JUSTIFICATION OF OPTIMAL LOCATION OF CONNECTION OF THE DISTRIBUTED GENERATION SOURCE AND VALUE OF ITS POWER
Goal. To analyze the options for the development of the 110 kV electricity network with sources of distributed generation. Establishing the relationship between power of the source of distributed generation with the voltage changes in the nodes and transformer active power losses change. To provide...
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| Дата: | 2019 |
|---|---|
| Автори: | , |
| Формат: | Стаття |
| Мова: | English Ukrainian |
| Опубліковано: |
National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”
2019
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| Онлайн доступ: | http://eie.khpi.edu.ua/article/view/2074-272X.2019.2.08 |
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| Назва журналу: | Electrical Engineering & Electromechanics |
Репозиторії
Electrical Engineering & Electromechanics| id |
eiekhpieduua-article-164425 |
|---|---|
| record_format |
ojs |
| institution |
Electrical Engineering & Electromechanics |
| collection |
OJS |
| language |
English Ukrainian |
| topic |
source of distributed generation flow distribution load factor of transformer power losses voltage power factory solar power station 621.316 джерела розподіленої генерації потокорозподіл коефіцієнт завантаження трансформатора втрати потужності напруга сонячна електростанція 621.316 |
| spellingShingle |
source of distributed generation flow distribution load factor of transformer power losses voltage power factory solar power station 621.316 джерела розподіленої генерації потокорозподіл коефіцієнт завантаження трансформатора втрати потужності напруга сонячна електростанція 621.316 Kyryk, V. V. Bohomolova, O. S. JUSTIFICATION OF OPTIMAL LOCATION OF CONNECTION OF THE DISTRIBUTED GENERATION SOURCE AND VALUE OF ITS POWER |
| topic_facet |
source of distributed generation flow distribution load factor of transformer power losses voltage power factory solar power station 621.316 джерела розподіленої генерації потокорозподіл коефіцієнт завантаження трансформатора втрати потужності напруга сонячна електростанція 621.316 |
| format |
Article |
| author |
Kyryk, V. V. Bohomolova, O. S. |
| author_facet |
Kyryk, V. V. Bohomolova, O. S. |
| author_sort |
Kyryk, V. V. |
| title |
JUSTIFICATION OF OPTIMAL LOCATION OF CONNECTION OF THE DISTRIBUTED GENERATION SOURCE AND VALUE OF ITS POWER |
| title_short |
JUSTIFICATION OF OPTIMAL LOCATION OF CONNECTION OF THE DISTRIBUTED GENERATION SOURCE AND VALUE OF ITS POWER |
| title_full |
JUSTIFICATION OF OPTIMAL LOCATION OF CONNECTION OF THE DISTRIBUTED GENERATION SOURCE AND VALUE OF ITS POWER |
| title_fullStr |
JUSTIFICATION OF OPTIMAL LOCATION OF CONNECTION OF THE DISTRIBUTED GENERATION SOURCE AND VALUE OF ITS POWER |
| title_full_unstemmed |
JUSTIFICATION OF OPTIMAL LOCATION OF CONNECTION OF THE DISTRIBUTED GENERATION SOURCE AND VALUE OF ITS POWER |
| title_sort |
justification of optimal location of connection of the distributed generation source and value of its power |
| title_alt |
ОБҐРУНТУВАННЯ ОПТИМАЛЬНОГО МІСЦЯ ПІДКЛЮЧЕННЯ ДЖЕРЕЛА РОЗОСЕРЕДЖЕНОГО ГЕНЕРУВАННЯ ТА ЗНАЧЕННЯ ЙОГО ПОТУЖНОСТІ |
| description |
Goal. To analyze the options for the development of the 110 kV electricity network with sources of distributed generation. Establishing the relationship between power of the source of distributed generation with the voltage changes in the nodes and transformer active power losses change. To provide the minimum value of network active power loss the authors justify the conditions for optimal connection of the source of distributed generation and value of its power. Methodology. The authors have used the DigSilent Power Factory software environment to create a 110 kV network model and have made a series of simulation of the network operating modes with solar power plants. Results. Based on the operational parameters it is established that the change in power generation in the accepted limits normally does not lead to abnormal voltage variations in the nodes, with power losses having characteristic changes due to alterations in the network of power flows. In the network with solar power plants, the transformer losses of active power is reduced with increasing generation power, except for the most remote nodes from the balancing point, in which losses reduction takes place with load of transformers approximately up to 60 %. At significant overloads of transformers (up to 130 %) there is reactive power losses increasing in comparison with losses in the network without solar power plants. The dependence of active power losses in the network on the load of transformers has a nonlinear character). For each node at one value of transformer load the active losses are different. Less reactive power losses occur at lower load ratios of transformer. When increasing the load of transformers, the rate of increase in reactive losses is higher than the active ones. Also for closed networks with voltage of 110 kV it has been found that the optimal node for connecting the distributed generation is a node with a flow division of power. If there are several such nodes in the network, the optimal one for connecting is the node with the maximum load. The optimal power of the solar station in the node should not exceed 110 % of the installed transformer's power. Originality. For the first time the dependence between the place of the best connection source of the distributed generation with the point of flow distribution with the greatest current fraction from network balancing point was established. In this case the power of the source of distributed generation must not exceed 10 % of the total power of the transformers in this node. Practical significance. We have obtained reasonable conditions for connecting source of distributed generation to a closed electric network of 110 kV without performing large volumes of mode calculations. Namely, the optimal connection point is the point of flow distribution with the greatest current fraction from network balancing point. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” |
