2018 20th National Power Systems Conference (NPSC)最新文献_第5页

Wavelet Transform Based PQ Event Localization Scheme for Benchmark LVAC Microgrid 基于小波变换的基准LVAC微电网PQ事件定位方案

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771775

S. Som, S. Chakrabarti, S. R. Sahoo

{"title":"Wavelet Transform Based PQ Event Localization Scheme for Benchmark LVAC Microgrid","authors":"S. Som, S. Chakrabarti, S. R. Sahoo","doi":"10.1109/NPSC.2018.8771775","DOIUrl":"https://doi.org/10.1109/NPSC.2018.8771775","url":null,"abstract":"Widespread use of renewable energy resources and electronic equipment has aggravated the power quality issues. Delivery of the undistorted sinusoidal rated voltage and current at rated frequency are the main expectations from electrical power system. Thus, continuous detection and localization of power quality disturbances has become a major concern for transmission and distribution networks to identify sources of disturbance and to circumvent equipment damage. However, automatic Power Quality (PQ) event localization is a challenging concern for both utility and industries. A novel technique based on Discrete Wavelet Transform (DWT) has been proposed for online PQ event detection and offline near-by area localization in distribution networks. Line current signal features based on DWT are extracted and the proposed scheme is evaluated by MATLAB simulation for a typical 415 V benchmark Low Voltage AC (LVAC) microgrid. The algorithm performance like steady-state, sensitivity and selectivity is validated in presence and absence of distributed energy resources (DERs) for various PQ events. Thus, manual effort involved in PQ disturbance location and source rectification could be minimized once a defined near-by area in the entire distribution network is identified.","PeriodicalId":185930,"journal":{"name":"2018 20th National Power Systems Conference (NPSC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116334824","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: 2

Optimal Congestion Management Strategy by probabilistic distributed generators with losses and voltage stabilities 具有损耗和电压稳定的概率分布式发电机的最优拥塞管理策略

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771811

Rajagopal Peesapati, V. Yadav, N. Kumar

引用次数: 1

A Novel Method for Synchronization with Unbalanced Grid: An Experimental Investigation 一种新的不平衡网格同步方法的实验研究

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771866

Arobinda Dash, R. Behera, D. P. Bagarty, P. K. Hota

{"title":"A Novel Method for Synchronization with Unbalanced Grid: An Experimental Investigation","authors":"Arobinda Dash, R. Behera, D. P. Bagarty, P. K. Hota","doi":"10.1109/NPSC.2018.8771866","DOIUrl":"https://doi.org/10.1109/NPSC.2018.8771866","url":null,"abstract":"A major issue for the grid connected renewable energy system specifically during unbalance grid condition is the grid synchronization. Under unbalance grid condition, in order to implement stable operation, it is necessity to determine the grid parameter accurately and rapidly. Algorithms used for Grid synchronization plays an important role in the control and steady operation of grid-connected converters. To implement stable and steady control strategy under unbalance grid condition, the detection of grid parameter accurately and rapidly are also crucial. Synchronous Reference Frame Phase Locked Loop (SRF-PLL) works satisfactory for balance grid condition but its performance deteriorates with unbalance grid condition. However, Dual Second Order generalized Integrator (DSOGI)-PLL performs reasonably well in grid synchronization during unbalance grid condition. DSOGI consists of a low pass lter (LPF) and band pass lter to attenuate harmonic of the unbalance grid. In SRF-PLL, the angle is tracked in such a way that the maximum phase voltage is reflected on d-axis while component voltage along q-axis is zero. Hence taking the advantages of DSOGI and SRF-PLL, the DSOGI-PLL architecture has been proposed in this paper. The proposed DSOGI-PLL has better performance in grid synchronization under unbalance grid conditions.","PeriodicalId":185930,"journal":{"name":"2018 20th National Power Systems Conference (NPSC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127244550","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: 1

Analysis for Siting and Sizing of a Small Modular Reactor — A Case Study in Canada 小型模块化反应堆选址与规模分析——以加拿大为例

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771710

B. Poudel, Kalpesh A. Joshi, R. Gokaraju

引用次数: 5

Apparent Power Loss Based Equivalent Model of Wind Farm Collector System 基于视在功率损耗的风电场集热器系统等效模型

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771713

Akhil Gupta, A. Mohapatra, Subaran Singh

{"title":"Apparent Power Loss Based Equivalent Model of Wind Farm Collector System","authors":"Akhil Gupta, A. Mohapatra, Subaran Singh","doi":"10.1109/NPSC.2018.8771713","DOIUrl":"https://doi.org/10.1109/NPSC.2018.8771713","url":null,"abstract":"Recent expansion of utility-scale wind farms has lead to increased concern and interest in studying the interaction of wind farm and the power system network. A suitable equivalent/aggregated model eliminates the need to develop the full detailed model of the wind farm which makes the analysis fast and reliable. Within a wind farm, the wind turbines are interconnected by an electrical network also known as collector system. While aggregating the wind farm, aggregated model of collector system also plays an important role. This paper presents an effective apparent power loss based equivalent model for wind farm collector system while considering the reactive power limits of each wind turbine and wake effect in the wind farm. The proposed approach compares the total apparent losses in pad mount transformer, trunk lines and feeder lines of the detailed and equivalent models. Based on this comparison, values of parameters in equivalent model have been calculated. Test system of HornsRev offshore wind farm has been simulated in PSS/E software and it is found that the equivalent model obtained with the proposed method has the highest accuracy over other methods suggested in the literature.","PeriodicalId":185930,"journal":{"name":"2018 20th National Power Systems Conference (NPSC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129098093","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: 3

