SVC for SINCRO.GRID in Konjsko

02.07.2020

As in many parts of Europe, the increasing integration of decentralised, volatile renewable energy sources has also led in Croatia and Slovenia to a lack of flexibility and reactive power. The two TSCNET shareholders HOPS, the transmission system operator (TSO) from Croatia, and ELES, the Slovenian TSO, react to this with their joint project SINCRO.GRID that also involves two distribution system operators (DSOs) from the respective countries. The European Project of Common Interest (PCI) aims to optimise the efficiency of the two national electricity transmission networks through advanced technologies and innovative data processing methods. These include compensation devices, a dynamic thermal rating system, a battery power storage system, and a virtual cross-border control centre.

The start of construction of a static VAR compensator (SVC) in the Dalmatian substation in Konjsko on 30 June represents another significant milestone in the implementation of SINCRO.GRID. This state-of-the-art compensation system will support HOPS in actively controlling the reactive power flows in the Croatian power grid. The ceremony to mark the construction start was attended by high-ranking representatives of the Croatian government and the energy companies involved.

In addition to the SVC in Konjsko, SINCRO.GRID comprises three further main elements in Croatia: a variable shunt reactor (VSR) in the Mraclin substation near Zagreb, which was commissioned in January 2020, another VSR in the Melina substation, which is scheduled to be commissioned at the end of 2020, and finally a joint Croatian-Slovenian virtual control centre. Tomislav Plavšić, President of the HOPS Management Board, describes the latter as a unique solution for coordinated voltage regulation on the entire territory of both countries. The principal task of the binational virtual centre is to integrate three devices each in Croatia and Slovenia for reactive power compensation into one common operation to fully exploit their synergy potential.

HOPS has commenced construction of a SVC as part of the SINCRO.GRID project in Konjsko (picture with Tomislav Plavšić in the foreground: HOPS)

Linkup
> See HOPS press release, in Croatian (html)
> Visit SINCRO.GRID website (html)

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DA/RE project: Redispatch 2.0

09.04.2020

The grid security initiative DA/RE (“DAta exchange/Redispatch”) was launched in summer 2018 by TransnetBW, the transmission system operator (TSO) from the south-western German state of Baden-Württemberg, and entered the pilot phase on 1 April 2019. The first retrievals of redispatch capacities were carried out in summer 2019 and now the pilot phase of the Baden-Württemberg grid project has been successfully concluded. Apart from TSCNET shareholder TransnetBW, three distribution system operators (DSOs) and four other partners from the fields of virtual power plants, home storage, and energy trading were involved in the DA/RE pilot phase.

Like comparable projects, DA/RE responds to the increasing volatility and decentralisation of electricity generation. In order to stabilise the entire electricity system in the future, DA/RE intends to facilitate the transition from the current redispatch with centralised large-scale power plants to new processes involving the flexibility potential of smaller decentralised generation plants and storage facilities. In the pilot phase, the DA/RE partners have achieved their first project goal: Processes for the coordinated retrieval of redispatch power from the distribution grid over several voltage levels have been developed and successfully tested in practice. The entire process chain from the exchange of planning data via DA/RE internal processes with merit-order based plant selection up to the activation of the physical plant retrieval was tested in three steps. A total of 40 plants of different technologies with rated outputs between 3kW and 30MW were involved.

Key assumptions corroborated
In the pilot phase, the coordinated redispatch retrieval was verified across all voltage levels and the basic functionality of the DA/RE concept was confirmed. With the experience and findings gained from this, the final DA/RE platform is now being developed, for which uniform processes and interfaces to automate the process steps will be defined. This will ensure the scalability and mass suitability of the system and simplify the integration of smaller grid and plant operators.

The two DA/RE project managers, Florian Gutekunst from TransnetBW and Kilian Geschermann from the DSO Netze BW, describe DA/RE as an open project: “We are looking forward to involving further interested parties from the ranks of grid and plant operators as fellow campaigners. We are all facing growing challenges due to the transformation of the generation landscape; together we can find smart solutions and better meet the challenges.”

