Beijing Kedong Electrical Power Control System Co.

Beijing, China

Beijing Kedong Electrical Power Control System Co.

Beijing, China

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Ziming G.,Beijing Electric Power Company | Songnan L.-I.,Dalian University of Technology | Zeping G.,Beijing KeDong Electrical Power Control System Co.
Information Technology Journal | Year: 2014

In order to better meet the requirements of automatic voltage control, this study proposes a constraint-based clustering method for power grid soft partitioning. By pre-setting boundary conditions into the clustering algorithm, this method solves the problems that exist in the traditional method, in which one needs to artificially determine the number of partitions and a whole partition contains isolated bus only. Next, the study proposes a method to further improve the partition result by regulating the few unreasonable buses. Then, this study proposes a partition result evaluating method based on electrical gravitation. This evaluating method provides a reliable basis for verifying whether the boundary conditions are reasonable and distinguishing the merits of different partitioning methods. At last, the partition result of this study method is compared with the existing method. The comparison results show that this study method can better meet the requirement of automatic voltage control. © 2014 Asian Network for Scientific Information


Wei W.,Beijing Kedong Electrical Power Control System Co. | Zhou S.,Beijing Kedong Electrical Power Control System Co. | Zhao Y.,Beijing Kedong Electrical Power Control System Co. | Xia J.,Beijing Kedong Electrical Power Control System Co. | Chen Z.,State Grid Corporation of China
Proceedings of the 5th IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies, DRPT 2015 | Year: 2015

Based on the part of DTS in smart grid dispatch control system, we have a research on steady-state simulation model of multi-terminal VSC-HVDC (Voltage Source Conveter-High Voltage Direct Current) and hybrid solution algorithm of AC/DC system, and propose the alternating solution algorithm based on the Newton-Raphson method in this paper. Finally, a simulation example is given, and the correctness and effectiveness of the proposed model and algorithm in this paper are verified by the results of example. © 2015 IEEE.


Chen H.S.,University of Science and Technology Beijing | Chen H.S.,Beijing Key Laboratory of Knowledge Engineering for Materials Science | Shang X.W.,Beijing Kedong Electrical Power Control System Co. | Ye F.,Beijing Kedong Electrical Power Control System Co.
Advanced Materials Research | Year: 2013

With the rapid development of mobile ad hoc network, energy and trust are important to the network. Energy consumption and trust routing scheme are the main issues in mobile ad hoc network. Trust routing is related to many factors such as hop number, node residual energy and node behavior. To use the multi-source information, multi-agent information fusion method is used to design trust routing scheme. The definition of trust routing is proposed. Ad hoc On-D emand Distance Vector (AODV) routing protocol is used to validate trust routing scheme, Route Reply (RREP) Message is extended to record node residual energy and behavior information. NS-2 simulator is used to simulate different network scenarios. Simulation results show that low power trust routing scheme can improve the security and efficiency of network, the scheme is sensitive to node residual energy, so it extends the service lifetime of the network. © (2013) Trans Tech Publications, Switzerland.


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.


Bo H.,State Grid Corporation of China | Jun L.,State Grid Corporation of China | Hongbo M.A.,Beijing KeDong Electrical Power Control System Co. | Jin X.,Beijing KeDong Electrical Power Control System Co.
International Journal of Simulation: Systems, Science and Technology | Year: 2016

Electric power communication is a hot research topic in the world. A number of agreements have been formed on power communication and realized in practice. Through detailed research on power system and exploring big data technology, this paper designs an overall framework of power communication platform for large data. We give the overall structure of the power communication platform and its various modules, and introduce the function of each module and the function of the power system. Then we analyze the power information reasoning and decision making technology based on ontology, which endows it with the ability for intelligent decision making to improve the communication efficiency. In the realization module, we give a detailed design and function realization of the key modules, and put forward the realization method of communication platform for protocol adaptation and data recognition, processing and storage. Also we design the database of electric power communication platform based on the database of traditional communication system. Finally, we test the protocol adaptation function, communication function and data separation and storage function for it. The test results show that the power communication platform can be used to determine the appropriate communication protocols and methods according to the specific business features and link conditions. It has no effect on the quality of communication in the process of communication switch, and the power communication platform based on large data has high correctness and reliability. © 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.


Patent
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.


Patent
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.

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