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A method for assessing and locating protection measurement loop errors based on an improved similarity algorithm 基于改进的相似性算法的保护测量回路误差评估和定位方法
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-19 DOI: 10.1007/s00202-024-02704-1
Zong Jun Mu, Deng Xin Liu, Bin Hu, Zhen Li

It is of importance to detect and locate the errors of the protection measurement loop of the relay protection device for ensuring correct and timely functioning. The complex and changeable power system environment makes error detection and localization challenging. To this end, this paper proposes an entropy weight method-Euclidean distance and Tanimoto similarity (EWM-EDTS)-based method that integrates Euclidean distance and Tanimoto similarity with the entropy weight method. The Euclidean distance algorithm and Tanimoto similarity algorithm are used to calculate and obtain the similarity values between two sequences of samples and then the entropy weight method is used to calculate the weighting coefficients to fuse the two sequences of similarity values to finally obtain the EWM-EDTS distance. By comparing the value of the EWM-EDTS distance with the distance threshold, potential errors in the measurement data can be accurately located and identified. The simulation based on PSCAD shows that the proposed method can significantly improve the accuracy of error detection and localization.

检测和定位继电保护装置保护测量回路的误差对于确保正确及时地运行非常重要。复杂多变的电力系统环境给误差检测和定位带来了挑战。为此,本文提出了一种基于熵权法-欧氏距离和谷本相似性(EWM-EDTS)的方法,该方法将欧氏距离和谷本相似性与熵权法整合在一起。利用欧氏距离算法和谷本相似性算法计算并获得两个样本序列之间的相似性值,然后利用熵权法计算加权系数,将两个序列的相似性值进行融合,最终得到 EWM-EDTS 距离。通过比较 EWM-EDTS 距离值和距离阈值,可以准确定位和识别测量数据中的潜在误差。基于 PSCAD 的仿真表明,所提出的方法可以显著提高误差检测和定位的准确性。
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引用次数: 0
Microgrid energy management with renewable energy using gravitational search algorithm 利用引力搜索算法进行可再生能源微电网能源管理
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-19 DOI: 10.1007/s00202-024-02727-8
T. Praveen Kumar, K. Ajith, M. Srinivas, G. Sunil Kumar

The microgrid energy management with renewable energy is efficiently integrating intermittent sources like solar and wind while ensuring grid stability and reliability is difficult. The gravitational sear search method is employed in MG energy management with renewable energy sources (RESs) to address these problems. The gravitational search technique is used in the proposed method (GSA). In order to build a database of control signals that take into account the power differential between the source and load sides, GSA is used to precisely identify the control signals for the system. The proposed technique’s main goal is to deliver the best performance at the lowest possible cost. The constraints are the availability of the RESs, energy consumption as well as the storage elements’ level of charge. Batteries are utilized as an energy source to steady and allow the renewable power system components to continue operating at a constant and stable output power. The proposed method cost is 1.1$ that is lower than the existing methods. The MATLAB platform is used to implement the proposed method, and its efficacy is assessed in comparison to established techniques like modified PSO (MPSO), genetic algorithm (GA), particle swarm optimization (PSO), and proportional integral controller (PI) (MPSO).

利用可再生能源进行微电网能源管理,既要有效整合太阳能和风能等间歇性能源,又要确保电网的稳定性和可靠性,难度很大。可再生能源微电网能源管理中采用引力搜索法来解决这些问题。所提出的方法(GSA)采用了引力搜索技术。为了建立一个考虑到源侧和负载侧功率差的控制信号数据库,GSA 被用来精确识别系统的控制信号。拟议技术的主要目标是以尽可能低的成本实现最佳性能。制约因素包括可再生能源的可用性、能耗以及存储元件的充电水平。电池作为一种能源,可使可再生能源发电系统组件以恒定稳定的输出功率持续运行。拟议方法的成本为 1.1 美元,低于现有方法。该方法使用 MATLAB 平台实现,并与改进型 PSO (MPSO)、遗传算法 (GA)、粒子群优化 (PSO) 和比例积分控制器 (PI) (MPSO) 等成熟技术进行了功效评估。
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引用次数: 0
Generation expansion planning incorporating the recuperation of older power plants for economic advantage 发电厂扩建规划中纳入老旧发电厂的改造,以提高经济效益
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-19 DOI: 10.1007/s00202-024-02708-x
A. Arunkumar, M. Geetha, A. Ramkumar, A. Bhuvanesh

