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Micro-grid active operation decision-making method based on sensitivity analysis

A technology of sensitivity analysis and decision-making method, which is applied in the field of active operation decision-making of micro-grid based on sensitivity analysis, can solve problems such as the complex operating environment of renewable energy micro-grid, and achieve the effect of ensuring safe and reliable operation

Active Publication Date: 2018-09-28
XIANGTAN UNIV
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Problems solved by technology

However, unlike the traditional grid power supply, the traditional grid can be regarded as a stable infinite power supply, and its frequency and voltage can be kept constant. The randomness and uncertainty of renewable energy make the operating environment of the microgrid extremely complex, which brings great challenges to the accurate prediction of power quality. challenge

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  • Micro-grid active operation decision-making method based on sensitivity analysis
  • Micro-grid active operation decision-making method based on sensitivity analysis
  • Micro-grid active operation decision-making method based on sensitivity analysis

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] Such as figure 1 As shown, a method for active operation decision-making of microgrid based on sensitivity analysis includes the following steps:

[0037] Step 1: Use situational awareness technology to collect, understand and predict various information elements related to power quality changes in distribution networks, and grasp power quality changes.

[0038] The situational awareness of the microgrid is an important technical means to master the operation of the power grid. It collects, understands and predicts various information elements related to changes in power quality, making the security management of the power grid change from passive to active. The relationship between the power grid and the microgrid converter The information interaction framework among them includes the power grid, advanced converters and converter controllers. B...

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Abstract

The invention discloses a micro-grid active operation decision-making method based on sensitivity analysis. The method comprises the following steps: using a situation awareness technology to collect,understand and predict various types of information elements related to distribution network power quality change, and mastering a power quality change situation; and on the basis of predicting the future change trend of the power quality, establishing an active operation decision-making model of converter situation awareness and power flow calculation through an information interaction architecture between micro-grid converters. Based on the obtained active operation decision-making model, an advanced converter control strategy is proposed, the optimal operation mode decision of a distribution network is achieved, more effective means are provided for solving power grid power quality control, so that the safety management of the power grid is changed from passive to active, and safe andreliable operation of the distribution network is guaranteed.

Description

technical field [0001] The invention relates to a decision-making method for active operation of a micro-grid based on sensitivity analysis. Background technique [0002] As an effective means of connecting distributed power sources to the grid, microgrids have gradually attracted widespread attention. The uninterrupted random access of new energy generation under high penetration rates has brought new challenges to the distribution network. However, due to the intermittent, random and output uncertainty of renewable energy, it will have a great impact on power quality, resulting in unstable output power, causing voltage fluctuations and transients in microgrids and distribution network systems containing microgrids. Oscillation, etc. With economic development, energy structure adjustment and smart grid construction, modern society has put forward higher and higher requirements for power supply reliability, power quality, service diversification, and environmental friendlin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/16H02J3/48
CPCH02J3/383H02J3/385H02J3/16H02J3/48H02J3/003H02J2203/20Y02E10/56Y02E40/30
Inventor 钟颖段斌屈相帅晏寅鑫
Owner XIANGTAN UNIV
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