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Energy Engineering 2024年第10期121卷 2825-2849页

作者： Yue He YaxiongYou ZhianHe Haiying Lu Lei chen Yuqi Jiang hongkun chen Guangzhou Power Supply Bureau Guangdong Power Grid Co.Ltd.CSGGuangzhou510000China School of Electrical Engineering and Automation Wuhan UniversityWuhan430072China

In recent times,the impact of typhoon disasters on integrated energy active distribution networks(IEADNs)has received increasing attention,particularly,in terms of effective cascading fault path prediction and enhanced fault recovery *** this study,we propose a modified ORNL-PSerc-Alaska(OPA)model based on optimal power flow(OPF)calculation to forecast IEADN cascading fault *** first established the topology and operational model of the IEADNs,and the typical fault scenario was chosen according to the component fault probability and information *** modified OPA model consisted of two layers:An upper-layer model to determine the cascading fault location and a lower-layer model to calculate the OPF by using Yalmip and CPLEX and provide the data to update the upper-layer *** approach was validated via the modified IEEE 33-node distribution system and two real *** results showed that the fault trend forecasted by the novel OPA model corresponded well with the development and movement of the typhoon above the *** proposed model also increased the load recovery rate by>24%compared to the traditional OPA model.

关键词： IEADNs OPA model cascading fault path prediction fault probability optimal power flow typical fault scenario

基于投资组合高阶矩分析的电力系统灵活性评估

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电力系统保护与控制 2024年第5期52卷 116-127页

作者：刘颖杰陈红坤田圆高鹏武汉大学电气与自动化学院湖北武汉430072

针对现有灵活性指标形式主要集中于低阶统计量,仅能反映系统灵活性的平均水平与集中程度,而忽视了灵活性的高阶特征这一问题,引入投资组合高阶矩分析理论对电力系统灵活性进行刻画,以揭示系统灵活性的调节潜力与风险。首先,通过分析投... 详细信息

针对现有灵活性指标形式主要集中于低阶统计量,仅能反映系统灵活性的平均水平与集中程度,而忽视了灵活性的高阶特征这一问题,引入投资组合高阶矩分析理论对电力系统灵活性进行刻画,以揭示系统灵活性的调节潜力与风险。首先,通过分析投资组合的均值-方差-偏度-峰度模型(mean-variance-skewness-kurtosismodel,MVSK Model),给出了灵活性单元组合的定义,基于多元Copula函数构建考虑空间相关性的灵活性单元概率模型。其次,基于灵活性单元组合的各阶矩建立灵活性评估指标,并给出基于核密度估计与蒙特卡洛模拟的指标计算方法。最后,通过FTS-213测试系统与德国某电网的历史数据对所提指标进行了测算和验证。算例表明所提指标能够反映系统灵活性调节能力的平均水平、稳定程度、潜力与风险,且能量化评估灵活性资源种类与投建地区对系统灵活性的影响,为后续的灵活性资源规划提供理论支持。

关键词：电力系统灵活性投资组合高阶矩 MVSK模型 Copula函数指标评估

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电气系统安全技术探析

电力设备管理 2024年第12期 244-246页

作者：陈鸿昆广东电网公司广州供电局变电管理一所

电气系统的广泛应用为社会带来了极大便利,但也伴随着潜在的安全隐患。本文旨在深入探讨电气系统安全技术,通过系统性地研究电气系统的安全性,包括风险评估、安全控制、监控以及可靠性提升等核心议题,并结合案例说明了电气系统安全技术... 详细信息

电气系统的广泛应用为社会带来了极大便利,但也伴随着潜在的安全隐患。本文旨在深入探讨电气系统安全技术,通过系统性地研究电气系统的安全性,包括风险评估、安全控制、监控以及可靠性提升等核心议题,并结合案例说明了电气系统安全技术的实际应用,以确保电气系统在各个应用领域的可持续、高效、安全运行。

