| Summary: | 碩士 === 大同大學 === 電機工程研究所 === 90 === The liberalization is the major trend of power industry reform in the modern countries. The authorities responsible for the power industry of our country, Ministry of Economic Affairs, has realized that the liberalization and privatization of the electric power industry is an unavoidable trend, and began to prepare for opening the market of power generation to Independent Power Producers (IPP) in 1993. After the first, second, and third stages of opening up to IPPs, the market of power generation has opened to 9 private companies. All of the IPPs sign a 25-year Power Purchasing Agreement (PPA) with the Taiwan Power Company (TPC). The PPA stipulates that TPC's purchasing power rates from IPPs are divided into two parts: the energy rate and the capacity rate. These two rates will be fixed after the IPPs tendered bid and were elected.
TPC's purchasing power rates from the IPPs opened at the third stage is an unified price, that is, the incremental costs of TPC purchasing power from each of the IPPs opened at the third stage are the same. Traditional economic dispatch decides the power output of the units in power system by the incremental costs of the units. However, the incremental cost of the IPP units is a constant value, some of them even possessing the same constant value with each other. Therefore, all kinds of economic dispatch program are not suitable to use under this condition. This thesis will adopt the Penalty Factor of units to separate the unified constant incremental cost and will adopt the DP-STC method to integrate the generating units of TPC and IPPs and to calculate the 24-hour unit commitment. This method not only totally matches the stipulations in the PPA, but also minimizes the production cost of the power system.
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