Energy Conversion and Economics最新文献_第5页

An AC optimal power flow framework for active–reactive power scheduling considering generator capability curve 考虑发电机能力曲线的有功-无功功率调度交流优化功率流框架

Energy Conversion and Economics Pub Date : 2023-11-29 DOI: 10.1049/enc2.12101

Shri Ram Vaishya

{"title":"An AC optimal power flow framework for active–reactive power scheduling considering generator capability curve","authors":"Shri Ram Vaishya","doi":"10.1049/enc2.12101","DOIUrl":"https://doi.org/10.1049/enc2.12101","url":null,"abstract":"This paper presents a simplified optimal power flow (OPF) framework to facilitate co-optimised active and reactive power scheduling for synchronous generators and price-sensitive demands. The proposed framework creates an opportunity for generators and loads to simultaneously participate in a combined market for active and reactive power. The co-optimisation of active and reactive power generation is constrained by the interdependence of the active and reactive power capacities, which is represented by the generator capability curve. Thus, a detailed mathematical derivation of the opportunity costs across various regions of the generator capability curve is presented. This study considers a detailed generator capability curve that considers the armature, field, under-excitation, and prime mover limits. The interdependence of active and reactive power consumption for demand is modelled using the concept of power-factor. The OPF problem for generator and load scheduling is formulated as a non-linear optimisation task, leveraging the inherent properties of the generator capability curve, that is, piecewise smoothness, continuity, and the monotonically increasing slope magnitudes. Furthermore, to simplify the OPF formulation, the non-linear capability curve is represented as a combination of the linear curves. To demonstrate the effectiveness of the proposed OPF methodologies, suitable case studies are conducted using different test systems.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"4 6","pages":"425-438"},"PeriodicalIF":0.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139047615","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

Stochastic pre-disaster planning and post-disaster restoration to enhance distribution system resilience during typhoons 随机灾前规划和灾后恢复，以增强台风期间配电系统的抵御能力

Energy Conversion and Economics Pub Date : 2023-10-27 DOI: 10.1049/enc2.12098

Hui Hou, Junyi Tang, Zhiwei Zhang, Xixiu Wu, Ruizeng Wei, Lei Wang, Huan He

{"title":"Stochastic pre-disaster planning and post-disaster restoration to enhance distribution system resilience during typhoons","authors":"Hui Hou, Junyi Tang, Zhiwei Zhang, Xixiu Wu, Ruizeng Wei, Lei Wang, Huan He","doi":"10.1049/enc2.12098","DOIUrl":"https://doi.org/10.1049/enc2.12098","url":null,"abstract":"In recent years, extreme weather events, such as typhoons, have led to large-scale power outages in distribution systems. As a result, developing strategies to bolster distribution system resilience has become imperative. This paper proposes a two-stage stochastic programming model aimed at enhancing this resilience. Prior to a typhoon, the first stage establishes a comprehensive wind field model based on extreme value distribution for accurate wind speed predictions. Simultaneously, a refined stress–strength interference model is used to determine the likelihood of distribution line failures. Taking into account the uncertainty of line damage, repair crews and mobile emergency generators are then strategically positioned at staging depots. Following the typhoon, the second stage coordinates network reconfiguration, dispatches repair crews, and mobilizes mobile emergency generators to minimize load shedding and expedite repairs. This model was validated on the IEEE 33-bus distribution system, coupled with a corresponding transportation network, utilizing data from the 2018 super typhoon Mangkhut'' in China. Simulations indicate that our approach can effectively reduce load shedding and power outage durations, thereby enhancing the resilience of distribution systems.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"4 5","pages":"346-363"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71983557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A survey of networked microgrid operation under the transactive energy paradigm 交易能源范式下的网络化微电网运行综述

Energy Conversion and Economics Pub Date : 2023-10-18 DOI: 10.1049/enc2.12100

Kai Zhang, Lalitha Subramanian, Weitao Yao, Jiyan Wu, Siyue Zhang, Sebastian Troitzsch, Tobias Massier, Yan Xu

引用次数: 0

Dynamic reconfiguration of three-phase imbalanced distribution networks considering soft open points 考虑软开放点的三相不平衡配电网动态重构

