Juha Haakana

Juha Haakana
Lappeenranta – Lahti University of Technology LUT

Ph.D

About

42
Publications
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311
Citations

Publications

Publications (42)
Technical Report
Full-text available
This report presents the key results based on the methodology, data, and publications of the project ”Impact of the distributed energy resources (DER) on a distribution network and energy stakeholders” carried out at LUT University between April 2019 and September 2020. The research project aimed at developing a generic methodology to quantify th...
Article
This paper presents a methodology to promote the operation of combined heat and power (CHP) power plant in the liberalized energy markets. The methodology considers a combination of marketplaces available to the power plant for its end products heat and electrical power, with a special reference to electricity reserve market opportunities. A result...
Conference Paper
This paper considers opportunities of bioenergy-based combined heat and power (CHP) to balance fluctuation in solar and wind power. The paper studies participation of CHP production in an electrical power reserve, which provides opportunities to integrate more renewable energy production into the electrical system and also makes it possible to rais...
Conference Paper
This paper considers how power-based distribution tariffs encourage electricity end-users to invest in energy storages to reduce their peak loads. The study uses actual automatic meter reading (AMR) data from 30 000 customers the annual electricity consumption of which is less than 50 MWh. The customers locate in the area of a Finnish distribution...
Conference Paper
The objective of the paper is to develop an algorithm to estimate the profitability of energy storage operation in the balancing power market. The main reasons for this study are the fast growth of the PV battery market in the residential sector in the coming years and, at the same time, challenges related to the integration of huge amounts of rene...
Article
This paper provides a view to assess effects of supply security requirements in Finnish electricity distribution networks on network renovation demands. In the beginning of September in 2013 a new Electricity Market Act came into effect in Finland. It sets limits for duration of allowed interruptions. As a background of the act are long interruptio...
Conference Paper
Protection against wide-scale blackouts is a crucial part of the management of the modern electricity distribution business. Although the everyday reliability of electricity distribution has been significantly improved by network automation solutions and new construction techniques over the past few decades, the challenge of major storms and long-l...
Article
The popularity of underground cables to replace overhead lines is increasing. This is partly a consequence of the requirement for better reliability and supply security. In some countries, the authorities have set maximum interruption durations for distribution system operators to steer the operators to avoid the use of overhead lines. However, alt...
Conference Paper
Extreme weather conditions challenge electricity distribution from time to time. In the Nordic countries, strong wind and snow storms together with the high rate of overhead lines located in forests create demanding conditions for the distribution business. To meet the requirements of modern society, management of major blackouts plays a significan...
Conference Paper
Energy storage system technologies have been developed within the recent years. The energy capacity of the storages has been increased and also more power can be discharged from the storages. The development has opened new possibilities to utilise energy storages. The technical success has been the key factor but also falling prices of energy stora...
Article
The nature of transport and energy use is radically changing along with the upward trend of electric vehicles (EVs). This poses a challenge for the existing electricity distribution infrastructure. Key questions are: what efforts are required to guarantee that the network infrastructure has sufficient capability to deliver energy and power to the c...
Article
Many countries have adopted economic regulation to the electricity distribution. Economic regulation plays a significant role when long-term decisions are determined. The regulatory model sets the framework for the network planning process. It does not give strict instructions for the planning process but aims to ensure the development of the netwo...
Conference Paper
Full-text available
Electricity distribution networks face lots of challenges within the next decade. The structure and topology of the networks stem mostly from the early days of the electricity distribution even from 50s. The changes in the society around the distribution network have been significant. The requirements of the supply security have been tightened and...
Article
Purpose – Underground cabling has become a true alternative in construction of electricity distribution networks, even in rural areas. The increasing amount of underground installations requires strategic work that helps to define the most profitable cabling targets. The purpose of this paper is to introduce a methodology to consider the undergroun...
Article
The nature of transport and energy use is radically changing along with the upward trend of electric vehicles. The rapid technological development of electrical vehicles opens new opportunities from the electricity distribution point of view. Efficiency can be improved by implementing energy storages to the grid and cutting the load peaks by feedin...