The pilot phase of the DA/RE project for smart decentralised redispatch solutions has successfully been concluded

Linkup
> See TransnetBW press release, in German (html)
> Visit DA/RE website, in German (html)

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Smart Grid of the future tested

07.04.2020

Small decentralised power generation plants, storage units and consumers must increasingly take on the role of stabilising the transmission system, a task that has so far been performed mainly by large, centralised power plants. The Dutch-German transmission system operator (TSO), TSCNET shareholder TenneT, is participating in two projects investigating the technical feasibility of decentralised stabilisation options. These two projects are C/sells with a focus on southern Germany and solar energy and enera with a focus on northern Germany and wind energy. Besides TenneT, C/sells and enera comprise various actors from the energy sector, research institutions and distribution system operators (DSOs). Both projects involve regional online platforms for the management of decentralised flexibilities and are funded by the German Federal Ministry for Economic Affairs and Energy in the framework of the innovation programme “Smart Energy Showcases” (“Schaufenster intelligente Energie” – SINTEG).

To connect suppliers and demanders of flexibility, C/sells has developed a flexibility platform called “comax”: Providers of flexibility report existing potential and grid operators can access this potential and coordinate with each other to retrieve their respective needs. In the enera project, a stock exchange-based local flexibility market is being developed that merges supply and demand for flexibility and allocates it to grid operators in a highly efficient manner. By linking the two online platforms of C/sells and enera, the smart grid of the future has now been field-tested and the targeted control of decentralised electricity consumers, storage facilities and generators has been trialled under real conditions throughout Germany for the first time.

During the test run, in coordination with the DSOs involved, the electricity demand of a storage facility in the northern windy state of Lower Saxony was increased at the request of TenneT to absorb electricity from renewable energy sources. At the same time, biogas and CHP (combined heat and power) plants in the south of Germany fed more electricity into the grid to meet the local demand. This has reduced the amount of electricity to be transmitted through the power grid and helped to eliminate bottlenecks.

Tim Meyerjürgens, COO at TenneT, comments on the successful test: “In the future, we will need millions of decentralised systems to stabilise the transmission grid. To this end, grid operators at all levels must collaborate and develop new tools to exploit the potential of CHP plants, heat pumps, biogas plants, battery storage, electric cars, power-to-gas plants and other decentralised facilities for greater grid security. Our test has shown how this works successfully.”

TenneT carried out a successful test on how to use decentralised consumers, storage facilities and generators to stabilise the grid (picture: screenshot taken from the C/sells website)

Linkup
> See TenneT press release, in German (html)
> Visit C/sells website (html)
>Visit enera website, in German (html)

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DA/RE project: first retrievals of redispatch capacities

11.07.2019

The Baden-Württemberg grid security initiative “DA/RE” (“DAta exchange/REdispatch”) addresses the increasing volatility and decentralisation of power generation. The aim is to stabilise the entire electricity system by utilising the flexibility potential of decentralised generation units from lower grid levels. Originally launched in the summer of 2018 by TSCNET shareholder TransnetBW, the German transmission system operator (TSO) from the state of Baden-Württemberg, and the southwest German distribution system operator (DSO) Netze BW, the project consortium was later expanded so that a total of three DSOs and four other partners from the areas of virtual power plants, home storage and energy trading were involved in the first DA/RE pilot phase from April to June 2019.

During this phase, the participants have defined and developed the method of data exchange and coordination. Following this successful implementation process, the first retrievals from pilot plants in the distribution network for redispatch purposes have now been initiated. Capacities were retrieved from battery home storage facilities, several biogas plants, a waste incineration plant and a cogeneration plant. The tests therefore involved both medium-voltage and low-voltage systems and the project partners have demonstrated that it is possible and important to make use of all flexibilities at all voltage levels for grid stabilisation.

“The retrievals from systems in the distribution network constitute a significant milestone for us, as they show that the concept is feasible and we are now able to gain initial experience in terms of practical suitability,” explains DA/RE project manager Florian Gutekunst from TransnetBW. The second stage of the pilot phase has thus begun. Further retrievals are now being carried out and various application cases are being tested. In concrete terms, the issue is how grid operators can trigger the retrieval of redispatch measures in a coordinated manner and how the information chain should be designed in order to guarantee all parties involved at all voltage levels complete transparency about the retrieval and the capacity provided. In the following third step, the retrievals are to be automated and the corresponding data paths implemented.

First retrievals of redispatch capacities have been carried out in the pilot phase of the DA/RE project (picture showing a scene from electricity trading: Next Kraftwerke)

Linkup
> See TransnetBW press release, in German (html)

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Connect+ for data exchange

14.06.2019

The four German transmission system operators (TSOs), the TSCNET shareholders 50Hertz, Amprion, TenneT, and TransnetBW, together with 16 distribution system operators (DSOs) have launched the “Connect+” project to jointly implement the legal requirements of the German Grid Expansion Acceleration Act (Netzausbaubeschleunigungsgesetz – NABEG). The project is a reaction to the increased need for coordination due to the current legislative amendments and intended to facilitate a more transparent exchange of data between grid operators and market participants.

