Beijing Kedong Electrical Power Control System Co.
Beijing Kedong Electrical Power Control System Co.
Wu Y.,State Grid Corporation of China |
Huang J.,State Grid Corporation of China |
Xu Z.,Beijing Kedong Electrical Power Control System Co. |
Wang G.,Beijing Kedong Electrical Power Control System Co. |
Gao F.,Beijing Kedong Electrical Power Control System Co.
PIC 2016 - Proceedings of the 2016 IEEE International Conference on Progress in Informatics and Computing | Year: 2017
Based on a vivid simulation training environment, substation secondary circuit simulation system can improve the training effect for substation operation. During practical training, some virtual measurement instruments have to be used. It is necessary to discuss the technology implementation of virtual measurement system of substation secondary simulation circuit. The model of virtual digital multimeter taken as a typical example is development, which takes into account the intelligent warning function which can point out the trainee errors, and also can cause less damage to the instruments. Meanwhile, communication middleware is designed to make the communication between virtual measurement system and substation secondary simulation circuit system. And, many virtual measurement instruments can be used simultaneously so that measuring and correcting in substation secondary simulation circuit can be achieved. In a word, virtual measuring system is implemented in practical training of substation secondary circuit maintenance, which has high fidelity simulation, ob tains good results, reflects th e a dvan tages of virtu al environment. © 2016 IEEE.
Qu Z.,Hebei University of Engineering |
Zhang K.,Hebei University of Engineering |
Wang Y.,Hebei University of Engineering |
Cui Z.,Hebei University of Engineering |
Liu S.,Beijing Kedong Electrical Power Control System Co.
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | Year: 2016
In order to improve the detection and recognition accuracy of power quality, an optimized atomic decomposition algorithm is proposed based on bacterial colony chemotaxis algorithm and orthogonal matching pursuit (BCC-OMP) to de-noise the power quality disturbance signals. This method uses orthogonal matching pursuit algorithm to optimize the matching pursuit algorithm in Gabor atom dictionary. Then it utilizes bacterial chemotaxis algorithm for further optimization to improve the convergence speed and enhance the de-noising ability. The termination condition is set by a residual threshold to de-noising all types of noisy signals adaptively. Simulation results indicate the effectiveness, rapidity and accuracy of the proposed method. © 2016, Science Press. All right reserved.
Wang J.,Central China Grid Co. |
Chen W.,Beijing Kedong Electrical Power Control System Co. |
Tang W.,Central China Grid Co. |
Wang H.,Beijing Kedong Electrical Power Control System Co. |
Jin F.,Beijing Kedong Electrical Power Control System Co.
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2017
In order to solve the problem that the traditional topological coloring analysis method is of slow speed and low efficiency, and cannot adapt to the high efficiency requirements of power system application software, the key technology of distributed parallel network topology is studied. Through the research of the reasonable network topology model, the method of the topology calculation program is transformed into a multi thread parallel processing. And then by making full use of the resources of the cluster and network, the whole network topology is divided by different servers to carry out the analysis and calculation. Finally each parallel server uses a high efficiency of network topology analysis algorithm. After the above steps, the network topology calculation can improve the efficiency of the computation and operation, and can be expanded reliably. © 2017, Power System Protection and Control Press. All right reserved.
Shi Y.,Inner Mongolia Electrical Power Research Institute |
Fan X.,Inner Mongolia Electrical Power Research Institute |
Li W.,Inner Mongolia Electrical Power Research Institute |
Liu J.,Beijing KeDong Electrical Power Control System Co. |
Ma H.,Inner Mongolia Electrical Power Research Institute
Proceedings of the IEEE International Conference on Software Engineering and Service Sciences, ICSESS | Year: 2017
The electricity power supply company has entered the era of market economy as the deepening of reform, and the pressure to run the company well is increasing gradually. However, some questions, such as malicious default, electricity bills evasion, electricity cheat, and so on, still have not been solved. How to effectively avoid the arrearage risk and improve the economic benefit is key for the enterprises. This paper mainly studied the power users credit rating evaluation based on big data. This system proposed a new algorithm model which combined traditional k-Nearest Neighbor (KNN) and Simulated annealing (SA) and used the big data software framework and data processing technology to rapid construct the users portrait as well as evaluate the users rating and credit rating division, evaluation, and so on. Finally, the results were presented and then laid a good foundation for the researches in future. © 2016 IEEE.
Bo H.,State Grid Corporation of China |
Yukun J.,State Grid Corporation of China |
Xin J.,Beijing KeDong Electrical Power Control System Co. |
Huaqin T.,Beijing KeDong Electrical Power Control System Co.
International Journal of Simulation: Systems, Science and Technology | Year: 2016
The rapid growth of the electricity market in China causes many problems related to electricity trading and transaction. To solve the problems, we purpose an integrated electricity trading platform. In this paper, we conducted the requirement analysis and design process of the platform. Then, the implementation of the platform is detailed. Finally, we test the platform and implement the platform in real situations. The results show a great prospect and stability of the trading platform. © 2016, UK Simulation Society. All rights reserved.
