Electric Power Systems Research最新文献

A risk- and upside-aware contracting strategy methodology for renewable-composed generation companies

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-18 DOI: 10.1016/j.epsr.2025.111493

Carolina Blank , Carlos Kebudi , Bruno Fanzeres , Olavo Bet

{"title":"A risk- and upside-aware contracting strategy methodology for renewable-composed generation companies","authors":"Carolina Blank , Carlos Kebudi , Bruno Fanzeres , Olavo Bet","doi":"10.1016/j.epsr.2025.111493","DOIUrl":"10.1016/j.epsr.2025.111493","url":null,"abstract":"<div><div>With a massive penetration of renewable energy observed in the past years, appropriately adjusting its portfolio of contracts is critical for Generation Companies (GenCos). In this context, most decision-making methodologies have as a composition the expected reward and risk-measure functionals as a foundation. However, one point typically overlooked by this standard framework is the absence of an appropriate treatment of the financial upside. Therefore, this work presents an alternative decision-making framework to prescribe risk- and upside-aware forward-contracting strategies for renewable-composed GenCos. Structurally, for a given threshold level that partitions the cash-flow probability distribution function into upside and downside regions, an upside-adjusted-by-risk value functional is derived. The resulting portfolio allocation model falls within the class of a non-convex optimization problem, for which we also devise an efficient reformulation procedure to recast the methodology into a convex optimization problem. To illustrate the applicability and validate the efficiency of the proposed methodology, two case studies were conducted, comparing the proposed methodology with the standard “<em>risk-reward</em>” decision-making framework. Overall, we observed that the risk faced by the GenCo using the proposed methodology is slightly higher when compared to the standard “<em>risk-reward</em>” decision-making framework, but the upside level is non-negligibly higher. Therefore, the proposed portfolio allocation methodology efficiently accounts for the problem’s uncertain factors with an adequate balance between downside and upside levels.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111493"},"PeriodicalIF":3.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distributed continuous-time unit commitment with energy storage in multi-area networks

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-18 DOI: 10.1016/j.epsr.2025.111526

Bishal Lamichhane , Yu Christine Chen , Alfredo Garcia

{"title":"Distributed continuous-time unit commitment with energy storage in multi-area networks","authors":"Bishal Lamichhane , Yu Christine Chen , Alfredo Garcia","doi":"10.1016/j.epsr.2025.111526","DOIUrl":"10.1016/j.epsr.2025.111526","url":null,"abstract":"<div><div>This paper proposes a distributed solution for multi-area unit commitment (UC) problem with continuous-time energy generation and storage, offering an enhanced operation tool that leverages the available operational flexibility resources via higher fidelity modeling to enable effective resource sharing among areas via coordinated continuous-time interconnection power exchange. The proposed methodology involves formulating a variational multi-area UC problem with energy storage where decision variables (including power, energy, and commitment statuses) are modeled as continuous-time trajectories and ramping is defined as the time-derivative of the respective power trajectory. The variational multi-area UC problem is then projected into Bernstein function space, leading to a mixed-integer linear programming (MILP) problem with Bernstein coefficients of dispatch and commitment status trajectories as decision variables. The function space-based multi-area UC problem is then decomposed into per-area UC sub-problems solved using a distributed algorithm. Implemented on two different test networks and compared against the benchmark centralized and traditional discrete-time solutions, the numerical results highlight the solution accuracy and efficacy of the proposed distributed method to achieve optimal decisions on interconnection power exchanges such that the energy and ramping needs of all participating areas are met.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111526"},"PeriodicalIF":3.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimized design coordination of a single phase static VAr compensator for AC railway traction

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-18 DOI: 10.1016/j.epsr.2025.111502

Soham Chakraborty , Dipten Maiti , Susovan Mukhopadhyay , Abanishwar Chakrabarti , Sujit K. Biswas

