期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
Improving the performance of power system protection using wide area monitoring systems 被引量:6
1
作者 Arun G.PHADKE Peter WALL +1 位作者 Lei DING Vladimir TERZIJA 《Journal of Modern Power Systems and Clean Energy》 SCIE EI 2016年第3期319-331,共13页
Wide area monitoring(WAM) offers many opportunities to improve the performance of power system protection. This paper presents some of these opportunities and the motivation for their development. This methods include... Wide area monitoring(WAM) offers many opportunities to improve the performance of power system protection. This paper presents some of these opportunities and the motivation for their development. This methods include monitoring the suitability of relay characteristics,supervisory control of backup protection, more adaptive and intelligent system protection and the creation of novel system integrity protection scheme. The speed of response required for primary protection means that the role WAM in enhancing protection is limited to backup and system protection. The opportunities offered by WAM for enhancing protection are attractive because of the emerging challenges faced by the modern power system protection. The increasingly variable operating conditions of power systems are making it ever more difficult to select relay characteristics that will be a suitable compromise for all loading conditions and contingencies. The maloperation of relays has contributed to the inception and evolution of 70 % of blackouts,thus the supervision of the backup protection may prove a valuable tool for preventing or limiting the scale of blackouts. The increasing interconnection and complexity of modern power systems has made them more vulnerable to wide area disturbances and this has contributed to several recent blackouts. The proper management of these wide area disturbances is beyond the scope of most of the existing protection and new, adaptive system integrity protection schemes are needed to protect power system security. 展开更多
关键词 Backup protection BLACKOUTS Hidden failures Power system protection System integrity protection schemes wide area monitoring wide area protection
原文传递
Deployment and demonstration of wide area monitoring system in power system of Great Britain 被引量:1
2
作者 Peter WALL Papiya DATTARAY +8 位作者 Zhaoyang JIN Priyanka MOHAPATRA James YU Douglas WILSON Karine HAY Stuart CLARK Mark OSBORNE Phillip M.ASHTON Vladimir TERZIJA 《Journal of Modern Power Systems and Clean Energy》 SCIE EI 2016年第3期506-518,共13页
The creation of a suitable wide area monitoring system(WAMS) is widely recognized as an essential aspect of delivering a power system that will be secure,efficient and sustainable for the foreseeable future. In Great ... The creation of a suitable wide area monitoring system(WAMS) is widely recognized as an essential aspect of delivering a power system that will be secure,efficient and sustainable for the foreseeable future. In Great Britain(GB), the deployment of the first WAMS to monitor the entire power system in real time was the responsibility of the visualization of real time system dynamics using enhanced monitoring(VISOR) project. The core scope of the VISOR project is to deploy this WAMS and demonstrate how WAMS applications can in the near term provide system operators and planners with clear, actionable information. This paper presents the wider scope of the VISOR project and the GB wide WAMS that has been deployed. Furthermore, the paper describes some of the WAMS applications that have been deployed and provides examples of the measurement device performance issues that have been encountered during the project. 展开更多
关键词 Model validation Line parameter estimation Subsynchronous oscillation Subsynchronous resonance synchronized measurement technology wide area monitoring
原文传递
Guest editorial: special issue on wide area monitoring, protection and control in smart grid 被引量:1
3
作者 Vladimir TERZIJA Yutian LIU 《Journal of Modern Power Systems and Clean Energy》 SCIE EI 2016年第3期317-318,共2页
Complexity of modern electrical power systems is steadily increasing.This is inspiring researchers and developers to propose new solutions capable to address a number of challenges,particularly those related to power ... Complexity of modern electrical power systems is steadily increasing.This is inspiring researchers and developers to propose new solutions capable to address a number of challenges,particularly those related to power system operation.A massive penetration of asynchronously connected renewable energy generation,the generation connected over inverters,is significantly changing the dynamics of modern power systems.From one hand,the power system response time is becoming shorter and at the same time the fault level is becoming smaller.This is significantly affecting requirements of control loops,as well as power system protection. 展开更多
关键词 Guest editorial protection and control in smart grid special issue on wide area monitoring
原文传递
A novel method for locating the source of sustained oscillation in power system using synchrophasors data 被引量:4
4
作者 Mohd Zuhaib Mohd Rihan Mohd Tayyab Saeed 《Protection and Control of Modern Power Systems》 2020年第1期340-351,共12页
Large interconnected power systems are usually subjected to natural oscillation(NO)and forced oscillation(FO).NO occurs due to system transient response and is characterized by several oscillation modes,while FO occur... Large interconnected power systems are usually subjected to natural oscillation(NO)and forced oscillation(FO).NO occurs due to system transient response and is characterized by several oscillation modes,while FO occurs due to external perturbations driving generation sources.Compared to NO,FO is considered a more severe threat to the safe and reliable operation of power systems.Therefore,it is important to locate the source of FO so corrective actions can be taken to ensure stable power system operation.In this paper,a novel approach based on two-step signal processing is proposed to characterize FO in terms of its frequency components,duration,nature,and the location of the source.Data recorded by the Phasor Measurement Units(PMUs)in a Wide Area Monitoring System(WAMS)is utilized for analysis.As PMU data usually contains white noise and appears as multi-frequency oscillatory signal,the first step is to de-noise the raw PMU data by decomposing it into a series of intrinsic mode functions(IMF)using Improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise(ICEEMDAN)technique.The most appropriate IMF containing the vital information is selected using the correlation technique.The second step involves various signal processing and statistical analysis tools such as segmented Power Spectrum Density(PSD),excess kurtosis,cross PSD etc.to achieve the desired objectives.The analysis performed on the simulated two-area four-machine system,reduced WECC-179 bus 29 machine system,and the real-time power system PMU data set from ISO New England,demonstrates the accuracy of the proposed method.The proposed approach is independent of complex network topologies and their characteristics,and is also robust against measurement noise usually contained in PMU data. 展开更多
关键词 Forced oscillation(FO) Natural oscillation(NO) Phasor measurement unit(PMU) wide area monitoring system(WAMS) Empirical mode decomposition(EMD)etc
原文传递
Adaptive relay co-ordination using a busbar splitting approach for a system integrity protection scheme 被引量:1
5
作者 Rajesh Saikrishna Nilesh Kumar Rajalwal Debomita Ghosh 《Protection and Control of Modern Power Systems》 2022年第1期189-200,共12页
Power system faults can often result in excessively high currents.If sustained for a long time,such high currents can damage system equipment.Thus,it is desirable to operate the relays in the minimum possible time.In ... Power system faults can often result in excessively high currents.If sustained for a long time,such high currents can damage system equipment.Thus,it is desirable to operate the relays in the minimum possible time.In this paper,a busbar splitting approach is used for adaptive relay setting and co-ordination purposes for a system integrity protec-tion scheme(SIPS).Whenever a fault occurs,the busbar splitting scheme splits a bus to convert a loop into a radial structure.The splitting schemes are chosen such that the net fault current is also reduced.Busbar splitting elimi-nates the dependency upon minimum breakpoints set(MBPS)and reduces the relay operating time,thus making it adaptive.The proposed methodology is incorporated into the IEEE 14-bus and IEEE 30-bus systems with single and multiple fault conditions.The modeling and simulation carried out in ETAP,and the results of the proposed busbar splitting-based relay co-ordination are compared with the MBPS splitting-based relay co-ordination. 展开更多
关键词 System integrity protection scheme(SIPS) Relay co-ordination Minimum breakpoint set(MBPS) Ward equivalent method Busbar splitting wide area monitoring system(WAMS) ETAP
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部