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MEZGA, Z., ĆATIĆ, D.
CHP AS A POWER BACKUP FOR THE DISTRIBUTION MANAGEMENT CENTER AND AS AN EXAMPLE OF COST-EFFICIENT ENERGY MANAGEMENT AT THE OFFICE BUILDING OF ELEKTRO MARIBOR
KOMUNALNA ENERGETIKA / POWER ENGINERING, 8
The installation of combined heat and power (CHP) as a power backup for the users of Elektro Maribor’s Distribution Management Center (DMC) at the office building at Vetrinjska ulica 2 was the result of analyses of synergetic effects of two independent projects. The first project was the modernisation of the existing system of DMC uninterrupted power supply providing redundant backup power. The second project came about due to the requirements of an energy audit of the building. One of the priority investments was the renovation of the boiler room. Besides the replacement of the energy inefficient old boiler with a modern gas condensing boiler it was also proposed to install a small CHP gas unit.
By combining these projects after drawing up an investment programme, we decided to renovate the boiler room and to implement CHP as a permanent source of heat and also as backup power supply for DMC. CHP can operate in isolated operation mode in emergencies which provides a continuous electricity supply for DMC. This kind of CHP operation has many benefits: it is a unit for the production of electricity for DMC, the total electricity consumption at the production location is lower, heat production during the operation of CHP is constant and there is a guaranteed state grant for production sources. This CHP operating model represents a technically and technologically advanced process in the company which also provides financial savings.
SOVIČ, B., ROPOŠA, S., ĆATIĆ, D., GOVEDIČ, B., KORES, Č., MEZGA, Z., PREŠERN, M., SORKO, B., HORVAT, B., VARL, N.
ELEKTRO MARIBOR AND SMART CITY
KOMUNALNA ENERGETIKA / POWER ENGINERING, 22
Globalization and economic and technological changes put before us the task of how to simultaneously ensure competitiveness and sustainable urban development. Quality of life in the city is dependent on the residential, commercial, cultural, social and environmental conditions, as well as it depends of all of the services that the city provides to its residents. Group Elektro Maribor strives to integrate approach of providing the building blocks of the different areas of Smart City.
The construction of advanced metering system, which is next to information and communication technologies, one of the basic building blocks of Smart grids, energy consulting and energy consumption displays is in the quality of live area. In the future the main topic will be implementation of adaptation measures consumption and power management. Advanced technologies are an excellent bas for mutual cooperation areas dealing with different energy sources (water, gas, electricity). On the other hand, the advanced services are based on the use of new, more efficient ways to communicate with customers.
Area of Smart Economy refers to the Smart Grids, mobile payment and dematerialisation of documents. In the environmental field there are, next to the previously mentioned smart metering, smart buildings and smart lighting. eMobility, which can have a significant impact on reducing CO2 emissions and PM10 and PM2,5, contributes significantly to the Smart Mobility, Smart grids can, at least partially, solve problem in the operation of the distribution network that are due to the rising share of distributed generation units that are connected to the electricity grid.
Integration of building blocks, which is a new option and opportunity, will be possible with the active participation of conscious local communities.
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