For SMART GRID FORUM 8 papers were presented out of a total of 8, which were included in the Conference programme.

After the presentation of papers, a brief but fruitful discussion developed. It can be said that in our country still the initial steps are being made, primarily due to the limited construction of distribution generators. Forum presented us with a tangible progress in Serbia compared to the situation in the UK, and it was given a new insight into the upcoming problems.

It was concluded that the trends in the development of smart grids are accelerating, the research is directed in several directions, but that there is still no clear answer about what is certain in this field. The only conclusion that is known is that all the activities are driven by profit and thus so the activities in this field.

It is expected that the situation in the region will continue in the direction of constructing new energy sources and that this will be followed up suitably.

Within EC-1, Distribution substations and power lines, 27 papers were presented out of a total of 28 papers included in the Conference programme. Prof. Dr. Dragan Tasić conducted the Session work with the assistance of expert reporters Ljiljana Funduk and dr. Vladimir Šiljkut. After presenting the papers, the following conclusions were adopted:

It was concluded that many aothors have considered the need of more active work on the regulations and technical recommendations. As preferentail subeject 3 had not had papers, it is recommended to intensify all activities within this subject and to motivate poetnatial authors to write on it.

1. Presented unification of process sizes and graphic representations in dispatching centers of the ODS (NDDC / DDC / PDC / ODC) is unambiguously indicating the direction in which the Distribution System Operator (ODS) goes, in the implementation of the latest projects. The established goal of modernizing dispatch centers has an imperative to achieve the same information and telecommunication platform at the ODS level, creating all preconditions for the planned optimization of the number of dispatch centers in order to improve and optimize the overall performance management of the distribution system. The focus shifted to the organizational issues of the dispatching centers in relation to technological solutions, unambiguously indicates that the implemented solutions have proved good in practice, and that this is primarily due to the good strategic planning by ODS in the last couple of years.

2. Implementation of the automation solution for the medium voltage power distribution network (SNDM) has largely enabled the efficient SNDM network management, which reduced the need for engaging dispatching teams in the field when changing the network's reconfiguration (reconfiguration), either for the needs of the planned works or the location of the site failure after let-down. Solutions that are practically standard in the SNDM network have achieved a high degree of unification and standardization, which enabled a very efficient way of their integration into SCADA systems, but also practically centralized maintenance of embedded equipment. The presented papers pointed out new tendencies and conceptual solutions for the equipment for the automation of the SNDM network, one focus being placed on latest solutions for the indication of the failure of the fault flow, which is very important considering that more than a decade of its use in the SNDM network, on a new technological wave come the solutions that significantly increase the level of functionality of the device through the implementation of modern protocols with advanced algorithms for more precise identification of the failure of the fault flow. And if it was a conclusion from the previous Counseling, it was reiterated that the implemented, but also planned automation solutions, must largely be in line with the recommendations and technical specifications of the automation equipment that should be finalized and adopted at the ODS level.

3. In recent years there have been significant changes in terms of the characteristics of the SNDM network, since SNDM networks are largely becoming active networks, due to the increasing presence of distributed production within it. The change in the flow of energy in the SNDM network has caused the need for the use of protective devices in the depth of SNDM at the points of connection of the distributed production, but also with the increasingly efficient coordination of the operation of protective devices in order to achieve the desired level of selectivity after the occurrence of the outburst. Since the distributed production is largely connected through automated connection and distribution devices (PRPs), but also that the connection initiators are significantly automated, it is evident that there is a need to make a new approach in the consideration of all the necessary protection schemes to be implemented in the protection settings plan in the SNDM network.

4. Presented reports showing the directions of development and the degree of implementation of information and telecommunication systems within the ODS by individual distribution areas, unambiguously indicate that telecommunications in electricity distribution systems are increasingly occupying a focus, as there is a need to increasingly exchange large amounts of information between dispatching centers and embedded equipment along the depth of the SNDM network, but also between the end devices themselves. The approach in solving the coverage with the telecommunication system in a certain area of the ODS led to the expected results that the designed telecommunication system achieved, which unambiguously set the direction for further development of telecommunication systems in other distribution areas that do not or that partially have the necessary telecommunication infrastructure. Also, the emphasis were put on a need to implement a unique telecommunication infrastructure at the level of dispatch centers, primarily based on radio systems, that would enable efficient communication with dispatching teams on the ground.

In addition to analyzing the impacts on losses and voltage variations in the distribution network, which was discussed in some presented papers, it is also necessary to analyze the impact of distribution generators on other business processes in the distribution system. First of all, it is necessary to analyze the impact of distribution generators on the long-term distribution grid development planning process, taking into account all relevant aspects of planning (investment costs, costs of losses, costs of outages, short-circuits values, operative restrictions).

For the purpose of obtaining higher efficiency in electricity distribution, it is necessary, among other things, to continuously monitor the total electricity losses (technical and non-technical) on all voltage levels. In order to allow quality monitoring of the site of electricity distribution and quality assessment of energy and power in the grid, appropriate tools need to be used (e.g. tools which allow grid modeling, topology analysis, state estimation, load flows calculation) within a single distribution management system (DMS), which is one of the basic components required for implementing the Smart Grids concept. The above system needs to integrate the corresponding data on all grid elements (e.g. from GIS) and the best quality data in the grid consumer nodes (e.g. from the AMI/MDM and CIS systems). On the basis of such a system, macro-localization of increased non-technical losses can be carried out, and based on that, also by applying appropriate technical solutions, micro location of unauthorized consumption can be conducted as well.

In this session, 16 of 18 accepted papers were presented, covering all seven given preferential subjects. The expert reporters for some preferential subjects were Miroslav Dočić, Mirko Luković, Dr. Dragoslav Jovanović, Saša Minić and Dr. Saša Đekić.

CONCLUSIONS