Variable shunt reactor for SINCRO.GRID

03.12.2019

The two transmission system operators (TSOs) and TSCNET shareholders ELES from Slovenia and HOPS from Croatia are cooperating in SINCRO.GRID. This cross-border smart grid initiative is coordinated by ELES and comprises in addition to the TSOs also two distribution system operators (DSOs) from both countries. The objective of the European Project of Common Interest (PCI) is to optimise the efficiency of the respective national transmission systems by means of advanced technologies and innovative data processing methods.

Since the substantial allocation of EU funding to SINCRO.GRID under the Connecting Europe Facility (CEF) programme in 2017, the project has made significant progress. A vital component of SINCRO.GRID is optimising and installing compensation devices for reactive power control, e.g. variable shunt reactors, which are used in high-voltage transmission systems for voltage stabilisation during load variations. Now the ELES substation in Divača in south-eastern Slovenia has been equipped with such a technically advanced device manufactured by Siemens in Austria. The assembly work is in full swing and is expected to be completed by 12 December. Preparatory work for commissioning will then commence immediately.

Another major component of SINCRO.GRID is a dynamic thermal rating system for power grid operating limits. The aim is to evaluate marginal capacities of transmission system components considering weather influences and thus to improve operational safety and utilisation of overhead lines and transformers. In addition to hard- and software in control centres, atmospheric measuring devices, which are installed directly at the pylons, are also part of the system. Corresponding tests of innovative weather stations are underway. Last week, the substructure for the weather station on the Kleče-Divača overhead line was field tested.

SINCRO.GRID advances technical innovations (picture: ELES)

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> Visit SINCRO.GRID website (html)

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NEDO Project meetings in Tokyo

24.04.2019

A three-year Slovenian-Japanese smart grid project was launched in November 2016. The main partners are the Japanese New Energy and Industrial Technology Development Organisation (NEDO), its authorised contractor Hitachi, the multinational conglomerate, and TSCNET shareholder ELES, the Slovenian transmission system operator (TSO). In addition to ELES, numerous Slovenian stakeholders also contribute to the NEDO Project, the aim of which is to implement a smart grid at national level. For the power system, the benefits lie in innovative solutions that reduce the need for grid extension, as the use of advanced secondary equipment, information, communication and cloud technologies allows better utilisation of the existing grid.

Last week, two NEDO Project meetings took place in the Japanese capital Tokyo. On 17 April, Gorazd Ažman, Assistant Director of the Strategic Innovation Department at ELES, and a representative of Hitachi informed the members of the NEDO Project Steering Committee and the Advisory Board about the current project activities in the Hitachi premises. The next day, a second meeting followed, this time at the NEDO headquarters with high representatives of the Japanese Ministry of Infrastructure, the Ministry of Economic Development and Technology, ELES, NEDO and Hitachi.

ELES and Hitachi held two NEDO Project Meetings in Tokyo (collage using a picture of Eles and a picture of Hitachi Headquarters in Chiyoda, Tokyo, by Kakidai, Creative Commons, Wikimedia)

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News from PCI Energy Days

20.03.2019

The PCI Energy Days, organised by the European Commission (EC), offer promoters of European Projects of Common Interest (PCIs) the opportunity to present their projects and exchange experiences on how to build a future-proof and environmentally friendly energy infrastructure with innovative concepts. The inaugural PCI Energy Days took place on 19 and 20 March 2019 in the Belgian capital of Brussels and featured a policy conference as well as an exhibition on the practical implementation of specific PCIs. Among the attendees were the European Network of Transmission System Operators for Electricity (ENTSOE), the three transmission system operators (TSO) and TSCNET shareholders ELES from Slovenia, HOPS from Croatia and the Dutch-German company TenneT.

ELES took the opportunity to present in cooperation with HOPS the Croatian-Slovenian smart grid project SINCRO.GRID. Coordinated by ELES, SINCRO.GRID comprises in addition to the TSOs also two distribution system operators (DSOs) from both countries. The aim of the cross-border project is to optimise the efficiency of the respective national power transmission systems using advanced technologies and innovative data processing methods.

