TSO conditions for reserve capacity approved

05.08.2019

The four German transmission system operators (TSOs), the TSCNET shareholders 50Hertz, Amprion, TransnetBW and Tennet, the Dutch-German TSO, ensure the supply of electricity under all circumstances and thus hold reserve capacities as ultima ratio for unforeseeable and exceptional extreme situations on the electricity market. The reserve capacity is calculated at 2GW and the facilities to provide the capacity are determined every two years by the TSOs through a tendering procedure.

Last week, the Bundesnetzagentur (German Federal Network Agency) approved the new standard conditions for the reserve capacity which had been drafted by the TSOs. The standard conditions are the basis of the contractual relationship between the respective TSO and the operator providing the capacity. They are designed to be as transparent as possible and include, among other things, rules on the availability and use of the reserve system, remuneration or contractual penalties.

Due to the standard conditions, the potential participants in the tender procedure know the terms under which the reserve facilities must be operated and the legal consequences in case of failure of a plant. Now that the conditions have been approved, the tender for the first performance period can start as planned on 1 September 2019.

The German Federal Network Agency approved the TSO standard conditions for reserve capacity (picture: Bundesnetzagentur)

Linkup
> See press release by the Bundesnetzagentur, in German (html)

See article on single page

Completion of repairs at Albula Pass

30.07.2019

In mid-April, TSCNET shareholder Swissgrid, the Swiss transmission system operator (TSO), began repairing the 380kV lines on the Albula Pass in the canton of Grisons, which had been damaged by the windstorm Adrian (Vaia in the German-speaking area), in the night of 29 to 30 October 2018. Since then, the two affected lines (Filisur-Robbia and Pradella-Robbia-Sils) were out of service, as Swissgrid decided for safety reasons not to erect a temporary connection in winter due to the danger of avalanches. The four damaged pylons and the conductors have now been replaced. On 29 July 2019, the lines were put back in operation as scheduled.

During the outage of the lines, grid security in the transmission system was always guaranteed and there were no supply interruptions. But the importance of the line as a north-south link made the repair particularly urgent. Thanks to partial snow clearance by the Civil Engineering Office of Grisons and a temporary avalanche protection system, Swissgrid was able to start work even before the official opening of the Albulapass road. Thus, Swissgrid was already able to start work on the four pylons on 15 April. The old foundations were removed, and new ones laid. The pylons were then built, and the conductors installed. The new pylons withstand even greater wind forces due to their stronger foundations and supporting structures. Two pylons now also have foundations with integrated avalanche protection.

Strict safety regulations were followed during the work. The high alpine terrain and the unpredictable weather of the snowy winter of 2018/19 presented the repair team with major challenges. The local avalanche commission issued an avalanche bulletin every day and activities were planned based on this information. The specialists on the construction sites were equipped with avalanche detectors and a container would have provided 48 hours of protection in an emergency. The work was accident-free. The Swiss TSO also developed and implemented a comprehensive environmental plan to protect the high alpine landscape. For example, the soil layers were removed and stored separately and returned to their original place after completion of the foundation work. The original state of the surroundings was then restored as far as possible.

Swissgrid has finished repair work on the damaged overhead lines at the Albula Pass (picture: Swissgrid)

Linkup
> See Swissgrid media release (html)
> Watch the Swissgrid video on the repairs (YouTube)

See article on single page

Fauna-friendly extension of Amprion substations

25.07.2019

TSCNET shareholder Amprion, one of the four German transmission system operators (TSOs), is expanding its Siegburg substation in North Rhine-Westphalia, near the former seat of the West German government in Bonn. The planning is progressing well: By 2023, the existing 220/110kV substation is to be integrated into the 380kV grid. To this end, the current installations will be extended by a 380/220kV transformer and a gas-insulated switchgear at the 380kV voltage level. A new overhead line will connect the station to Amprion’s supra-regional transmission system.

