An optimization method for integrated gas-electric energy system considering unit start-up and shutdown
A technology for unit start-stop and system optimization, which is applied in the field of optimal operation of multi-energy coupled systems, and can solve problems such as insufficient optimization and scheduling methods.
Active Publication Date: 2021-10-19
JIANGSU FRONTIER ELECTRIC TECH +2
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[0003] The present invention aims at the problem that the unit combination optimization scheduling method of the integrated gas-electric energy system in the above-mentioned prior art is not fine enough, and provides an integrated gas-electric energy system optimization method that takes into account the start and stop of the unit, and elaborates in detail the consideration of the start and stop states Constraints such as unit output, ramp up, start-stop duration, etc., and factors such as the remaining dispatchable time of the dispatch cycle, and linearized solution methods
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[0092] The present invention is described in further detail now in conjunction with accompanying drawing.
[0093] The present invention discloses an integrated gas-electric energy system optimization method that takes into account the start and stop of the unit, and its implementation steps are as follows figure 1 As shown, the details are as follows:
[0094] S1: Input known relevant energy system data, including source-load data and economic index data, as well as equipment parameter data, etc.
[0095] S2: Establish a binary variable relationship model for unit startup and shutdown.
[0096] The binary variables describing the start and stop of the unit include: start and stop status start action stop action in, Indicates that unit i is running at time t, Indicates that unit i is in shutdown state at time t; Indicates that the unit i starts the action at time t, Indicates that unit i has not started any action at time t; Indicates that unit i takes a shutd...
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The invention discloses an optimization method for an integrated gas-electric energy system considering the start and stop of a unit. This method first establishes the unit combination modeling method of the unit in the integrated gas-electric energy system, and then establishes the operating constraints such as output, ramp and duration of the unit start-up and shutdown states, and then the matrixed power system and natural gas system balance Model, proposed tie-line safety constraints based on power generation transfer distribution factors, and simplified method of gas-electric coupling model of gas-fired units based on piecewise linearization method. Finally, the embodiment of the integrated gas-electric energy system is constructed, and the simulation optimization is carried out with the optimization goal of economic cost, which provides a theoretical basis and effective optimization scheme for the unit operation scheduling in the integrated gas-electric energy system.
Description
technical field [0001] The invention belongs to the optimization operation technology of a multi-energy coupling system, and in particular relates to an optimization method of an integrated gas-electricity energy system considering the start and stop of a unit. Background technique [0002] Coal resources are facing depletion and environmental pollution is serious, and the power system with only thermal power generation has been difficult to adapt to the trend of energy transformation under the new situation. Integrated gas-electricity energy system is one of the most promising ways of comprehensive energy utilization at present, and replacing coal-fired power generation with natural gas power generation can effectively alleviate environmental pollution. The performance of the gas-fired unit has been widely verified, and it is the most critical element to realize gas-electric coupling. At present, the integrated gas-electricity energy system has received extensive attention...
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IPC IPC(8): H02J3/46G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06312G06Q50/06H02J3/466H02J2203/20Y02E40/70Y04S10/50
Inventor 梅睿刘亚南李辰龙顾文杨宏宇姚瑶肖鹏孙永辉王建喜
Owner JIANGSU FRONTIER ELECTRIC TECH