The Renewables Grid Initiative (RGI), an association of non-governmental organisations (NGOs) and TSOs from all over Europe, was also present at the PCI Energy Days to celebrate the signing of the Marine Grid Declaration. The Declaration sets out principles for grid development in the marine environment, such as promoting early mutual communication with stakeholders, adequate protection of the marine environment and knowledge sharing. The RGI members, which include the TSCNET shareholders 50Hertz, Amprion, HOPS, Swissgrid and TenneT, recognise the cooperation between TSO and NGOs as a highly promising approach to building a sustainable marine grid infrastructure. The signatories to the Declaration commit themselves to developing marine projects in accordance with nature conservation principles and early stakeholder involvement. The Marine Grid Declaration builds on the principles previously agreed in RGI’s European Grid Declaration. If you are interested, you can still sign both declarations. In this case, please contact the RGI.

From 19 to 20 March, the inaugural EC PCI Energy Days were held in Brussels, Belgium (picture: RGI)

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> See ELES press release (html)
> See RGI press release (html)
> Open Marine Grid Declaration (pdf, 926,8kB)

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First capacity offers on WindNODE platform

17.03.2019

Today’s energy market, with its ever-increasing share of volatile quantities of electricity from renewable sources, demands optimum capacity utilisation and systematic use of flexibility – already now and even more so in the future. To be well prepared for the challenges ahead, more than 70 partners from all over eastern Germany are working on the WindNODE project, including TSCNET shareholder 50Hertz, the German transmission system operator (TSO) responsible for the region. A core component of WindNODE is the flexibility platform, through which regional producers, consumers, and storage operators offer TSOs and distribution system operators (DSOs) flexible use of their facilities. This is intended to reduce the throttling of wind turbines in the event of grid bottlenecks.

The WindNODE flexibility platform has been in trial operation since November 2018. On 14 March 2019, capacities were offered and called up for the first time. “This means that the trial operation is now entering the practical phase and we can demonstrate that the integration of numerous producers, storage facilities and consumers in one market environment leads to less throttling of renewables – especially now in a very windy season,” explains Georg Meyer-Braune, project manager WindNODE at 50Hertz. The test phase of the platform will last until summer 2019 and processes will be gradually established at further partners, who will thus become potential suppliers. The platform will then be in continuous operation until the end of the project term in 2020. The aim is to use the dedicated facilities for congestion management also after the completion of the WindNODE project.

The first capacities have been offered and called up on the WindNODE flexibility platform (illustration using a screenshot taken from video “Die WindNODE-Flexibilitätsplattform erklärt”, 50Hertz – YouTube)

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> See 50Hertz press release, in German (html)

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Successful tests for the HeatFlex project

15.01.2019

Volatile and decentralised energy generation is an essential characteristic of the energy future. What is at first an evident risk to grid stability, could also prove to be an opportunity for smart and flexible grid management, since small and decentralised consumption devices, if actively involved, could even help to stabilise the grid. In order to explore this potential, TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), and the southern German distribution system operator (DSO) Bayernwerk Netz GmbH have launched HeatFlex last summer, a research project to increase the flexibility and stability of the entire transmission system.

TenneT and Bayernwerk jointly investigate how decentralised devices can be involved most effectively. The power users that HeatFlex is concerned with are, for example, electric storage heaters, heat pumps, water heaters and potentially also electric vehicles in the Bayernwerk area. They can be controlled by the DSO using ripple control. If a bottleneck in the transmission grid is to be expected, for instance due to a lot of wind power, decentralised consumption devices are used for grid control: At TenneT’s request, they will be triggered by Bayernwerk and then cease consuming too much electricity but instead supply the grid with the necessary electricity for stabilisation.

There are over 170,000 decentralised controllable devices with a total capacity of around 200MW in the Bayernwerk distribution area. A first test in summer already proved the technical feasibility of HeatFlex in cases of real bottleneck situations. It turned out that the communication between the control centres of both operators worked quickly and efficiently. “With this project, we are testing solutions for tomorrow already today. HeatFlex is one of the pilot projects with which we are investigating which decentralised flexibilities we can use in the future to stabilise the grid. These include, for example, projects with power-to-gas, with bidirectionally chargeable electric vehicles or with home storage and blockchain technology,” explains TenneT Managing Director Wilfried Breuer.