But there is more to be told from Siegburg, as the substation provides a home for seven bee colonies. In May, further TSCNET shareholder TenneT, the Dutch-German TSO, reported on a pilot project on eco-friendly substation maintenance, and now Amprion also informs about new steps in this field: Around 350,000 bees of the Buckfast and the Carniolan breeds live in a specially fenced area and bring the nectar gathered on their flights back to the hives at the station. “We are very happy about our new neighbours,” says Klaus Breitbach, operations manager of the substation. “We hope that our new neighbours will thank us for the good location with one or the other glass of honey”.

News is also coming from the Bischoffsheim substation in the Rhine-Main Area. Here, too, Amprion is working on the grid of the future: To ensure security of supply for the region and the state capitals of Mainz (Rhineland-Palatinate) and Wiesbaden (Hesse), the TSO is expanding and modernising the existing 380kv system with a transformer and switch panels. On 27 July, Amprion expects the delivery of the 350MVA transformer. First, the transformer with a weight of around 350 tonnes is being transported by rail. The last 560 meters on the road will be taken over by a heavy haulage tractor unit with a length of 78 meters and two times twelve axles. The total weight of the transport unit is 574 tonnes.

Bees at Amprion substation

Amprion welcomes bee colonies to the Siegburg substation and is expecting a new transformer at the Bischoffsheim substation (picture: Amprion)

Linkup
> See Amprion press release on the Siegburg substation, in German (html)
> See Amprion press release on the Bischofsheim substation, in German (html)

See article on single page

Regional Coordination Centre for South-East Europe

18.07.2019

The three transmission system operators (TSOs) of the South-East Europe Capacity Calculation Region (CCR) – TSCNET shareholder Transelectrica from Romania, ESO from Bulgaria and IPTO from Greece – have signed a memorandum of understanding (MoU) on establishing a Regional Coordination Centre (RCC). The memorandum emphasises the ambition of the TSOs to strengthen regional cooperation and thus contribute to the safety and efficiency of the European transmission system.

The agreement provides a cooperation framework between the three contracting parties with the common objective of finding a mutually acceptable solution for the implementation of an RCC on the principle of meeting the requirements of the Third European Energy Package and the Clean Energy for all Europeans Package as efficiently, effectively and timely as possible. The MoU sets a time frame for the core decisions. The SEE capacity calculator is to be determined as early as 4 August 2019 and the necessary documents for the founding of the RCC are to be signed by the end of the year.

The three TSOs of the South-East Europe CCR have signed a MoU on establishing an RCC (picture of the “New Europe Bridge” connecting Romania and Bulgaria across the Danube by Erich Westendarp, Pixabay).

Linkup
> See ENTSO-E press release (html)

See article on single page

Investing for the energy future

27.06.2019

TSCNET shareholder Amprion, one of the four German transmission system operators (TSOs), presents its Annual Report 2018 on a specially designed website. What, from a TSO’s perspective, is most necessary for the successful energy transition in Germany – the sustainable expansion of the transmission system so that green electricity can be provided nationwide – is clearly reflected in Amprion’s figures for 2018: Amprion further increased its investments in grid extension, which amounted to €763m in 2018 and were 8.5% higher than in the previous year.

However, it is not sufficient for TSOs alone to fulfil their role, especially as grid extension needs to be accelerated significantly to keep pace with the expansion of the renewables. Politics must also help by setting the right course to promote the cross-sector transformation of the energy system. Amprion therefore calls for a national master plan for electricity and gas. Dr. Klaus Kleinekorte, CTO at Amprion, explains: “It is not enough just to connect renewable energies to the grid. From our system responsibility, we have the task of integrating them into the energy system.” This requires innovative concepts and technologies such as power-to-gas.

Dr. Hans-Jürgen Brick, Chief Commercial Officer and CFO of Amprion, adds at the company’s annual press conference in the German capital of Berlin, that the expansion of the electricity system as outlined in the German Network Development Plan remains the indispensable basis for achieving the climate targets and the secure and cost-effective power supply of the German conurbations. “Amprion is thus investing more than €9.3bn in its grid over the next ten years.”

