A calculation system and method for theoretical action electric quantity of primary frequency modulation of hydroelectric unit
A hydroelectric unit, theoretical technology, applied in the direction of calculation, data processing applications, instruments, etc., can solve the problem of inaccurate theoretical action integral power and so on
Active Publication Date: 2019-11-01
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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This shows that it is not accurate to use the frequency-time relationship curve to calculate the theoretical action integral power
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[0066] The core of the present invention is to provide a calculation system for the theoretical action power of the primary frequency modulation of the hydroelectric unit. According to the simulation model of the hydroelectric unit, the theoretical active power of the hydroelectric unit is obtained, and the relationship between the theoretical active power and time is used to obtain the theoretical action integral. The theoretical action integral power obtained in this way is more accurate; another core of the present invention is to provide a method for calculating the theoretical action power of a hydroelectric unit for primary frequency modulation.
[0067] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, th...
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The invention discloses a hydroelectricity generator group primary frequency modulation theoretical motion electricity quantity calculating system and method. The method comprises the following steps: an object guide vane opening degree signal of a water turbine group can be obtained via an electronic regulator model according to frequency deviation and active power deviation or guide vane opening degree deviation, an actual guide vane opening degree signal can be obtained via a guide vane execution mechanism model according to the object guide vane opening degree signal, theoretical active power can be obtained via a water turbine prime mover model according to the actual guide vane opening degree signal, and the water turbine prime mover model is an ideal water turbine model by which only rigid water hammer is considered; a hydroelectricity generator group primary frequency modulation theoretical motion integral electricity quantity can be obtained via a theoretical motion integral electricity quantity calculating module according to a relation expression between theoretical active power, time corresponding to the theoretical active power and a theoretical motion integral electricity quantity. According to the hydroelectricity generator group primary frequency modulation theoretical motion electricity quantity calculating system and method, the theoretical active power of the hydroelectricity generator group can be obtained via a simulation model of the hydroelectricity generator group, the theoretical motion integral electricity quantity can be obtained via a relation between the theoretical active power and the time, and accuracy of the theoretical motion integral electricity quantity which is obtained via the mode can be improved.
Description
technical field [0001] The invention relates to the technical field of primary frequency modulation of hydroelectric units, in particular to a calculation system and method for the theoretical operating power of primary frequency modulation of hydroelectric units. Background technique [0002] At present, among the factors affecting power quality, grid frequency accounts for the main part. The primary frequency regulation of hydropower units means that when the grid frequency fluctuates, the speed control system automatically adjusts the guide vane opening according to the frequency difference between the grid frequency and the rated frequency, and changes the output of the unit to adapt to the load change. As one of the basic auxiliary services, the primary frequency regulation service is a service that the power grid requires the power plant to provide. If the power plant cannot provide a frequency regulation service due to its own reasons or the frequency regulation serv...
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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06
Inventor 李玺徐广文黄青松姚泽
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID