Chinese Journal of Electrical Engineering最新文献_第2页

Study on the Optimization for Reactive Power Regulation of Synchronous Condenser Based on Single Neuron Adaptive PID*

Chinese Journal of Electrical Engineering Pub Date : 2025-03-01 DOI: 10.23919/CJEE.2025.000109

Lin Wang;Honghua Wang

{"title":"Study on the Optimization for Reactive Power Regulation of Synchronous Condenser Based on Single Neuron Adaptive PID*","authors":"Lin Wang;Honghua Wang","doi":"10.23919/CJEE.2025.000109","DOIUrl":"https://doi.org/10.23919/CJEE.2025.000109","url":null,"abstract":"A synchronous condenser (SC) is used to maintain grid voltage stability owing to its bidirectional fast reactive power regulation ability and good dynamic characteristics. To address the issue of dynamic voltage instability in power system during failures or heavy inductive loads, an SC reactive power regulation optimization method based on single neuron adaptive PID (SNA-PID) combined with whale optimization algorithm (WOA) is proposed. This approach aims to overcome the limitations of normal PID controllers. A simulation model of the SC reactive power regulation system, based on SNA-PID combined with the WOA, is established using Matlab. The parameters of the SNA-PID are optimized by the WOA with the ITAE criterion under two typical operation situations of the power system: one is to set three different degrees of short-circuit ground faults, and the other is to access three different three-phase resistive loads. Compared to conventional PID control, as the degree of short-circuit ground faults increases and the three-phase resistive load resistance decreases, the SC reactive power regulation optimization method based on SNA-PID combined with the WOA can still reduce the voltage recovery time and voltage oscillation, while maintaining voltage stability. Simulation results show that the proposed method exhibits better dynamic adjustment characteristics and adaptive ability.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"11 1","pages":"184-193"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10955296","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hopf Bifurcation and Coexisting Attractors in Power Electronic Converters: An Overview of the Mechanisms of Occurrence and Case Studies*

Chinese Journal of Electrical Engineering Pub Date : 2025-03-01 DOI: 10.23919/CJEE.2025.000097

Fan Xie;Ronglong Wang;Zhiqiang Yang;Haoyu Wu;Bo Zhang

引用次数: 0

Review of HVDC Tap

Chinese Journal of Electrical Engineering Pub Date : 2025-03-01 DOI: 10.23919/CJEE.2025.000110

Chong Qiu;Songtao Huang;Yihua Hu

引用次数: 0

Multi-rate Co-simulation Framework with Taylor-series-based Variable-step Solver for Grid-connected Power Converters*

Chinese Journal of Electrical Engineering Pub Date : 2025-03-01 DOI: 10.23919/CJEE.2025.000111

Weicheng Liu;Zhengming Zhao;Han Xu;Yangbin Zeng;Liqiang Yuan

{"title":"Multi-rate Co-simulation Framework with Taylor-series-based Variable-step Solver for Grid-connected Power Converters*","authors":"Weicheng Liu;Zhengming Zhao;Han Xu;Yangbin Zeng;Liqiang Yuan","doi":"10.23919/CJEE.2025.000111","DOIUrl":"https://doi.org/10.23919/CJEE.2025.000111","url":null,"abstract":"Grid-connected converters (GPC) are playing an increasingly important role in distribution networks. Performing electromagnetic transient (EMT) simulations on power electronics and distribution networks can significantly improve the analysis accuracy. However, the existing simulation software struggles to handle distribution networks with a large number of power electronic switches, leading to unacceptable simulation times. To address this issue, a system-hierarchical multi-rate co-simulation framework is proposed. The system is hierarchically divided into different rate subsystems based on timescales, and solvers with different simulation rates are used to solve them separately. A Taylor-series-based variable-step solver is proposed for power electronic systems, and numerical compensation algorithms are designed for multi-rate interfaces to improve the system stability and accuracy. Compared with commercial software, the proposed framework increased the simulation speed by more than 200 times in the studied case, involving 576 switching devices and 14 bus distribution networks, while contributing less than 1% to the relative error.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"11 1","pages":"59-73"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10955323","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of Lightweight Oriented Offshore Wind Power Transmission Schemes*

Chinese Journal of Electrical Engineering Pub Date : 2025-03-01 DOI: 10.23919/CJEE.2025.000098

