Real-time optimal dispatching method for variable-air-volume air conditioning system in response to power grid frequency regulation

Abstract

The invention discloses a real-time optimal dispatching method for variable-air-volume air conditioning system in response to power grid frequency regulation. The method comprises the following stepsthat 1) a thermodynamic model of the variable-air-volume air conditioning system and an electrical model of a variable-air-volume air conditioning fan are established; 2) a load aggregation merchant acquires the user information and the state information of the variable-air-volume air conditioning system; 3) the intention and the condition of the variable-air-volume air-conditioning system to participate in the power grid frequency regulation are judged; 4) the load aggregation merchant calculates the frequency regulating capacity which can be provided by the variable-air-volume air conditioner fan and gathers and uploads the frequency regulating capacity to a dispatching center, a frequency regulating task is dispatched by the dispatching center according to the frequency regulating capacity and is dispatched to the load aggregation merchant; and 5) the load aggregation merchant optimally adjusts the load of the variable-air-volume air-conditioning fan in real time according to the frequency regulating task and the comfort level of a user, a control instruction is issued, and the input power of the variable-air-volume air conditioner fan is adjusted. According to the real-time optimal dispatching method, on the premise that the comfort level of the user is guaranteed, the variable-air-volume air conditioning system can be ensured to participate in power grid frequency adjustment, and the quality of the power grid frequency can be improved.

Description

technical field [0001] The embodiments of the present invention belong to the field of smart grid demand side response, and in particular relate to a real-time optimal scheduling method for a variable air volume air-conditioning fan to respond to grid frequency adjustment. Background technique [0002] With the continuous depletion of fossil energy and the deteriorating environment, energy conservation and emission reduction have been highly valued by the state. Variable air volume air-conditioning systems are widely used in large buildings because of their good energy-saving effects. Currently, they account for 30% of the world's air-conditioning systems, and the utilization rate of high-rise buildings has reached 95%. [0003] The VAV air-conditioning system load itself has thermal inertia, short-term adjustment has little impact on user comfort, and has a fast response speed and great adjustment potential, so it has become an important adjustment resource on the demand si...

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Problems solved by technology

[0004] The key for the variable air volume air-conditioning system to participate in grid frequency regulation is the coordination of user indoor comfort and grid regulation tasks. However, considering this coordination, how to implement real-time optimal dispatch control has not yet received attention

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