Coordinated dispatching system and method of electricity and heat based on non-uniform characteristics of terminal heat load

Abstract

The invention discloses an electricity and heat coordinated scheduling system and method based on the non-uniform characteristics of terminal heat load, which breaks the rough peak-shaving mode of combined heat and power. Users use hot water heating radiators and air conditioners to consume electricity for heating, hot water is provided by combined heat and power units and hot water tanks, and electricity is jointly provided by thermal power units and wind turbines. The heat load uniformity measurement and analysis system is used to collect the main user information and establish a heat load uniformity distribution model. On the premise of taking into account the user's electricity, heat supply, interference and heat load uniformity distribution differences, the hot water output at the source is reduced. The amount is made up by part of the user's load consumption for heating, while part of the hot water tank is used for heat storage. According to the fluctuation of wind power generation and the non-uniform characteristics of users, adjust the heat and electricity output and obtain the switch state function of the regulated users to realize the refined control of users, thereby reducing the amount of abandoned air, reducing user interference and improving control accuracy.

Description

technical field [0001] The invention belongs to the technical field of comprehensive application of clean energy, and relates to an electricity and heat coordinated scheduling system and method based on the non-uniform characteristics of terminal heat load. Background technique [0002] Renewable energy is inexhaustible and green. Taking wind energy as an example, although its utilization has developed rapidly in recent years, problems have also followed. The uncertainty and volatility of wind power will have a greater impact and even danger on the operation of the power grid. In particular, the anti-peaking phenomenon of wind power enlarges the peak-to-valley difference of the system and increases the difficulty of power grid dispatching. We must continue to explore ways to artificially perform peak regulation to reduce the amount of abandoned air on the premise of ensuring the heat supply of urban residents. [0003] Peak shaving includes two aspects: peak shaving depth...

AI Technical Summary

Problems solved by technology

Method ① starts from the source end, uses thermal power to regulate wind power, and improves the peak shaving capability, but does not consider the potential peak shaving capability of the demand-side user end; method ② starts from both the source end and the demand-side user end, on the one hand, the source end regulates thermal power The power output of the unit; on the other hand, according to the time lag of hot water and the instantaneous nature of power, the load at the user end is reasonably arranged to accommodate the peak-shaving of wind power heating, and the peak-shaving capability is further improved, but it is assumed that the uniformity of users is exactly the same regulation under the circumstances

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