Energy Conversion and Economics Pub Date : 2023-10-18 DOI: 10.1049/enc2.12099

Xingquan Ji, Xuan Zhang, Pingfeng Ye, Yumin Zhang, Guanglei Li, Zheng Gong

{"title":"Dynamic reconfiguration of three-phase imbalanced distribution networks considering soft open points","authors":"Xingquan Ji, Xuan Zhang, Pingfeng Ye, Yumin Zhang, Guanglei Li, Zheng Gong","doi":"10.1049/enc2.12099","DOIUrl":"https://doi.org/10.1049/enc2.12099","url":null,"abstract":"The characteristics of three-phase imbalances are present in medium- and low-voltage distribution networks. Integrating single-phase distributed generation (DG) exacerbates network imbalances, resulting in increased power losses and potential safety hazards. To address these issues, a dynamic reconfiguration strategy (DNR) for three-phase imbalanced distribution networks, considering soft open points (SOP), has been proposed. The objective is to alleviate the three-phase imbalance and minimize the operational costs of the distribution network. Within the reconfiguration strategy, the constraints of DG current imbalance in practical system operations are considered. A three-phase imbalanced DNR model that simultaneously considers the constraints of the SOP and DG current imbalances is introduced. This model aims to optimize the operation of all devices, including the SOP, to address the overall imbalance of the distribution network. This enables the authors to transform the non-linear model into a mixed-integer linear programming (MILP) model, significantly improving the solution efficiency. To validate the proposed strategy, simulations of a modified IEEE 34-node distribution system and an actual 78-node distribution system were conducted. The results demonstrate that this strategy offers significant economic benefits and ensures the security of the distribution network.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"4 5","pages":"364-377"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71965652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of cybersecurity for integrated energy systems with integration of cyber-physical systems 综合能源系统与网络物理系统的网络安全综述

Energy Conversion and Economics Pub Date : 2023-10-16 DOI: 10.1049/enc2.12097

Shixing Ding, Shuai Lu, Yijun Xu, Mert Korkali, Yang Cao

{"title":"Review of cybersecurity for integrated energy systems with integration of cyber-physical systems","authors":"Shixing Ding, Shuai Lu, Yijun Xu, Mert Korkali, Yang Cao","doi":"10.1049/enc2.12097","DOIUrl":"https://doi.org/10.1049/enc2.12097","url":null,"abstract":"The integrated energy system leverages advanced information, communication, and control technology to integrate various energy subsystems, including electricity, heat, and gas, to achieve efficient and coordinated operation of the entire energy system. The integrated energy system further forms an integrated energy cyber physical system (IECPS) through resonant coupling between cyber and physical systems. However, integrating multiple energy subsystems and the deep coupling of cyber and physical procedures in the IECPS increases the risk of cyberattacks, necessitating enhanced cybersecurity measures. This paper provides a comprehensive overview of the cyber-physical coupling modelling, security performance evaluation, attack and defence methods, and operation and recovery strategies of IECPS in response to cybersecurity threats. The coupling modelling of cyber and physical systems is discussed, followed by an evaluation of security performance of IECPS. Next, a range of attack and defence methods and effective IECPS operation and recovery strategies are presented. At last, the future research direction of IECPS cybersecurity is pointed out.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"4 5","pages":"334-345"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71962792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical thermal analysis of synchronous reluctance generator for wind energy application 风能应用中同步磁阻发电机的数值热分析

Energy Conversion and Economics Pub Date : 2023-10-16 DOI: 10.1049/enc2.12096

Tefera Kitaba Tolesa, Praveen Tripathy, Ravindranath Adda

引用次数: 0

A data-driven method for microgrid bidding optimization in electricity market 电力市场中微电网竞价优化的数据驱动方法

Energy Conversion and Economics Pub Date : 2023-08-16 DOI: 10.1049/enc2.12093

Rudai Yan, Yan Xu

引用次数: 0

A fast and robust DOBC based frequency and voltage regulation scheme for future power systems with high renewable penetration 一种快速、稳健的基于DOBC的频率和电压调节方案，适用于未来可再生能源渗透率高的电力系统

Energy Conversion and Economics Pub Date : 2023-08-16 DOI: 10.1049/enc2.12095

Himanshu Grover, Ashu Verma, T S Bhatti

{"title":"A fast and robust DOBC based frequency and voltage regulation scheme for future power systems with high renewable penetration","authors":"Himanshu Grover, Ashu Verma, T S Bhatti","doi":"10.1049/enc2.12095","DOIUrl":"https://doi.org/10.1049/enc2.12095","url":null,"abstract":"This paper proposes a disturbance-observer-based control (DOBC) scheme for frequency and voltage regulation in modern power systems with high renewable energy sources (RES) penetration. The proposed approach acts as a feed-forward control that improves the dynamic performance of the conventional proportional-integral-derivative (PID) controller. The proposed voltage and frequency control has been validated through hardware-in-loop (HIL) implementation on OPAL-RT, and testing on laboratory-scale experimental test setup. The robustness of the proposed control scheme has been validated through simulations under worst-case and stochastic uncertainties to mitigate real-time variability in RES output and load. Real-time simulation results depict superior performance of the proposed control strategy in comparison to several well-established techniques under practical operating conditions, in the presence of communication delay and white noise. To validate the proposed control on laboratory-scale experimental setup, the digital twin of the physical plant transfer function has been designed. Results reveal that the proposed DOBC control scheme drastically improves the system performance without rendering much computational burden under practical operation scenarios.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"4 4","pages":"276-291"},"PeriodicalIF":0.0,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50151223","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

