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首页> 外文会议>IASTED(International Association of Science and Technology for Development) International Conference on Power, Energy, and Applications; 20060911-13; Gaborone(BW) >STUDY ON TRADE BENEFITS FOR SAPP ELECTRICITY MARKET AND EXPLOITATION OF AVAILABLE TRANSFER CAPABILITY OF INTERCONNECTED INTER-UTILITY POWER SYSTEMS
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STUDY ON TRADE BENEFITS FOR SAPP ELECTRICITY MARKET AND EXPLOITATION OF AVAILABLE TRANSFER CAPABILITY OF INTERCONNECTED INTER-UTILITY POWER SYSTEMS

机译：互联市电系统的SAP电力市场交易效益与可用传输能力研究

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摘要

Available Transfer Capability is a measure of the ability of interconnected electric systems to reliably move or transfer electric power from one area to another area by way of transmission lines between those areas under specified system conditions. The area in the context of this paper refers to configuration of generating stations, connecting transmission lines that define an electric system for a member utility forming the Southern African Power Pool (SAPP). The overall goal of this study is to determine the on-line Available Transfer Capability (ATC) of tie-lines between control areas of interconnected transmission systems of utilities forming the Southern African Power Pool subject to static as well as dynamic security constraints of credible contingencies such as line thermal limits, bus voltage limits, steady state stability limits, and transient stability limits; the first two being referred to as the soft limits, while the last two are the hard limits. The approach proposed for the study will take into account the nonlinear nature of interconnected electric systems so that the determination of ATCs between utilities, which form the control areas, will depend on the operating conditions of the interconnected systems and binding constraints. The operating conditions will therefore be defined in different time frames by the different load demands, network configuration, and different generation dispatches and the scheduled power transfers among the utilities participating in the SAPP electricity market. The determination of ATC will be contingent upon key constraints comprising: network configuration of utility power systems; systems capability to ride through dynamic power swings; and ability of systems to operate within emergency ratings.
机译：可用的传输能力是对互连的电气系统在指定的系统条件下通过这些区域之间的传输线可靠地将电力从一个区域移动或传输到另一个区域的能力的度量。本文中的区域是指发电站的配置，连接传输线，该传输线定义了组成南部非洲电力池（SAPP）的成员公用事业的电力系统。这项研究的总体目标是确定在可信突发事件的静态和动态安全约束下，构成南部非洲电力库的公用事业公司相互连接的输电系统的控制区域之间的联络线的在线可用传输能力（ATC）例如线路热限制，总线电压限制，稳态稳定性限制和瞬态稳定性限制；前两个称为软限制，而后两个称为硬限制。为研究提出的方法将考虑互连电气系统的非线性特性，以便确定构成控制区域的公用事业之间的ATC，将取决于互连系统的运行条件和约束条件。因此，将根据参与SAPP电力市场的公用事业之间的不同负载需求，网络配置以及不同的发电调度和计划的电力传输，在不同的时间范围内定义运行条件。 ATC的确定取决于关键约束条件，包括：公用电力系统的网络配置；系统克服动态功率波动的能力；系统在紧急等级内运行的能力。

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