Unit commitment using quadratic programming and unit decommitment
Unit commitment using quadratic programming and unit decommitment
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使用二次规划的机组承诺和机组退役
DOI：
10.1109/pesgm.2012.6344882
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
K. Furukawa
中科院分区：
文献类型：
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作者：
T. Sawa;K. Furukawa
提出了一种基于二次规划和机组退役（QPUD）的发电调度方法。该方法的优点是可以同时解决机组投入和经济负荷调度问题。我们将单元状态的二元变量松弛为连续变量，将QP应用于问题。如果一个大于零的变量被设置为一个，另一个被设置为零，则进行初始单位承诺。然后，在所有时间范围内仅为一个机组设置连续变量，在这种情况下，使用QP制定发电计划。如果这个单位连续变量等于零，则可以取消提交，其他变量设为1。这些过程将变量的值收敛到0或1，并减小问题的目标函数，即燃料和启动成本的总和。我们将该方法应用于一个由29个热电机组组成的日发电调度测试系统。该计划满足所有约束，包括负载-功率平衡、运行储备、最小启动/停机时间和燃油消耗。与传统的优先发电方法相比，发电成本降低了0.088%。这证明了所提方法的有效性。
We have developed an innovative power generation scheduling method using quadratic programming and unit decommitment (QPUD). The advantage of using our method is that it can simultaneously solve unit commitment and economic load dispatch problems. We relax the binary variables of the unit state into continuous variables to apply QP to the problem. The initial unit commitment is made if a variable of more than zero is set to one and the other is set to zero. Then continuous variables are set at all time horizons for only one unit and in this condition a generation schedule is made using QP. If this unit continuous variable is equal to zero, it can be decommitted and other variables set to one. These procedures converge the value of the variables to zero or one and reduce the objective function of the problem, which is the sum of fuel and start-up costs. We applied this method to a test system of daily generation scheduling that consisted of 29 thermal units. The schedule satisfied all constraints, including load-power balance, operation reserve, minimum up/down-times, and fuel consumption. Generation costs were reduced by 0.088% compared with the conventional priority method. This demonstrates the effectiveness of the proposed method.