Optimal dispatching of electric-heat-hydrogen integrated energy system based on Stackelberg game 基于Stackelberg对策的电热氢一体化能源系统优化调度

Energy Conversion and Economics Pub Date : 2023-08-14 DOI: 10.1049/enc2.12094

Yumin Zhang, Jingrui Li, Xingquan Ji, Pingfeng Ye, Danwen Yu, Baoyu Zhang

{"title":"Optimal dispatching of electric-heat-hydrogen integrated energy system based on Stackelberg game","authors":"Yumin Zhang, Jingrui Li, Xingquan Ji, Pingfeng Ye, Danwen Yu, Baoyu Zhang","doi":"10.1049/enc2.12094","DOIUrl":"https://doi.org/10.1049/enc2.12094","url":null,"abstract":"The interest conflict among entities in the integrated energy system (IES) has a great challenge to operation decisions of IES. With regards to this, an optimal dispatching model of electric-heat-hydrogen IES based on Stackelberg game is proposed. Firstly, an energy producer (EP) model is formulated which considered the full utilization of hydrogen energy and involved the conversion of hydrogen energy to electricity and heat energy. Meanwhile, the demand response amount is integrated into the objective function of load aggregator (LA) in order to encourage consumers to adjust their consumption behaviour. Secondly, by analyzing the characteristics of price information interaction among EP, energy system operator (ESO), and LA, the payoffs of each entity in IES are reformulated. Finally, a Stackelberg game model is established with ESO as the dominator guiding price information, EP and LA as the followers whose private information is confidential. Genetic algorithm and quadratic programming algorithm (GA-QP) are employed to solve the developed model. Numerical experiments are carried out on an actual park-level IES in northern China to demonstrate the effectiveness of the proposed model in promoting the benefit equilibrium among various entities.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"4 4","pages":"267-275"},"PeriodicalIF":0.0,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12094","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50132485","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

Multi-stage energy-risk adjustments using practical byzantine fault tolerance consensus for blockchain-powered peer-to-peer transactive markets 使用拜占庭容错共识对区块链驱动的对等交易市场进行多阶段能源风险调整

Energy Conversion and Economics Pub Date : 2023-07-28 DOI: 10.1049/enc2.12092

Vivek Mohan, Vishnu Dhinakaran, Mallika Gangadharan, Aditya Modekurti, Shyam M, Jisma M

{"title":"Multi-stage energy-risk adjustments using practical byzantine fault tolerance consensus for blockchain-powered peer-to-peer transactive markets","authors":"Vivek Mohan, Vishnu Dhinakaran, Mallika Gangadharan, Aditya Modekurti, Shyam M, Jisma M","doi":"10.1049/enc2.12092","DOIUrl":"https://doi.org/10.1049/enc2.12092","url":null,"abstract":"The energy risk associated with distributed energy resources (DERs) is inevitable in Peer-to-Peer (P2P) transactive energy markets owing to mismatches between energy commitments and metered measurements. However, adjusting these possible mismatches by progressive revision of the energy commitments in the rolling time horizon mitigates the energy risk, and thereby mitigates the financial risk for prosumers. In this study, the conditional value at risk (CVaR) is used to estimate the risk value for each prosumer. The energy offers that are riskier than CVaR-based threshold values are reduced in an “adjustment bid”. A new pricing mechanism for these adjustment bids is introduced, which varies with historical deviations of a prosumer from energy commitments. This market framework and pricing mechanism are simulated through a blockchain network hosted on a Python Django server using the practical Byzantine fault tolerance consensus algorithm to guarantee network immutability and data privacy. Efforts to mitigate such mismatches between ex-ante and ex-post energy values incentivise risk-aware participation in P2P markets. In addition, the welfare of both prosumers and consumers improves with their participation in the proposed market framework. Furthermore, implementing a network using blockchain technology guarantees the privacy of bidding data and provides a secure transaction platform.","PeriodicalId":100467,"journal":{"name":"Energy Conversion and Economics","volume":"4 4","pages":"252-266"},"PeriodicalIF":0.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/enc2.12092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50155260","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