HeatFlex, the joint research project of TenneT and Bayernwerk on flexible grid control, is making progress (picture: Bayernwerk AG)

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InnoGrid 2019 on cyber-physical grids

19.12.2018

A few days before Christmas, the European Network of Transmission System Operators for Electricity (ENTSO-E) pointed out one of the most important dates in the coming year for innovative network concepts: InnoGrid 2019, which will take place on 13 and 14 May in Brussels, Belgium.

In recent editions, InnoGrid has proven to be the key European event for electricity grid innovation and there is no reason why it should be any different this time. The prestigious annual event is organised jointly by ENTSO-E and the European Distribution System Operators for Smart Grids (EDSO). The motto of InnoGrid 2019 is: “Connecting Physics and Digits: Power Platforms on the Rise”. What’s the whole issue? It is about physical networks and their permeation with information and communication technologies, transforming the energy system into a cyber-physical system.

How can it be ensured that digitisation will reach its full potential? And what is the best possible interaction between transmission system operators (TSOs) and distribution system operators (DSOs)? CEOs of the industry will answer these and other questions and present their respective innovation strategies. At InnoGrid 2019 you will get acquainted with today’s emerging power platforms and have the opportunity to discuss the necessary regulatory, political and financial framework conditions. Sponsoring opportunities for InnoGrid 2019 are already available and the calls for applications will be sent out shortly.

ENTSO-E and EDSO are hosting the 8th annual InnoGrid conference on innovation in electricity networks from 13-14 May in Brussels

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IE2S for smart system consulting

23.11.2018

Whole new challenges for the participants in the energy market arise in the context of intelligent networks, intelligent markets and intelligent products as well as their cross-sector and digital networking in a “Smart System”. TransnetBW, TSCNET shareholder and one of the four German transmission system operators (TSOs), strives to provide targeted advice to those of its customers, whose business models have undergone massive changes as a result of the transition in energy and mobility.

This is why the TSO from the German state of Baden-Württemberg has teamed up with the global consultancy MHP, a Porsche company which specialises in IT and process consulting in the automotive and manufacturing sectors. Under the brand “Intelligent Energy System Services (IE2S)”, TransnetBW and MHP are bundling their core and specialist competencies to develop customised consulting solutions for the energy and mobility market players. While the TSO incorporates the energy industry specific and process-related knowledge as well as the system view into the cooperation, MHP as digitisation and mobility expert has the experience and consulting competence of almost three thousand employees.

With this collaboration, TransnetBW is taking a first step towards strengthening its service business outside the regulatory sector and is also considering industries that have not yet participated in the electricity market but can contribute to grid stabilisation through smart load management at industrial and commercial locations or through the use of storage facilities in electric vehicles. “The energy industry and the automotive industry are moving closer together. There are many new topics that affect both sectors equally. It is therefore a logical consequence to work even more closely together,” explains Dr. Rainer Pflaum, Member of the TransnetBW Executive Board. The competent project manager at TransnetBW, Dr. Dominique Gross, adds: “With IE2S, we want to pursue a new path and bring our expertise in system responsibility and supply security into the context of increasingly digital, decentralised business models.”

TransnetBW cooperates with the IT and process consulting firm MHP in the IE2S project for smart system consulting (picture: screenshot taken from MHP image film, YouTube)

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WindNODE flexibility platform in trial operation

21.11.2018

The energy transition results in a rapidly growing share of volatile electricity volumes from renewable energy generation. The participants in the energy market are thus faced with new and challenging tasks that go beyond the mere safe operation of electricity grids. Optimum capacity utilisation and maximum use of renewable, weather-dependent energy instead of the throttling of sustainable plants are key requirements of today’s market. The TSCNET shareholder 50Hertz, one of the four German transmission system operators (TSOs), meets the new challenges through the systematic use of flexibility.

A single example from 2017 shows the extent of today’s throttling measures: 641GWh of renewable power generation were throttled in the 50Hertz control area for grid stability reasons. In order to use otherwise lost energy, more than 70 partners from all over East Germany are working on the WindNODE project promoted by the German Federal Ministry for Economic Affairs and Energy. A central component of the project is the flexibility platform, a digital procurement system that is designed to reduce the throttling of wind turbines in the event of grid bottlenecks. Via the platform, regional generators, consumers and storage operators offer TSOs and distribution system operators (DSOs) flexible use of their facilities. TSOs and DSOs cooperate closely in the project.

