on interval method

Abstract

The invention relates to a thermal-electric coupling multi-energy flow system power risk assessment method based on an interval method, and belongs to the technical field of risk assessment of the comprehensive energy system. According to the risk assessment method, a multi-energy flow system equipment model and a multi-energy flow system stochastic model are established, the consumption effect ofoptimal scheduling of the energy storage equipment and the flexible unit in the system on the uncertainty is considered and the interval method solving the stochastic problem is given, and the size of the risk of the uncertainty of the renewable energy source and the uncertainty of energy consumption of the electricity user and the heat user in a day in the future on the multi-energy flow systempower balance is calculated. According to the method, the operation risk of the electric-thermal coupling multi-energy flow system can be more accurately calculated so that the operation safety can beenhanced, the operation cost of the multi-energy flow system can be reduced, and certain contribution is made for searching multi-consumption of the renewable energy source and multi-energy system joint scheduling.

Description

technical field [0001] The invention relates to a thermal-electrical coupling multi-energy flow system power risk assessment method based on an interval method, and belongs to the technical field of risk assessment of comprehensive energy systems. Background technique: [0002] The multi-energy flow system covers multiple energy flow subsystems such as electricity, heat, cooling, and air. Each subsystem is converted and coupled together through combined cooling, heating and power (CHP / CCHP), heat pumps, and other equipment. The rise of the Energy Internet in recent years has made the multi-energy network that transmits energy in various forms of electricity, heat, cold, and air show its superiority. On the one hand, the establishment of a multi-energy flow system has considerable benefits. On the other hand, the multi-energy coupling also leads to the interaction of uncertain factors in each subsystem, which will affect the normal energy consumption of users, and even affect...

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Problems solved by technology

The risk assessment of multi-energy flow system needs to consider the coupling effect between various energy flows, and the uncertainty of renewable energy and multi-energy flow user load. Compared with the risk assessment of traditional power system, multi-energy flow risk assessment has high complexity

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