Evaluation method of maintenance reserve capacity in power system planning
A reserve capacity and power system technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of unusable maintenance reserve capacity, evaluation, etc.
Active Publication Date: 2016-06-08
GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD +1
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[0004] The technical problem to be solved by the present invention is to provide an evaluation method for maintenance reserve capacity in power system planning, and solve the problem that the traditional standby method cannot be used for the evaluation of maintenance reserve capacity in power system planning
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[0064] The present invention proposes a method for evaluating spare capacity for power system maintenance. The algorithm flow chart is as follows figure 1 shown. The range of the dotted box is the random simulation of the uncertainty of the maintenance level according to the constraints. There are two ways of stochastic simulation, one is to give the number of simulations, and stop when the simulation reaches a given number; the other is to give a variance coefficient, calculate the variance coefficient of the objective function, and stop when it reaches a given value; the dashed box The following is the procedure for estimating the maintenance spare capacity with the heuristic method. Here, an embodiment is taken as an example, and the first method is selected by random simulation, and the present invention is described in units of ten days.
[0065] There are 20 thermal power plants in this embodiment with a total of 54 generating sets. The overhaul period of this embodim...
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A method for evaluating repair reserve capacity in electric power system planning includes the steps that S1, data are input to determine an objective function; S2, constraint conditions are input; S3, units are arrayed according to capacity; S4, whether a simulation number of times reaches a value given in advance or a variance coefficient reaches a value given in advance or not is judged, if yes, the method is turned to the S10; S5, stochastic simulation is carried out on repair grade indeterminacy according to the constraint conditions, and a unit repair grade combination is determined; S6, whether all the units are arranged or not is judged, and if yes, the method is turned to the S9; S7, a continuous time frame with the smallest load mean value is searched on a load curve, wherein the time frame is equal to the repair time of the units; S8, the load of the time frame is corrected, and the method returns to the S6; S9, objective function values are calculated, the objective function values and the corresponding repair reserve capacity are recorded, and the method returns to the S4; S10, all the objective function values are compared, and a corresponding feasible range of the repair reserve capacity is output under the condition of the smallest objective function value.
Description
technical field [0001] The invention relates to a method for evaluating spare capacity for maintenance in power system planning. Background technique [0002] In the field of power system planning, the evaluation of power system maintenance reserve capacity is the basis for power supply planning, grid planning and energy economic analysis. To evaluate the maintenance reserve capacity, it is necessary to simulate the maintenance schedule of the generator set, and then evaluate the maintenance reserve capacity of the system. At present, the unit maintenance plan arrangement is carried out in the ultra-short-term planning, and the waiting and standby method is mainly used. This method is based on the maintenance level and time reported by the power plant, that is, the maintenance demand to carry out the maintenance plan arrangement for the next year. Because of its concise concept, intuitive principle and less computational workload, the method has been widely used in the powe...
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IPC IPC(8): G06F19/00
Inventor 林勇郑秀波张永凯别朝红蔡广林左郑敏覃芸
Owner GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD