Windstorm results in damage and record feeds

11.02.2020

From Sunday evening through Tuesday morning, the windstorm Ciara (Sabine in German speaking countries and Elsa in Scandinavia) brought severe damaging winds along the squall line across Benelux, France, and Germany and also seriously affected large parts of Central Europe such as the Alpine countries of Austria and Switzerland as well as Poland, the Czech Republic and Slovakia. In Switzerland, Sabine caused several damages to the extra-high voltage grid on Monday, 10 February.

A total of six transmission lines were affected by the storm. Fortunately, TSCNET shareholder Swissgrid, the Swiss transmission system operator (TSO), can report that security of supply in Switzerland has never been at risk and that no people were injured as a result of the damage to the Swissgrid transmission system. Following the tear of a conductor cable of the 220kV line Göschenen-Plattischachen, canton of Uri, the substations Plattischachen and Göschenen had to be temporarily disconnected from the extra-high voltage grid. In western Switzerland, the 220kV line across the Great St. Bernard, canton of Valais, towards the border with Italy was interrupted. The line is in rough terrain and as soon as weather conditions and the security conditions permit, it will be checked by helicopter and examined for possible damage. In total, four of the damaged lines have meanwhile been repaired.

Although there may not have been comparable damage elsewhere and impairments occurred primarily at distribution system level, the storm was generally a major challenge for the affected TSOs, since it gave a powerful boost to electricity generation from wind power. However, the power input was not consistent and wind turbines were shut down when gusts were too strong. At its peak, around 43.7GW of wind power was fed into the grid in Germany, as the Fraunhofer ISE energy charts show, exceeding the previous record of around 43.4GW. According to calculations by the Agora Energiewende think tank, more than three quarters of the electricity consumed in Germany between Sunday noon and Monday noon came from renewable energies.

The International Economic Forum for Renewable Energies (Internationales Wirtschaftsforum Regenerative Energien – IWR) registered a Europe-wide record feed on Sunday evening, when more than 105GW of energy output from wind were recorded in the European power grid. This highest European measurement in 2020 was even surpassed on Monday morning with the all-time record of 109GW.

From Sunday to Tuesday morning, a powerful winter storm caused several damages in the grid of Swissgrid and led to record feed-in of wind energy in Europe

Linkup
> See Swissgrid media release, in German (html)
> Visit Energy Charts Website (html)
> Visit IWR Wind Metering Portal, in German (html)

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Swissgrid adjusts export capacities to Germany

03.09.2019

All participants in the integrated European electricity market have agreed on common definitions of the transmission capacity for international electricity exchanges, including the Net Transfer Capacity (NTC). The NTC is an important basis to anticipate and plan cross-border transactions. Thus, the establishment of NTCs is one of the essential tasks of the transmission system operators (TSOs) to enable market participants to carry out energy trading without jeopardising grid stability. TSCNET shareholder Swissgrid, the Swiss TSO, along with the neighbouring TSOs, determines the NTC values on all four Swiss borders on an annual, monthly and daily basis.

In the summer of 2019, Swissgrid had to reduce the NTC on the national northern border to Germany to ensure reliable grid operation. Originally, a static NTC value of 4,000 MW for exports from Switzerland to Germany had been defined with the neighbouring German TSOs. However, the load flows between the two countries have changed in the last two years. Situations in which Germany is dependent on imports, especially from Switzerland, occurred increasingly in the summer months. As a result, the previously typical north-south flow towards Italy reversed to a south-north flow towards Germany.

Other simultaneous factors also affected the Swiss grid load, such as the high level of Swiss hydropower production, the inspection times of the Swiss nuclear power plants and the seasonal decommissioning and construction work on the grid. In combination with the growth in exports to Germany, this led to significantly higher load flows in the Swiss 220kV grid, which were additionally reinforced by increased export opportunities from France to Germany through Flow-Based Market Coupling (FMBC) in the Central Western Europe (CWE) region and transit through Switzerland.

In fact, exports of up to 8,000MW were recorded on several days this summer. For this reason, Swissgrid, together with its neighbouring TSOs, has limited the NTC values for a secure grid operation. Swissgrid continues to cooperate closely with these TSOs to optimise cross-border capacity. The current static value of 4,000MW is expected to be substituted by seasonally adjusted dynamic NTC values. However, due to the implementation of the “Clean Energy for All Europeans Package” (CEP) of the European Commission, it is not yet possible to predict exactly how the NTC values at Switzerland’s northern border will develop.

Swissgrid adjusts the NTC values for electricity flows at the Swiss-German border

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> See Swissgrid news release (html)

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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)

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

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Consultation on risk preparedness regulation

09.07.2019

The European Parliament adopted the “Clean Energy for All Europeans Package” (CEP) on 26 March 2019, which was then formally approved by the relevant EU ministers. On 4 July, the CEP finally came into force, introducing new laws on EU electricity trading, including the “Regulation 2019/941 on risk-preparedness in the electricity sector”. This Regulation requires the European Network of Transmission System Operators for Electricity (ENTSO-E) to develop the methodology to identify regional scenarios for electricity crises within six months of its implementation.

ENTSO-E has now prepared proposals for the “Methodology for identification of electricity crisis scenarios at a regional level” and the “Methodology for short term and seasonal adequacy assessment”. In order to receive input from stakeholders, ENTSO-E has launched a public consultation on these methodology propositions. The consultation is open until 8 October 2019 and ENTSO-E will also host a webinar on the risk preparedness methodologies on 5 September from 10 a.m. to 12 noon.

