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Lu M.-M.,Beijing Power Supply Company | Su Z.,Beijing Power Supply Company | Shang J.-F.,State Grid Corporation of China
Dianwang Jishu/Power System Technology | Year: 2010

Through leading in discrete stochastic Petri net theory, the internal equivalence and simplification technique for stochastic Petri net is researched, and a Petri net model of emergency aided decision-making system for typical power grids in China is preliminarily built. According to statistical data of joint anti-accident rehearsals, the parameters of the model are set, and the probability distribution of emergency aid decision-making time is obtained, and then by means of analyzing its random numerical characteristics the time performance is evaluated. The proposed evaluation method is suitable to general time constraint and various random distributions, and it offers a set of effective numerical calculation method for the analysis on the performance of power grid emergency aided-decision system.

Cui W.,North China Electrical Power University | Shi Y.,Beijing Power Supply Company | Sun B.,Beijing Power Supply Company
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2011

CIM model is extended and adjusted based on IEC61970/61968 standards to adapt to the transmission and distribution business. The concept of CIM is introduced, and several network structures in power system and two corresponding topology abstract methods are described. Combined with the business characteristics of GIS, PMS, and DMS, this paper makes the difference analysis of different system network resources models, points out the integration direction and data range, and makes unified abstract and expression on substation device and transmission and distribution equipment. The specific exchange mode and mechanism are illustrated by case and data, which supplies technical ways for implementing network data integration.

Wang H.,China Electric Power Research Institute | Yang L.-L.,North China Electrical Power University | Ji H.,Beijing Power Supply Company | Wang H.-M.,China Electric Power Research Institute | Zhou Z.-M.,China Electric Power Research Institute
2010 China International Conference on Electricity Distribution, CICED 2010 | Year: 2010

In this paper, a chilled water storage reconstruction program and its running strategy were proposed combining with the result of energy efficiency test on a building central air conditioning system, and compared operation cost before and after the reconstruction under the running condition and cooling load during test. The analysis results showed that the implementation of this reconstruction program will not only shift some load during the day but also can significantly save operation costs. © 2010 Chinese Soc for Elec Eng.

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