As power plants age, they will gradually lose their reliability, economic viability, and productivity. They will also emit more carbon dioxide when producing electricity. This study has addressed the retirement and recuperation of the power plants in order to tackle the generation expansion planning (GEP) problem. Recuperation is a factor that benefits the power generating company both environmentally and economically. These requirements have increased the complexity of the GEP issue. Therefore, the utilization of optimization techniques is necessary to address these intricate, limited, and extensive issues. The GEP problem for the Tamil Nadu power system was solved in this study by using one of the most successful optimization techniques, namely particle swarm optimization (PSO), and its variations, such as cooperative coevolving particle swarm optimization (CCPSO) and opposition-based learning competitive particle swarm optimization (OBLCPSO). The real-world GEP problem has been resolved for planning horizons of seven years (2020–2027) and fourteen years (2020–2034). The outcomes showed that the CCPSO algorithm outperformed the competition. The most favorable results have been attained in scenario 4. Compared to the GEP problem without retirement and recuperation, the total cost has dropped by 11.07% and CO₂ emissions by 9.48% once retirement and recuperation are considered. According to the simulation results, retirement and recovery are taken into account in GEP, which considerably lowers overall costs and polluting emissions.

Graphical abstract

随着发电厂的老化,它们将逐渐失去可靠性、经济可行性和生产力。它们在发电时还会排放更多的二氧化碳。本研究探讨了发电厂的退役和恢复问题,以解决发电量扩展规划(GEP)问题。休整是发电公司在环境和经济上都能受益的一个因素。这些要求增加了 GEP 问题的复杂性。因此,有必要利用优化技术来解决这些复杂、有限和广泛的问题。本研究利用最成功的优化技术之一,即粒子群优化(PSO)及其变体,如合作协同粒子群优化(CCPSO)和基于对立学习的竞争粒子群优化(OBLCPSO),解决了泰米尔纳德邦电力系统的 GEP 问题。现实世界中的 GEP 问题已在七年(2020-2027 年)和十四年(2020-2034 年)的规划期限内得到解决。结果表明,CCPSO 算法优于其他竞争算法。方案 4 的结果最为理想。与不考虑退役和休养的 GEP 问题相比,考虑退役和休养后,总成本下降了 11.07%,二氧化碳排放量下降了 9.48%。模拟结果表明,在 GEP 中考虑退役和休养可大大降低总成本和污染排放。
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引用次数: 0
Economic assessment of efficient hydrogen production-based hybrid renewable energy system: OOA-RBFNN approach 基于高效制氢的混合可再生能源系统的经济评估:OOA-RBFNN 方法
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-18 DOI: 10.1007/s00202-024-02634-y
Suresh Muthusamy, R. Suresh Kumar, N. Karthikeyan, P. Rajesh

A sustainable society is thought to be greatly aided by hydrogen (H2) energy as it is a clean and efficient energy source in light of the impending energy revolution and global climate change. Identifying and implementing green H2 production methods is made considerably more difficult by the need for a gradual switch to renewable energy. To address these issues, this study proposes a novel energy management approach for hybrid renewable energy resources (RES) systems using multiple H2 production methods. The proposed approach combines the osprey optimization algorithm (OOA) with a radial basis function neural network (RBFNN), known as the OOA-RBFNN technique. The principal purpose of the proposed strategy is to minimize net system costs. Specifically, OOA is used to lessen the operational cost of a hybrid microgrid consisting of RES. RBFNN is used to predict uncertain renewable energy generation and demand. This work aims to present a strategy for producing hydrogen from solar and wind energy while reducing system costs by using water electrolyzer. The OOA-RBFNN technique is used to define the optimal size and operating energy management of the system. The proposed technique was implemented in the MATLAB platform and compared with various existing techniques like the salp swarm algorithm, convolutional neural network and random forest algorithm. The computation time of the proposed approach is 0.8 s which is lower, and the cost for energy is 23.22$ which is lower than the existing methods.

氢(H2)能源是一种清洁高效的能源,在能源革命和全球气候变化迫在眉睫的情况下,可持续发展的社会被认为会得到极大的帮助。由于需要逐步转向可再生能源,确定和实施绿色氢气生产方法的难度大大增加。为解决这些问题,本研究为使用多种 H2 生产方法的混合可再生能源(RES)系统提出了一种新型能源管理方法。该方法结合了鱼鹰优化算法(OOA)和径向基函数神经网络(RBFNN),即 OOA-RBFNN 技术。拟议战略的主要目的是最大限度地降低系统净成本。具体来说,OOA 用于降低由可再生能源组成的混合微电网的运营成本。RBFNN 用于预测不确定的可再生能源发电量和需求量。这项工作旨在提出一种利用太阳能和风能生产氢气的策略,同时利用水电解槽降低系统成本。OOA-RBFNN 技术用于确定系统的最佳规模和运行能源管理。建议的技术在 MATLAB 平台上实现,并与 salp 蜂群算法、卷积神经网络和随机森林算法等各种现有技术进行了比较。所提方法的计算时间为 0.8 秒,低于现有方法;能源成本为 23.22 美元,低于现有方法。
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引用次数: 0
Analyzing electric vehicle performance considering smooth roads with seasonal variation 分析考虑季节变化的平整道路的电动汽车性能
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-18 DOI: 10.1007/s00202-024-02722-z
Rachna, Amit Kumar Singh

Battery electric vehicles play a crucial role in reducing air pollution; yet, their adoption is hindered by range limitations. This study examines the impact of weather conditions and temperatures on BEV range and battery consumption on smooth roads using a MATLAB Simulink model. Four scenarios—summer, spring, rainy, and winter—were simulated using the world harmonized vehicle cycle over 2000s, measuring state of charge, mean speed, and distance covered. According to the results, spring offers the best circumstances for BEV efficiency at a distance of 3.35 km, with summer following closely behind at 3.349 km. Rainy weather, on the other hand, results in the largest battery use, which is over four times greater than in the summer and covers 3.2 km. With a distance of 3.31 km, winter circumstances also lead to decreased efficiency. The findings reveal that increased friction and lower temperatures in rainy and winter conditions notably increase battery consumption. These findings highlight the importance of integrating weather and temperature considerations into BEV design and standards for improving thermal management and battery technologies to advance sustainable transportation.

电池电动汽车在减少空气污染方面发挥着至关重要的作用;然而,续航里程的限制阻碍了它们的应用。本研究使用 MATLAB Simulink 模型研究了天气条件和温度对电池电动汽车在平整道路上的续航里程和电池消耗量的影响。使用 2000 年代的世界统一车辆周期模拟了四种情景--夏季、春季、雨季和冬季,测量了充电状态、平均速度和行驶距离。结果表明,春季的电动汽车效率最高,行驶距离为 3.35 公里,夏季紧随其后,行驶距离为 3.349 公里。另一方面,雨天的电池使用量最大,是夏季的四倍多,行驶距离为 3.2 公里。冬季的行驶距离为 3.31 公里,同样导致效率下降。研究结果表明,在雨天和冬季,摩擦力增加和温度降低会显著增加电池消耗量。这些发现凸显了将天气和温度因素纳入电动汽车设计和标准的重要性,从而改进热管理和电池技术,推动可持续交通的发展。
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引用次数: 0
Optimizing power management for wind energy integration with SVC support using hybrid optimization 利用混合优化技术优化风能集成的电力管理,为 SVC 提供支持
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-18 DOI: 10.1007/s00202-024-02690-4
Belkacem Mahdad

Recent years have seen a strong push to incorporate a wider variety of renewable sources (RS) into modern power systems. The intermittent nature of these renewable sources presents a vital challenge. Experts and researchers must develop adaptable and robust planning strategies to successfully integrate with security higher levels of wind and solar power into the grid. This research presents a stochastic optimal power flow (SOPF) strategy designed to mitigate the intermittent nature of multiple wind power sources by effectively coordinating them with multiple shunt (SVCs) based on FACTS technology. To accurately solve complex problems with multiple conflicting objective functions, a hybrid method combining the Pelican Optimizer (PO) and Coati Optimization Algorithm (COA) is effectively applied to optimize various objective functions, including total cost, power loss, voltage deviation, margin loading stability and contingencies. The main particularity of the proposed hybrid method, namely POCOA, compared to the standard PO and to the COA is related to its high ability to create flexible balance between exploration and exploitation during search process, which makes the POCOA more accurate to locate the near global solution at a competitive time. The proposed POCOA was validated on unimodal and multimodal benchmark functions, as well as the modified IEEE 30-Bus electric test system. Comparative study with other recent techniques confirmed its high competitive aspect in terms of solution quality and convergence behaviors.

近年来,人们大力推动将更多种类的可再生能源(RS)纳入现代电力系统。这些可再生能源的间歇性带来了严峻的挑战。专家和研究人员必须制定适应性强、稳健的规划策略,以成功地将安全性更高的风能和太阳能发电并入电网。本研究提出了一种随机优化功率流 (SOPF) 策略,旨在通过基于 FACTS 技术的多路并联 (SVC) 有效协调多路风电,从而缓解多路风电的间歇性。为了准确解决具有多个目标函数冲突的复杂问题,我们采用了一种结合鹈鹕优化器(PO)和 Coati 优化算法(COA)的混合方法,以有效优化各种目标函数,包括总成本、功率损耗、电压偏差、裕度负荷稳定性和突发事件。与标准 PO 和 COA 相比,所提出的混合方法(即 POCOA)的主要特点在于其在搜索过程中能够在探索和利用之间建立灵活的平衡,这使得 POCOA 能够更准确地在有竞争力的时间内找到接近全局的解决方案。所提出的 POCOA 在单模态和多模态基准函数以及修改后的 IEEE 30 总线电力测试系统上进行了验证。与其他最新技术的比较研究证实,POCOA 在求解质量和收敛行为方面具有很强的竞争力。
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引用次数: 0
Distribution network fault regionalized localization based on improved dung beetle optimization 基于改进型蜣螂优化的配电网故障区域化定位
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-18 DOI: 10.1007/s00202-024-02716-x
Wanyong Liang, Chenbo Zhai, Weifeng Cao, Yong Jiang, Yanzhao Si, Lintao Zhou

Aiming at the problems of accuracy degradation and slow convergence speed of traditional intelligent optimization algorithms in solving distribution network fault localization. A spiral search based multi-strategy dung beetle optimization (SMSDBO) algorithm is proposed for active distribution network fault localization. First, the hierarchical topology model of distribution network with fault tolerance is constructed, and all the segments and nodes of the distribution network are divided into different regions according to the principle of equivalence. Second, the population is initialized by logistic-Tent chaotic mapping to make the population distribution uniform, and an improved sinusoidal algorithm is added to balance the global and local search ability. Then, incorporating the spiral search strategy into the algorithm helps the algorithm to jump out of the local optimum at a later stage. Simulation experiments on distribution networks in MATLAB. Simulation results show that the combination of the SMSDBO algorithm and the hierarchical model has superior localization capabilities in single-fault, multi-fault, and information distortion fault localization. The accuracy and speed are better than the comparison algorithm and traditional model.

针对传统智能优化算法在解决配电网故障定位时精度下降和收敛速度慢的问题。提出了一种基于螺旋搜索的多策略蜣螂优化算法(SMSDBO),用于主动配电网故障定位。首先,构建具有容错能力的配电网分层拓扑模型,并根据等价原则将配电网的所有网段和节点划分为不同的区域。其次,利用 logistic-Tent 混沌映射对种群进行初始化,使种群分布均匀,并加入改进的正弦算法,以平衡全局和局部搜索能力。然后,在算法中加入螺旋搜索策略,帮助算法在后期跳出局部最优。在 MATLAB 中对配电网络进行仿真实验。仿真结果表明,SMSDBO 算法与层次模型相结合,在单故障、多故障和信息失真故障定位方面都具有卓越的定位能力。其精度和速度均优于对比算法和传统模型。
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引用次数: 0
Rule based coordinated source and demand side energy management of a remote area power supply system 基于规则的偏远地区供电系统协调源和需求侧能源管理
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-18 DOI: 10.1007/s00202-024-02671-7
Anjali Mohan, Karthik Thirumala, J. Jude Prakash, G. Saravana Ilango