German legislation has specified that, in future, all facilities for the generation or storage of electrical energy with a nominal capacity of 100kW or more must be utilised to prevent foreseeable bottlenecks in the grid. The modified conditions for redispatch apply from 1 October 2021. As the present feed-in management of the grid operators only reacts to acute congestions, an even more intensive cooperation between TSOs and DSOs is required in the future.

The new processes to be developed and introduced within the time frame pose a challenge for all grid operators. In the “Connect+” project, TSOs and DSOs want to develop uniform solutions for data distribution to harmonise data exchange between market participants and operators for congestion management. In a first step, essential specifications such as interfaces and formats are developed and defined.

The four German TSOs and 16 DSOs launch the data exchange project “Connect+” for congestion management

Linkup
> See Amprion press release, in German (html)
> See TenneT press release, in German (html)
> See TransnetBW press release, in German (html)

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AI for decentralised grid stabilisation

06.06.2019

In a sustainable energy future, small decentralised plants such as combined heat and power (CHP) plants, heat pumps or biogas units must assume the role of stabilising the transmission system, a task which is nowadays mainly performed by large, centralised power plants. To investigate the technical feasibility of decentralised stabilisation options, TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), the distribution system operator (DSO) Bayernwerk and Consolinno Energy GmbH have now jointly carried out a successful test in the southern part of the TenneT control area, the German federal state of Bavaria.

Since there is a vital public interest in such future-oriented technological solutions, the test was funded by the German Federal Ministry for Economic Affairs and Energy in the framework of the research project “C/Sells” which is part of the innovation programme “Smart Energy Showcases. Digital Agenda for the Energy Transition” (“Schaufenster intelligente Energie. Digitale Agenda für die Energiewende” – SINTEG). During the test, at the request of TenneT, the feed-in of a CHP plant controlled by Consolinno and connected to the low and medium-voltage grid of Bayernwerk was increased in order to provide the grid with the electricity required for stabilisation in the event of a bottleneck.

What is new is that each plant autonomously determines its flexibility potential through artificial intelligence (AI). The respective potential of the individual plants can then be further aggregated by means of swarm intelligence. The plants are in normal marketing and operation mode and report free flexibility quantities to the grid operators. “In Bavaria alone there are several thousand CHP plants, heat pumps and biogas facilities, nationwide there are many thousands more. They can increase the flexibility of the energy system and thus contribute to a safe and decentralised energy system in Bavaria and Germany. David can thus become Goliath,” comments Tim Meyerjürgens, COO at TenneT. Also in several other cooperative pilot projects, the TSO is exploring the potential of decentralised flexibility.

TenneT has carried out a successful test on the deployment of small decentralised plants for grid stabilisation

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> See TenneT press release, in German (html)

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DA/RE enters pilot phase

02.04.2019

Following its launch in June 2018, the Baden-Württemberg grid security initiative “DA/RE” (“DAta exchange/REdispatch”) has entered the pilot phase on 1 April. The DA/RE initiators are TSCNET shareholder TransnetBW, the German transmission system operator (TSO) from the state of Baden-Württemberg, and the southwest German distribution system operator (DSO) Netze BW with the support of the State Ministry of the Environment, Climate Protection and the Energy Sector. Meanwhile, several grid and facility operators are involved and actively participating in the pilot phase.

DA/RE responds to the increasing volatility and decentralisation of power generation. By utilising the flexibility potential of decentralised plants from lower grid levels, the entire electricity system is intended to be stabilised. Basically, DA/RE is an IT platform, through which grid operators can obtain information on flexibility potentials and coordinatedly retrieve them. In the trial phase, scheduled to last until the end of September 2019, two essential modules for data exchange and coordination between grid and facility operators are to be tested.

With its wide range of decentralised systems, DA/RE adequately represents the current market for flexibility. “Together we can thus test the processes with different DSOs up to medium voltage level and provide the further course of the project with valuable experience,” explains Florian Gutekunst, DA/RE project manager at TransnetBW.

