Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928882
Ayodeji Olalekan Salau, Oladimeji Joseph Ayamolowo, S. Wara
Gas flaring is one of Nigeria’s major environmental challenges like in most developing countries. Nigeria’s carbon footprint with respect to the emission of gases such as CO2, N2O, and the huge economic loss due to flaring has resulted in a colossal loss of financial resources. There is therefore a need to urgently address the negative impacts of gas flaring. In this paper, an attempt is made to quantify the financial losses resulting from flared gas and show how zero flaring can serve as a tool to mitigate Nigeria’s energy deficit. Finally, it is the view of the authors that Nigeria’s financial losses occasioned by gas flaring can become a source of power through a gas to power scheme and a source of revenue through a gas monetization scheme.
{"title":"Meeting Nigeria’s Energy shortfall by Zero Flaring","authors":"Ayodeji Olalekan Salau, Oladimeji Joseph Ayamolowo, S. Wara","doi":"10.1109/PowerAfrica.2019.8928882","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928882","url":null,"abstract":"Gas flaring is one of Nigeria’s major environmental challenges like in most developing countries. Nigeria’s carbon footprint with respect to the emission of gases such as CO2, N2O, and the huge economic loss due to flaring has resulted in a colossal loss of financial resources. There is therefore a need to urgently address the negative impacts of gas flaring. In this paper, an attempt is made to quantify the financial losses resulting from flared gas and show how zero flaring can serve as a tool to mitigate Nigeria’s energy deficit. Finally, it is the view of the authors that Nigeria’s financial losses occasioned by gas flaring can become a source of power through a gas to power scheme and a source of revenue through a gas monetization scheme.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123227372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928644
S. O. Showers, A. Raji
Due to the intermittent power output of renewable energy sources, energy storage has become unavoidable and necessary in grid connected renewable energy systems. This is applicable in grid connected renewable energy integration, transmission, distribution, micro-grid and ancillary services like voltage regulation, frequency regulation and spinning reserves. In this paper, different energy storage systems are studied and presented, with regards to technology advancement, individual benefits, challenges, and applications, considering their influence on the total power system network. Consideration is given to generation, transmission, distribution and applicability. Different energy storage system (ESS) technologies are reviewed and explored together with benefits of ancillary services on energy storage system on grid connected renewable energy sources. The challenges of high penetration level of renewable energy sources on energy storage application in power systems are investigated considering the technical and economic benefits together with challenges. However, the advancement and growth of potential energy storage system is estimated and investigated accordingly.
{"title":"Benefits and Challenges of Energy Storage Technologies in High Penetration Renewable Energy Power Systems","authors":"S. O. Showers, A. Raji","doi":"10.1109/PowerAfrica.2019.8928644","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928644","url":null,"abstract":"Due to the intermittent power output of renewable energy sources, energy storage has become unavoidable and necessary in grid connected renewable energy systems. This is applicable in grid connected renewable energy integration, transmission, distribution, micro-grid and ancillary services like voltage regulation, frequency regulation and spinning reserves. In this paper, different energy storage systems are studied and presented, with regards to technology advancement, individual benefits, challenges, and applications, considering their influence on the total power system network. Consideration is given to generation, transmission, distribution and applicability. Different energy storage system (ESS) technologies are reviewed and explored together with benefits of ancillary services on energy storage system on grid connected renewable energy sources. The challenges of high penetration level of renewable energy sources on energy storage application in power systems are investigated considering the technical and economic benefits together with challenges. However, the advancement and growth of potential energy storage system is estimated and investigated accordingly.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114618843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928929
A. Oladeji, M. Akorede
Prior to planning a renewable energy project, it is essential to first determine the abundance of the renewable energy resources available at the site of interest. Equally important is the information of the present and future electrical energy demand of the community to serve. This paper presents a resource assessment for hydropower and solar energy production in a cluster of three off-grid rural communities in Nigeria. A hydrological gauge is installed along the available river section to measure the water level for a period of one year, and water velocity with Flow Probe. The average daily solar irradiance of 265 W/m2 is obtained from a seven-year data collected from the Nigerian Meteorological Agency for the site. With a projection of a total annual energy demand of 176.7 MWh in the first year and 229 MWh in the tenth year, the annual energy generation from the hydropower is estimated at 2,624 MWh with a capacity factor of 0.83. Meanwhile, a solar panel of 300 W capacity is estimated to produce 442.36 kWh annually. Conveniently, the production from the two energy sources is more than adequate for the communities.
