Comprehensive energy system operation optimization method and system based on virtual load control

Abstract

The invention discloses an integrated energy system operation optimization method and system based on virtual load control, and the method comprises the steps: taking the minimization of the operation cost of an integrated energy system as an optimization target, taking the output power of energy supply equipment and an electricity-cold-heat translational load as optimization variables, and constructing a virtual load control optimization model; and solving the virtual load control optimization model to obtain the optimal output power of the energy supply equipment and the optimal demand load of electricity-cold-heat by taking the electricity-cold-heat energy balance, the output power constraint of the energy supply equipment and the invariant total load capacity as constraint conditions, and controlling the energy charging and discharging of the energy storage equipment according to the optimal output power of the energy supply equipment and the optimal demand load of electricity-cold-heat. The device output power of the energy supply side and the electric, cold and thermal loads of the demand side are subjected to joint optimization, an energy charging and discharging strategy of the energy storage device is formulated on the basis, demand side load response is completed under the condition that the total load capacity is not changed, the system operation index is improved, and the user comfort is not affected.

Description

technical field [0001] The invention relates to the technical field of integrated energy systems, in particular to a method and system for optimizing the operation of an integrated energy system based on virtual load control. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Energy and the environment are the basic conditions for the survival and development of human beings. The total energy demand in the world continues to rise, and the extensive use of fossil energy has caused it to be on the verge of exhaustion. , a green, low-carbon, clean and efficient modern energy supply and demand system is imminent. [0004] The comprehensive energy system close to the user side is composed of renewable energy power generation, heating / cooling, and combined cooling, heating and power (CCHP) systems, which effectively integrate various forms of ener...

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Problems solved by technology

[0005] However, due to the inherent uncertainty and volatility of renewable energy, it is difficult to match the energy on the energy supply side of the system and the energy on the user's demand side, resulting in the failure of the existing operation strategy, which is a major problem restricting the development of integrated energy systems; the demand side load Control is a common means to solve the uncertainty and volatility of renewable energy. Although the user's demand on the demand side can be better matched with the energy output on the energy supply side by optimizing the control of the user's electricity, cooling, and heating loads, the load The translational regulation of will affect the energy consumption comfort of consumers

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