The flexibility platform has now gone into test operation after almost two years of developing. The intention is to balance the load distribution of volatile generation quantities and to integrate them optimally into the system. By connecting or disconnecting flexible loads – for example industrial production facilities – the power consumption at appropriate grid nodes is regulated in such a way that bottlenecks and thus the throttling of wind energy are prevented and maximum use of green electricity is facilitated.

Dr. Dirk Biermann, Chief Markets & System Operations Officer at 50Hertz, emphasises the importance of both, more efficient use of the existing grid and grid extension, to achieve the German government’s renewable share targets. “We need to get into Power-to-X applications and the systematic use of flexibility. This is why the WindNODE platform comes at the right time and can help to effectively use regeneratively generated ‘excess electricity’ instead of throttling it.”

The WindNODE flexibility platform for effective use of renewable energy and congestion management in east Germany has been put into trial operation

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SINCRO.GRID contract for process technical systems

16.10.2018

The Croatian-Slovenian smartgrid project SINCRO.GRID is carried out by the two TSCNET shareholders ELES, the transmission system operator (TSO) from Slovenia, and HOPS from Croatia. The cross-border initiative aims at optimising the efficiency of the Croatian and Slovenian electricity transmission grids through the application of advanced technologies and innovative data processing methods. SINCRO.GRID has been awarded the status of Project of Common Interest (PCI) by the European Commission under the Connecting Europe Facility (CEF) programme.

On behalf of SINCRO.GID, HOPS has signed a contract with KONČAR-KET, the Croatian provider of engineering services for power generation, transmission or distribution facilities. The contract comes with the rather unwieldy title: “Process technical systems for the voltage and reactive power regulation support of the EES and dynamic monitoring of the transmission line load within the SINCRO.GRID project”, but what it’s all about is to increase the quality and capacity of the power system through the use of advanced process technical systems and algorithms. This will also promote the integration of the renewables and increase the security of customer supply.

HOPS has signed a contract for the use of process technical systems on behalf of SINCRO.GRID (picture: HOPS; on the left: Mario Gudelj, Chairman of the Board at HOPS, on the right: Goran Leci, Managing Director of KONČAR-KET)

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> See HOPS press release, in Croatian (html)
> See news release on SINCRO.GRID website (html)

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Wind data for smart grid control

25.09.2018

The volatility associated with the generation of renewable energy is a well-known side effect of the energy transition, which has not made it any easier for transmission system operators (TSOs) to constantly maintain grid stability and supply security. The adaptation of the transmission grid to the requirements of the new energy landscape is progressing more slowly than the expansion of renewable energies themselves and grid overloads are therefore a common consequence. In such cases, renewable power generation must be throttled, resulting in the loss of valuable (and green) energy capacities.

In order to avoid this and also to reduce costly interventions, TSCNET shareholder TenneT, the Dutch-German TSO, and Statkraft, Europe’s largest generator of renewable energy, are investigating in a joint pilot project how the grid can be better and smarter controlled. Specifically, the two partners want to find out how TenneT can progressively exploit the feed-in forecasts of Statkraft’s northern German wind farms for intelligent grid control. The data obtained improves the calculation of grid utilisation and thus enables the TSO to identify and eliminate possible congestions at an early stage. In a second step, the direct control of wind turbines by TenneT will be tested in order to relieve grid bottlenecks.

“Every day we eliminate bottlenecks in the power grid with hundreds of interventions in conventional and renewable generation. To ensure that we only intervene as much as necessary, it is important for us to have direct access to wind turbines so that we can control them in bottleneck situations,” explains Lex Hartman, executive board member at TenneT. The smart grid initiative of TenneT and Statkraft is part of the consortium project “NEW 4.0 ‒ Norddeutsche EnergieWende” (“Northern German Energy Transition”) funded by the German Federal Ministry for Economic affairs and Energy as part of the promotion programme “Schaufenster intelligente Energie ‒ Digitale Energiewende” (“Showcase Intelligent Energy – Digital Energy Transition”).

TenneT cooperates with the energy group Statkraft on a pilot project for smart grid control utilising wind data

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