关键词：电气系统安全问题技术措施

基于改进MMD-GAN的可再生能源随机场景生成

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电力系统保护与控制 2024年第19期52卷 85-96页

作者：吴艳梅陈红坤陈磊褚昱麟高鹏吴海涛交直流智能配电网湖北省工程中心(武汉大学) 湖北武汉430072 武汉大学电气与自动化学院湖北武汉430072 国网武汉供电公司湖北武汉430050

针对可再生能源出力不确定性的准确表征问题,提出了一种基于改进的最大均值差异生成对抗网络(maximum mean discrepancy generative adversarial networks,MMD-GAN)的可再生能源随机场景生成方法。首先,阐述了GAN及MMD-GAN的基本原理,... 详细信息

针对可再生能源出力不确定性的准确表征问题,提出了一种基于改进的最大均值差异生成对抗网络(maximum mean discrepancy generative adversarial networks,MMD-GAN)的可再生能源随机场景生成方法。首先,阐述了GAN及MMD-GAN的基本原理,提出了MMD-GAN的改进方案,即在MMD-GAN的基础上改进鉴别器损失函数,并采用谱归一化和有界高斯核提升生成器和鉴别器的训练稳定性。然后,设计了基于改进MMD-GAN的可再生能源随机场景生成流程。最后,分析了所提方法在可再生能源随机场景生成中的效果,比较了改进MMD-GAN方法与MMD-GAN方法及典型GAN方法的性能差异。结果表明,改进MMD-GAN方法在生成分布和真实分布的Wasserstein距离上较对比方法降低超过50%,生成的场景精度得到有效提升。

关键词：场景生成最大均值差异生成对抗网络可再生能源数据驱动

基于合作博弈与改进理想解法的低碳化电网运营水平综合评价

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武汉大学学报（工学版） 2024年第4期57卷 453-461页

作者：金维刚向朝阳胡晶陈红坤国家电网公司华中分部湖北武汉430077 武汉大学电气与自动化学院湖北武汉430072

在我国能源领域“双碳”目标的引领下,电网呈现低碳化发展趋势,因此需要构建更加全面的综合评价体系进行低碳化电网运营水平的综合评价。提出了一种基于合作博弈与改进理想解法的低碳化电网运营水平综合评价方法。首先,考虑低碳化电网... 详细信息

在我国能源领域“双碳”目标的引领下,电网呈现低碳化发展趋势,因此需要构建更加全面的综合评价体系进行低碳化电网运营水平的综合评价。提出了一种基于合作博弈与改进理想解法的低碳化电网运营水平综合评价方法。首先,考虑低碳化电网运营的影响因素,提出了包括安全与可靠性、经济性、灵活性、适应性和环保性的多级低碳化电网运营水平评价指标体系;其次,通过基于合作博弈的最优组合赋权法确定各指标的组合权重,并采用指数型变权函数对组合权重进行调整;最后,以某地区实际电网运营数据为算例,采用改进理想解法进行运营水平综合评价,结果表明所提方法可准确、合理地评价低碳化电网的运营水平,有助于指导低碳化电网的规划决策。

关键词：合作博弈组合权重低碳化电网改进理想解法电网运营评价

辅助服务市场背景下灵活性资源调峰补偿价格决策方法

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电力自动化设备 2024年第9期44卷 154-161,188页

作者：田圆陈红坤刘颖杰高鹏陈磊武汉大学电气与自动化学院湖北武汉430072

以辅助服务政策为导向,针对价格补偿不尽合理导致调峰参与主体积极性削弱的问题,提出灵活性资源调峰补偿价格决策方法。建立火电、可再生能源、储能、需求响应等灵活性资源的成本及价格补偿模型。在此基础上,考虑风、光出力的不确定性,... 详细信息

