Abstract
The paper is concerned with the problem of placement of the minimum number of smart meters to ensure either the observability of all state variables in distribution network or the observability of voltage magnitudes. Voltage control is important in the distribution network with distributed generation sources which adoption can lead to unpredictable overvoltage exceeding admissible values. The algorithm for smart meters including measurements of voltage magnitudes and active and reactive current injections is similar to the algorithm of choosing the minimum number of phasor measurement units to ensure topological observability. Optimal control of the active distribution network operation requires monitoring to be based on a classical linear state estimation procedure. The results of the research demonstrate the effectiveness of the proposed approaches and are illustrated by example of a test distribution network.
Highlights
The enhancement of the energy efficiency can be achieved through the creation of intelligent networks including electric and pipeline distribution networks [1]
In the analysis of algorithms for placing smart meters (SM) in the distribution network, which are the focus of the paper, firstly SMs are supposed to measure phasors of current injections and voltage phasors, and it is shown how the replacement of voltage phasor measurements with the measurements of voltage magnitudes affects the placement of SMs
Optimal control of the active distribution network operation requires monitoring to be based on a classical linear state estimation procedure involving synchronized PMU measurements [9]
Summary
The enhancement of the energy efficiency can be achieved through the creation of intelligent networks including electric and pipeline distribution networks [1]. The main feature of active intelligent networks is the integration of a distribution network with a communication network and a state-of-the-art measurement system Such integration became possible due to the development of new information and communication technologies and the creation of Advanced Metering Infrastructure (AMI) [2]. In the analysis of algorithms for placing SMs in the distribution network, which are the focus of the paper, firstly SMs are supposed to measure phasors of current injections and voltage phasors, and it is shown how the replacement of voltage phasor measurements with the measurements of voltage magnitudes affects the placement of SMs. General approaches of the AMI organization for electrical and pipeline distribution networks allow to use similar algorithms for the placement of SMs. In the future, indications of such SMs will be used for energy consumption control, and for the state estimation of the relevant pipeline networks
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