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A detailed operation simulation based planning alternative evaluation method of power system with large-scale wind power is proposed in this paper, since the traditional power system planning evaluation methods are not applicable because of the intermittent and uncertainty of wind power. The evaluation framework of this method is established with power system operation simulation in the chronological...
A discussion of the technical analysis and results (including both steady state/reliability and economic components) for a study spanning a broad portion of the country will be presented. This paper will include analysis of and commentary on the performance of three extra high voltage classes and their applicability for large-scale, long distance energy delivery. Finally, a discussion of the challenges...
This paper presents a model for solving the multistage planning problem of a distribution network. The objective function to be minimized is the net present value of the investment cost to add, reinforce or replace feeders and substations, losses cost, and operation and maintenance cost. The model considers three levels of load in each node and two investment alternatives for each resource to be added,...
In this paper a new algorithm for determination of optimal active power reserve capacity requirements and energy and spinning reserve allocation in power system during the 24 hours is presented. In the proposed method, the optimum amount of reserve capacity per hour is determined proportional to network security level required by the system operator. In this way, it is essential to define a proper...
Many technical areas in power systems require the simultaneous optimization of multiple and often conflicting objective functions with complicated non-linear constraints. The recent studies on multi-objective evolutionary computation methods have shown that the population-based stochastic algorithms are the most attractive approaches for this class of problems. Moreover, these methods can be efficiently...
With the continuous development of Shanghai 110kV power grid, planners raise higher and higher demands to selecting suitable connection mode for different regions. From the characteristics of different regions in Shanghai, this paper made theoretical technical and economic study on connection modes corresponding to different 110kV power transformer capacity through establishing a reasonable mathematical...
Power supply reliability is one of the main criteria in estimation of power system networks. The decisions on radical changes in branch of electric power control and trade are still caused by essential monopolization, then reasoned with politicians, public, economic and technical factors and not less with international influence followed by ascendance to international alliances and wherewith connection...
In order to make up for the deficiencies of centralized power production and distant transmission, microgrid becomes a hot topic of research in distributed energy systems in recent years, along with the increasing distributed generation systems, the improvement of information technologies, the development of the power market and the shock of serious blackouts. And they will play an important role...
The Pareto ant colony algorithm (PACA) for multi-objective power network planning is presented according to the current situation of resolve multi-objective power network planning by translate multi-objective problem to single-objective problem. The weights are determined randomly for each objective, make all the objective have the same status and avoid the difficulty of determine weights. It can...
This paper reviews literature that identifies the need for decision-making associated with the design and operation of electric power grids including microgrids. In particular, it examines the current applications of analytic hierarchy process (AHP) as the decision-making tool for electric power grids and microgrids. AHP is a decision making tool based on expert judgments that has been successfully...
This paper discussed the basic concepts, criteria, procedures and methods in probabilistic transmission planning. The main purpose is to capture probabilistic characteristics in power system planning including uncertainties in load forecast, generator locations, and random failures of system equipment. Two key steps in probabilistic transmission planning are probabilistic reliability evaluation and...
Summary form only given as follows. A price structure for providing reactive power service and control based on optimal power flow (OPF) approach is developed. The cost of reactive power support service is determined based on capability and contributions to the improvement of system performance such as security, reliability and economics, by computing sensitivity of objective function with respect...
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