Electronic Database-Monitoring Tool and Quality Improvement of Supplied Electricity

The main aim of the research was to design an electronic database for transmission facilities (i.e. electricity supply network). The research task involves the following aspects: relevance of stated problem, development of information layers and corresponding attribute data through the geoinformation system and technology. The research showed definite results which were further incoporated into a graphically designed model of an electronic database, reflecting the information layers and the investigated range of primary consumers of future software product.


Introduction
Sustained socio-economic development of any region involves reliable electric power supply.In many cases, serious problems, not only for industries, but also for the community itself, could be power line breakdowns (transmission lines), especially, wire breakages.To prevent above-mentioned consequences, quality requirements in transmission facilities service were aggravated.According to RF Government Regulation № 160, dated 24.02.2009[1], all networked organizations should provide safe service and maintenance of all fenced-off areas embracing different transmission facilities and quality conformance inspection.

Research subject
Nowadays, urgent ecological, economic and social problem-solving includes the DB project and electricity transmission line maintenance within total forest areas, which, in its turn, is stipulated by such factors as partial forest clearing for overhead transmission lines to ensure power supply continuity and service.According to the data presented by JSC "Interregional Distribution Grid Company of Siberia" ("IDGC of Siberia"JSC) the main average percentage of accidents are initiated by two two sources: mechanical damage to overhead transmission lines (30%) and power line breakages as a result of timber felling during severe weather conditions (33%) [2].Most overhead transmission lines have been operating for more than 25 years (and even -50years).Monitoring data in tree growth and roading for the above-mentioned period are not available, whereas the legislative framework has greatly changed.Taking into account the complexity and multi-factor production problem solving, it is necessary to obtain accurate and reliable information, involving up-dated information and territorial remote sensing technology.
In recent years, major energy companies are paying more and more attention to the quality of their services.One of the determining factors of electricity supply continuity is regulated forest cleaning for overhead transmission lines.Due to the rapid development of geoinformation technologies, on-line monitoring of high-voltage transmission lines, including essential specifications has become possible.

Geoinformation Model
GIS design presupposes the object-oriented development of GIS layers would be maximal informative in descrtibing this or that desired object. 1 Corresponding author: ikonna@tpu.ruIn our case, the object was 35 kV electricity transmision line (further, HV line).An electronic database was designed for the HV line "Turuntaevo-Zarya" [3].All layers and attribute data were designed within the program QGIS and embraced the following operation steps.
First and foremost, geoinformation basis was selected from the existing built-in QGIS module, i.e. satellite image Bing and OpenStreetMap.Upon the importation of desired down-uploading files, the geodesic survey data proved to be sufficiently accurate with permissible error (PE), i.e. accordingly, the "Turuntaevo-Zarya" right-of-way precisely coincides with its present location (Figure 1).For improved processing and measurement of the total HV line length, a «power line» layer was designed.The specified attribute «voltage» characterizing the 35kV HV line was selected from power line property Table (Figure 2).The next operation step included the delineation of the forest area and the identification of tree species composition within the HV line zone (Figure 4).This plotted layer includes the forest layer and buffer zone.It should be noted that in some locations, one layer superimposes on another layer.In our case, the investigated HV line revealed 37 violations (Figure 5).These areas can be considered as high risk zones -loss of electrical connection (i.e.broken power lines) are usually unavoidable as a result of falling trees.Therefore, it is necessary to expand the forest clearing in these areas to established norms.

01039-p.3
The 2 nd International Youth Forum "Smart Grids" The most dangerous zones were identified and a tributary layer («road») was designed, displaying the closest route to the possible emergency place (Figure 6).

Research results
As a result of geoinformation database processing based on previous geodestic survey data "Turuntaevo-Zarya" 3540 pillars were plotted [5].In accordance with established regulations the buffer zone of above-mentioned HV line was plotted.The forest road of studied object was analyzed and then relevant layer as plotted.Further, the following aspects were described and determined: regulatory violations, HV line road width, number of recommended clearing sites, as well as plotted tributary road network layer to clearance sites.01039-p.4

Conclusion
It should be noted that such an electronic geoportal database is not only informative, timeconsuming, but also economic.The road clearing near HV lines minimizes the number of accidents occurring during power line breakage as a resdult of fallen trees.Precise calculations will ensure balanced deforestation.Ultimately, this electronic database would provide a fairly wide application range.
The following group of people could be interested in the application of such a geoinformation system [5]: • energy companies (to exclude overhead transmission line accidents and minimize all relevant risks); • public municipalities (to control unscrupulous suppliers of electricity); • forestry ( to control timber land holding around HV line areas); • physical entities (to have free access to the integral part of the server information).
DOI: 10.1051/ C Owned by the authors, published by EDP Sciences, 2014 ,