The DA/RE initiative for grid security initiated by TransnetBW is entering the pilot phase

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> See TransnetBW press release, in German (html)

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TSO-DSO platform for congestion management

30.01.2019

Grid operators in the Netherlands and throughout Europe are working intensively on expanding grid capacity, which is urgently needed in the wake of energy transition and economic growth. However, this cannot be achieved in the short term, but the use of flexible electricity from the market can help to avoid anticipated grid congestions. GOPACS (“Grid Operators Platform for Congestion Solutions”) is the name of a new technological tool developed in the Netherlands for this purpose. It is the result of a unique, active collaboration between four Dutch distribution system operators (DSOs) and TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO).

GOPACS is not a market platform in its own right but uses orders on existing market platforms. And this is how it works: If congestion is foreseeable at some part of the grid, operators would like to see, for example, a reduction in production or an increase in consumption. Via GOPACS, an invitation to tender is sent to market participants concerned, who place an appropriate purchase order on a connected market platform. To avoid negative impacts on the balance of the national grid, the reduction of generation in the congestion area is combined with a contrary order from a market party outside this area. The price difference between the two orders is covered by the operators, the two orders are matched, and congestion is resolved.

The Dutch grid operators are currently looking for market players who want to participate and use their flexibility productively. Participation in GOPACS is interesting for any market party with the possibility to influence electricity consumption or generation and to provide this flexibility for trading.

Together with Dutch DSOs, TenneT has launched GOPACS, a smart platform for market players to solve grid congestions

Linkup
> See TenneT press release (html)
> Visit COPACS website (html)

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Smart TSO-DSO cooperation continues

24.10.2018

The energy transition entails many changes for the energy industry, such as the increasing generation of decentralised and volatile renewables, new actors on the market like aggregators, or the active role of customers ‒ all these developments require flexibility and pose a challenge for every player in the energy market, but above all for those responsible for a stable grid and a secure electricity supply: transmission system operators (TSOs) and distribution system operators (DSOs) sharing similar obligations and interests.

To cope with the demanding future tasks, network operators need a common vision of active system management to increase the flexibility of transmission and distribution and to coordinate them closely. This is why ENTSO-E entered into an intensive cooperation with four associations representing European DSOs a few years ago, namely the European Distribution System Operators (EDSO) for Smart Grids, CEDEC, Eurelectric, and GEODE. A significant first step was the publication of a report on TSO-DSO data management on 19 September 2016.

By signing an updated Memorandum of Understanding on 23 October 2018, the partners expressed their commitment to maintain and enhance their collaboration. The focus is on measures to realise synergies in research, development and innovation, e.g. the exchange of data and information, the introduction of new communication devices and software, and the coordinated renewal of ageing grids. In addition, the TSOs and DSOs are also working together to implement network codes more efficiently. Further fields of cooperative activities will be defined at the beginning of 2019, taking into account the European Commission’s final Clean Energy Package.

ENTSO-E has signed an updated Memorandum of Understanding on close cooperation with four associations representing European DSOs

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> See ENTSO-E press release (html)

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DA/RE initiative for grid security

18.06.2018

Today’s energy system is increasingly characterised by decentralised power production and volatile feed-in of electricity. This substantially affects the operation of the electricity grids and poses additional challenges for those who control them: the transmission system operators (TSOs) and the distribution system operators (DSOs). TSCNET shareholder TransnetBW, one of the four German TSOs, wants to explore innovative and cooperative approaches in order to make the grid and data flows smarter and thus ensure constant network security also in the new energy landscape.

Together with the southwest German DSO Netze BW, TransnetBW has launched an initiative that pursues two main targets: an efficient data exchange for grid security planning and coordinated redispatch performances on all grid levels. For this purpose, a digital platform is used that is accessible to all involved: TSOs, DSOs as well as plant operators. This open and integrated approach enables the use of plants and systems at distribution level for grid stabilisation measures at all levels. Via the platform, more facilities can be made available for redispatching which increases grid security.

The name of the new initiative derives directly from its purpose: DA/RE stands for “DAta exchange / REdispatch”, and at the same time it has to be understood literally: The DA/RE-partners are ready to take new and little trodden paths. Dr. Werner Götz, Chairman of the TransnetBW executive board, explains: “We no longer think of system security and system responsibility in the usual horizontal and exclusive TSO view, but across all network levels.” Preceded by a pilot phase from 2019, the initiators plan to implement the platform solution in 2021.

TSCNET shareholder TransnetBW, one of the four German TSOs, launches DA/RE initiative for grid security together with German DSO NetzeBW.

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> See TransnetBW press release, in German (html)

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