﻿ 多目标水火协调长期优化调度模型研究

# 多目标水火协调长期优化调度模型研究Study on Long-Term Scheduling Model of Multi-Objective Hydrothermal System

Abstract: Focus on the problem of long-term generation scheduling of hydrothermal system, this paper combines OPF and long-term optimal scheduling hydrothermal system that proposes the multi-objective model of generation maximization of hydropower, spillage minimization of hydropower, consumption minimization of coal-fired thermal power and line loss minimization. The model takes into account the hydraulic constraints, water balance constraints, security constraints in the power grid, power balance constraints and power supply. The multi-objective is transformed into a single objective by using the linear weighted sum method. On the basis of the typical daily load curve, hydrothermal power output distribution and the power flow and network loss are calculated with hydropower successive cutting load and thermal power equal incremental rate. Finally, the genetic algorithm is used to solve this problem. IEEE-30 bus system is used to verify the effectiveness of the proposed method. The numerical results show that the generation scheduling obtained from the proposed method can reduce the total loss of the power grid; it’s a feasible long-term optimal dispatching method.

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