{"title":"Assessment of Solar and Hydropower Energy Potentials of Three Rural Communities in Nigeria","authors":"A. Oladeji, M. Akorede","doi":"10.1109/PowerAfrica.2019.8928929","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928929","url":null,"abstract":"Prior to planning a renewable energy project, it is essential to first determine the abundance of the renewable energy resources available at the site of interest. Equally important is the information of the present and future electrical energy demand of the community to serve. This paper presents a resource assessment for hydropower and solar energy production in a cluster of three off-grid rural communities in Nigeria. A hydrological gauge is installed along the available river section to measure the water level for a period of one year, and water velocity with Flow Probe. The average daily solar irradiance of 265 W/m2 is obtained from a seven-year data collected from the Nigerian Meteorological Agency for the site. With a projection of a total annual energy demand of 176.7 MWh in the first year and 229 MWh in the tenth year, the annual energy generation from the hydropower is estimated at 2,624 MWh with a capacity factor of 0.83. Meanwhile, a solar panel of 300 W capacity is estimated to produce 442.36 kWh annually. Conveniently, the production from the two energy sources is more than adequate for the communities.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121130939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928727
K. Aganah, J. Chukwuma, M. Ndoye
Power consumption in many countries continues to outpace the power generation capabilities of the main grid. To circumvent this challenge, individual households or even entire communities are going off-grid. The most ubiquitous alternative energy sources are from wind- and solar-generated power. From the consumers point of view, the biggest challenge to taking advantages of these resources is usually with the installation of the off-grid system, thus necessitating a plug-and-play architecture. Furthermore, the ability to seamlessly transition to an off-grid generator when the main power grid goes down remains a critical technical challenge. In this paper, we review existing architectures for off-grid plug-and-play power generators. We also present specifications and system architectures for off-grid plug-and-play solar-powered generators that would be well-suited to African countries.
{"title":"A Review of Off-Grid Plug-and-Play Solar Power Systems: Toward a New \"I Better Pass My Neighbour\" Generator","authors":"K. Aganah, J. Chukwuma, M. Ndoye","doi":"10.1109/PowerAfrica.2019.8928727","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928727","url":null,"abstract":"Power consumption in many countries continues to outpace the power generation capabilities of the main grid. To circumvent this challenge, individual households or even entire communities are going off-grid. The most ubiquitous alternative energy sources are from wind- and solar-generated power. From the consumers point of view, the biggest challenge to taking advantages of these resources is usually with the installation of the off-grid system, thus necessitating a plug-and-play architecture. Furthermore, the ability to seamlessly transition to an off-grid generator when the main power grid goes down remains a critical technical challenge. In this paper, we review existing architectures for off-grid plug-and-play power generators. We also present specifications and system architectures for off-grid plug-and-play solar-powered generators that would be well-suited to African countries.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"11 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116930390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928826
O. Taiwo, I. Davidson
To enable secondary distribution network to perform optimally, it is critical to assess the performance of the system. Optimum performance means acceptable voltage profile, increase reliability of supply, no overloading of cables and distribution transformers, absence of imbalances in both voltage and current phases and acceptable loss. This work evaluates the performance of secondary distribution network as a result of voltage losses, voltage deviation, voltage variation and voltage imbalance using MATLAB software. This paper presents a performance analysis of a typical Eskom secondary 11/0.4 kV, unbalanced secondary distribution system. The network was modeled with standard network parameters for secondary Eskom distribution network using MATLAB/Simulink Sim Power System tool box. The summary of the paper gives recommendations on effectual techniques for improving the voltage profile and reducing the voltage imbalance and voltage drop to an allowable standard.
为了使二次配电网达到最佳运行状态，对系统性能进行评估是至关重要的。最佳性能意味着可接受的电压分布，增加供电的可靠性，电缆和配电变压器不过载，电压和电流相位不平衡以及可接受的损耗。本文利用MATLAB软件对二次配电网在电压损失、电压偏差、电压变化和电压不平衡等情况下的性能进行了评估。本文对Eskom公司典型的11/0.4 kV不平衡二次配电系统进行了性能分析。利用MATLAB/Simulink Sim Power System工具箱对Eskom二次配电网的标准网络参数进行建模。本文的总结提出了改善电压分布、降低电压不平衡和电压降至允许标准的有效技术建议。
{"title":"Assessment and Analysis of Typical Eskom Secondary Distribution Network under Normal Steady State","authors":"O. Taiwo, I. Davidson","doi":"10.1109/PowerAfrica.2019.8928826","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928826","url":null,"abstract":"To enable secondary distribution network to perform optimally, it is critical to assess the performance of the system. Optimum performance means acceptable voltage profile, increase reliability of supply, no overloading of cables and distribution transformers, absence of imbalances in both voltage and current phases and acceptable loss. This work evaluates the performance of secondary distribution network as a result of voltage losses, voltage deviation, voltage variation and voltage imbalance using MATLAB software. This paper presents a performance analysis of a typical Eskom secondary 11/0.4 kV, unbalanced secondary distribution system. The network was modeled with standard network parameters for secondary Eskom distribution network using MATLAB/Simulink Sim Power System tool box. The summary of the paper gives recommendations on effectual techniques for improving the voltage profile and reducing the voltage imbalance and voltage drop to an allowable standard.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124426134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928870
M. Bule, O. Ojo, J. Haruna
A wind energy system connected to a series compensated line is studied. The series compensation enhances the power transfer capability but could lead to various forms of oscillations and probable instabilities. Computer simulation is used to show the dynamics of the system and establishes a safe operating region for the studied system. The qd per unit dynamic model of the system is developed while the turbine – generator sub – system is modeled also in per unit using the two mass mechanical model. Simulation studies and steady state analysis of the system are performed including the small signal eigenvalue analysis. It is shown that at high negative slip, the electromagnetic torque and hence the available power increases with increasing level of compensation. However, as the slip decreases to zero, the electromagnetic torque converges to a common value irrespective of the compensation level. For stable operation, increasing compensation level, required an increasing slip.
