{"title":"Design on DC de-icing schemes for high voltage transmission line","authors":"Chao Wang, Jun Wen, Shuqi Li, X. Ma, Jun Wang","doi":"10.1109/CRIS.2010.5617565","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617565","url":null,"abstract":"In recent years, extremely bad weather occurs frequently and the accumulation of ice on high voltage AC transmission lines renders mechanical and electrical damages to these lines. They greatly influence electrical power system normal operation; therefore, the de-icing technology has been highly regarded. Given the constraints of current thermal, mechanical and spontaneous ice-melting method, this paper that compare with previous incomprehensive papers firstly puts forward a full DC de-icing scheme, which contains all the deicing system parameters such as de-icing current, the filter capacity in AC side of rectifier. The scheme is similar to a three-phase half controlled bridge rectifier circuit and able to calculate all the parameters while taking AC system operation modes into consideration. All the parameters calculate is based on the fundamentals of electrical circuits and power electronics. A simulation model deploying PSCAD/EMTDC software under typical operation conditions of power systems proves that this scheme is capable of getting a de-icing current with a fast stabilizing speed and gaining good de-icing result. When there is a short circuit fault on AC ice-accumulated transmission lines, the smoothing reactor can suppress the short current effectively as well as guarantee the power quality of electrical loads.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"353 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124472122","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}
{"title":"Distribution network reliability considering complementary distribution generation with wind and photovoltaic powers","authors":"K. Zheng, Jian-hua Zhang, Wenxia Liu","doi":"10.1109/CRIS.2010.5617519","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617519","url":null,"abstract":"This paper presents a complementary distributed generation (DG) with wind and photovoltaic powers. And it gives a detailed analysis of the effects for the various states of this DG to the island's voltage and frequency, and presents an optimization strategy called under-frequency load shedding in the island to increase the accuracy of model. On this basis, it builds a reliability analysis and calculation model for distribution network taking into the stochastic characteristics of the DG. Taking RBTS 6-bus distribution system for example, the reliability indices are calculated without DG, with the wind-power DG, with the photovoltaic DG and the complementary DG to system, to illustrate the rationality and validity of the model. And it verifies the DG making a role in improving the reliability of the distribution network, and compared to the same capacity DG with single energy power, the complementary DG is more competitive in improving the reliability of the distribution network system.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124604021","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}
{"title":"Congestion dispatching model and a new trade mode for generation rights trade","authors":"Ai Dongping, B. Hai, Y. Yihan","doi":"10.1109/CRIS.2010.5617527","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617527","url":null,"abstract":"As an effective method of saving energy and avoiding market risks, generation rights trade has been carried out in some provinces and regional power companies. This paper analyzes the existing generation rights trade models and their algorithms, points that the results calculated by high-low match mode are not the optimal, because the trade order is inherent characteristic owned by this mode, which is not suitable for coupled and non-linear power system; the trade costs as a correct factors can't be ignored because they are important to the justice of trades. In order to solve above two problems, this paper designs a new trade mode that taking the whole system into account, which is different from the high-low match mode and founds a congestion dispatching model considering trade costs. For cooperating with the new trade mode, genetic algorithm is adopted to optimize trade model. The method proposed in this paper not only solves the problems caused by trade order, but also improves the justice of trades. It is also applicable to the multi-objective models. Finally, the correctness of this method is tested by IEEE39-Bus system.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130741799","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}
{"title":"Reactive power optimization based on an improved quantum discrete PSO algorithm","authors":"Shuqi Li, Dong-mei Zhao, Xu Zhang, Chao Wang","doi":"10.1109/CRIS.2010.5617552","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617552","url":null,"abstract":"The function of reactive power optimization (RPO)is to realize the reactive power of the electric fence and optimal control of voltage in order that the whole network's operation level can be improved and the loss of operation of power network can be reduced. Recently, the research of ORP is mainly focus on the handling of non-liner function and discrete variables and the convergence of the algorithm, which is the key and difficult point of the current research. quantum discrete PSO algorithm, which is applied to reactive power and voltage optimization control of electric power system, has great effect of searching relevance and coverage. However, the premature convergence problem will be appeared probably. In order to prevent some stagnations of the particles in the iteration, a method to improve quantum discrete particle swarm optimization(quantum discrete PSO)is proposed in this paper. Combined with the quantum discrete PSO Algorithm and chaotic optimization method, the global optimal positions which are found in the iteration of the quantum discrete PSO can reach the chaos optimization. By this, the result is randomly substituted for the position of a particle and continued iteration. The simulation results of some IEEE systems and an actual power network show that the method is characterized by the convergent speed greatly and good global search capability.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130828743","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}
{"title":"Communication needs for Wide Area Measurement applications","authors":"A. Phadke, J. Thorp","doi":"10.1109/CRIS.2010.5617484","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617484","url":null,"abstract":"Wide Area Measurements using Phasor Measurement Units have become an important component of modern power system monitoring. Several applications of this technology have been reported in the literature. What is lacking at this time is an assessment of communication requirements of those applications. This paper summarizes the various applications of Wide Area Measurements that have been proposed, and then examines the communication needs of each application. These needs are categorized as data volume, tolerable end-to-end delays for successful implementation of these applications, and some consideration of communication architecture appropriate for these applications.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123565343","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}
Wang Xiangxu, Guo Chunlin, Xiao Xiangning, Zhao Cheng-yong
{"title":"Research of analysis method of power system real-time digital simulation error","authors":"Wang Xiangxu, Guo Chunlin, Xiao Xiangning, Zhao Cheng-yong","doi":"10.1109/CRIS.2010.5617539","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617539","url":null,"abstract":"Simulation accuracy has great effects on power system analysis and control. In this paper, in order to analyze the power system real-time digital simulation error, prony algorithm is used to extract the features of signal. Based on the analysis results of this algorithm, residual similar index was used to characterize the global error of simulation, and then frequency, damping and amplitude similar indexes were employed to represent features error of transient signals respectively. A calculation program for power system real-time digital simulation accuracy evaluation was employed to analyze the measured waveforms and results of fault simulations on RTDS. Simulation results have proved the validity of the proposed analysis method of power system real time digital simulation error.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126229402","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}
Yan He, Xuanshu Chen, Fei Liu, Hu Zhang, Jing Xu, Jin Qiu
{"title":"Photoelectric controlled modular intelligent vacuum switch with phase selection function","authors":"Yan He, Xuanshu Chen, Fei Liu, Hu Zhang, Jing Xu, Jin Qiu","doi":"10.1109/CRIS.2010.5617489","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617489","url":null,"abstract":"Vacuum switch as a great potential for development of new power switch, in the low voltage level has a strong advantage, but to the development of high-voltage level encountered a relatively large resistance. This paper provides a kind of phase selection function, photoelectric control, with multi-take energy operate the power system, with permanent magnetic actuator of the modular smart vacuum switch. Its structure includes smart selection phase controller, power drive unit, multi-taking energy operate power systems, permanent magnet actuator, vacuum interrupter chamber and the outer insulation systems.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123955562","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}
{"title":"Data quality and reliability aspects of ICT infrastructures for Wide Area Monitoring and Control systems","authors":"Kun Zhu, M. Chenine, J. Konig, L. Nordstrom","doi":"10.1109/CRIS.2010.5617522","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617522","url":null,"abstract":"Synchronized phasor measurement based Wide Area Monitoring and Control (WAMC) system is becoming a reality within international research and development both in academia and industry. Timely and accurate data with high resolutions holds great promise for more responsible and advanced grid control and operation. Currently, most of the research focuses on the different control schemes and applications. A relatively less addressed aspect is the dependency of the WAMC system on the performance of the Information and Communication Technology (ICT) infrastructure, without whose support the projected functionalities of the WAMC systems will be not achieved. Possible delays brought by the complex data transfer and processing processes in WAMC systems are addressed in the first part of this paper. Thereafter, simulations where delayed Phasor measurements are fed to a typical WAMC application - Static Var Compensation (SVC) are conducted iteratively to detect its maximum tolerated delay. Furthermore, performance requirements to design a reliable SVC function are analyzed based on simulation results. In conjunction with the requirement discussion, a robust ICT architecture is proposed to mitigate the data latency and incompleteness issue. The paper is concluded by addressing data quality issues relating to the remote signal based SVC controller system reliability.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122129589","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}
S. Avallone, S. D'Antonio, Francesco Oliviero, S. Romano
{"title":"Use of traffic engineering techniques to increase resilience of SCADA networks","authors":"S. Avallone, S. D'Antonio, Francesco Oliviero, S. Romano","doi":"10.1109/CRIS.2010.5617562","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617562","url":null,"abstract":"In this paper we present the approach we have taken in the INSPIRE (INcreasing Security and Protection through Infrastructure REsilience) project to increase the protection of Critical Infrastructures (CIs). The core idea of the INSPIRE project is to protect Critical Infrastructures by making the underlying communication network more secure and resilient. In order to do so, we devised a routing mechanism that allows the communication infrastructure interconnecting SCADA (Supervisory Control And Data Acquisition) systems, the key building blocks of CIs, to be resilient to both node failures and attacks. The approach is to split the packets of a SCADA traffic flow on two node-disjoint paths by exploiting the capabilities of the Multi-Protocol Label Switching communication paradigm. The security of the SCADA traffic is improved since the proposed approach allows for a fast re-route of the flows traversing a node under attack, thus preserving the confidentiality of the transmitted information.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123168095","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}
{"title":"Study on method of single-phase-to-earth fault section location in neutral point resonant grounded system","authors":"Qi Zheng, Zheng Zhao, Y. Yihan","doi":"10.1109/CRIS.2010.5617537","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617537","url":null,"abstract":"Due to the large amount of branches and high grounding resistance of the distribution network, the earth fault location has not been solved effectively. A live location method is proposed for the single-phase-to-earth fault section in the neutral point resonant grounded system. By this method, the compensation current of arc-suppression coil is adjusted after the metallic earth fault occurs. And the fault section can be confirmed by the variation of zero-sequence current measured by FTU equipped in the lines, for the zero-sequence current in the non-fault path is proportional to the zero-sequence voltage. When the single-phase-to-earth fault via resistance occurs, zero-sequence voltage changes after the arc-suppression coil is adjusted. The method is also effective as long as the zero-sequence current is converted by zero-sequence voltage. The site experiments have been carried out to prove that the method is feasible.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129669231","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}