2010 5th International Conference on Critical Infrastructure (CRIS)最新文献_第4页

GIC calculation in power grid based on layered earth mode 基于层状大地模式的电网GIC计算

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617563

Ming Zou, Lianguang Liu

{"title":"GIC calculation in power grid based on layered earth mode","authors":"Ming Zou, Lianguang Liu","doi":"10.1109/CRIS.2010.5617563","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617563","url":null,"abstract":"Geomagnetically induced currents (GIC) in power grid are highly depended on the magnetic storm intensity, the earth electrical structure, the network configuration and many other factors. The difference in the conductivity of ground at different depths is significant to calculate GIC accurately. According to the mechanism of GIC production, in this paper, it is firstly established the layered earth model, derived iterative formula of the earth wave impedance and the relationships between the earth surface potential (ESP) and the varying electromagnetic field, presented the ESP algorithm based on the plane wave model. Secondly, based on quasi-dc characteristic of GIC, equivalent models of components in power grids are set up, power grid modeling and its simplification method are brought forward, which take the direction of the transmission line, the electrical network structure, the run way and other influencing factors into consideration, and the matrix equation solution in convenience of calculation is deduced. Finally, based on the above work, the software has been developed to calculate ESP and power grid GIC. Taking Yanghuai power grid for example, the ESP and GIC in Yanghuai transmission system are calculated based on the geomagnetic data and the Yanghuai tectonic structure. The result compared with the measured data indicates that the proposed model and algorithm are simple, effective and of high accuracy.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"54 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":"123921892","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: 7

IP-based communication systems for wide-area frequency stability predictive control 基于ip的广域频率稳定预测控制通信系统

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617555

Xueyuan Dong, K. Hopkinson, Xiaoyang Tong, Xiaoru Wang, J. Thorp

引用次数: 2

A New Algorithm of Topology Analysis Based on PMU information 基于PMU信息的拓扑分析新算法

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617524

Cheng Qian, Zengping Wang, Jinfang Zhang

引用次数: 15

The implement of carrier based islanding protection 舰载机孤岛保护的实施

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617554

Fan Shuxian, X. Bingyin

引用次数: 0

Dominant mode identification for low frequency oscillations of power systems based on Prony algorithm 基于proony算法的电力系统低频振荡主导模式辨识

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617531

Lan Ding, A. Xue, Fukun Han, Jin Li, Maohai Wang, T. Bi, Jinping Wang

{"title":"Dominant mode identification for low frequency oscillations of power systems based on Prony algorithm","authors":"Lan Ding, A. Xue, Fukun Han, Jin Li, Maohai Wang, T. Bi, Jinping Wang","doi":"10.1109/CRIS.2010.5617531","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617531","url":null,"abstract":"Once the power system low frequency oscillation occurs, the operators desire to find out the dominant mode LFO so as to take measures to suspend it. This paper proposes an identification method for dominant mode of LFO based on Prony algorithm in wide-area measurement system (WAMS). The presented method contains three steps, the first step is preprocessing of Prony analysis result, the second step is the dominant mode identification, and the third step is the grouping of different generators according individual generator's frequency and phase information. Among the dominant mode identification step, three indexes are proposed to select the dominant mode. The first one is the ratio of amplitude and damping ratio; the second one is mode energy and the third one is the amplitude of sinusoidal decay mode after a period of oscillation. The simulation results in a two-area-four-machine benchmark system and 10 generator 39-bus New England system by DSATools demonstrate that the proposed method has strong adaptability to noise, i.e., the method has good performance of identification.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"36 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":"117100105","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: 13

A new node contribution factors for the low frequency oscillations of power system based on the PMU's data and HHT 基于PMU数据和HHT，提出了一种新的电力系统低频振荡的节点贡献因子

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617521

Jin Li, A. Xue, Jinping Wang, Lan Ding, Maohai Wang, T. Bi, Fukun Han

{"title":"A new node contribution factors for the low frequency oscillations of power system based on the PMU's data and HHT","authors":"Jin Li, A. Xue, Jinping Wang, Lan Ding, Maohai Wang, T. Bi, Fukun Han","doi":"10.1109/CRIS.2010.5617521","DOIUrl":"https://doi.org/10.1109/CRIS.2010.5617521","url":null,"abstract":"With the rapid development and interconnection of power systems, the low frequency oscillations(LFO) has become one of the serious factors threatening the power system stability. Thus, how to quickly locate the source of LFO and implement controller to suspend it, is an urgent task. The general approach to locate the sources of LFO is using the node contribution factor(NCF), which indicating the contribution of the node(generator) in the oscillation. This paper aims at proposed a new more effective method to calculate the NCF for LFO based on the HHT and data obtained with Wide Area Measurement System (WAMS). As general philosophy, the proposed NCF is defined as the ratio of the generators' node oscillation energy(NOE) and the total oscillation energy(TOE), related to a particular oscillation mode. The NOE and TOE is defined based on the intrinsic mode functions(IMFs), which is obtained with the application of the HHT method. In detail, the (individual) node oscillation energy is defined as the product of the node's oscillation amplitude and cosine of relative phase. And the TOE, is defined the positive (or reverse respectively) group total energy for the node in the positive or reverse respectively, where the positive (or reverse respectively) group total energy is the cumulative energy of all nodes in the positive(or reverse respectively) group. And the generator grouping is obtained according to the phase, which is defined for the IMFs obtained with the HHT method. Simulation results in 4-machine and 17-machine system show that the proposed algorithm for NCF is more effective than the existed algorithm. And furthermore, the active power signals have better performance than the angle signals.","PeriodicalId":206094,"journal":{"name":"2010 5th International Conference on Critical Infrastructure (CRIS)","volume":"60 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":"125802693","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

Research and implementation of expanding the size of electromechanical transient in the hybrid real-time simulation 扩展机电暂态尺寸在混合实时仿真中的研究与实现

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617520

Na An, Chengyong Zhao

引用次数: 0

A novel method for determining minimum break point set based on network reduction and relays incidence matrix 基于网络约简和中继关联矩阵确定最小断点集的新方法

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617486

Donghua Ye, Jing Ma, Zengping Wang

引用次数: 3

A combined prediction method of wind farm power 一种风电场功率组合预测方法

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617532

Chen Ye, Gengyin Li, Ming Zhou

引用次数: 7

Directional relay based on traveling-wave comparison using intrinsic mode function for EHV transmission lines 超高压输电线路内禀模态函数行波比较定向继电器

2010 5th International Conference on Critical Infrastructure (CRIS) Pub Date : 2010-11-01 DOI: 10.1109/CRIS.2010.5617568

J. Duan, Qin-Fen Zhou, L. An

引用次数: 7