以辅助服务政策为导向,针对价格补偿不尽合理导致调峰参与主体积极性削弱的问题,提出灵活性资源调峰补偿价格决策方法。建立火电、可再生能源、储能、需求响应等灵活性资源的成本及价格补偿模型。在此基础上,考虑风、光出力的不确定性,构建双层补偿价格决策模型,外层以综合成本最低为目标,采用线性递减权重粒子群算法求得补偿价格决策结果并将其输入内层,内层以风、光弃电率最低为目标,对模型进行线性化处理后进行优化调度,求解综合成本并将其返回外层,通过双层交互求得调峰参与主体的补偿价格优化结果。算例分析验证了所提模型的有效性和合理性,结果表明,优化补偿价格能够激发各类灵活性资源的调峰积极性,保证调度的经济性,促进可再生能源消纳。

关键词：辅助服务补偿价格灵活性资源调峰可再生能源消纳

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基于负荷时间序列聚类的有序用电管理策略

武汉大学学报（工学版） 2024年第1期57卷 80-88页

作者：方晓明孙彬郑峰童光波肖伟丁同陈红坤国网湖北省电力有限公司黄冈供电公司湖北黄冈438000 武汉大学电气与自动化学院湖北武汉430072

针对目前有序用电方案制定未充分考虑用户负荷特性差异的问题,提出了一种基于负荷时间序列聚类的有序用电管理策略。首先提取单个用户的典型负荷曲线形态;之后采用Canopy和k-shape时间序列聚类算法,解决用户对象较多时传统聚类算法准确... 详细信息

针对目前有序用电方案制定未充分考虑用户负荷特性差异的问题,提出了一种基于负荷时间序列聚类的有序用电管理策略。首先提取单个用户的典型负荷曲线形态;之后采用Canopy和k-shape时间序列聚类算法,解决用户对象较多时传统聚类算法准确性不足的问题,对不同用户的负荷时序数据进行聚类,从而将多个用户划分成不同用电类型;最后根据不同类型用户的负荷特性,制定针对性的有序用电管理策略。以某区域电网实际负荷数据进行算例分析,结果表明,所提方法相比传统方法能更加准确地对多个不同负荷特性的用户进行分类,从而更有效地指导有序用电管理策略的合理制定。

关键词：时间序列负荷聚类有序用电负荷特性相似性度量

Combination of rhamnolipid and biochar in assisting phytoremediation of petroleum hydrocarbon contaminated soil using Spartina anglica

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Journal of Environmental Sciences 2019年第11期31卷 107-118页

作者： Meinan Zhen hongkun chen Qinglong Liu Benru Song Yizhi Wang Jingchun Tang College of Environmental Science and Engineering Nankai University Tianjin 300350 China State Key Lab of Petroleum Pollution Control CNPC Research Institute of Safety & Environmental Technology Beijing 102206 China Tianjin Tianmai Energy Saving Equipment Co.LTD Tianjin 300393 China Key Laboratory of Pollution Processes and Environmental Criteria Ministry of Education Tianjin 300071 China Tianjin Key Laboratory of Environmental Remediation and Pollution Control Tianjin 300071 China

Biochar (BC) and rhamnolipid (RL) is used in bioremediation of petroleum hydrocarbons,however,the combined effect of BC and RL in phytoremediation has not been studied until *** this paper,the phytoremediation of petroleum hydrocarbon-contaminated soil using novel plant Spartina anglica was enhanced by the combination of biochar (BC) and rhamnolipid (RL).Samples of petroleum-contaminated soil (10,30 and 50 g/kg) were amended by BC,BC+ RL and rhamnolipid modified biochar (RMB),*** 60 day's cultivation,the removal rate of total petroleum hydrocarbons (TPHs) for unplanted soil (UP),planted soil (P),planted soil with BC addition (P-BC),planted soil with BC and RL addition (P-BC + RL) and planted soil with addition ofRMB (P-RMB) were 8.6%,19.1%,27.7%,32.4% and 35.1% in soil with TPHs concentration of 30 g/kg,*** with UP,the plantation of Spartina anglica significantly decreased the concentration of C8-14 and tricyclic ***,the application of BC and RMB alleviated the toxicity of petroleum hydrocarbons to Spartina anglica via improving plant growth with increasing plant height,root vitality and total chlorophyll ***-throughput sequencing result indicated that rhizosphere microbial community of Spartina anglica was regulated by the application of BC and RMB,with increase of bacteria and plant mycorrhizal symbiotic fungus in biochar and RMB amended soil.