Conference Paper
Strategic planning has become a significant element in the electricity distribution. Requirements and commitments to distribution system operators (DSOs) have increased and ageing distribution infrastructure causes its own challenges. At the same time the efficiency of computers has increased and software development has been quick that has provide...
Article
The number of electric vehicles (EVs) is rapidly increasing, and the upward trend seems to be continuing also in the future. The increasing number of electric vehicles causes a need to develop the charging infrastructure, and moreover, it is necessary to analyze the network effects of the simultaneous charging of numerous electric vehicles. A furth...
Article
Purpose – The purpose of this paper is to establish a methodological framework to address key issues in electricity distribution network development. The paper defines subtasks in the strategy process and presents key elements in the strategy work and long-term network planning. The results are illustrated by a case network. Design/methodology/appr...
Article
High supply security is one of the key elements in the modern electricity distribution and smart grids. A reason for this is that reliable electricity distribution is almost a vital necessity for today's society. Most of the functions in the community are dependent on electricity, and if the distribution of this essential commodity is interrupted f...
Conference Paper
Full-text available
Good electricity supply availability is turning out to be more and more important for today's society as the electricity dependability increases. Furthermore, high availability of electricity supply is one of the commonly recognized targets of Smart Grid visions. Enhancing the supply availability call for technology investments and reorganization o...
Article
The role of electricity has become more significant in today's society; electricity distribution has to be reliable and there should be no outages. Incentives from economic regulation support this direction of development. Therefore, there is a demand for development of distribution networks. The key question is, from which viewpoint the issue of r...
Article
Full-text available
In Finland, new reliability criteria for electricity distribution companies have been analysed, and now, the implementation of the criteria is being discussed. The criteria cover the customer-based cumulative sum of durations of long interruptions and the cumulative number of short interruptions. The criteria are established by the Finnish Energy I...
Conference Paper
Full-text available
The role of electricity has become more significant in today's society; electricity distribution has to be reliable and there should be no outages. Furthermore, ageing of networks is an issue that has to be taken into account. Underground cabling will be one of the basic elements in renovation of rural area overhead (OH) line distribution networks....
Conference Paper
Full-text available
Electricity distribution technology is taking remarkable step by implementing the low-voltage DC-technology (LVDC) to the distribution networks. The first installations of this economical, transmission capacity and power quality increasing innovation in public electricity distribution will be done in coming years. Recent research results shows that...
Conference Paper
Full-text available
Electricity distribution technology is taking remarkable step by implementing the low-voltage DC-technology to the distribution networks. The first installations of this economical, transmission capacity and power quality increasing innovation in public electricity distribution will be done in coming years. Recent research results shows that there...
Article
Full-text available
Upcoming trend of electric vehicles (EV) may create remarkable reinforcement needs in electricity distribution utilities. In some areas, peak power in the network may even double or triple if charging of EVs is done without intelligence on it. In the paper, case study of network effects of large-scale penetration of EVs in actual distribution compa...

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Projects

Projects (3)
Archived project
The research project aimed at developing a generic methodology to quantify the impact of distribution energy resources on a distribution grid. The methodology was applied on actual distribution grids and load data that consisted of two example distribution grids in rural (15000 customers, mostly residential), urban (almost 8000 customers, mostly flats and office buildings),and suburban areas (approx. 5000 customers, mostly detached and terraced houses). The key outcomes of the project were: 1. Models of dynamic DER profiles for EV, BESS, and new heating solutions. ’Dynamic’ means that the input parameters that define the shape of the profile can be easily varied. 2. Allocation of DER profiles to the end-customers depending on penetration rate and location. 3. Model of a distribution grid topology and dimensions for power flow simulations. 4. Analysis of the grid impact for various distribution grids and DER scenarios. 5. Model of multi-objective operation of BESS for FCR-N, self-consumption, and peak shaving tasks. 6. Representation of the grid impact range as a probability of its occurrence. 7. Quantitative results for case networks.