Amprion presents Annual Report 2018 (picture: Amprion)

Linkup
> See Amprion press release, in German (html)
> Visit Annual Report 2018 site, in German (html, with download options)

See article on single page

Romanian legislation promotes energy infrastructure

21.06.2019

In Romania, a new law adopted by President Klaus Iohannis on 20 June facilitates nationally important extensions to the transmission system infrastructure. The act promotes the implementation of important investment projects for Romania’s energy security, the construction of overhead lines and compliance with time limits for projects with European financing.

The Romanian transmission system operator (TSO) and TSCNET shareholder Transelectrica expressly welcomes the new legislation. Marius Dănuţ Carașol, chairman of the Transelectrica Directorate, highlights the positive effects on the TSO’s expansion efforts, for example by reducing bureaucratic obstacles.

New Romanian legislation facilitates grid extension (picture showing the Parliament building in Romania’s capital Bucharest: Mari Ana / Pixabay)

Linkup
> See Transelectrica press release, in Romanian (html)

See article on single page

ČEPS innovation projects

12.06.2019

As European transmission system operators (TSOs), the TSCNET shareholders must adapt to the changing energy landscape and find solutions for a successful sustainable energy future. The Czech TSO ČEPS is no exception to this rule and is actively involved in several innovation projects to respond to changes in the energy industry and to ensure the reliable operation of the Czech power system, as it was now pointed out by Karel Vinkler, director of the Innovation and R&D section of ČEPS. These projects include SecureFlex, MAFRI, Dflex, and BAART, which all are part of the national THÉTA program of the Technology Agency of the Czech Republic to support research in the energy sector.

With the SecureFlex project, ČEPS recognises power flexibility as one of the most important grid stabilisation tools of the future. SecureFlex focuses on developing analysis, calculation and optimisation tools as well as targeted studies that contribute to the secure use of power flexibility in the context of new technologies and market themes. The MAFRI project (Mid-term Adequacy Forecast – Regional Indicators) aims to identify new reliability criteria for the production-capacity-adequacy evaluation. The outcomes of the project can contribute to future decisions on infrastructure investments and restorations.

In the Dflex project, the feasibility of active participation of smaller power sources will be investigated to provide flexibility for the operation and control of the power system. Through aggregation and active decentralised control systems, these energy sources will then be used to stabilise the system. Finally, the BAART project is concerned with the gradual development of the BSAE technology (Battery System Accumulation of Energy) and its potential regarding power balancing. The main purpose of this project, in which a 4 MW battery in the Tušimice power plant is being used, is the development, adaptation and modification of BSAE power balance services and their practical verification.

“ČEPS has been active in the field of innovation, research and development for a long time. The need to innovate comes naturally from the fundamental changes of the present power industry environment,” comments Vinkler.

ČEPS is conducting several innovation projects to respond to changes in the energy industry (picture shows the Czech capital Prague, where the TSO has its headquarters)

Linkup
> See ČEPS press release (html)

See article on single page

Amprion presents CWE market report

03.06.2019

Amprion, one of the four German transmission system operators (TSOs), has published its market report for the period 2015 to 2018. In this comprehensive document, the TSCNET shareholder investigates the development of the electricity market in the Central Western Europe (CWE) region using data from Flow-Based Market Coupling (FBMC). The CWE countries (Austria, Belgium, France, Germany, Luxembourg, and the Netherlands) implemented FBMC in May 2015, which allows TSOs to allocate cross-border capacity and maximise market efficiency without compromising grid stability. This is due to the inclusion of the entire regional network in the coupling of electricity markets.

The control area of Amprion is a central hub for cross-border electricity trading in the CWE region. With its transmission capacities, the TSO can export up to eight GW of electricity at peak times and thus generate more than half of Germany’s total export performance. Transmission via the Amprion grid thus also supports security of supply in neighbouring countries, especially in critical situations such as winter 2016/2017.

