Methodology for Transmission Network Development Planning Considering Electricity Market

Promocijas darbā ir izstrādāta jauna deterministiska koncepcija ar dinamisku pieeju pārvades tīklu attīstības plānošanai pilnīgās konkurences liberalizētos elektroenerģijas tirgus apstākļos, pamatojoties uz tehniskiem un ekonomiskiem regulēšanas principiem. Promocijas darbs ir veltīts pārvades tīklu ilgtermiņa attīstības plānošanas metodoloģijai. Pēdējo gadu laikā ir pieaugusi īpaša uzmanība pārvades tīklu plānošanai. Izveidojot jaunu tiesisko regulējumu, kļuva aktuāla nepieciešamība pārskatīt pārvades tīklu plānošanas kritērijus. Energosistēmas attīstības un ilgtermiņa plānošanas uzdevumos, lēmumu pieņēmējiem un plānošanas inženieriem nepieciešams atbilstošs instruments, kas spētu novērtēt liela mēroga atjaunojamo energoresursu ietekmi. Papildus, lai nodrošinātu optimālus attīstības risinājumus, ir nepieciešama visaptveroša izpratne par Sistēmu un iespējamām ietekmēm. Turklāt, ir nepieciešama izpratne par elektroenerģijas tirgus darbību, ievērojot ražošanas un pārvades jaudas mainīgo raksturu. Darba mērķis ir izstrādāt metodoloģiju, kuru var izmantot pārvades pietiekamības plānošanai. Tā dos iespēju noteikt un pamatot esošo un plānoto energosistēmas tehnisko infrastruktūru, to iespējamo modifikāciju nākotnē, elektroenerģijas tirgus struktūras izveidi, kā arī izmaiņas vides regulēšanā, ar klasificētiem pasākumiem, kuri var būt lietderīgi izmantoti dažādos laika horizontos: ilgtermiņā, vidējā termiņā un operatīvā vadībā

Baltic National Transmission Network Development Tendency

The article discusses the development of Baltic transmission networks, related to the program of the European Union (EU) to improve the security of energy supply, competitiveness and improve the development. Consider infrastructure projects to meet the needs of electricity in the EU. The highlight issues are plan of Baltic energy markets merging and Latvian energy market development tendency

Assessment of Optimal Power Flow Application in Long-Term Development Planning

This paper is focused on sustainable development management principles with attention to optimal power flow (OPF) application in development tasks. Existing method for criterion calculations in development tasks with market conditions is taken as starting point. Methods for OPF problem solving and assumptions in development tasks are provided in the paper

Modeling of Zonal Prices with Application in Long-Term Development Planning Strategies

Increasing integration in the Baltic electricity market and Europe-wide interconnection establishment makes it necessary to consider markets principals for power system development planning. In this paper is given a method for modelling of zonal prices with application and long-term development planning strategies. Proposed method of zonal prices is based on Interior Point Method (IPM) for finding maxima of Social Welfare subject to power system constraints. The main parts of this task are improving existing method for criterion calculations in development tasks with market conditions as well as analyze advantages and disadvantages of Method. The results of this research could contribute to development of methods appropriate in sustainable development management of power system

Тенденции развития системообразующих сетей Балтии

В статье рассматривается развитие системообразующих сетей Балтии в связи с программой повышения надежности и конкурентоспособности энергоснабжения Европейского союза (ЕС). Рассмотрены проекты в области инфраструктуры обеспечения нужд энергоснабжения в ЕС. Главное внимание уделяется плану соединения энергетических рынков Балтии и тенденции развития рынка электроэнергии в Латвии

Baltic Power System Development - Tendency and Infrastructure Projects

This paper describs the development tendency of Baltic power system, related to the program of the European Union (EU) to improve the security of energy supply, competitiveness and improve the development. Creation of Baltic electricity market have several advantages: highly developed interconnections between the countries, good cooperation and coordination among transmission system operators and the awareness of the benefits of a common market

AC and DC Optimal Power Flow Models for Long-Term Development Planning

Increasing integration in the Baltic electricity market and Europe-wide interconnection establishment makes it necessary to consider markets principals for power system development planning. The Optimal Power Flow (OPF) is one of the fundamental problems in power system analyses. Long-term development planning typically requires a large number of repetitive OPF solutions. In this comparison, the calculation speed of the OPF solutions beside their accuracy is observed. The full alternating current OPF is accurate, but takes long solution time. The direct current OPF is a simple approximation of OPF that is very fast but is not so accurate

Development of the Model for Small Scale Asynchronous Generator Connection Impact Assessment on Distribution Network

It is expected that the production of electrical energy from renewable energy sources and liberalized market further development can cause changes in the distribution network operating modes, as with time more small scale power plants will operate in liberalized market rather than ones with subsidies. Such situation can cause more frequent starts and stops of power plants comparing to current situation. To assess the impact of asynchronous generator connection to the existing network, taking into account technical limitations, there was created small scale HPP electric model, which simulates asynchronous machine transient processes. Mathematical model of small scale HPP was developed for simulation of HPP electricity production. The developed model consists of generator and network parts and is capable of modelling various generation and load interaction scenarios. Different generation and load scenarios have been modelled to evaluate generator connection impact on the existing network, taking into account technical constraints. Load – generating interaction scenarios modelling were implemented in Matlab environment. Power flow model was tested in Power World environment in order to verify the accuracy of its operation. Network and HPP simulations were carried out using the widely accepted IEEE 37 node test feeder. Paper focuses on description of model and electrical machine and results of case study performed to test proposed mathematical model. The elaborated model can be used for representing wide range of HPPs in assessment analysis of distribution network, as well as adapted for modelling of other types of power plants that use asynchronous generators

Dynamic Management of Power System Sustainable Development with Smart Grids application on Transmission Level

The article discusses the dynamic management of power system development and preconditions required for realization Smart grid technologies (SGT) and sustainable system development on transmission level. This paper presents research, which is based on the new energy policy of European Union in vision of a smart grid, to develop and deploy more reliable, secure, economical, efficient, safety, and environmentally friendly electric system