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Short-term Optimization Dispatching Of Cascaded Hydropower

Posted on:2004-05-06Degree:MasterType:Thesis
Country:ChinaCandidate:B Z YuanFull Text:PDF
GTID:2132360095451379Subject:Water Resources and Hydropower Engineering
Abstract/Summary:PDF Full Text Request
As to the situation that long-term dispatching has weakness to the real-time dispatching, there is a emergent requirement from the power plant press that the theory circles should make a deep study into the shot-term dispatch theory which can be the guide of the operation. In this article, the author study the short-term optimization dispatching of cascaded hydropower in order to get a practicable mathematical model and arithmetic.Basing on deep analysis and generalization of YILIHE cascaded reservoir, the author set up a short-term dispatching mathematical model and an inner-plant economical operation model to simulate the real operation process. Dynamic Programming Method (DP) is effective to solve the several problem and Discrete differential DP (DDDP) is a reduce dimension tool. So the Dynamic Programming Method (DP) is chose as the optimistic tool. By studying factor of short-term optimization dispatching of cascaded hydropower, summarized regularity of short-term optimization dispatching of cascaded hydropower and inner-plant economical operation.The optimistic model has take the maximum and minimum power restriction and the "power forbidden zone". Because the cascaded flow-thought delay time.daily power benefit has affected not only by previous day but by next day, daily power benefit is composed of "plant day" part and "effect day" part.Based on the theory analysis, author developed a program what can well describes the cascaded reservoir short-term optimistic dispatch system model. It is developed under windows98 system, by using Visual Basic 6.0, brings the OOP method into the programming and solving of the model. It has friendly graph user interface and powerful graph creating capability. The operation data is used more safely by embedded, thus the maintenance and extending of the program becomes easy.The program also has taken inner-plant economical operation into account. From the simulate-optimistic calculate, it is proved that the model and arithmetic is practicable and can be used as the guideline of opertation.
Keywords/Search Tags:cascaded hydropower, short-term optimization dispatching, dynamic programming, inner-plant economical operation
PDF Full Text Request
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