The electrification and extension of conventional grid in remote areas is still a major challenge in developing countries. This can be addressed with an integration and management of renewable energy sources and energy storage systems to the remote network. This paper aims to develop a Rule-based Smart Energy Management System (RBSEMS) paradigm for Remote area power supply (RAPS) systems to implement simultaneous source-side and demand-side energy management. The uninterrupted power supply and reduction of electricity cost is the primary objective of the work. Besides, in the multi-objective framework, reduction of dependency on the grid is considered along with the primary objective. The remote area power system controllers are modelled to provide a seamless transition between different modes of operation of energy sources and respond to RBSEMS signals without much delay. The RAPS test system consisting of schedulable and non-schedulable loads, solar PV, wind energy system, battery energy storage system, utility grid along with its controllers are modelled in MATLAB Simulink to validate the RBSEMS. The comprehensive analysis and simulation results of various cases present the effectiveness of the proposed approach on the modelled RAPS system. Four performance indices are also presented to highlight the merits of the proposed work. The overall cost is decreased by 11.56% in case 2B, when primary objective is considered alone. When primary and secondary objectives are considered together, the overall cost is decreased by 3.69% in case 3B but the independent performance index is improved from 0.7815 to 0.836 indicating the reduced grid dependency. The response time of the modelled local controllers of the system is found to be 24.2 ms, which is acceptable for an interval of 0.25 s.

在发展中国家,偏远地区的电气化和常规电网的扩展仍然是一项重大挑战。可再生能源和储能系统与偏远地区电网的整合和管理可以解决这一问题。本文旨在为偏远地区供电(RAPS)系统开发基于规则的智能能源管理系统(RBSEMS)范例,以同时实施源端和需求端的能源管理。不间断供电和降低用电成本是这项工作的首要目标。此外,在多目标框架中,减少对电网的依赖也是首要目标之一。远程区域电力系统控制器的建模旨在提供不同能源运行模式之间的无缝转换,并无延迟地响应 RBSEMS 信号。为验证 RBSEMS,在 MATLAB Simulink 中对由可调度和不可调度负载、太阳能光伏发电系统、风能系统、电池储能系统、公用电网及其控制器组成的 RAPS 测试系统进行了建模。对各种情况的综合分析和仿真结果表明了所提方法在建模的 RAPS 系统中的有效性。此外,还介绍了四项性能指标,以突出拟议工作的优点。在案例 2B 中,当单独考虑主要目标时,总成本降低了 11.56%。当同时考虑主要目标和次要目标时,情况 3B 的总成本降低了 3.69%,但独立性能指数从 0.7815 提高到了 0.836,这表明电网依赖性降低了。模拟的系统本地控制器的响应时间为 24.2 毫秒,对于 0.25 秒的时间间隔来说是可以接受的。
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引用次数: 0
Robot dynamics-based cable fault diagnosis using stacked transformer encoder layers 利用堆叠式变压器编码器层进行基于机器人动力学的电缆故障诊断
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-18 DOI: 10.1007/s00202-024-02718-9
Heonkook Kim

Industrial robots play a vital role in manufacturing systems, engaging in tasks such as welding, painting, and assembling. To prevent catastrophic manufacturing stoppage, it is essential to diagnose faults in control cables of robots in time. This paper proposes a hybrid fault diagnosis method that integrates a robot dynamic model with deep learning-based fault diagnosis to classify the severity of cable faults. Specifically, the proposed method incorporates both the measured torques obtained from measured currents and nominal torques from the dynamic model, achieving robust cable fault diagnosis under varying operating conditions. The measured cable current signals that contain the fault information are used to calculate the joint torques, and a robot dynamic model is used to obtain the nominal joint torques using joint angles and angular velocities. Subsequently, a stacked transformer encoder-based classifier is constructed with the obtained torque disparities as inputs and fault severity probabilities as outputs. Experimental results validate that the proposed fault diagnosis method provides higher accuracy compared to existing methods, highlighting the efficacy of integrating a dynamic model with learning-based fault diagnosis. Furthermore, we conducted a quantitative and qualitative comparison between our proposed method and other recent fault diagnosis methods.

