Optimisation framework for development of cost‐effective monitoring in distribution networks

Abstract

This paper presents a novel optimisation methodology, Optimal Placement of Monitors (OPM Power ), for optimal device/monitor placement in distribution networks. OPM Power is developed based on gradient search and Particle Swarm Optimisation (PSO). The proposed method integrates network topology into search process via spanning trees and uses the historical experience for search guidance. The method is particularly suited for optimal placement problems in power systems. The application is illustrated on the problem of optimal monitor placement for estimation of voltage unbalance in a section of existing UK distribution network and in a generic distribution network. It is demonstrated that the proposed methodology outperforms generic integer optimisation algorithms which are widely used for optimal placement problems in literature, e.g. Genetic Algorithms (GA).

Review on Distribution Network Optimization under Uncertainty

“…Direct meter measurement is critical because of its accuracy and high influence in network analysis results. In the literature, it has demonstrated that different meter placement could greatly impact on the network analysis performance and eventually the network operation [35]. Thus, it is important to allocate the meters optimally around the distribution networks, and the analysis of meter placement strategy is attracting more attention than ever.…”

“…For state-of-the-art SE models, heuristic or suboptimal algorithms are used widely for optimal placement of measurement meters especially for the purpose of SE. In general in the design of an optimization framework, three aspects should be considered in order to efficiently and accurately search for the optimal (minimum or maximum) value [35]: (1) trade-off between exploitation and exploration;…”

“…In [35], the development of an optimization framework which is particularly tailored for optimal meter placement under the context of distribution systems was investigated. A cost-effective monitoring scheme using limited devices/meters was obtained by integrating network configuration in optimization searching.…”

Methodology for the analysis of voltage unbalance in networks with single‐phase distributed generation

“…Their residual part (i.e., the combined effect between DA −′ and FA − ) together with current DB − caused by the DG connected at B6 results in peak | − | at B6. The proposed approach is further validated on a 96-bus section of a generic UK distribution network [19,20], which is likely to be exposed to unbalance phenomena if unbalance sources exist in the network.…”

Pathway to cost-efficient state estimation of future distribution networks

“…The estimated results can be used for distribution network operation and control, e.g., voltage regulation, load compensator, congestion management, phase imbalance correction and reactive power compensation [21], etc. The performance of voltage unbalance at all buses can also be estimated using general SE through postprocessing the estimated three-phase voltages [22][23][24].…”