Coupling Scheduling Method of Dynamic Heating System and Power System Considering Auxiliary Services

Abstract

The invention provides a coupling scheduling method of a dynamic heating system and electrical power system including an auxiliary service, and belongs to the technical field of electrical power system operation. The method comprises the steps of firstly, establishing a dynamic heating system and electrical power system including the auxiliary service composed of a target function and constraint conditions, wherein the constraint conditions of a model comprise an electrical power system constraint condition and a heating system constraint condition; converting the model into a secondary formulating model in a matrix mode, making the heating system capable of participating in peak regulation of the electrical power system by making use of slack heat storage performance of the heating systemand a high constraint relationship of heating and heat usage through a system identification method when it is ensured that the heating system completes heating, and obtaining a generated output scheduling plan of a conventional unit, a wind turbine generator and cogeneration units and a heating output scheduling plan of the cogeneration units respectively. According to the coupling scheduling method of the dynamic heating system and electrical power system including the auxiliary service, the heat storage performance of the heating system can be fully excavated, the wind power consumption level is remarkably improved through the peak regulation of the electrical power system, and the operation flexibility of a cogeneration system is improved.

Description

Technical field [0001] The invention belongs to the technical field of power system operation, and particularly relates to a dynamic heating system and a power system coupling dispatch method that takes into account auxiliary services. Background technique [0002] The heating system of northern cities in my country has good heat storage performance, and the source of heat supply mainly comes from cogeneration units. [0003] Combined heat and power units are also the main form of thermal power units in northern my country, which supply power and heat to the power grid and heating network at the same time according to a certain heat supply and power supply relationship. In order to ensure the effective supply of heat, the cogeneration unit needs to output a large amount of electric power, which makes the abundant wind power in the northern region unable to be effectively utilized. [0004] Utilizing the heat storage performance of the heating system and relaxing the strict constrain...

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Problems solved by technology

[0006] The cost of backup auxiliary services is not considered in the economic dispatch of traditional power systems, and the scheduling results are prone to unreasonable backup settings.

In addition, for the power system in the centralized heating period in northern my country, because the combined heat and power unit must maintain the basic heating level, the scheduling strategy of the traditional dispatching method is seriously curtailed. This problem needs to be solved urgently

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