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Micro-grid operation optimization method based on dynamic electricity price

An operation-optimized, microgrid technology, applied in the direction of AC networks with different sources of the same frequency, etc.

Inactive Publication Date: 2014-09-24
SICHUAN UNIV +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional operation optimization method only considers the microgrid itself, and it is relatively simple to consider the impact of microgrid access to the distribution network. Only peak and valley electricity prices and real-time electricity prices are considered to account for the impact of microgrid access on the distribution network.

Method used

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  • Micro-grid operation optimization method based on dynamic electricity price
  • Micro-grid operation optimization method based on dynamic electricity price
  • Micro-grid operation optimization method based on dynamic electricity price

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Embodiment

[0069] Such as figure 1 As shown, the particle swarm optimization algorithm is used to optimize the output of each micro-source, which includes inputting raw data such as exchange power, wind, light, and load of the reference plan ( figure 1 Box 1 in the middle), set the parameters of the particle swarm optimization algorithm ( figure 1 Box 2-3) and particle swarm algorithm iterative calculation ( figure 1 Box 4-6) 3 steps, respectively figure 1 In the first box; setting the parameters of the particle swarm optimization algorithm includes initializing the population position and velocity, respectively figure 1 Boxes 2 and 3; the iterative calculation of the particle swarm optimization algorithm includes evaluating the fitness value of the individual, selecting the individual optimal value and the global optimal value, updating the position and speed of the population, and adopting the optimal retention policy during the operation. Generate new offspring populations and newl...

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Abstract

The invention discloses a micro-grid operation optimization method based on a dynamic electricity price. The method is characterized in that fuzzification is carried out on a reference plan exchange power curve delivered by a power distribution network to a micro-grid and a plan exchange power curve of the micro-grid, the Euclid close degree of the two curves is calculated so that the electricity price can be dynamic, a target function taking the dynamic electricity price, operation maintenance cost and pollution discharge treatment cost into consideration is built, and a micro-grid economic optimization operation scheme is solved by means of a particle swarm optimization. Accordingly, the micro-grid can coordinate operation of the power distribution network in the operation optimization process, and influences of micro-grid connection on the power distribution network are reduced.

Description

technical field [0001] The invention relates to a micro-grid operation optimization method based on dynamic electricity price. Specifically, the present invention aims at a micro-grid with various micro-power sources, and establishes a micro-grid operation optimization model based on dynamic electricity prices, operation and maintenance costs, and sewage treatment costs. It belongs to the technical field of coordinated operation optimization of microgrid and distribution network. Background technique [0002] Microgrid is a new type of network structure composed of micro-sources, energy storage equipment, loads and control devices. It can fully promote the large-scale access of distributed power sources and renewable energy, and realize high reliability of various energy forms for loads. Supply is an important form of realizing active distribution network and smart grid. Microgrid operation optimization refers to the rational allocation of loads according to the control st...

Claims

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Application Information

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IPC IPC(8): H02J3/06
Inventor 刘天琪胡晓通李兴源时珊珊李妮刘舒柳劲松周宜广
Owner SICHUAN UNIV
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