Amprion’s analysis shows that the integration of the CWE markets is already well advanced and continues to progress. At the same time, the growing difference between positive and negative price peaks on the electricity exchanges also highlights the challenge of the highly volatile supply of renewable energies. Dr. Hans-Jürgen Brick, Chief Commercial Officer and CFO of Amprion, comments: “The mutual dependency in Europe on system security will continue to rise. We are therefore doing everything physically possible to connect the national markets and networks even better.”

Amprion has published a comprehensive market report for the CWE region

Linkup
> See Amprion press release (html)
> Open Amprion market report (pdf, 3,43MB)

See article on single page

ENTSO-E report on frequency drop

29.05.2019

On Thursday, 10 January 2019, shortly after 9 p.m., a deviation from the 50Hz mid-frequency was registered in the Continental European (CE) power system, which comprises the synchronised transmission grids of 26 countries. The deviation lasted 9 seconds and, with a drop to 49.808Hz, was the largest absolute frequency deviation since the so-called “European Blackout 2006”, when the frequency reached 49.0Hz.

Thanks to immediate collective action by the transmission system operators (TSOs) of the CE Regional Group the underfrequency was quickly rectified and the European security of supply was not compromised at any moment. In concrete terms, the activation of CE reserves and of interruptible contracts with French industrial customers returned the situation to normal. To identify the root causes of the incident, the European Network of Transmission System Operators for Electricity (ENTSO-E) undertook in-depth investigations and has now released a detailed and transparent technical analysis.

According to this report, the large drop was caused by the superposition of two factors. A significant deterministic frequency deviation (DFD) during the evening peak load encountered another, unpredicted one, registered between 9 and 11 January and caused by a technical error resulting from a frozen measurement on four connecting lines between Austria and Germany. The cumulative effect of the permanent frequency deviation from 9 to 11 January and the significant evening DFD on 10 January led to the frequency loss in the interconnected CE system.

The ENTSO-E technical report indicates that solutions for DFDs in the CE region need to be found. DFDs have been observed for years, but are now becoming more common and are of greater amplitude due to imbalances between generation and demand. Possible solutions to DFDs may require a change in operating and/or market rules. ENTSO-E will make further enquiries in close dialogue with all interested parties.

ENTSO-E has released an in-depth report on the frequency drop in the CE power system from January 2019 (illustration: ENTSO-E)

Linkup
> See ENTSO-E press release (html)
> Open ENTSO-E report (pdf, 2.65Mb)

See article on single page

Pylon repair started at Albula Pass

25.05.2019

The windstorm Adrian (Vaia in the German-speaking area) was one of the most devastating storms of the European storm season 2018-19, mainly affecting the northern Mediterranean and Alpine regions. It not only damaged the Venetian Basilica of San Marco and flooded 75% of Venice, but also destroyed transmission lines at the Albula Pass: In the night to 30 October 2018, four pylons from TSCNET shareholder Swissgrid, the Swiss transmission system operator (TSO) bent or collapsed at the high mountain pass in the Canton of Grisons.

Since then, the two affected 380kV lines (Filisur-Robbia and Pradella-Robbia-Sils) have been out of operation, as Swissgrid has decided for safety reasons not to erect a provisional connection with emergency masts in winter due to the danger of avalanches. Nevertheless, grid security in the transmission grid is ensured at all times and there have been no supply interruptions. While security and supply are guaranteed, however, transit capacity to Italy had to be reduced until the line is restored.

Swissgrid began repairing the 380kV lines in mid-April and is now replacing the four broken pylons whose foundations are currently being reconstructed. New pylons and the conductor ropes will then be installed. If everything goes according to plan, the two lines will go operational again at the end of July.

Swissgrid has commenced repair work on the damaged overhead lines at the Albula Pass (picture: Swissgrid)

Linkup
> See Swissgrid media release (html)

See article on single page