Study On The Smart Dispatching Theory And Managing Model Of Regional Power Grid

The past few years, with the concept of the smart grid, State Grid Corporation of China established the development strategy of the smart grid. The regional power grid, as an important part of the smart grid, this paper researched the integration of regulation, state estimation and intelligent community as followed.(1) The future regional power grid integration of regulation mode was presented.This chapter respectively summarizes the key techniques of transmission, distribution and user in the smart grid, and analysis the influence of the regional power network and the user which are caused by the key technologies in smart grid, obtains the changes of the grid structure in the form and the dispatch operational mode. Analysis of the characteristics of the existing operation mode of dispatching center, substation monitoring center, operation and maintenance centered. Explore the construction of the regional power grid to meet the intensive management of the scheduling control integration ideas from many aspects of the operation and management, business processes, the key technology in smart grid, etc. Provide a reference for the regional power grid dispatching control integration and management practices.(2) The state estimation based on the measurement technique of smart grid was presented.State estimation is a Core Function of Energy Management System (EMS) and the foundation of intelligent scheduling. Perfection and optimization of state estimation can makes power grid more reliable and safe, and ensure the stability of power Systems as well. Considering the characteristic of Electronic current Transformer and base on the criterion of the relation between Current samples values and alternating current measurement amplitude, this paper proposes a method of detecting the resistance of abnormal data through sampling value Inspection with comparing amplitudes, and the reliability of this method is demonstrated by simulation analysis. The paper proposes a new algorithm of state estimation to get the dynamic process of power grid after disturbance using fast, time-scale PMU measurements. The algorithm uses the results of traditional state estimation before disturbance as the initial state and the unobservable network for PMU measurements is equivalent. The varied dynamic process of power grid can be estimated once PMU measurements for generators are obtained. Furthermore, the feasibility of the algorithm is demonstrated.(3) The operation and management mode of the smart community was presented. As an important part of the future regional power grid, the integration of regulation mode of the intelligent community had a highly value to be researched. First, I discussed the generating characteristics of microgrid distributed powers and studied on the influenced factors of distributed powers output. And then the microgrid optimization operating mode is discussed. Set the minimum cost as target function to solve optimization operation mode. Second, I discussed the operational and commercial promotion modes and considered their different characteristics. Put forward the commercial promotion and management model. Finally, I put forward the coordination model between the microgrid of based on the demand response and grid. Study on the coordinated operation mode within multiple microgrid. And calculated the daily generation scheduling according to the actual data to verify the validity of the model...