| publishDate |
2019 |
| url |
http://eie.khpi.edu.ua/article/view/2074-272X.2019.2.08 |
| work_keys_str_mv |
AT kyrykvv justificationofoptimallocationofconnectionofthedistributedgenerationsourceandvalueofitspower AT bohomolovaos justificationofoptimallocationofconnectionofthedistributedgenerationsourceandvalueofitspower AT kyrykvv obgruntuvannâoptimalʹnogomíscâpídklûčennâdžerelarozoseredženogogeneruvannâtaznačennâjogopotužností AT bohomolovaos obgruntuvannâoptimalʹnogomíscâpídklûčennâdžerelarozoseredženogogeneruvannâtaznačennâjogopotužností |
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2024-06-01T14:39:15Z |
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2024-06-01T14:39:15Z |
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| spelling |
eiekhpieduua-article-1644252019-04-16T12:30:41Z JUSTIFICATION OF OPTIMAL LOCATION OF CONNECTION OF THE DISTRIBUTED GENERATION SOURCE AND VALUE OF ITS POWER ОБҐРУНТУВАННЯ ОПТИМАЛЬНОГО МІСЦЯ ПІДКЛЮЧЕННЯ ДЖЕРЕЛА РОЗОСЕРЕДЖЕНОГО ГЕНЕРУВАННЯ ТА ЗНАЧЕННЯ ЙОГО ПОТУЖНОСТІ Kyryk, V. V. Bohomolova, O. S. source of distributed generation flow distribution load factor of transformer power losses voltage power factory solar power station 621.316 джерела розподіленої генерації потокорозподіл коефіцієнт завантаження трансформатора втрати потужності напруга сонячна електростанція 621.316 Goal. To analyze the options for the development of the 110 kV electricity network with sources of distributed generation. Establishing the relationship between power of the source of distributed generation with the voltage changes in the nodes and transformer active power losses change. To provide the minimum value of network active power loss the authors justify the conditions for optimal connection of the source of distributed generation and value of its power. Methodology. The authors have used the DigSilent Power Factory software environment to create a 110 kV network model and have made a series of simulation of the network operating modes with solar power plants. Results. Based on the operational parameters it is established that the change in power generation in the accepted limits normally does not lead to abnormal voltage variations in the nodes, with power losses having characteristic changes due to alterations in the network of power flows. In the network with solar power plants, the transformer losses of active power is reduced with increasing generation power, except for the most remote nodes from the balancing point, in which losses reduction takes place with load of transformers approximately up to 60 %. At significant overloads of transformers (up to 130 %) there is reactive power losses increasing in comparison with losses in the network without solar power plants. The dependence of active power losses in the network on the load of transformers has a nonlinear character). For each node at one value of transformer load the active losses are different. Less reactive power losses occur at lower load ratios of transformer. When increasing the load of transformers, the rate of increase in reactive losses is higher than the active ones. Also for closed networks with voltage of 110 kV it has been found that the optimal node for connecting the distributed generation is a node with a flow division of power. If there are several such nodes in the network, the optimal one for connecting is the node with the maximum load. The optimal power of the solar station in the node should not exceed 110 % of the installed transformer's power. Originality. For the first time the dependence between the place of the best connection source of the distributed generation with the point of flow distribution with the greatest current fraction from network balancing point was established. In this case the power of the source of distributed generation must not exceed 10 % of the total power of the transformers in this node. Practical significance. We have obtained reasonable conditions for connecting source of distributed generation to a closed electric network of 110 kV without performing large volumes of mode calculations. Namely, the optimal connection point is the point of flow distribution with the greatest current fraction from network balancing point. Розглянуто підхід до визначення потужності джерела розосередженого генерування (ДРГ) та оптимального місця його підключення для забезпечення мінімального значення втрат активної потужності в замкненій електричній мережі напругою 110 кВ. Виконано аналіз впливу потужності сонячної електростанції на режимні параметри мережі. Запропоновано критерій визначення значення потужності ДРГ в вузлах можливого підключення. Розроблено рекомендації до визначення оптимального вузла підключення джерела розосередженого генерації відповідної потужності. National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2019-04-16 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2019.2.08 10.20998/2074-272X.2019.2.08 Electrical Engineering & Electromechanics; No. 2 (2019); 55-60 Электротехника и Электромеханика; № 2 (2019); 55-60 Електротехніка і Електромеханіка; № 2 (2019); 55-60 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2019.2.08/163479 http://eie.khpi.edu.ua/article/view/2074-272X.2019.2.08/163480 Copyright (c) 2019 V. V. Kyryk, O. S. Bohomolova https://creativecommons.org/licenses/by-nc/4.0 |