Increasing flexibility

Electricity system management needs even more flexibility than before due to the increase of weather-dependent production. We are studying the impacts and utilisation possibilities of the flexibility market in the management of the distribution network and in the planning of customers’ connection solutions and network service pricing.

Developing the tariff structure of small customers

We are developing the pricing structure of network services for small customers, which means that the customer will have a better opportunity to have an impact on their electricity distribution bill. The fixed basic charge of the tariff structure is partly being replaced by a power component.

Studies related to the development of the tariff structure for small customers

Alternative power-based pricing schemes for distribution network tariff of small customers
Lummi, Rautiainen, Järventausta (Tampere University of Technology); Heine, Lehtinen, Hyvärinen (Helen Electricity Network Ltd.); Salo (Elenia). IEEE PES ISGT 2018.

Power-based Distribution Tariff of Small Customers in Different Operational Environments – Case Study of Two Networks
Lummi, Rautiainen, Järventausta (Tampere University of Technology); Heine, Lehtinen, Hyvärinen (Helen Electricity Network Ltd.); Salo (Elenia). IEEE PES ISGT 2017.

Analysis of Transition Steps Towards Power-based Distribution Tariff of Small Customers
Lummi, Rautiainen, Järventausta (Tampere University of Technology); Heine, Lehtinen, Apponen, Hyvärinen (Helen Electricity Network Ltd.). CIRED 2017 / IET Journals.
http://digital-library.theiet.org/content/journals/10.1049/oap-cired.2017.0908

Development of power-based tariff structure for small customers and pathway for this change
Apponen, Heine, Lehtinen (Helen Electricity Network Ltd.); Lummi, Järventausta, (Tampere University of Technology), Lehtonen (Aalto). CIRED 2017 / IET Journals.
http://digital-library.theiet.org/content/journals/10.1049/oap-cired.2017.0701

Jakeluverkon tariffirakenteen kehitysmahdolisuudet ja vaikutukset
Honkapuro, Haapaniemi, Haakana, Lassila, (Lappeenrannan teknillinen yliopisto);  Lummi, Rautiainen, Supponen, Koskela, Järventausta (Tampereen teknillinen yliopisto). LUT Scientific and Expertise Publications No. 65.
http://urn.fi/URN:ISBN:978-952-335-105-9

Pienasiakkaan tehotariffin kehitys ja käyttöönotto
Apponen, Roope. Diplomityö. Aalto - yliopisto.
https://aaltodoc.aalto.fi/handle/123456789/22/discover

Variations of Power Charge Basis of Power-based Distribution Tariff of Small Customers
Lummi, Rautiainen, Järventausta (Tampere University of Technology); Heine, Lehtinen, Apponen, Hyvärinen (Helen Electricity Network Ltd.). IEEE PES ISGT 2016.

Electricity distribution network tariffs – present practices, future challenges and development possibilities
Lummi, Rautiainen, Järventausta (Tampere University of Technology); Heine, Lehtinen, Hyvärinen (Helen Electricity Network Ltd.). CIRED 2016 Workshop. Paper 0112.

Energy storage systems

Energy storage systems are both consumption and production units. Their sizes range from industrial-scale energy storage systems to household sites and electric vehicle batteries. The energy and power of the energy storage systems can be utilised for the needs of customers, the local electricity network or the system level of the transmission network.  

In terms of energy storage systems, we are involved in the research entity of the Kalasatama battery energy storage facility. Acquired by Helen for Kalasatama in Helsinki in 2016, the 1.2 MW, 600 kWh battery-operated storage facility, which was the largest in the Nordic countries at the time, is a joint research platform of Helen, Helen Electricity Network and Fingrid in 2016–2019. In the study, the functionalities of the energy storage system are tested with respect to frequency regulation for the transmission system operator and with respect to the regulation of reactive power and voltage for the distribution system operator. This individual energy storage system has also been tested for the balancing of a rapidly fluctuating load.  

The energy system has a diverse range of batteries in different applications. The battery entity has also been studied in a wider research project on multiprocessing of batteries.

Studies related to energy storage facilities

 

Battery Energy Storage for Distribution System - Case Helsinki
Heine, Pihkala, Hellman, Siilin. The 11th International Conference on Power Quality and System Reliability 2019.

Methodoloty to define a BESS operating strategy for the end customer in the changing business environment
Belonogova, Tikka, Haapaniemi, Haakana, Honkapuro, Partanen (LUT); Heine, Pihkala, Hellman, Hyvärinen (Helen Electricity Network Ltd.). EEM 2018.

Multi-objective role of a BESS in an energy system
Belonogova, Tikka, Honkapuro, Lassila, Partanen (LUT); Heine, Pihkala, Hellman, Hyvärinen (Helen Electricity Network Ltd.); Karppinen, Siilin (Helen); Matilainen, Laasonen (Fingrid). CIRED Workshop 2018. Paper 0494. 

Final report: Multi-objective role of battery energy storages in an energy system
Tikka, Belonogova, Honkapuro, Lassila, Haakana, Lana, Romanenko, Haapaniemi, Narayanan, Kaipia, Niemelä, Partanen (LUT). Tutkimusraportit – Research Reports 75.
http://urn.fi/URN:ISBN:978-952-335-203-2

Benefits of Battery Energy Storage for System, Market, and Distribution Network – Case Helsinki
Hellman, Pihkala, Hyvärinen, Heine (Helen Electricity Network Ltd.); Karppinen, Siilin, Lahtinen (Helen); Laasonen, Matilainen (Fingrid). CIRED 2017. Paper 0810.
http://digital-library.theiet.org/content/journals/10.1049/oap-cired.2017.0810

Demand response

The parties to the electrical power system have their own roles in the growth of flexibility and in contributing to its realisation. The distribution system operator enables demand response and it can also utilise demand response in its own operational activities. The implementation of demand response requires exchange of information between various operators and systems.

Studies related to demand response 

2019: Heila-projektin loppuraportti. Tampereen teknillinen yliopisto. 2019.

2019: Sähkönjakeluverkko kysyntäjouston mahdollistajana. Korpio, Juha. Diplomityö. Aalto – yliopisto.

Research projects

Flexibility is a familiar subject in larger and smaller research and development projects. When flexibility development applies to the entire power system, there are extensive national and international research projects on the subject.

Helen Electricity Network is involved in the EU Horizon SysFlex research and innovation project in 2018–2021. The project studies how effectively it is possible to connect an increasingly higher amount of renewable energy production to the electrical power system with the aid of coordinated flexibilities. The project has three main demonstrators, Finland, Germany and Italy.  

The Helsinki demo tests how in a low-voltage network small active and reactive power flexibilities can be forecast, aggregated and utilised in the transmission system operator’s market places and for the needs of the distribution system operator. The EU Horizon SysFlex project was preceded by the national research projects FlexE in 2015–2016 and SGEM in 2011–2014.  

Helen Electricity Network took part in both SGEM and FLEXe in the study of technical and commercial readiness of a smart electricity system and flexibility markets.

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