Head Dependence of Pumped-Storage-Unit Model Applied to Generation Scheduling

• Main Authors: Cheng-Hung - Chen, 陳政宏
• Other Authors: Chi-Rei Wu
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/66465039313232043480

博士 === 國立臺灣科技大學 === 電機工程系 === 105 === This dissertation presents a head-dependent model for pumped storage units (PSUs) in a power system for short term generation scheduling over one week. A hydraulic system with upper and lower reservoirs each having their own in and out river flows is considered. Hydraulic conditions as well as head effects are explicitly modeled for both generation and pumping modes of the PSUs. The problem has a mixed-integer linear structure and is solved by Branch-and-Cut method to obtain a near-optimal solution. That takes advantage to solve a scheduling problem directly and to avoid the complicated iterations of a hydrothermal coordination program. Test results of hourly generation schedule including comparisons of pump efficiencies, hydraulic conditions, and operating costs of the PSUs for a real power system are presented.