| 摘要 |
<p>This invention relates to the arrangement of a switching network for use within an electrical power distribution system. There is an improved security of power delivery to various loads while at the same time enabling a reduction in the number of required circuit breakers and related gear. This network also presents additional options in design and operating modes, when applied to distribution systems. These options result in a reduction in the total installed capacity of the sources together with reduced continuous current and fault current ratings of conductors and interconnected apparatus. The invention provides a switching network comprising six conducting branches, each branch containing at least one switching means such as a circuit breaker. The branches are connected at their ends to form four 3-sided rings, each branch forming a side of and being shared by two of the rings. As a result, four triple-connected nodes are formed at the end connection points of the branches while the connections between adjacent pairs of switching means within a branch form double-connected nodes. These nodes serve as points for connection thereto of source/load elements, and each node is isolatable from the other nodes by the opening of a maximum of three of the switching means.</p> |