Li Y.,State Grid Corporation of China |
He L.,Beijing Kedong Electrical Power Control System Co. |
Pang C.,Beijing Kedong Electrical Power Control System Co. |
Liu Q.,Beijing Kedong Electrical Power Control System Co.
Dianwang Jishu/Power System Technology | Year: 2015
Firstly, based on the construction principle of dispatching institution's comprehensive evaluation indices for coal-fired power plants a comprehensive index system is established; then by use of analytic hierarchy process (AHP) an architectural model of multi-hierarchical index system is built, and combining with expert experiences the weights of indices are determined hierarchy by hierarchy; and then the fuzzy evaluation method is utilized to establish the fuzzy relationship between the indices of coal-fired power plant and the order of evaluation, thus the quantitative results with multi-objectives and multi-factors is formed; finally, the compositional operation of index weights and quantitative results is performed to implement the comprehensive evaluation of operating conditions of coal-fired power plant. Results of actual application show that the operating conditions of coal-fired power plant can be reflected by the established evaluation index system and the utilized evaluation method comprehensively and objectively, therefore they are favorable for dispatching institution to improve its operation and management level for coal-fired power plants. ©, 2015, Power System Technology Press. All right reserved.
State Grid Corporation of China, Jiangsu Electric Power Company and BEIJING KEDONG Electrical POWER CONTROL SYSTEM CO. | Date: 2014-09-30
Disclosed are a method for searching a cross-regional power supply area based on a common information model (CIM) and a system thereof. In the method, a hash function is first created according to a size of a power grid in which a power source is located; identification numbers of all devices in the power grid are mapped to a discrete hash table according to the hash function, and a collision is solved by using separate chaining; and a hash topological graph of the power grid is formed by using the discrete hash table; and a power supply area of a designated device is searched by using the hash topological graph. According to the present invention, devices in a power supply area are located rapidly and accurately by creating a discrete hash table for all device resources, so that the amount of computation is greatly reduced, and the efficiency of searching the power supply area is significantly improved.
Wang L.-X.,Beijing Kedong Electrical Power Control System Co. |
Lin C.-N.,Beijing Kedong Electrical Power Control System Co. |
Li Y.-K.,Beijing Kedong Electrical Power Control System Co. |
Zhang H.,Beijing Kedong Electrical Power Control System Co.
Proceedings of the 5th IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies, DRPT 2015 | Year: 2015
Economic operation of complicated distribution network is an important problem. A bilevel optimal operation model of complicated distribution networks with microgrids integration is built. In the model, the day-ahead optimal operation of complicated distribution networks is on the upper-level and the optimal operation of the microgrid is on the lower-level. Electricity exchange price constraints are considered in this model. Further, in order to overcome negative influences brought by the volatility of renewable distributed generators, electric vehicles are adopted to balance the volatility. The proposed bilevel optimal operation model is solved by particles swarm optimization based on bilevel iterative algorithm (BIA-PSO). The demonstration is performed on a modified IEEE 33-node radial distribution network with microgird integration. © 2015 IEEE.
Yu A.W.,Center China Grid Company Ltd |
Tang W.,Center China Grid Company Ltd |
Feng B.C.,Beijing Kedong Electrical Power Control System Co.
Advances in Power and Energy Engineering - Proceedings of the 8th Asia-Pacific Power and Energy Engineering Conference, APPEEC 2016 | Year: 2016
500 kV common-tower double-circuit transmission lines have a close distance between conductors and strong coupling. When faults occur in the transmission line, the sound phase has an electromagnetic-induced voltage compared with the fault phase. This paper proposes an induced voltage-based analytic strategy on the master station for the one-line tripping out of 500 kV common-tower double-circuit transmission lines. The fault property, the fault phases, the position of failure points and whether the fault has been removed can be decided based on our strategy. It can provide a reliable basis for the forced line charging. © 2016 Taylor & Francis Group, London.
BEIJING KEDONG Electrical POWER CONTROL SYSTEM CO. | Date: 2013-11-11
The present invention discloses a three-dimensional man-machine interaction display and control method for power grid operation monitoring, which includes the following steps: drawing a picture in a two-dimensional plane by using a dual-buffer mechanism; reading the picture drawn in the two-dimensional plane, and drawing the picture in a three-dimensional space; detecting an interaction event in the three-dimensional space, and determining a type of a component in an operation panel; delivering the interaction event between the three-dimensional space and the two-dimensional plane, and processing the interaction event according to the component type; and reading the picture drawn by the component in the two-dimensional plane, and updating a corresponding image in the three-dimensional space. The present invention solves the problem of introducing the alarm images into the three-dimensional space.