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Han X.,Wuhan University | Liu J.,Taizhou Power Supply Company | Liu D.,Wuhan University | Liao Q.,Wuhan University | And 2 more authors.
Asia-Pacific Power and Energy Engineering Conference, APPEEC | Year: 2014

The traditional methods used for distribution network planning are challenged because of the access of the stochastic distributed generation. A new distribution network planning model is proposed by converting the distribution network planning with distributed generation into solving the Steiner tree problem. Moreover, in order to solve the problem that the time of calculation multiplied along with the increase in the amount of Steiner nodes, an improved particle swarm optimization algorithm is proposed to solve the Steiner tree Non-deterministic Polynomial problem. In this algorithm the problem of premature convergence is solved by applying a small disturbance to the global optimum and the searching results are more reliable and accurate by improve the search ability for global optimum. Typical results of the proposed algorithm and the traditional algorithm are further illustrated and compared through an actual 54 nodes system to prove the validity of the methods in this paper. © 2014 IEEE. Source

Shi L.,Hohai University | Zhang L.,Jiangsu Electric Power Company | Chen S.,Taizhou Power Supply Company | Zhuang M.,Danyang Power Supply Company
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | Year: 2012

The linearized model of multi-machine power systems with a flywheel energy storage system(FESS) is derived, and the feasibility of damping multi-mode oscillations with a single FESS is proved by application of damping torque analysis (DTA). Two FESS-based stabilizers are superposed on two independent control loops of the FESS, the active power control loop and the voltage control loop, to damp multi-mode oscillations. The control loops and the feedback signals are selected for each mode based on the controllability and observability of the modern control theory. And the parameters of the FESS-based stabilizers are tuned by the improved particle swarm optimization (IPSO) algorithm. Taking a four-machine power system as an example, the damping ratios of the two oscillation modes are improved from -0.013 and 0.052 to 0.106 and 0.102 by a single FESS with two additional stabilizers, indicating that the single FESS has the ability of damping power system multi-mode oscillations. Source

Xu Y.,Qiongzhou University | Wang Z.,Northeast Dianli University | Zheng Q.,Chengdu University of Technology | Han Z.,Taizhou Power Supply Company
Proceedings of the 2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2012 | Year: 2012

As to the major building in the city currently ,the traditional fixed signs of the fire evacuation system can't meet people's security needs any longer and the intelligent fire evacuation system has been the current development direction.This article combined the Dijkstra's algorithm with intelligent fire evacuation system self-developed which identified the fires by analyzing the fire linkage signal received and thereby determine the best route to evacuate the people in the fire region safely. Copyright © 2012 by The Institute of Electrical and Electronics Engineers, Inc. Source

Liu Y.,Nanjing Power Engineering Design Co. | Wu N.,Nanjing Power Engineering Design Co. | Yin J.,Taizhou Power Supply Company
Dianli Zidonghua Shebei/Electric Power Automation Equipment | Year: 2010

Jubao 220 kV substation has to adopt all-indoor layout because of area restriction, which applies the B-3 and B-4 schemes of the power transmission & substation engineering typical designs of State Grid (the 220 kV substation section). The compact layout design should meet the requirements of safety distance among equipments and building, and carefully arrange the cable pathways for different voltage levels. Its influencing factors, equipment disposal and cable arrangement are analyzed and the cooperation among different departments is discussed. Source

Yang Z.-Y.,Changzhou Power Supply Company | Xu S.,Jiangnan University | Xu X.-T.,Taizhou Power Supply Company
2010 China International Conference on Electricity Distribution, CICED 2010 | Year: 2010

In view of analysis and comparison of present high-voltage large-capacity D-STATCOM circuit structure, especially advantages and disadvantages of Δ-cascaded structure and Y-cascaded structure, then it proposes and describes a Y-cascaded structure, the link of which is composed of two back-to-back H converters. Current compensation algorithm based on coordinate αβ conversion, fault links bypass tolerance, and its correlative CPS-SPWM are proposed respectively, the experimental results of 1.14kV/100kVA prototype testify the validity and the effectivity of the proposed structure and algorithm. © 2010 Chinese Soc for Elec Eng. Source

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