Microgrid Energy Optimization Method Considering Economic Dispatch and Circulation Suppression
A technology of economic dispatch and circulation suppression, which is applied in the direction of AC network circuit, single-network parallel feeding arrangement, emergency treatment AC circuit arrangement, etc.
Active Publication Date: 2017-02-22
嘉兴琥珀科技有限公司
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Similarly, when it comes to the problem of circulation suppression between micro-source inverters with different capacities in parallel, no consideration is given to how to realize the economic sharing of each micro-source on the basis of circulation suppression
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[0048] 1. Project implementation method
[0049] The microgrid energy optimization method considering dynamic economic dispatch and circulation suppression, the specific steps are:
[0050] 1) Initialize the parameters of the microgrid system.
[0051] 1-1) Determine the parameters of microgrid economic dispatch. According to the actual situation of various micro-sources, such as the required fuel cost, repair cost, maintenance cost and actual economic benefits, various parameters of each micro-source benefit function are determined. The expression of each micro-source benefit function is as follows:
[0052]
[0053] Among them, J i (P r,i ) represents the benefit function of the i-th micro-source; c i Represents the cost factor of the i-th micro-source; P r,i That is, the corresponding reference power of the i-th micro-source obtained through evolutionary game theory; P max,i is the maximum power of the i-th micro-source.
[0054] 1-2) Determine various parameters...
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The invention discloses a micro-grid energy optimization method considering economic dispatch and loop current suppression. The micro-grid energy optimization method considering the economic dispatch and loop current suppression includes steps that initializing parameters of a micro-grid system; using an evolutionary game theory to obtain an active power reference value of each micro-source to realize the dynamic economic dispatch of the micro-grid; combining with a virtual impedance technology to realize the loop current suppression between micro-grids; outputting the energy optimization result of the whole micro-grid system. The micro-grid energy optimization method considering the economic dispatch and loop current suppression uses the evolutionary game theory to realize the dynamic economic dispatch of the micro-sources based on cost-effectiveness functions of each micro-source; and meanwhile, the micro-grid energy optimization method considering the economic dispatch and loop current suppression uses the virtual impedance technology and a droop control technology to design an equivalent output impedance of each parallel inverter to enable each micro-source to distribute power according to the power reference value obtained through the evolutionary game theory so as to realize the loop current suppression of the whole micro-grid system.
Description
technical field [0001] The invention relates to dynamic economic dispatch and circulation suppression of various micro-sources in a micro-grid system. It is especially aimed at a micro-grid system in which multiple inverters are connected in parallel. Background technique [0002] Energy is an important material basis for social and economic development, and electric energy, as the cleanest and most convenient form of energy, is the lifeblood of the national economy. However, as the scale of the power grid continues to expand, the ultra-large-scale power system is also increasingly exposed to some disadvantages: high operating costs, great difficulty, and difficulty in adapting to the diverse power supply needs of users. In recent years, several large-scale power outages worldwide have also exposed the weaknesses of power grids in terms of operational safety and reliability. Under the multiple pressures of resource shortage, environmental protection issues, and power grid ...
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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00H02J3/001H02J3/38
Inventor 王晶陈骏宇龚余峰张颖冯杰
Owner 嘉兴琥珀科技有限公司