-
1.发明申请公开(公告)号：US20200090285A1
公开(公告)日：2020-03-19
申请号：US16609177
申请日：2018-03-16
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Jianjian SHEN , Chuntian CHENG , Nannan ZHANG , Congtong ZHANG
Abstract: The invention relates to the field of hydropower scheduling, and relates to a method for short-term generation scheduling of cascade hydropower plants coupling cluster analysis and decision tree. Linear regression technique is adopted to determine a matching relationship of energy production between upstream and downstream hydropower plants. With the relationship, typical generation curves of each hydropower plant can be clustered from lots of historical data. These typical generation curves and impact factors of generation scheduling such as planned daily electricity, reservoir level, and power grid characteristics, are together trained to obtain decision-making library for generation scheduling of cascaded hydropower plants. Thus, the decision tree method can be used to rapidly determine an operational scheme for generation scheduling of cascaded hydropower plants. Finally, a correction strategy for operation constraints is introduced to ensure feasibility of the operation scheme. The invention can quickly obtain generation schedules of cascade hydropower plants.
-
公开(公告)号：US20230268742A1
公开(公告)日：2023-08-24
申请号：US17909594
申请日：2021-10-19
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Jianjian SHEN , Yue WANG , Chuntian CHENG , Binbin ZHOU , Congtong ZHANG , Lin HU
CPC classification number: H02J3/46 , H02J3/381 , H02J2300/24 , H02J2300/28
Abstract: The present invention belongs to the field of power system operations and provides a method for quantifying the flexibility demand and coordinating optimization of a hydro-wind-solar multi-energy complementary system. Firstly, the flexibility demand quantification method considering the uncertainty of wind and solar power output is constructed, and the wind and solar power output interval is divided by using quantile points to generate a set of output scenarios, and then the flexibility demand under each scenario is calculated. Based on the quantitative index of flexibility demand, an optimal operation model of hydro-wind-solar complementary system considering the minimum expectation of system flexibility deficiency is constructed to realize the optimal calculation of hydro-wind-solar complementary. By utilizing an actual wind-hydro complementary system of the Yunnan Power Grid, the model is validated for different new energy access ratios. The results show that the method of the present invention can give a complementary operation and scheduling scheme for multiple types of power sources under different conditions, effectively meet the flexibility demand of the system, reduce the abandoned power and improve the level of clean energy integration.
-
Search Results
2
records
(took 0.012 seconds)
