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Thermoelectric-combined-system distributed scheduling method under auxiliary service market environment

A heat and power combination and auxiliary service technology, applied in heating systems, heating methods, household heating, etc., can solve problems such as the difficulty in realizing unified scheduling of complete models of power systems and heating systems

Active Publication Date: 2017-07-28
STATE GRID JILIN ELECTRIC POWER COMPANY LIMITED +2
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Problems solved by technology

[0004] The power system and the heating system are operated independently by the power company and the heating company. Due to the independence of scheduling, it is difficult to achieve unified scheduling of the complete model of the power system and the heating system

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  • Thermoelectric-combined-system distributed scheduling method under auxiliary service market environment
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  • Thermoelectric-combined-system distributed scheduling method under auxiliary service market environment

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Embodiment Construction

[0110] The distributed scheduling method of the combined heat and power system proposed by the present invention under the auxiliary service market environment includes the following steps:

[0111] (1) Establish a dispatching model of combined heat and power system in ancillary service market environment. The dispatching model is composed of objective function and constraint conditions, including:

[0112] (1-1) The objective function of the CHP system dispatching model in the ancillary service market environment:

[0113] The objective function of the combined heat and power system scheduling model is the minimization of the sum of the power system operating cost, the power system backup auxiliary service cost and the heating system operating cost, and the expression is:

[0114]

[0115] In the above formula, T is the set of dispatching periods, and the superscripts CHP, TU, WD, HB and AS represent cogeneration units, conventional units, wind turbines, thermal boilers an...

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Abstract

The invention relates to a thermoelectric-combined-system distributed scheduling method under an auxiliary service market environment and belongs to the electric power system operation control technology field. In the method, a scheduling model of an electric power system and a scheduling model of a heat supply system are comprehensively considered, and an extra scheduling target under the auxiliary service market environment is also considered so that a thermoelectric-combined-system scheduling model under the auxiliary service market environment is established. Based on a variable direction multiplier algorithm, the electric power system and each heat supply system process scheduling problems of respective jurisdictional areas in a distributed mode. Through interactive iteration of boundary data among different systems, a thermoelectric-combined-system distributed-scheduling optimal solution under the auxiliary service market environment is acquired. By using the thermoelectric-combined-system distributed scheduling method under the auxiliary service market environment, a good convergence speed is possessed; and through a heat storage effect of the heat supply system, flexibility of system operation can be increased.

Description

technical field [0001] The invention relates to a distributed scheduling method for a combined heat and power system under an auxiliary service market environment, and belongs to the technical field of power system operation control. Background technique [0002] Wind power curtailment is serious in the three northern regions of my country. Limited by the minimum operating constraints of the urban heating system in winter, cogeneration units cannot reduce their output to provide space for wind power consumption. Specifically, winter nights belong to the period of high wind power generation, but at the same time there is a high residential heat load at night, resulting in the need for wind power to be limited to provide output space for combined heat and power units, so there is a contradiction between heat supply and wind power consumption demand . Due to the good heat storage efficiency of the heating pipe network, the comprehensive consideration of the power system and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46F24D19/10
CPCH02J3/46H02J2203/20
Inventor 孙勇吴文传李振元王彬刘志君张佰明李宝聚蔺晨晖傅吉悦
Owner STATE GRID JILIN ELECTRIC POWER COMPANY LIMITED
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