针对快速开关型故障限流器(fast switch fault current limiter,FSFCL)在电网中布点和容量优化问题,提出一种基于改进PSO-GSA算法的FSFCL全局优化配置模型。首先分析了FSFCL的基本原理,采用基于支路阻抗的灵敏度法缩小搜索空间;将限流...针对快速开关型故障限流器(fast switch fault current limiter,FSFCL)在电网中布点和容量优化问题,提出一种基于改进PSO-GSA算法的FSFCL全局优化配置模型。首先分析了FSFCL的基本原理,采用基于支路阻抗的灵敏度法缩小搜索空间;将限流效果及限流器成本作为优化目标,构造适应度函数;然后利用粒子群算法改进万有引力搜索算法(PSO-GSA)并对该混合算法进一步改进,制定算法优化流程。同时,由于依据人工经验在直接选择最终配置方案时可能会达不到最佳的效果,通过建立方案评价模型,依据相对熵原理确定各指标组合权重,再利用加权逼近理想点排序法(technique for order by similarity to an idea solution,TOPSIS)对方案进行排序,选取了最终配置方案。文中的方案评价模型可避免仅凭人工经验选择安装FSFCL线路的盲目性,有效地降低了电网规划成本。最后采用IEEE39节点系统算例仿真验证了该全局优化配置模型和方案评价模型的有效性。展开更多
作为智能配电网的重要设备之一,电力变压器运行状态的准确判别有着重要意义,为了对其状态做出快速准确地评价,提出一种基于改进TOPSIS(Technique for Order Preference by Similarity to an Ideal Solution)灰色关联分析的电力变压器状...作为智能配电网的重要设备之一,电力变压器运行状态的准确判别有着重要意义,为了对其状态做出快速准确地评价,提出一种基于改进TOPSIS(Technique for Order Preference by Similarity to an Ideal Solution)灰色关联分析的电力变压器状态评估方法。该方法从运行状况、技术指标、历史记录3方面建立电力变压器状态评估指标体系;运用改进主客观赋权法确定了各指标的权重;引入分段动态分辨系数,用灰色绝对关联度改善传统灰色关联度形成综合灰色关联度;应用改进TOPSIS灰色关联分析计算待评估变压器状态与正、负理想状态之间的加权马氏距离和综合灰色关联度,并将两者结合得到待评估变压器的状态。通过对实际算例分析,证明了该方法的有效性。展开更多
In the era of the digital economy, great changes have taken place in the production and trading of enterprises. The emergence of digital technology has brought new impetus to optimize the layout of industrial structur...In the era of the digital economy, great changes have taken place in the production and trading of enterprises. The emergence of digital technology has brought new impetus to optimize the layout of industrial structures and transform the old and new kinetic energy. Combined with the 14th Five-Year Plan and the requirements of domestic and international dual-cycle development, we construct an evaluation index system for the efficiency of industrial supply-side structural reform from the five dimensions of benefit improvement, innovation-driven, structural optimization, ECO development, and people’s liveli-hood benefit. Based on the data of Guizhou and Sichuan province from 2010 to 2019, the efficiency of industrial supply-side structural reform in Guizhou from the horizontal and vertical perspectives is evaluated by using the entropy weight TOPSISI model, and policy suggestions for industrial development in Guizhou are put forward. Results show that:(1) the level of industrial supply-side structural reform in Guizhou was on the rise since 2015, but the development rate had slowed in the past two years, and the gap was obvious with Sichuan;(2) there is a problem of insufficient development imbalance in Guizhou, which is lagging in four aspects, including benefit improvement, innovation-driven, ECO development, and people’s livelihood benefit.展开更多
文摘针对快速开关型故障限流器(fast switch fault current limiter,FSFCL)在电网中布点和容量优化问题,提出一种基于改进PSO-GSA算法的FSFCL全局优化配置模型。首先分析了FSFCL的基本原理,采用基于支路阻抗的灵敏度法缩小搜索空间;将限流效果及限流器成本作为优化目标,构造适应度函数;然后利用粒子群算法改进万有引力搜索算法(PSO-GSA)并对该混合算法进一步改进,制定算法优化流程。同时,由于依据人工经验在直接选择最终配置方案时可能会达不到最佳的效果,通过建立方案评价模型,依据相对熵原理确定各指标组合权重,再利用加权逼近理想点排序法(technique for order by similarity to an idea solution,TOPSIS)对方案进行排序,选取了最终配置方案。文中的方案评价模型可避免仅凭人工经验选择安装FSFCL线路的盲目性,有效地降低了电网规划成本。最后采用IEEE39节点系统算例仿真验证了该全局优化配置模型和方案评价模型的有效性。
文摘作为智能配电网的重要设备之一,电力变压器运行状态的准确判别有着重要意义,为了对其状态做出快速准确地评价,提出一种基于改进TOPSIS(Technique for Order Preference by Similarity to an Ideal Solution)灰色关联分析的电力变压器状态评估方法。该方法从运行状况、技术指标、历史记录3方面建立电力变压器状态评估指标体系;运用改进主客观赋权法确定了各指标的权重;引入分段动态分辨系数,用灰色绝对关联度改善传统灰色关联度形成综合灰色关联度;应用改进TOPSIS灰色关联分析计算待评估变压器状态与正、负理想状态之间的加权马氏距离和综合灰色关联度,并将两者结合得到待评估变压器的状态。通过对实际算例分析,证明了该方法的有效性。
基金supported by the Key Projects of Humanities and Social Sciences in Colleges and Univer-sities of Guizhou Province(Grant No.2020ZD003).
文摘In the era of the digital economy, great changes have taken place in the production and trading of enterprises. The emergence of digital technology has brought new impetus to optimize the layout of industrial structures and transform the old and new kinetic energy. Combined with the 14th Five-Year Plan and the requirements of domestic and international dual-cycle development, we construct an evaluation index system for the efficiency of industrial supply-side structural reform from the five dimensions of benefit improvement, innovation-driven, structural optimization, ECO development, and people’s liveli-hood benefit. Based on the data of Guizhou and Sichuan province from 2010 to 2019, the efficiency of industrial supply-side structural reform in Guizhou from the horizontal and vertical perspectives is evaluated by using the entropy weight TOPSISI model, and policy suggestions for industrial development in Guizhou are put forward. Results show that:(1) the level of industrial supply-side structural reform in Guizhou was on the rise since 2015, but the development rate had slowed in the past two years, and the gap was obvious with Sichuan;(2) there is a problem of insufficient development imbalance in Guizhou, which is lagging in four aspects, including benefit improvement, innovation-driven, ECO development, and people’s livelihood benefit.