关键词： Biochar Rhamnolipid Phytoremediation Spartina anglica Petroleum HTS

Research on Equivalent Modeling Method of AC-DC Power Networks Integrating with Renewable Energy Generation

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Energy Engineering 2023年第11期120卷 2469-2487页

作者： Weigang Jin Lei chen Yifei Li Shencong Zheng Yuqi Jiang hongkun chen Central China Branch of State Grid Corporation of China Wuhan430077China School of Electrical Engineering and Automation Wuhan UniversityWuhan430072China

Along with the increasing integration of renewable energy generation in AC-DC power networks,investigating the dynamic behaviors of this complex system with a proper equivalent model is *** paper presents an equivalent modeling method for the AC-DC power networks with doubly-fed induction generator(DFIG)based wind farms to decrease the simulation scale and computational *** the AC-DC power networks,the equivalent modeling strategy in accordance with the physical structure simplification is *** the DFIG-based wind farms,the equivalent modeling based on the sequential identification of multi-machine parameters using the improved chaotic cuckoo search algorithm(ICCSA)is *** light of the MATLAB simulation platform,a two-zone four-DC interconnected power grid with wind farms is built to check the efficacy of the proposed *** simulation analyses and comparative validation in different algorithms and cases,the proposed method can precisely reflect the steady and dynamic performance of the demonstrated system under N-1 and N-2 fault scenarios,and it can efficiently achieve the parameter identification of the wind farms and fulfill the equivalent ***,the proposed approach’s effectiveness and suitability are confirmed.

关键词： Equivalent modeling AC-DC power networks renewable energy generation wind farm improved chaotic cuckoo search algorithm

Fenton Pre-Oxidation Followed by Microbial Degradation for Removing Crude Oil from Contaminated Soil

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China Petroleum Processing & Petrochemical Technology 2019年第3期21卷 81-89页

作者： Gao Chunyang Zhang Yu Han Zhantao Song Quanwei chen Changzhao chen hongkun Zheng Jin Hebei and China Geological Survey Key Laboratory of Groundwater Remediation Institute of Hydrogeology and Environmental GeologyChinese Academy of Geological SciencesShijiazhuang 050061 China University of Geosciences Beijing 100083 State Key Laboratory of Petroleum Pollution Control Beijing 102206 CNPC Research Institute of Safety and Environmental Technology Beijing 102206

Through the Fenton pre-oxidation followed by microbial degradation,this study gave full play to its advantages while avoiding its shortcomings for the remediation of crude oil contaminated *** Fenton reagent coupled with different volumes of H2O2 was applied to the oil contaminated soil and then the microbial agents were introduced to biodegrade the residual oil for 15 *** correlation between the characteristics of residual oil in soil,the changes in soil physical-chemical property after the Fenton pre-oxidation,and the biodegradation were analyzed in this *** results show that the above factors are strongly correlated with the subsequent biodegradation rate,and the order of correlation is as follows:the ratio of TOC to NH4+-N(R^2=0.9513)>the ratio of light oil components to the heavy oil components(R^2=0.9095)>the proportion of hydrocarbons with carbon chain number of less than C23(R^2=0.8259)>the crude oil content(R^2=0.7603)>the soil pH(R^2=0.7492)>the number of microorganisms(R^2=0.6506).During the biodegradation and pre-oxidation reactions of heavy oil components,an appropriate C:N ratio turns out to be the most critical factor in this study.

关键词： crude oil Fenton microbial degradation soil correlation analysis