초록 ▼

Dynamic security analysis of a power system is divided into several diverse sub-problems, including sub-problems that may be analyzed using artificial intelligence (“AI”) technology. A rule-based topological analysis procedure distinguishes between outage contingencies that are definitely safe or ha

Dynamic security analysis of a power system is divided into several diverse sub-problems, including sub-problems that may be analyzed using artificial intelligence (“AI”) technology. A rule-based topological analysis procedure distinguishes between outage contingencies that are definitely safe or harmless to the integrity of the power system, and potentially severe outage contingencies that are harmful to the power system. Initial outage selection correctly relates the state of the power system before the analysis. By methodically and automatically identifying potentially severe outages, the need for extensive off-line studies based on time domain simulations is avoided, thus promoting computational efficiency. This methodology further provides automatic detection of critical interfaces, e.g., flows through which may significantly impact the post-contingency state of the power system.

대표청구항 ▼

A method for selecting fault contingencies to be evaluated in a real-time determination of their effects upon the dynamic security of a power system that includes power generators and power-carrying lines, the method comprising the following steps: (a) defining a full set of potential contingencies

A method for selecting fault contingencies to be evaluated in a real-time determination of their effects upon the dynamic security of a power system that includes power generators and power-carrying lines, the method comprising the following steps: (a) defining a full set of potential contingencies for said power system; and (b) using a computer system to apply a rule set including at least one interface rule to said full set to determine at least one sub-set thereof, said subset identifying contingencies that are potentially unstable to said power system; wherein said interface rule governs a cut-set defined by the following steps: (c) representing said power system as a collection of network nodes having inter-node connections represented as interconnecting arcs, wherein said network nodes are spatially identified such that power flow of said power system in any said arc goes from a first direction toward a second direction; (d) defining a said cut-set as a set of said interconnecting arcs that when removed from a connected said network separates said network into at least two second unconnected parts; (e) defining from a set of each said cut-set a minimal cut-set, wherein a said minimal cut-set is a cutset such that a subset set of said minimal cut-set arcs is not itself a cutset; and (f) arriving at a minimal cut-set that is not a subset of another cut-set.