Integrated gas-electric energy system optimization method considering unit start and stop
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: 2020-08-21
JIANGSU FRONTIER ELECTRIC TECH +2
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Problems solved by technology
[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 integrated gas-electric energy system optimization method considering unit start and stop. The method comprises the following steps: establishing a unit combination modelingmethod of a unit in an integrated gas-electric energy system, establishing a power system and natural gas system balance model which considers output, climbing, duration and other operation constraints of starting and stopping states of the unit, enabling the model to be matrix, proposing a tie line safety constraint based on a power generation transfer distribution factor and a simplification method of a gas-electric coupling model of the gas unit based on a piecewise linearization method, and constructing an integrated gas-electric energy system embodiment. Simulation optimization is carried out with the optimal economic cost as the optimization target, and a theoretical basis and an effective optimization scheme are provided for unit operation scheduling in the integrated gas-electricenergy 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