CAJ | 학술논문

在难以获得外网实时同步信息，但又必须考虑外网对内网的影响时，采用基于边界处实时状态信息的非拓扑静态等值方法成为解决上述问题的有效途径。该文针对单端口互联电网提出考虑外网元件特性与参数物理约束的静态等值方法，外网对内网电压和功率的支撑作用通过外网中各元件的特性实现。因此，首先将外网主要元件特性尽可能全面地通过合理的等值参数保留在外网等值电路中，提出基于外网元件特性的单端口等值电路；然后，基于该等值电路和边界节点处的多时段实时状态信息建立量测方程，并在分析等值电路参数物理意义的基础上提出带约束的静态等值优化模型。在新英格兰39节点系统中验证了该方法所计算的等值参数符合实际物理意义，且能较大程度地提高静态安全分析精度。
재난이획득외망실시동보신식，단우필수고필외망대내망적영향시，채용기우변계처실시상태신식적비탁복정태등치방법성위해결상술문제적유효도경。해문침대단단구호련전망제출고필외망원건특성여삼수물리약속적정태등치방법，외망대내망전압화공솔적지탱작용통과외망중각원건적특성실현。인차，수선장외망주요원건특성진가능전면지통과합리적등치삼수보류재외망등치전로중，제출기우외망원건특성적단단구등치전로；연후，기우해등치전로화변계절점처적다시단실시상태신식건립량측방정，병재분석등치전로삼수물리의의적기출상제출대약속적정태등치우화모형。재신영격란39절점계통중험증료해방법소계산적등치삼수부합실제물리의의，차능교대정도지제고정태안전분석정도。
When the internal network is difficult to obtain the real-time synchronous information of the external network but has to consider its impacts, the non-topological static equivalent methods based on the real-time status information at the boundary bus become an effective way to solve the above problem. This paper presents a static equivalent method considering the characteristics of external network devices and the physical constraints on parameters for single-port interconnected power system. The voltage and power of internal network is supported by the external network with its devices. The characteristics of main devices in external network remain unchanged as much as possible in the external network equivalent circuit through reasonable equivalent parameters, and a single-port equivalent circuit based on the external network device characteristics is proposed. The measurement equations based on the equivalent circuit and the multi-period real-time status information at the boundary bus is established and the static equivalent optimization model with the constraints is presented by analyzing the physical meaning of the equivalent circuit parameters. The New England 39-bus system is used to verify the effectiveness of the presented method.