Yanfeng Wang;Shuxin Luo;Mengze Yu;Lingyun Yang;Jun Huang;Zhicong Huang

{"title":"Review of Lightweight Oriented Offshore Wind Power Transmission Schemes*","authors":"Yanfeng Wang;Shuxin Luo;Mengze Yu;Lingyun Yang;Jun Huang;Zhicong Huang","doi":"10.23919/CJEE.2025.000098","DOIUrl":"https://doi.org/10.23919/CJEE.2025.000098","url":null,"abstract":"The use of renewable energy is essential for addressing global climate change, and offshore wind power plays a critical role in achieving this goal. As nearshore resources become saturated, the focus of offshore wind power development is shifting to deep-sea areas. Deep-sea wind power transmission schemes must prioritize lightweight designs and low costs to enhance overall economic and technical feasibility. Currently, four lightweight offshore wind power transmission schemes have been identified: low-frequency alternating current (LFAC) transmission, high-voltage direct current (HVDC) transmission utilizing uncontrolled diode rectifier units (DRU-HVDC), DRU-MMC parallel-connection hybrid rectifier transmission (PCDRU-MMC), and DRU-MMC series-connection hybrid rectifier transmission (SCDRU-MMC). Four schemes are examined, advantages and disadvantages in various scenarios are outlined, technical performance are analyzed. A comprehensive economic assessment of each scheme is conducted for deep-sea environments far from load centers. The results indicate that LFAC transmission effectively reduces transmission losses, whereas DRU-HVDC has limitations in terms of voltage support and black-start capability. In contrast, hybrid rectification solutions such as PCDRU-MMC and SCDRU-MMC combine the economic benefits of DRU-HVDC with the flexibility of modular multilevel converters (MMCs), thereby enhancing system reliability and efficiency.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"11 1","pages":"16-39"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10955301","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Minimizing Power Losses in Distribution Networks: A Comprehensive Review 最大限度地减少配电网络的电力损耗：一个全面的回顾

Chinese Journal of Electrical Engineering Pub Date : 2024-12-01 DOI: 10.23919/CJEE.2024.000093

Emad Hussen Sadiq;Rakan Khalil Antar

{"title":"Minimizing Power Losses in Distribution Networks: A Comprehensive Review","authors":"Emad Hussen Sadiq;Rakan Khalil Antar","doi":"10.23919/CJEE.2024.000093","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000093","url":null,"abstract":"The voltage generated by power plants is increased using step-up transformers and then transferred using high-voltage transmission lines. In a distribution system, the voltage is stepped down to certain levels and is utilized by consumers. The losses in distribution networks are very high compared with the transmission line losses because of the high value of the line resistance (R) compared with the reactance (X), high current, and low voltage. Distribution companies have an economic incentive to minimize network losses. Generally, the incentive is the difference between the actual losses and standard losses. Therefore, when the actual losses are greater than the standard losses, distribution companies are fined. If the actual losses are less than the standard losses, distribution companies earn profits. Consequently, the issue of power losses in distribution networks has attracted the attention of researchers. Numerous methods and techniques have been examined and implemented to reduce distribution system losses. These methods differ based on the selection of the loss reduction mechanism, formulation of the problem, technique utilized, and solution obtained. Many techniques are used to minimize losses, such as power factor correction, reconfiguration, distributed generation allocation, load balancing, voltage upgrades, and conductor upgrades. In this study, a literature review, general background on distribution loss minimization, and a comprehensive comparison of the main techniques are presented to examine the best methods for minimizing power losses.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 4","pages":"20-36"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10820901","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142918116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Evaluation of a Multi-input Interleaved Boost Converter with a Tuned Proportional-integral Controller 带调谐比例积分控制器的多输入交错升压变换器的性能评价

Chinese Journal of Electrical Engineering Pub Date : 2024-12-01 DOI: 10.23919/CJEE.2024.000094

Sucharita Pal;Dola Sinha;Mou Das Mahapatra;Saibal Majumder;Sovan Bhattacharya;Chandan Bandyopadhyay

{"title":"Performance Evaluation of a Multi-input Interleaved Boost Converter with a Tuned Proportional-integral Controller","authors":"Sucharita Pal;Dola Sinha;Mou Das Mahapatra;Saibal Majumder;Sovan Bhattacharya;Chandan Bandyopadhyay","doi":"10.23919/CJEE.2024.000094","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000094","url":null,"abstract":"The need for renewable energy access has led to the use of variable input converter approaches because renewable energy sources often generate electricity in an unpredictable manner. A high-performance multi-input boost converter is developed to provide the necessary output voltage and power while accommodating variations in input sources. This converter is specifically designed for the efficient usage of renewable energy. The proposed architecture integrates three separate unidirectional input power sources: photovoltaics, fuel cells, and storage system batteries. The architecture has five switches, and the implementation of each switch in the converter is achieved by applying the calculated duty ratios in various operating states. The closed-loop response of the converter with a proportional-integral (PI) controller-based switching system is examined by analyzing the Matlab-Simulink model utilizing a proportional-integral derivative (PID) tuner. The controller can deliver the desired output voltage of 400 V and an average power of 2 kW while exhibiting low switching transient effects. Therefore, the proposed multi-input interleaved boost converter demonstrates robust results for real-time applications by effectively harnessing renewable power sources.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 4","pages":"119-128"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10820899","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142918235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sliding-Mode Observer-Based Grid Voltage-Observation Method with Frequency-Fixed Dual SOGI and Cross-Compensated Phase-Locked Loop 基于滑动模式观测器的电网电压观测方法与频率固定的双 SOGI 和交叉补偿锁相环路

Chinese Journal of Electrical Engineering Pub Date : 2024-09-01 DOI: 10.23919/CJEE.2024.000090

