Demonstration of the UPGRID project urban network of the future

Transcription

1 Demonstration of the UPGRID project urban network of the future SŁAWOMIR NOSKE, DOMINIK FALKOWSKI ENERGA-OPERATOR SA 1. Introduction Sustainable development, quality of supply and the efficient use of energy, as well as an increase in the share of renewable energy sources, are keys to the development of a power sector in the European Union in the coming years. These trends will have a significant impact on the operation of the power distribution grid. The network of the future will have to intelligently integrate the actions and behavior of producers, customers, and other entities operating in the energy market, ensuring high reliability and efficiency. In addition to the development of traditional technologies, essential elements supporting the development of networks are solutions in the intelligent network area. Compared to the traditional definition of the distribution network, the intelligent network includes new features for monitoring, control and data collection that had been and are being currently implemented in the distribution network on a small scale. Its innovation relies heavily on the integration of the many technologies applied up until this moment, including those that are in the early stages of development. The implementation of intelligent network solutions on a large scale, is preceded by research in the areas of demonstration (pilot) which evaluate their effectiveness and adaptability to all or selected areas of the network. The international UPGRID project studies selected technologies supporting the work of the LV network and its integration with the consumer side in the demonstration areas. 2. UPGRID project The UPGRID project is an international project being carried out in the European Union as a part of the Horizon 2020 program. The main objective of the UPGRID project is to develop functionality that serves the integration of LV and MV networks with the demand management systems and distributed generation. The above-described purpose is achieved by in-

2 630 S. Noske, D. Falkowski creasing the level of observability of the LV and MV networks and the ability to influence it. The project activities are mainly focused on the implementation of solutions supporting the management of the network, using the actual state and scheme of the LV and MV networks in dispatcher systems as well as information extracted from the analysis of DMS (Distribution Management System). The project involves 19 partners (distribution system operators DSO, research institutes, commercial companies, technical colleges) from 7 European Union countries. The design work is carried out within the framework of four areas of demonstration. DSO: ENERGA-OPERATOR, Spanish Iberdrola, Portuguese EDP and Swedish Vattenfall are leaders in these activities. The Polish consortium handling the demonstration area outside ENERGA-OPERATOR consists of: Gdańsk University of Technology, the Institute of Power Engineering with its branch in Gdańsk and the Atende Software company. Mikronika is also an important partner of the consortium that implements new functionality of the SCADA system. Four demonstration areas will accommodate and test new functionality systems which deploy advanced monitoring in LV and MV networks. The key task of the project is to use data from the AMI system to support network and asset management. A set of functionalities that will be implemented in the various areas of demonstration is shown in Table 1. Table 1. A list of functionalities implemented in the various demonstration areas of the UPGRID project 3. DEMO area The Polish demonstration area is located in Gdynia in the area of 3 districts: Witomino, Działki Leśne as well as Chwarzno. It includes 55 MV/LV substations, 49 secondary substa-

3 Demonstration of the UPGRID project urban network of the future 631 tions owned by ENERGA Operator SA and 5 secondary substations that do not belong to Distribution System Operator which supply nearly customers. The medium-voltage network consists exclusively of cable lines with a total length of km. The low-voltage network includes both, cable and overhead lines with a total length of 102 km. The area of demonstration is presented in the figure below. Fig. 1. Part of the distribution network in Poland where the demonstration area of UPGRID is implemented Smart AMI metering infrastructure, enabling remote meter reading, has been installed in the area of the pilot project. An increased level of observability of the MV and LV networks will be guaranteed in the project by the deployment of new solutions for the monitoring and control of the MV/LV substations (integrated AMI / Smart Grid cabinets). New solutions for the MV/LV stations integrate existing AMI infrastructure with the advanced automation of the MV network and expand it with new elements to monitor the MV and LV networks. The integration of solutions takes place both at the hardware level, ie.: a common communication modem for the purpose of network operation and AMI systems well as the information level, ie.: the measurements and alarm signals from the AMI meters, including the electric meters balancing the MV/LV stations, directly used to monitor the LV network operation and the load level of the MV/LV transformers. An integrated approach allows for the reduction of costs, the increase of the observability of the network and enables the implementation of new functionalities while ensuring the highest level of security. The new, integrated AMI / SG cabinets with different levels of equipment will be installed in all the MV/LV transformer substations, located in the DEMO area. Each station will be equipped with a short-circuit detection device in the MV network. In total, about 30% of the stations will be able to remotely control the switch installed in MV network. Thanks to the above mentioned solutions, it is possible to identify the exact location of the fault in the network and quickly isolate a damaged part. In order to increase the observability of the LV network, selected MV/LV substations will be equipped with switchgears, allowing the full monitoring of the electrical parameters of the field lines in the LV switchgear, along with information if a fuse is blown.

