Raster Map Extraction For PV Impact Study On Distribution Network

Loh, Ser Lee and Gan, Chin Kim and Salleh, Shaharuddin and Sarmin, Nor Haniza and Cheong, Tau Han (2017) Raster Map Extraction For PV Impact Study On Distribution Network. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The Malaysia Renewable Energy Act 2011 has been enacted and feed-in tariff scheme is introduced. It is expected that photovoltaic (PV) connection may increase in the future. The increasing number of distributed generation connected to the distribution grid may pose great challenge to the operation of distribution networks. However, it is expensive and not cost-effective for TNB to collect all of the network samples for distributed generation scenarios analysis due to the sheer amount of low-voltage distribution network samples. Given the advancement in Geographical Information System (GIS) such as the freely available Google map, it gives an excellent opportunity to exploit the existing GIS system for automatic low voltage network topology generation. The main objective of this research is to generate the network topology of road layer from a map provided by GIS into a connected graph and to produce base case from the resulting network to analyze the impact of photovoltaic (PV). Some techniques had been introduced for this extraction, including utilizing of thinning operator to determine the road centerlines, extraction based on contour partitioning and also color image segmentation technique. To extract the network, road layer will be extracted followed by detection of road intersections and their connections to obtain the set of nodes and arcs for the realistic network. A base case will be produced from the realistic network and the PV source will be inserted into the base case to analyze the effect of PV term of power and voltage drop. An analysis will be carried out based on different distribution of PV sources. The effectiveness of the algorithms and methodology will be tested by a developed tool.

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