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A distributed microgrid system operation method based on Gossip algorithm

An operation method and micro-grid technology, applied in the field of micro-grid, can solve problems such as the impact of the upper-level power grid and insufficient utilization of new energy, and achieve the effects of minimum power consumption, plug-and-play, and improved control performance

Inactive Publication Date: 2019-01-15
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a distributed microgrid system operation method based on the Gossip algorithm to solve the problems of insufficient utilization of new energy and the impact of the microgrid system on the upper power grid, and ensure the supply and demand of electric energy Balance and Power Quality

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  • A distributed microgrid system operation method based on Gossip algorithm
  • A distributed microgrid system operation method based on Gossip algorithm
  • A distributed microgrid system operation method based on Gossip algorithm

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[0034] Please refer to figure 1 , a distributed microgrid system operating method based on Gossip algorithm, the microgrid system includes an energy storage battery, a converter and a controller corresponding to the converter, comprising the following steps:

[0035] S1. Collect current and power parameter data in the microgrid system;

[0036] S2. Using the parameter data to construct the objective function of the microgrid system based on the power formula;

[0037] The objective function of the microgrid system is:

[0038]

[0039] where P i Indicates the active power reference value of the i-th controller, α i , β i , gamma i are the power dissipation coefficients of each converter,

[0040] In order to realize the complete utilization of new energy and the whole micro-grid system to present pure resistance and time-sharing constant power, the micro-grid system satisfies the following conditions: P maxv -P v = 0,

[0041] Among them, P maxv is the maximum p...

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Abstract

The invention relates to a distributed microgrid system operation method based on Gossip algorithm. The microgrid system comprises an energy storage battery, a converter and a controller correspondingto the converter. The microgrid system comprises the following steps: collecting current and power parameter data in the microgrid system; Based on the power formula, the objective function of the microgrid system is constructed by using the parameter data. The Lagrangian function of objective function is constructed by Lagrangian multiplier method. Under the necessary condition of the existenceof Lagrangian extremum, the minimum value of the objective function is obtained by Gossip algorithm, and the optimal solution is obtained. The power data contained in the optimal solution is given toa controller in a home microgrid system, thereby controlling the active power of the microgrid system converter. The invention effectively solves the problems existing in the centralized control, improves the control performance of the system, and is conducive to realizing plug-and-play on the micro-network.

Description

technical field [0001] The invention relates to the technical field of micro-grids, in particular to a distributed micro-grid system operating method based on a Gossip algorithm. Background technique [0002] With the large amount of new energy connected to the grid, the development and utilization of renewable energy has become a consensus. The vigorous development of new energy will have an impact on the mains, and its intermittency and unpredictability will have an impact on the mains, and seriously affect the balance of power supply and demand and power quality. In order to ensure its own stable operation, the main network adopts strict restrictions on new energy power generation, resulting in the phenomenon of abandoning wind and light, resulting in energy waste. [0003] The traditional control method generally uses a centralized optimization method to solve the control problem of the microgrid system. The centralized optimization method uses the central controller to...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/382H02J3/383H02J2203/20Y02B10/10Y02E10/56
Inventor 鲁仁全周嘉煜徐雍李鸿一李军毅
Owner GUANGDONG UNIV OF TECH
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