Reactive power deployment and cost benefit analysis in DNO operated distribution electricity markets with D-STATCOM

The aim of this paper is to analyze unbalanced radial distribution systems(UBRDS)with the distribution static compensator(D-STATCOM).The main objectives of this paper are D-STATCOM allocation in UBRDS with an objective of providing reactive power support to enhance voltage profile and reduce line losses of the distribution network,determination of optimal D-STATCOM rating subjected to minimization of total cost,and impact of D-STATCOM placement on improving power factor and savings in cost of energy loss.The analysis is conducted on a large industrial load model with light,medium and high loading scenarios.Further,the impact of load growth is also considered for better planning of the power distribution system.The results are obtained on standard 25-bus UBRDS to check the feasibility of the proposed methodology.

考虑电价不确定性的主动配电网网损成本鲁棒优化模型

提高配电网的运行效率和可靠性是配电网运营商优化系统运行的主要目标,在开放电力市场中,市场电价波动可能会使得上述优化目标下不能够最小化配电网的网损成本。基于此,构建考虑电价不确定性的配电网运营商网损成本鲁棒优化模型。分析不同优化目标下电价波动以及需求响应和储能调度策略对配电网运行网损成本的影响,并给出在不同情境下的最优运行策略。IEEE 33节点配电网的仿真结果验证了所提模型的有效性。

计及不同主体的配电网-微电网日前联合优化调度方法

为了实现不同主体间利益的合理分配,文章提出了一种配电网–微电网日前联合优化调度方法。首先,在考虑配电网运营商(distribution network operator,DNO)与微电网(microgrid,MG)等不同主体的条件下,分别构建了其优化调度模型。其中,DNO的调度目标是收益最大化,微电网的调度目标是运行成本最小化。随后,基于博弈论构建了配电网-微电网日前联合优化调度方法,并采用KKT(Karush-Kuhn-Tucke)方法对上述问题进行求解,从而获得纳什均衡点(Nash equilibrium,NE)。算例结果表明,日前优化调度方案能够满足DNO与微电网的运行约束,同时有效平衡配电网与微电网的利益,实现DNO与微电网调度目标的最优化。