Leilei Guo;Qingyang Ye;Nan Jin;Zhenkun Liu;Zhenjun Wu

{"title":"Sliding-Mode Observer-Based Grid Voltage-Observation Method with Frequency-Fixed Dual SOGI and Cross-Compensated Phase-Locked Loop","authors":"Leilei Guo;Qingyang Ye;Nan Jin;Zhenkun Liu;Zhenjun Wu","doi":"10.23919/CJEE.2024.000090","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000090","url":null,"abstract":"Conventional sliding-mode observer (SMO)-based grid-voltage observation methods often require a low-pass filter (LPF) to remove high-frequency sliding-mode noise. However, a complicated phase- and amplitude-compensation method, which is highly sensitive to the DC-offset, is required. A frequency-adaptive dual second-order generalized integrator (SOGI) can be used to replace the LPF, eliminating the compensation link and the effects of the DC-offset; however, strong coupling is introduced between the front-end SOGI block and back-end phase-locked loop (PLL) block, thereby reducing the dynamic performance. To solve this problem, this study proposes an SMO-based grid-voltage observation method with a frequency-fixed dual SOGI and cross-compensated PLL that can eliminate the frequency coupling between the front-end SOGI block and back-end PLL blocks, thereby increasing its dynamic performance. In this study, the phase and amplitude are compensated simultaneously using the proposed cross-compensation method, achieving an accurate observation of the grid voltage under off-nominal frequencies. An analysis of the small-signal model theoretically verified that the proposed method has good dynamic performance. Finally, the superiority of the proposed method is verified through comparative experiments.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"37-49"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intelligent Energy Management Strategy and Sizing Methodology for Hybrid Systems in Isolated Regions 偏远地区混合动力系统的智能能源管理策略和规模确定方法

Chinese Journal of Electrical Engineering Pub Date : 2024-09-01 DOI: 10.23919/CJEE.2024.000091

Moufida Saadi;Dib Djalel;Billel Meghni;Djamila Rekioua

{"title":"Intelligent Energy Management Strategy and Sizing Methodology for Hybrid Systems in Isolated Regions","authors":"Moufida Saadi;Dib Djalel;Billel Meghni;Djamila Rekioua","doi":"10.23919/CJEE.2024.000091","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000091","url":null,"abstract":"In this study, a comprehensive approach is presented for the sizing and management of hybrid renewable energy systems (HRESs) that incorporate a variety of energy sources, while emphasizing the role of artificial neural networks (ANNs) in system management. For optimal sizing of an HRES, the monthly average method wherein historical weather data are used to calculate the monthly averages of solar irradiance and wind speed, offering a well-balanced strategy for system sizing. This ensures that the HRES is appropriately scaled to meet the actual energy requirements of the specified location, avoiding the pitfalls of over- and under-sizing, and thereby enhancing the operational efficiency. Furthermore, the study details a cutting-edge strategy that employs ANNs for managing the inherent complexities of HRESs. It elaborates on the design, modeling, and control strategies for the HRES components by utilizing Matlab/Simulink for implementation. The findings demonstrate the proficiency of the ANN -based power manager in determining the operational modes guided by a specifically designed flowchart. By integrating ANN-driven energy management strategies into an HRES, the proposed approach marks a significant advancement in system adaptability, precision control, and efficiency, thereby maximizing the effective utilization of renewable resources.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"50-62"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707120","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design-Oriented Transient Stability Assessment for Droop-Controlled Converter Considering Grid Voltage Phase-Angle Jump 考虑电网电压相角跳变的降压控制变流器瞬态稳定性评估--以设计为导向

Chinese Journal of Electrical Engineering Pub Date : 2024-09-01 DOI: 10.23919/CJEE.2024.000092

Pingjuan Ge;Hailiang Xu;Ruitong Mao;Chunming Tu;Fan Xiao;Qi Guo

{"title":"Design-Oriented Transient Stability Assessment for Droop-Controlled Converter Considering Grid Voltage Phase-Angle Jump","authors":"Pingjuan Ge;Hailiang Xu;Ruitong Mao;Chunming Tu;Fan Xiao;Qi Guo","doi":"10.23919/CJEE.2024.000092","DOIUrl":"https://doi.org/10.23919/CJEE.2024.000092","url":null,"abstract":"Droop-controlled voltage-source converters (VSCs) can provide frequency and voltage support to power grids. However, during a grid fault, VSCs may experience transient instability, which can be significantly affected by both the control parameters and fault conditions. This mechanism has not been fully elucidated in previous studies. In particular, grid-voltage faults are commonly accompanied by a grid voltage phase-angle jump (VPAJ), which is typically ignored in the evaluation of the transient stability of VSCs. To address this issue, this study comprehensively assesses the impact of the VPAJ and key control parameters on the transient characteristics of VSCs. Furthermore, the critical clearing angle and critical clearing time are quantitatively calculated to define the transient stability boundary. In addition, a transient stability-enhancement control method that considers the transient stability constraints is proposed. Finally, simulations and experimental tests are conducted to validate both the theoretical analysis and proposed method.","PeriodicalId":36428,"journal":{"name":"Chinese Journal of Electrical Engineering","volume":"10 3","pages":"63-76"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707124","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0