{"title":"Time control method on full-process dynamic real-time simulation of power system with parallel-in-time-space","authors":"Xiaoxin Zhou, Z. Han, Fang Tian, Yalou Li, Fang Li, Xin-shou Tian","doi":"10.1109/POWERCON.2010.5666536","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666536","url":null,"abstract":"The full-process dynamic real-time simulation not only needs to research the hybrid simulation technology, but also uses information theory, control theory and other disciplines of theory and knowledge, and coordinate information exchange process between the different simulation devices, and realizes real-time dynamic simulation for information flow between various types of physical devices, which is a fast and slow hybrid dynamic process in time scale. This requires that a more reasonable and effective time control method should be used, realizing the time unified control during the entire process of simulation. The paper analyzes the demand to platform of real-time simulation computer operating system, the emphasis is on the research and exploration of time control method of full-process dynamic real-time simulation of power system with parallel-in-time-space through analyzing time control of real-time system, and its application expectation is also given.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115737321","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":"Restoration of a smart distribution system","authors":"Z. Song, K. Demaree, L. Jing","doi":"10.1109/POWERCON.2010.5666408","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666408","url":null,"abstract":"The response of demands to disturbed supply conditions is considered in this paper as an input parameter for the decision of the restoration of a smart distribution system. A new module to investigate the response of demand side to the disturbances in the decision of restoration plan is developed. With the installation of advanced metering devices at homes and businesses the end-use customers are provided opportunities to actively participate in the network Demand Response (DR) program. Based on the proposed method in this paper the predetermined or real-time demand response capacity from end-use customers is deemed as an input to the restoration process. This new module simplifies the calculation of restoration plans and thus, enables the utility to restore customers more rapidly. Moreover it provides a more flexible and information rich platform for the restoration of a smart distribution system.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115253843","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}
Y. Li, C. Rehtanz, Dechang Yang, K. Gorner, S. Ruberg, Longfu Luo
{"title":"Wide-area time-delay damping control to prevent power oscillations in HVDC/AC interconnected power systems","authors":"Y. Li, C. Rehtanz, Dechang Yang, K. Gorner, S. Ruberg, Longfu Luo","doi":"10.1109/POWERCON.2010.5666549","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666549","url":null,"abstract":"In this paper, a robust high voltage direct-current (HVDC) wide-area time-delay damping control strategy is proposed to prevent the potential low-frequency power oscillation and enhance the power stability of HVDC/AC interconnected power systems. Firstly, the basic design concept and the related design flow are presented. Then, the general wide-area power system model with the time-delay characteristic is described by the linearization modeling method. The practical reduced-order algorithm is introduced to further obtain the reduced system state-space model that maintains the low-frequency oscillation mode. Furthermore, considering the inevitable time delay in the wide-area feedback control signals transmitted by the wide-area measurement system (WAMS), the improved linear matrix inequality (LMI) method is applied to design the robust supplementary damping controller associated to the HVDC converter pole-control. Such controller can efficiently suppress the negative effect of time delay of the wide-area control signals on the oscillation damping performance. In addition, the iterative algorithm is proposed to search the optimal overall gain matrix for the state feedback control, and the state observer is also designed based on the classic pole-placement method to realize the observability on the state variables of the reduced system. Finally, a case study on a benchmark system of small signal stability study is performed to validate the proposed HVDC wide-area time-delay damping control strategy.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115387352","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":"A review on analysis and control of small signal stability of power systems with large scale integration of wind power","authors":"Yuanzhan Sun, Lixin Wang, Guo-jie Li, Jin Lin","doi":"10.1109/POWERCON.2010.5666746","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666746","url":null,"abstract":"With the large scale penetration of wind power connected into power systems, it is of critical importance to investigate the influence of wind farms on the small signal stability of power systems and then develop appropriate control strategies to improve small signal stability. This paper provides an overview of recent progresses on the impact of the integration of large amounts of wind power on power system small signal stability and corresponding control strategies to enhance small signal stability. First, the concept of small signal stability and different types of wind turbine generators (WTGs) are introduced. In the second part, various viewpoints with respect to the effect of WTGs on power system small signal stability are presented. Finally, a variety of auxiliary controllers to amend small signal stability are summarized. On that basis, the issues for further study are prospected.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123455693","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}
Xin Tuo, S. Hong, B. Hai, Huang Bin, C. Dezhi, Ding Jian
{"title":"A practical equivalence method of large scale wind farm","authors":"Xin Tuo, S. Hong, B. Hai, Huang Bin, C. Dezhi, Ding Jian","doi":"10.1109/POWERCON.2010.5666663","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666663","url":null,"abstract":"Large scale wind power integration is the main way of wind power development in China. In simulation research, a large scale wind farm is necessary equivalent to be one aggregated model. The existing equivalence methods only consider the external characteristics of wind farm, and ignored the coupling relationship between units and power system. Through a massive simulation at different wind power mode scheduling and unit's operating point, this paper shows a wind farm operation condition, which its impacts on power system is severe. A practical equivalence method based on wind farm operation condition is proposed, and the effect of the method is validated by comparing the aggregated and detailed models.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123571185","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":"Implementation of Guizhou Power Grid wide-area security defense system platform","authors":"Gangliang Chen, Lin Cheng, Yuanzhan Sun, Ye Yuan","doi":"10.1109/POWERCON.2010.5666682","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666682","url":null,"abstract":"The wide-area security defense system (WASDS) platform of Guizhou Power Grid (GZPG) in China was developed based on the wide-area measurement system (WAMS), which is composed of master-station located at the dispatching center of GZPG and twenty two sub-stations installed in power plants and 500kV substations. This paper describes the implementation of the software platform which consists of three parts: data sharing service, calculation engine and visualization module. The paper focuses on the design of the data sharing service, the calculation engine of low frequency oscillation monitoring system (LOMS) which is the key part of the platform and the visualization module. This platform has been running in the dispatching centre of GZPG. Tests on measured data recorded by WAMS are presented which illustrate the benefits of the platform and show an excellent performance.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124085925","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}
Yao Chen, D. Yao, Wenxiao Ma, Jiuping Pan, L. Gertmar, A. Babaee, R. Vesel
{"title":"Study on coordinated reactive power control strategies for power plant auxiliary system energy efficiency and reliability improvement","authors":"Yao Chen, D. Yao, Wenxiao Ma, Jiuping Pan, L. Gertmar, A. Babaee, R. Vesel","doi":"10.1109/POWERCON.2010.5666716","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666716","url":null,"abstract":"From efficiency and reliability standpoints, there are three major issues in coal-fired power plant auxiliary systems: high in-house load, low power factor, and weak disturbance-ride-through capability. This paper presents a cost-effective solution to solve these problems. The proposed solution consists of Variable Frequency Drives (VFDs) with Active Rectifier Units (ARUs), mechanically switched shunt capacitor banks, and coordinated reactive power control strategies implemented in the power plant Distributed Control System (DCS). In this paper, the design principles of the proposed solution will be introduced. Coordinated control strategies of the ARUs and capacitors for which implement the steady-state power factor control and dynamic voltage support under disturbances will be described. The overall potential benefits resulting from the proposed solution will be discussed and demonstrated with example studies corresponding to a 300MW coal-fired power plant.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124234047","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}
A. V. Deventer, S. Chowdhury, S. Chowdhury, C. T. Gaunt
{"title":"Management of emergency reserves dispatching in electricity networks","authors":"A. V. Deventer, S. Chowdhury, S. Chowdhury, C. T. Gaunt","doi":"10.1109/POWERCON.2010.5666078","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666078","url":null,"abstract":"This paper presents the analysis of cost-effective dispatching of emergency reserves with a specific focus on supply and demand side options. On the demand side options the focus is the demand market participation product. On the supply side options the use of open cycle gas turbines is studied. In capacity constraint systems the supplying demand with the current generation mix needs to be met. With a diminishing reserve margin and increase in demand yearly this challenge increases. The South African scenario is reported in this paper. As demand grows the ability to meet that demand remains a focus; a responsibility that remains a priority for the system operator. In times of surplus or shortage generation with adequate or diminishing reserve margins the focus on dispatching optimally and economically is an important aspect. Currently the South African Interconnected Power System is constrained; at times there's more demand than supply. The reserve categories are the ancillary requirements and it is different for all power systems. Reserves are to cater for disturbances on the power system to ensure a healthy frequency is maintained. Reserve categories according to the ancillary requirements are: instantaneous, regulating, ten minute, supplemental and emergency. This paper focuses on emergency reserve.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124263123","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 and voltage control using an improved genetic algorithm","authors":"S. C. Liu, J. Zhang, Z. Q. Liu, H. Wang","doi":"10.1109/POWERCON.2010.5666654","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666654","url":null,"abstract":"This paper presents an improved dynamic genetic algorithm (IDGA) for reactive power optimization and voltage control. The problem is formulated as a mixed integer, nonlinear optimization problems considering both continuous and discrete control variables. The objective of optimization is minimizing active power losses while maintaining the quality of voltages. During evolution process, the crucial parameters, including mutation and crossover rate, are adjusted dynamically in order to get the optimal global solution. The IEEE standards 14 and 30 bus systems were used as test systems to demonstrate the applicability and efficiency of the proposed method. The results, compared with classical genetic algorithm and previous approaches reported in the literature, show that IDGA could find high-quality solutions with more reliability and efficiency.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125382441","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":"Theoretical research for the application of flow storage battery in demand side management","authors":"Bingying Wu, Bu-han Zhang, J. Wang, Junfang Li, Xu Zheng, Yifang Liu, Biao Mao, Yidan Gao","doi":"10.1109/POWERCON.2010.5666699","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666699","url":null,"abstract":"Demand side management (DSM) is an important strategy for the electric power industry. As the load demand is growing fast and the difference of peak and valley power is becoming larger with an annual increasing trend, it is necessary to take measures to implement peak load shifting. Flow storage battery (FSB) is well suited for the application owing to its high energy efficiency, fast response, long life and low maintenance requirements. This paper firstly introduces the advantages of FSB compared with other storage batteries, then the detailed model and battery properties are presented. Because FSB has the potential to save cost for both system equipment and customers, an optimal mathematical model is constructed to maximize the savings of customers to find the corresponding optimal capacity of FSB. A benchmark medium-voltage (MV) distribution network from German is used as an example to study the application of FSB in DSM in the constant power control mode. The result is significant to demonstrate that the application of FSB in DSM to implement the load shifting has great advantages and well potential to practical application.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126339043","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}