Data analytics for statistical characterization of prices and empirical resource investment planning in Indian electricity market 印度电力市场价格统计特征的数据分析与经验资源投资规划

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771829

A. Saranya, P. Verma, T. Vidyamani, K. Swarup

{"title":"Data analytics for statistical characterization of prices and empirical resource investment planning in Indian electricity market","authors":"A. Saranya, P. Verma, T. Vidyamani, K. Swarup","doi":"10.1109/NPSC.2018.8771829","DOIUrl":"https://doi.org/10.1109/NPSC.2018.8771829","url":null,"abstract":"With the advent of technological developments, a large amount of data is being created and made available at every time instance. This work tries to leverage this data for useful interpretations and derives resource investment planning strategies. Data analytics can be a useful tool to understand the optimal locations, for resource investments in the grid. The study can be helpful in reducing the search space in an optimal resource investment planning problem. As a precursor data analytics study could help in forming policies that could complement a planning problem. India is a growing economy and the electric demand of the country is also increasing. There is a need to attract more investment in the generation side to meet the future loads. It is important to statistically characterize the electricity prices to find the potential investment regions in the grid. This paper gives an overview of the restructured power industry in India, the various market segments in existence and gives a detailed statistical analysis of the Day Ahead Electricity Market prices using Minitab and Statistics toolbox of MATLAB. It also discusses the operational issues like congestion management scheme followed and their effect on the area prices, that could help in empirical resource planning and policy making.","PeriodicalId":185930,"journal":{"name":"2018 20th National Power Systems Conference (NPSC)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127327943","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: 1

Wavelet-Based Auto-Reclosing Technique for TCSC Compensated Lines Connecting Windfarm 基于小波的TCSC补偿线路连接风电场自动重合闸技术

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771764

Biswajit Sahoo, S. Samantaray

{"title":"Wavelet-Based Auto-Reclosing Technique for TCSC Compensated Lines Connecting Windfarm","authors":"Biswajit Sahoo, S. Samantaray","doi":"10.1109/NPSC.2018.8771764","DOIUrl":"https://doi.org/10.1109/NPSC.2018.8771764","url":null,"abstract":"Auto-reclosing improves system stability by fast restoration of the line in case of arcing faults. Conventional techniques using harmonics of voltage and current have disadvantages in series-compensation environments because of associated dynamics and control mechanisms. Again, the auto-reclosing process can be affected for systems having large scale windfarm which are very sensitive to grid disturbances. This research work proposes a technique for adaptive autoreclosing in case of phase-to-earth faults for TCSC compensated transmission line connected to windfarm. A technique is devised that utilizes the cumulative sum of wavelet energy (CSW) calculated using wavelet coefficients to derive an index (FTI) which distinguishes between permanent and transient faults. Another extinction index (AEI) is computed using CSW during the secondary arc to identify the arc extinction. This parameter is used to change the dead time set for the recloser and thus, reclosing during fault process is avoided. The performance evaluation of the proposed scheme on the real-time digital simulator (RTDS) platform with shunt compensation and neutral reactor, demonstrates its real-time applicability.","PeriodicalId":185930,"journal":{"name":"2018 20th National Power Systems Conference (NPSC)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117204899","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: 1

Coordinated Load Flow Solution for Coupled Transmission-Distribution System Incorporating Load Modeling 结合负荷建模的耦合输配电系统协调潮流解

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771708

Megha Gupta, A. Abhyankar

{"title":"Coordinated Load Flow Solution for Coupled Transmission-Distribution System Incorporating Load Modeling","authors":"Megha Gupta, A. Abhyankar","doi":"10.1109/NPSC.2018.8771708","DOIUrl":"https://doi.org/10.1109/NPSC.2018.8771708","url":null,"abstract":"With the flow of time there is a rapid addition of distributed generation (DG) units in the distribution system (DS). This transformation of DS from passive to active network has made the examination of coupling between transmission and distribution (T&D) systems more significant. Conventionally, the load flow studies are performed individually for both transmission system (TS) and DS, presuming the other system as an equivalent. But to achieve a global solution for the entire power system, a Coordinated Load Flow (CLF) method is required. It will perform load flow in a distributed manner with a little reciprocity of information at the common bus, in order to reduce the computational complexities of solving large scale problems. This will allow to analyze the impact of detailed modeling of DS on global load flow solution which was otherwise neglected in traditional methods. This paper firstly presents the methodology to perform CLF. Further, the significance of CLF method is proved especially in the presence of voltage dependent loads in DS and its performance is compared with the solutions of independent T&D load flows. Numerical simulations are performed on various test cases and the results are validated using Newton-Raphson load flow method with optimal multiplier.","PeriodicalId":185930,"journal":{"name":"2018 20th National Power Systems Conference (NPSC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128352061","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: 4

Incremental PMU Placement Based on Depth of Unobservability 基于不可观测深度的PMU增量放置

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771841

Sanjay Kumar, B. Tyagi, Vishal Kumar, S. Chohan

引用次数: 0

A power flow controller for a Standalone solar PV system employing a three port Luo converter 采用三端口Luo转换器的独立太阳能光伏系统的功率流控制器

2018 20th National Power Systems Conference (NPSC) Pub Date : 2018-12-01 DOI: 10.1109/NPSC.2018.8771856

Diksha Agarwal, Diptisikha Dash, Snigdha S Dalai, I. Anand, Senthilkumar Subramaniam

引用次数: 2