{"title":"Optimized design coordination of a single phase static VAr compensator for AC railway traction","authors":"Soham Chakraborty , Dipten Maiti , Susovan Mukhopadhyay , Abanishwar Chakrabarti , Sujit K. Biswas","doi":"10.1016/j.epsr.2025.111502","DOIUrl":"10.1016/j.epsr.2025.111502","url":null,"abstract":"<div><div>Static VAr Compensators are widely used in single-phase railway-traction for variable reactive-power compensation and voltage support. This paper proposes an offline-optimized design of a single-phase static VAr compensator for traction applications. The proposed design is constituted optimally using a thyristor controlled reactor (TCR), fixed-capacitor (FC), a 3rd harmonic series-tuned filter and a coupling-reactor. The LC filter bypasses TCR 3rd harmonic current. The FC also offers low-impedance path to higher-order harmonics whereas the coupling-reactor damps residual harmonics. The proposed design has lesser number of passive components (five components), reduced size (44 % lesser passive components) compared to classical-schemes and yet limits the current harmonic-distortion below maximum permissible limit (5 %THD, IEEE Std.-519–2022) at all load conditions. The overall volt-ampere consumed by filter circuit elements is also reduced by 75 % compared to classical-scheme which in turn reduces the overall rated-VA of SVC components. The proposed design has least chances of resonance with source-inductance, and performs irrespective of source short-circuit ratio. An offline-optimized iterative design method including a particle swarm optimization is described for minimal component count and size of SVC with minimum line-current THD which is a challenge in 1-phase SVC. The simulation and experimental results are presented to support the proposed scheme.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"243 ","pages":"Article 111502"},"PeriodicalIF":3.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution system planning considering analytical reliability and regulated monopoly

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-18 DOI: 10.1016/j.epsr.2025.111504

Aprajay Verma, K. Shanti Swarup

{"title":"Distribution system planning considering analytical reliability and regulated monopoly","authors":"Aprajay Verma, K. Shanti Swarup","doi":"10.1016/j.epsr.2025.111504","DOIUrl":"10.1016/j.epsr.2025.111504","url":null,"abstract":"<div><div>Distribution system planning is a multifaceted topic with physical, financial and regulatory aspects. The regulator arbitrates between the end customer and the utility to ensure a fair tariff from the customers. The increased penetration of renewable energy is accelerated by Distributed Generation Corporation (DGENCO) through distributed generation. The existing distribution planning paradigms do not incorporate regulator’s rate setting process alongwith independent DGENCO. Therefore, in this paper, the distribution planning is modeled as complete information sequential game with regulator, Distribution Network Operator (DNO) and DGENCO as agents. The proposed sequential game is solved by backward induction technique which translates to a tri-level optimization problem. The regulator’s model include the rate setting process, the DNO model incorporates extensive multistage distribution expansion planning formulation including reliability constraints, whereas the DGENCO models the selling of power through the process of Power Purchase Agreement (PPA). Moreover, an analytical reliability evaluation formulation that can model the effect of tie lines and bus coupler in reliability metric is also proposed. The proposed model was solved through a Mixed Integer Bilevel Linear Program (MIBLP) framework. The multistage integer non-linear model was transformed to MIBLP through Mccormick relaxations. Distribution planning with classical regulatory models are conducted on a 6 bus system and 13 bus radial system. The large memory requirement and computation times of the proposed model as discussed. The Price Cap Regulation (RPI) was proven more conducive for implementing cost reducing technologies, whereas the Cost of Service Regulation (COSR) delivered better reliability. The proposed methodology can test the potential impact of a regulatory policy on the service quality and network upgradation.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"243 ","pages":"Article 111504"},"PeriodicalIF":3.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance enhancement of a multilevel inverter in renewable energy systems using equilibrium optimizer

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-18 DOI: 10.1016/j.epsr.2025.111538