ENTSO-E opens consultation on EU Risk Preparedness Regulation

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> See ENTSO-E press release (html)
> Direct access to ENTSO-E consultation (html)
> Open webinar registration site (html)
> See EU Regulation at EUR-Lex (html)

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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

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

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Swissgrid analyses critical situation

27.05.2019

On the critical situation in the Swiss transmission grid on Monday, 20 May 2019, when individual grid elements were considerably overloaded or threatened to be overloaded, TSCNET shareholder Swissgrid, the Swiss transmission grid operator (TSO), has already completed an initial analysis. On that day, with a high Swiss domestic electricity production of around 12 GW, a total of around 4.5 GW was exported, most of it to Germany. Since the load flows typically run in the opposite direction, this atypical situation led to security breaches in the grid.

For reasons unknown, the European grid forecasts did not anticipate that export volumes would increase in the short term from Sunday to Monday. Swissgrid had thus to resolve the grid security breaches in real-time operation in cooperation with colleagues from the European TSOs. This incident shows that the forecasts can deviate considerably from the actual load flows. It also indicates the crucial importance of integrating all transmission grids in Europe, including Switzerland, into the grid modelling, so that any threats to grid security can be identified in advance and coordinated measures can be taken.

However, since Switzerland is excluded from market coupling due to the lack of an electricity agreement with the EU, the deviations between forecasts and effective load flows are likely to increase. An agreement, on the other hand, would include Swissgrid in the models for load flow calculation and capacity allocation of the European partners and provide the TSO with better information on the load flows through Switzerland.

Swissgrid presents first analysis of the grid security breach from 20 May (picture: Swissgrid)

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> See Swissgrid news release, in German (html)

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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)

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> See Swissgrid media release (html)

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APG automates emergency messages

20.02.2019

“In emergencies involving high voltages, quick help from proper specialists is needed,” explains Stevica Rakic, Project Manager at TSCNET shareholder APG, the Austrian transmission system operator (TSO). As the emergency services need accurate information, all 12,000 pylons in the APG control area have been equipped with an individual QR code since summer 2018. A corresponding specially developed smartphone application enables a reliable and quick notification of the right personnel in an emergency.

The QR codes are located on the pylon number plates and can be read with a scanner or simply with the camera from iOS or Android smartphones. If a random passer-by notices a potentially critical incident, he can press “Emergency Message” after scanning the code and the information process begins with automatically forwarding the message containing the relevant information to APG, the police, ambulance services, and the fire department. Besides, the person reporting is connected directly to the APG Security Center by phone.

If professional personnel use the function, APG’s digital security platform opens immediately. Of course, one cannot always rely on the availability of modern technology. Internet connections can be interrupted or there might be no smartphone available. Therefore, the familiar pylon and line numbers, as well as the emergency telephone number, remain on the plates so that an emergency message can still be sent without a smartphone or internet connection.

APG has equipped each of its pylons with an individual QR code for the automatic forwarding of emergency messages (picture: APG/APA/Schedl)

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> See APG press release, in German (html)

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“RiffReporter” story: The more precise the forecast, the less intervention is required

11.12.2018

A detailed article by freelance journalist Daniela Becker on the German reportage website RiffReporter, an innovative and award-winning project for “quality journalism on future topics”, presents TSCNET Services and the work of a Regional Security Coordinator (RSC) for the European power transmission grid. The article is based on thorough research and a talk with the two TSCNET managing directors, Maik Neubauer and Uwe Zimmermann. Besides the development of the company, the possible consequences of the EU package “Clean Energy for All Europeans” are also discussed.

An article on TSCNET Services has been issued on the reportage platform RiffReporter (picture: TSCNET Services / Quirin Leppert)

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> Read RiffReporter article, in German (html)

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“The backbone of cross-border trading” at Euroforum Conference

08.12.2018

Euroforum is a prestigious German promoter of first-class conferences, seminars and meetings and a subsidiary of the Handelsblatt Media Group, which publishes the leading German-language business newspaper. The Euroforum events bring together experts from business, science and politics and create forums for the transfer of knowledge and the exchange of opinions. This year’s Euroforum conference on 6 and 7 December in Düsseldorf, the state capital of North Rhine-Westphalia, was dedicated to the topic of “Intraday trading in the electricity sector – digitisation and automation as growth drivers”.

TSCNET Services as one of the five European Regional Security Coordinators (RSCs) – with fifteen transmission system operators (TSOs) from eleven central and eastern European countries as shareholders – can offer significant contributions on this area, which is why Maik Neubauer, one of the two Managing Directors of the Munich-based company, gladly accepted the invitation of Euroforum to speak at the conference. Mr. Neubauer, who acted in the past also as Board Member of the European Energy Exchange EEX where he already was part of a task force to work on a concept for a pan-European Intraday Trading system, presented the work of the European RSCs to an audience of experts. He stated that the work of the RSCs – largely unnoticed by the general public – is important to ensure a stable transmission network for their TSO shareholders with regional risk analyses. “Without the 24/7 work of the European TSOs and the RSCs to keep the European grid stable there wouldn’t be a sustainable basis for an efficient energy market on the continent,” Neubauer said.

In the conference many discussions had been around the development of the new European Intraday Trading System XBID that helps traders, generators, but also TSOs, to balance out the grids within the day of delivery.

Maik Neubauer presented the transmission grid as backbone of cross-border trading at Euroforum Conference in Düsseldorf, Germany

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> Visit Euroforum Conference website, in German (html)

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