工业机器人在制造系统中扮演着重要角色,从事焊接、喷涂和组装等任务。为防止灾难性的制造停工,及时诊断机器人控制电缆的故障至关重要。本文提出了一种混合故障诊断方法,将机器人动态模型与基于深度学习的故障诊断相结合,对电缆故障的严重程度进行分类。具体来说,该方法将测量电流获得的测量力矩和动态模型获得的额定力矩结合在一起,实现了在不同运行条件下对电缆故障的稳健诊断。包含故障信息的电缆电流测量信号用于计算关节扭矩,而机器人动态模型则利用关节角度和角速度获得标称关节扭矩。随后,以获得的扭矩差异为输入,以故障严重性概率为输出,构建了基于叠加变压器编码器的分类器。实验结果证明,与现有方法相比,所提出的故障诊断方法具有更高的准确性,突出了将动态模型与基于学习的故障诊断相结合的功效。此外,我们还对所提出的方法和其他最新的故障诊断方法进行了定量和定性比较。
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引用次数: 0
ILADRC resonance suppression control strategy for multiple parallel photovoltaic energy storage GFL VSG microgrid 多并联光伏储能 GFL VSG 微电网的 ILADRC 共振抑制控制策略
IF 1.8 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-16 DOI: 10.1007/s00202-024-02706-z
Zuobin Zhu, Shumin Sun, Shaoping Huang

High proportion of distributed photovoltaic integration into power system has led to power system presenting weak or extremely weak power grid state. Under weak power grid or grid harmonic background high penetration distributed photovoltaic GFL converters are prone to lead to system instability. To suppress distributed photovoltaics grid connection resonance, ILADRC method multiple parallel photovoltaic storage GFL VSG system control strategy is proposed. Firstly, stability analysis of single photovoltaic energy storage GFL VSG system and multiple parallel photovoltaic energy storage GFL VSG system is, respectively, performed. Through impedance stability analysis, it can be concluded that multiple parallel photovoltaic energy storage GFL VSG system is prone to resonance in weak power grid or grid harmonic background. Secondly, to suppress system resonance, ILADRC GFL VSG controller is designed, and ILADRC photovoltaic energy storage GFL VSG system impedance model is established for stability analysis. System output impedance amplitude of LADRC method is larger than that of LADRC/unimproved method, and it has a stronger ability to attenuate harmonics in the power grid. Finally, ILADRC multiple parallel photovoltaic energy storage GFL VSG simulation model and hardware in the loop experimental platform are established for tests. By tests shows that harmonic content of unimproved method system is, respectively, as high as 26.57% and 24.29% under weak power grid and grid harmonic background, LADRC method system harmonic content is, respectively, 6.78% and 10.57% under weak current and grid harmonic background, ILADRC method system harmonic content is, respectively, reduced to 1.55% and 2.55% under weak power and grid harmonic background. This indicates ILADRC method system has better resonance suppression ability under weak current net or grid harmonic background, compared to LADRC/unimproved method.

高比例的分布式光伏发电并入电力系统,导致电力系统呈现弱电网或极弱电网状态。在弱电网或电网谐波背景下,高渗透率分布式光伏 GFL 变流器容易导致系统不稳定。为抑制分布式光伏并网谐振,提出了ILADRC方法多并联光伏储能GFL VSG系统控制策略。首先,分别对单光伏储能 GFL VSG 系统和多并联光伏储能 GFL VSG 系统进行了稳定性分析。通过阻抗稳定性分析,可以得出结论:多路并联光伏储能 GFL VSG 系统在弱电网或电网谐波背景下容易发生共振。其次,为抑制系统谐振,设计了 ILADRC GFL VSG 控制器,并建立了 ILADRC 光伏储能 GFL VSG 系统阻抗模型进行稳定性分析。LADRC方法的系统输出阻抗幅值大于LADRC/未改进方法的系统输出阻抗幅值,对电网谐波的衰减能力更强。最后,建立了 ILADRC 多并联光伏储能 GFL VSG 仿真模型和硬件在环实验平台进行测试。通过测试表明,在弱电网和电网谐波背景下,未改进方法系统的谐波含量分别高达 26.57% 和 24.29%;在弱电流和电网谐波背景下,LADRC 方法系统的谐波含量分别为 6.78% 和 10.57%;在弱电和电网谐波背景下,ILADRC 方法系统的谐波含量分别降至 1.55% 和 2.55%。这表明,与 LADRC/未改进方法相比,ILADRC 方法系统在弱电网或电网谐波背景下具有更好的谐振抑制能力。
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引用次数: 0
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Electrical Engineering
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