Chang-Hua Lin , Shoeb Azam Farooqui , Hwa-Dong Liu , Adil Sarwar , Mohammad Zaid , Javed Ahmad

{"title":"Performance enhancement of a multilevel inverter in renewable energy systems using equilibrium optimizer","authors":"Chang-Hua Lin , Shoeb Azam Farooqui , Hwa-Dong Liu , Adil Sarwar , Mohammad Zaid , Javed Ahmad","doi":"10.1016/j.epsr.2025.111538","DOIUrl":"10.1016/j.epsr.2025.111538","url":null,"abstract":"<div><div>This paper introduces the Equilibrium Optimizer (EO) to enhance the performance of a single phase (1-ϕ) five-level (5L) T-type multilevel inverter (T-MLI) in renewable energy systems (RES). The primary objective is to optimize the switching angles to minimize the total harmonic distortion (THD), thereby improving the output voltage quality. EO is a physics-based optimization algorithm inspired by control volume mass balance models. The algorithm has robust exploration and exploitation mechanisms leading to high performance with fast convergence speed and effective balancing of exploitation and exploration. A 1-ϕ T-MLI has been presented in this paper, which uses fewer switches to generate a five-level output, and the EO algorithm has been used to improve the output voltage. This system is simulated in a MATLAB/Simulink environment, the results of which are further validated through hardware implementation using DSP-TMS320F28379D and confirm the effectiveness of EO for optimizing the THD. It is evident from the comparison with various inverter topologies and control methods that the presented system is easy and utilizes the least component count to generate a five-level output. The generated output voltage has a THD of 14.77 % and outperformed many conventional optimization algorithms like differential evolution (DE) and genetic algorithm (GA), as well as several recently introduced algorithms like Archimedes optimization algorithm (AOA) and crystal structure algorithm (CryStAl). The result highlights the potential of the proposed system in advancing inverter system performance, offering a cost-effective and efficient solution for RES integration.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"243 ","pages":"Article 111538"},"PeriodicalIF":3.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A three-layer energy management system for hydrogen-powered ships combined instantaneous load forecasting

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-18 DOI: 10.1016/j.epsr.2025.111494

Jundao Jiang , Liang Zou , Li Zhang , Hui Wang , Yawei Wang , Xingdou Liu , Shuo Pang

{"title":"A three-layer energy management system for hydrogen-powered ships combined instantaneous load forecasting","authors":"Jundao Jiang , Liang Zou , Li Zhang , Hui Wang , Yawei Wang , Xingdou Liu , Shuo Pang","doi":"10.1016/j.epsr.2025.111494","DOIUrl":"10.1016/j.epsr.2025.111494","url":null,"abstract":"<div><div>This paper proposes a three-layer energy management system (EMS) for hydrogen-powered ships (HPS) that combines instantaneous load forecasting. The EMS includes a one-layer instantaneous load forecasting subsystem (ILFS) and a two-layer optimization and scheduling subsystem (OSS). The ILFS is composed of variational mode decomposition (VMD) and an improved autoregressive integrated moving average model based on Itô process (IP-ARIMA). First, considering high volatility and randomness of ship load, VMD is used to decompose ship load into multiple relatively stable intrinsic mode functions (IMFs), and an IP-ARIMA forecasting model is established for each IMF. Then, the forecasted sequences of each IP-ARIMA are superimposed to obtain the final forecasted load sequence (FLS). The upper and lower layers of the OSS use model predictive control and receive the FLS from ILFS. After the upper layer optimizes the efficiency of the hydrogen fuel cell (HFC) and state of charge (SOC) of the storage battery (SB), the lower layer minimizes the operating and degradation costs of the HFC. Finally, the HFC and SB perform energy scheduling according to the instruction signals output by the EMS. Experimental results show that, compared to other methods, the proposed EMS significantly enhances both economy and durability of HPS operation.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"243 ","pages":"Article 111494"},"PeriodicalIF":3.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frequency control strategy for VSC-MTDC system based on event-triggered mechanism

