Joint placement of phasor and conventional power flow measurements for fault observability of power systems

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Joint placement of phasor and conventional power flow measurements for fault observability of power systems

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The authors consider the problem of joint optimal placement of phasor measurement units (PMUs) and conventional power flow measurements to ensure observability under faulted conditions in power systems. The formulation is initially posed as a non-linear integer programming problem and then transformed into an equivalent integer linear programming (ILP) problem through boolean implications. The resulting ILP problem is solved for the optimal solution on IEEE 14, 30, 57 and 118 bus systems and a large 2383 bus Polish system. The placement results obtained with the proposed formulation require fewer PMUs for fault observability compared with systems with fixed locations of conventional measurements. The results thus potentially provide a more economical solution to observability under faults compared with those obtained solely with PMU placement.

Inspec keywords: power system faults; linear programming; power system measurement; integer programming; load flow

Other keywords: nonlinear integer programming problem; ILP problem; IEEE 14 bus system; phasor measurement units; equivalent integer linear programming problem; boolean implications; conventional power flow measurements; power systems; IEEE 118 bus system; fault observability; IEEE 30 bus system; IEEE 57 bus system; large-2383 bus Polish system; PMU placement; joint optimal placement

Subjects: Power system measurement and metering; Optimisation techniques

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