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Henan’an, China

Ren G.W.,Xinyang Power Supply Company | Ren R.,Luoshan Power Supply Company | Dai H.Y.,North China Electrical Power University
Applied Mechanics and Materials | Year: 2014

An important part of power grid voltage stability online intelligent warning system was to research into the current Energy Management System real-time power grid operation parameters and power networks offline data splicing integration, form a set of online dynamic simulation trend data, and implement preventive voltage stability calculation. A splicing model of power grid online data integration and practice was established, and a grid online data splicing method was proposed, which had been verified by actual data. The method of practical data online and offline networks data integration can significantly improve the accuracy of the simulation data. © (2014) Trans Tech Publications, Switzerland. Source

Ren G.W.,Xinyang Power Supply Company
Advanced Materials Research | Year: 2013

Based on low frequency load-shedding practice experiments of Xinyang power supply company, work principles as 'three reports, one examination and a table modification' is proposed to improve the management of power grid in substitute district. The methods introduced in the paper is proved to be effective in the practice. © (2013) Trans Tech Publications, Switzerland. Source

Ren G.-W.,Xinyang Power Supply Company | Zhao J.,Henan Electric Power Company | Ren R.,Zhengzhou University
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | Year: 2010

Xinyang power grid is connected from Henan power grid through two 200 kV AC lines in the south. Because of the weak connection, the transient stability limit is 300 MW with 100 MW shortage while the electricity power transmission from Henan main grid to Xinyang. By analyzing the relay protection and switch action time, a method to improve the transmission capacity through determining the practical fault isolation time is discussed. The method can avoid load shedding strategy after contingency and enhance the stability of Xinyang-Henan transmission system, which is a new idea to such problem. Source

Long H.,Xinyang Power Supply Company
WIT Transactions on Information and Communication Technologies | Year: 2014

Multistage transmission expansion planning (MTEP) problem is a nonlinear and nonconvex optimization problem. The complexity will increase rapidly when the decision variables and the number of the planning stages increase. In this paper, we use an improved plant growth simulation algorithm (PGSA) to solve this problem. Due to the ineffective convergence of the classic PGSA, an optimal growth strategy based on greedy idea is applied to accelerate its convergence. As a result, the optimal solution can be obtained even faster. Then a test is performed on a 19-bus system to verify the practicability and effectiveness of the improved PGSA. Compared with the classic PGSA, it is showed that our algorithm has certain advantages on computation and convergence speed when solving MTEP. © 2014 WIT Press. Source

Jia Y.,Xinyang Power Supply Company | Liu J.C.,Xinyang Power Supply Company
Advanced Materials Research | Year: 2014

This paper introduces the reactive power compensation technology in the development of power system. From the new technology of reactive power compensation, controller, capacitor connection mode and switching on-off switch to briefly describes the current situation of the development of reactive compensation technology. © (2013) Trans Tech Publications, Switzerland. Source

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