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-18 DOI: 10.1016/j.epsr.2025.111537

Xilin Zhao, Chengwei Wang

{"title":"Frequency control strategy for VSC-MTDC system based on event-triggered mechanism","authors":"Xilin Zhao, Chengwei Wang","doi":"10.1016/j.epsr.2025.111537","DOIUrl":"10.1016/j.epsr.2025.111537","url":null,"abstract":"<div><div>With high penetration of new energy sources, the Voltage Source Converters based Multi-Terminal High Voltage Direct Current (VSC-MTDC) system exhibits feature of weak grids. Due to the optimization characteristic, Model Predictive Control (MPC) has wide range of applications for dealing with frequency control problems in weak grids. However, the complexity of VSC-MTDC system has highlighted the issue of MPC which the computational complexity is relatively high. This paper proposes a frequency regulation strategy for VSC-MTDC system based on event triggered mechanism to deal with the problems. Firstly, the model of VSC-MTDC system with wind farm participation is established, and the problems of MPC for the frequency control in the system are analyzed. Secondly, considering the different frequency regulation demands caused by random load disturbances, a trigger mechanism for MPC is established to reduce computational complexity. The trigger rules are designed according to the rate of change of frequency in area grids and the deviation between the calculated value and the actual value. Then, considering the participation of VSC for the frequency regulation can improve the control performance, an improved droop control method for VSC is proposed, which designs another triggering mechanism for VSC to minimize the frequency deviation of each area and adjust the droop coefficients adaptively based on the available headroom of each VSC and voltage/frequency margins. Finally, a numerical example is analyzed. Simulation results demonstrate that the proposed strategy can trigger MPC and VSC based on different frequency regulation demands caused by random load disturbances, while ensuring frequency regulation performance and effectively reducing the computational complexity of the system.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111537"},"PeriodicalIF":3.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An efficient Wirtinger calculus-based algorithm for quasi-dynamic power flow analysis in distribution grids

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-17 DOI: 10.1016/j.epsr.2025.111506

Jhon Torres-Ladino, Walter Gil-González, Alejandro Garcés-Ruiz

{"title":"An efficient Wirtinger calculus-based algorithm for quasi-dynamic power flow analysis in distribution grids","authors":"Jhon Torres-Ladino, Walter Gil-González, Alejandro Garcés-Ruiz","doi":"10.1016/j.epsr.2025.111506","DOIUrl":"10.1016/j.epsr.2025.111506","url":null,"abstract":"<div><div>This work proposes a specialized algorithm for quasi-dynamic power flow in electrical power distribution systems. This problem consists of solving the power flow for a sequential instances, considering variation of generation and load. The proposed algorithm integrates Newton’s iterative process with Wirtinger calculus, enabling linearization of power flow equations directly in the complex plane. Additionally, a tailored fixed-point algorithm is proposed to efficiently solve the linear system at each Newton iteration. Other actions, such as moving invariant calculations outside nested loops, are also proposed to achieve better performance in terms of elapsed time and memory usage. The proposed algorithm is applicable to three-phase distribution systems – balanced or unbalanced – and supports both radial and meshed configurations. By operating directly in the complex plane, the algorithm preserves useful symmetries and provides a more compact representation. The numerical results conducted on medium-voltage grids, such as the CIGRÉ test network, and the European three-phase system with 906 nodes validate the proposed method’s accuracy and computational efficiency, outperforming traditional approaches like the Newton method in the real domain and forward–backward sweep techniques. The numerical results obtained show that the proposed algorithm is 45.17% faster compared to the traditional methods for the meshed and balanced case. For the radial and unbalanced case, an improvement of 97.21% was obtained with respect to the classical Newton method. These findings highlight the potential of the method to improve power flow analysis in modern distribution systems.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"243 ","pages":"Article 111506"},"PeriodicalIF":3.3,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel power theft and data breach detection technique for low-voltage distribution networks

