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Mixed integer second-order cone planning method and system capable of realizing distribution network voltage reactive power coordination optimization

A second-order cone planning, voltage and reactive power technology, applied in the field of power grid

Active Publication Date: 2017-07-04
GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU
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Problems solved by technology

[0005] Based on this, it is necessary to provide a mixed integer second-order cone programming method for the coordinated optimization of distribution network voltage and reactive power that includes photovoltaic power sources. Planning Methods and Systems

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  • Mixed integer second-order cone planning method and system capable of realizing distribution network voltage reactive power coordination optimization
  • Mixed integer second-order cone planning method and system capable of realizing distribution network voltage reactive power coordination optimization
  • Mixed integer second-order cone planning method and system capable of realizing distribution network voltage reactive power coordination optimization

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Embodiment Construction

[0027] Solar energy is a huge amount of renewable energy. In the century when fossil energy is increasingly exhausted, photovoltaic power generation will eventually develop into the most important and renewable alternative from space energy, emergency energy, military energy, portable energy, and poverty alleviation energy. One of energy. With the development of photovoltaic grid-connected technology, more and more photovoltaic power stations have been connected to the grid in recent years. On the basis of feeding electric energy to the grid, they also have certain reactive power regulation and auxiliary service capabilities. However, the amount of power generated by solar photovoltaic power sources is related to the intensity of solar radiation. Since the direct sunlight reaching a certain ground is affected by factors such as climate and seasons, solar photovoltaic power generation is unstable. After the photovoltaic power supply is connected to the grid, the stability, safe...

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Abstract

The invention provides a mixed integer second-order cone planning method and system capable of realizing distribution network voltage reactive power coordination optimization. The method comprises the steps of obtaining photovoltaic power supply output power in an active distribution network; obtaining a voltage reactive power multi-object coordination optimization target function in the active distribution network; determining constraint conditions which need to be satisfied in safety operation of the active distribution network; establishing a voltage reactive power multi-object coordination optimization model of the active distribution network; performing cone conversion on the established voltage reactive power multi-object coordination optimization model of the active distribution network; solving a mixed integer second-order cone planning model; and obtaining an operating strategy of decision variables and performing coordination optimization. In the whole process, the optimality and accuracy of the optimization, and the safety operation of the electric power grid can be ensured based on the photovoltaic power supply output power, by means of considering an influence mechanism of the uncertainty of the photovoltaic power supply output on the voltage distribution and reactive power flow of the distribution network, and by virtue of the mixed integer second-order cone planning on the voltage reactive power coordination optimization of the distribution network based on a request result of the mixed integer second-order cone planning.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to a mixed integer second-order cone programming method and system for coordinated optimization of distribution network voltage and reactive power. Background technique [0002] The continuous increase in electricity demand, the shortage of traditional energy sources, and the opening of the electricity market are driving the grid to develop in an efficient, flexible, smart, and sustainable way to adapt to future technological needs. Sustainability is the basic feature of the future power grid, and its essence is the large-scale access and application of distributed power, especially renewable energy. [0003] Distributed power generation has developed rapidly in recent years, especially photovoltaic power generation. The impact of distributed photovoltaic power on the distribution network voltage will be considered from two aspects. First of all, after the distributed power sup...

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Application Information

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IPC IPC(8): H02J3/12H02J3/18
CPCH02J3/12H02J3/18H02J3/383H02J2203/20Y02E10/56Y02E40/30
Inventor 郭清元吴杰康司徒友莫超林少华曾伟忠罗煜陈嘉威邱泽坚廖一键王正卿
Owner GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU
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