4 632 S. Noske, D. Falkowski The basic devices installed in the integrated AMI / SG cabinets will be: 1) A data concentrator and meter unit (DCMU) 2) A communication device (an integrated router and an Ethernet network switch) 3) A Remote Terminal Unit (RTU) with Fault Passage Indicator. 4) An uninterruptible power supply system (power pack, batteries, security). The figure below displays a general diagram of the fully equipped cabinets. Fig. 2. A diagram of the 2W version of the integrated AMI / SG cabinet Eight cable connectors, equipped with the fuse blow signalization and a voltage measurement device will be installed in the area of 7 LV circuits, powered by two MV/LV substations. 4. ITC solutions Currently, the support in the field of network management (SCADA, DMS) covers networks up to the MV level. There are no tools to operate the LN network. The UPGRID project in the Polish area of demonstration expands the functionalities of the LV (DMS LV) network management. DMS LV will be largely based on the information obtained from the AMI system and the data obtained from the monitoring of the LV network. A diagram of the IT solution, with the main functions marked, is shown in the figure below.

5 Demonstration of the UPGRID project urban network of the future 633 Fig. 3. The architecture of ICT solutions in the UPGRID project, Polish demonstration area The key functions of DMS are shown in the Table 2. Table 2. The range of functions carried out by the key modules of the IT system, built in the Polish UPGRID demonstration area LV SCADA/NMS Network Analysis (NA) Network Control and Management (NCM) Outage Management System (OMS) visualization of the LV network in the background of maps and schematics acquisition of new data from monitoring devices Visualization of information obtained from DMS LV interface adapted to the use of a dispatcher and to handle the new DMS functionalities estimation of loads in the LV network, based on historical and real time data, obtained from AMI analysis of the outflow of the LV network (power, voltage, current) analysis of technical losses management of distributed generation optimization of the LV network estimation of transformers overloading optimization of transformers operating parameters analysis of the power quality (off line) analysis of non-technical losses microgeneration Management: a) obtaining of active and reactive power states at specific intervals b) obtaining of power, voltage states and instantaneous values of currents as well as the Total Harmonic Distortion / PV switching FDIR LV failure detection based on the data from the concentrators (events), substation monitoring supporting the location of the point of failure by using information from smart meters calculation of SAIDI and SAIFI in the nn network, using information from smart metres

6 634 S. Noske, D. Falkowski Support of the operation of the network will be carried out through the SCADA interface (the SYNDIS system of Mikronika). The LV network layer will be created there with its geographical image and diagrams. The network model will be created based on the network information in the GIS system. Exchange of information between SCADA and DMS LV will take place on the basis of the CIM profile. 5. Conclusions The implementation of innovative solutions in the area of Intelligent Energy Network is one way to utilize the strategy, which should cope with the current and future challenges of DSO. The selection and effective implementation of each piece of Intelligent Energy Network technology requires a thorough analysis of the expected costs and achievable benefits. Only a relatively small part of the projects implemented in Poland is focused on new solutions in the LV network management. The UPGRID project is specifically focused on the LV network and construction of solutions by use of data owned by ENERGA-OPERATOR, including data from the AMI system. It is AMI that may constitute a very important source of information necessary for the effective LV network management. Through its participation in this international project, ENERGA-OPERATOR shares its knowledge with others DSO in Europe and at the same time benefits from their experience gained in the areas of the UPGRID demonstration projects.