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-17 DOI: 10.1016/j.epsr.2025.111503

Swati Agarwal, Ranjana Sodhi

{"title":"A novel power theft and data breach detection technique for low-voltage distribution networks","authors":"Swati Agarwal, Ranjana Sodhi","doi":"10.1016/j.epsr.2025.111503","DOIUrl":"10.1016/j.epsr.2025.111503","url":null,"abstract":"<div><div>Monitoring the security and integrity of smart meters is essential to combat power theft issues. To this end, this paper proposes a novel Dynamic <em>Power Theft and Data Breach Detection technique</em> for low-voltage distribution networks. The Dynamic Power Theft and Data Breach Detection technique consists of two stages wherein <strong>Stage-1</strong> evaluates feature combinations, and <strong>Stage-2</strong> involves dynamic clustering of feature combinations. An advanced clustering algorithm called Dirichlet Process Mixture Modelling, based on a non-parametric hierarchical Bayesian model, is employed to distinguish tampered meters. The methodology developed is tested on real-life datasets, including Pecan Street’s New York dataset and the UK power network’s London dataset. The efficacy of the proposed technique is verified by comparing its performance after incorporating popular exploratory data analysis techniques such as Pearson Correlation Coefficient, Fuzzy C-Means, and Density-Based Spatial Clustering of Applications with Noise. The comparative evaluation focuses on calculating metrics such as Accuracy, Geometric Truth Rate, Youden’s Index and Area under Receiver Operating Characteristics curve for each of these methods, alongside the proposed methodology. A rigorous analysis based on multiple trials conducted for each theft scenario reveals that the proposal achieves an overall Accuracy, Geometric truth rate, Youden’s index of 91.72%, 91.67% and 83.34% on the Pecan data streets and 96.73%, 96.83% and 93.67% on the UK power networks, respectively. The results verify the effectiveness of the proposed technique in distinguishing tampered and non-tampered low-voltage distribution network consumers.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"243 ","pages":"Article 111503"},"PeriodicalIF":3.3,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143428804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An 11-year study on the characteristic parameters of negative cloud-to-ground multiple ground strike point lightning flashes in Guangdong Province of China

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-16 DOI: 10.1016/j.epsr.2025.111477

Yudong Jiang , Fuchang Lin , Xiang Su , Yuyang Luo , Hua Li , Qian Li

{"title":"An 11-year study on the characteristic parameters of negative cloud-to-ground multiple ground strike point lightning flashes in Guangdong Province of China","authors":"Yudong Jiang , Fuchang Lin , Xiang Su , Yuyang Luo , Hua Li , Qian Li","doi":"10.1016/j.epsr.2025.111477","DOIUrl":"10.1016/j.epsr.2025.111477","url":null,"abstract":"<div><div>This study aims to comprehensively and deeply analyze characteristic parameters of negative cloud-to-ground (CG) multiple ground strike point (GSP) lightning flashes for designing and optimizing lightning protection systems. Thus, based on the RS data from the Guangdong lightning location system (GDLLS), the lightning characteristic parameters were extracted from RSs detected between 2010 and 2020 by the k-means clustering algorithm developed based on Python. The attention is focused on the lightning current, the number of GSPs per flash, the number of RSs per GSP, and the interval time between RSs contacting the same GSP, and is to distinguish characteristic parameters in the first and subsequent GSP. In addition, spatial visualization of lightning characteristic parameters was completed through the Geopandas library in Python. The correlation between CG flash density traditionally used to assess lightning risk and characteristic parameters of multiple GSP lightning flashes was analyzed. The lightning current, interval time, and GSP correlate positively with CG flash density, while RS is negatively correlated. The aerosol content and lightning leader channel charge in different regions explain this phenomenon.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"243 ","pages":"Article 111477"},"PeriodicalIF":3.3,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0