{"title":"The Dynamics of Capacitive Compensated Grid Connected Squirrel Cage Induction Generators","authors":"M. Bule, O. Ojo, J. Haruna","doi":"10.1109/PowerAfrica.2019.8928870","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928870","url":null,"abstract":"A wind energy system connected to a series compensated line is studied. The series compensation enhances the power transfer capability but could lead to various forms of oscillations and probable instabilities. Computer simulation is used to show the dynamics of the system and establishes a safe operating region for the studied system. The qd per unit dynamic model of the system is developed while the turbine – generator sub – system is modeled also in per unit using the two mass mechanical model. Simulation studies and steady state analysis of the system are performed including the small signal eigenvalue analysis. It is shown that at high negative slip, the electromagnetic torque and hence the available power increases with increasing level of compensation. However, as the slip decreases to zero, the electromagnetic torque converges to a common value irrespective of the compensation level. For stable operation, increasing compensation level, required an increasing slip.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"65 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131003251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Network manager overuse their energy system considering the competition linked to energy sectors economic organization. That induces excessive losses and consequently the degradation of the quality of the power supply. This work consists of optimizing a distribution network of SBEE through the optimal positioning of distributed generator (PV) and SVC in a 138 node HTA departure. Optimization criteria such as losses, installation costs and voltage deviation have been considered and integrated in the NSGA-II algorithm. The algorithms have led to an optimal positioning of a PV system with 1.03MW of power at node 69 and two SVCs of respective powers of 2.07 MVar at node 58 and 2.05 MVar at node 82 of the network. The optimal cost obtained from the simulation is 2,729,000(USD). The NSGA-II algorithm is then a very robust optimization tool, efficient and can be used to optimize electrical grid.
{"title":"Technico-economic optimization of Distributed Generation (DG) and Static Var Compensator (SVC) positioning in a real radial distribution network using the NSGA-II genetic algorithm","authors":"Oloulade Arouna, Moukengue Imano Adolphe, Adekambi O. Robert, Amoussou Zinsou Kenneth, Vianou Antoine, Badarou Ramanou, Tamadaho Herman, Dangbedji Celestin","doi":"10.1109/PowerAfrica.2019.8928631","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928631","url":null,"abstract":"Network manager overuse their energy system considering the competition linked to energy sectors economic organization. That induces excessive losses and consequently the degradation of the quality of the power supply. This work consists of optimizing a distribution network of SBEE through the optimal positioning of distributed generator (PV) and SVC in a 138 node HTA departure. Optimization criteria such as losses, installation costs and voltage deviation have been considered and integrated in the NSGA-II algorithm. The algorithms have led to an optimal positioning of a PV system with 1.03MW of power at node 69 and two SVCs of respective powers of 2.07 MVar at node 58 and 2.05 MVar at node 82 of the network. The optimal cost obtained from the simulation is 2,729,000(USD). The NSGA-II algorithm is then a very robust optimization tool, efficient and can be used to optimize electrical grid.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134207690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928895
J. A. Nemours, S. Chowdhury
Fuzzy logic control (FLC) is considered as one of the most effective algorithms for Maximum Power Point Tracking (MPPT) in Photovoltaic (PV) panels and this paper serves to investigate the performance of this algorithm. It describes the step by step modelling of a full PV system with detailed design of the FLC algorithm for the MPPT controller. The model is implemented in MATLAB/Simulink. The PV system with the FLC-based MPPT controller is subjected to uniform and non-uniform changes in weather conditions with an extensive list of test cases including partial shading condition (PSC) and load variation to cater for as many of the realistic weather changes that can happen during the usual operation of PV plants. The simulation results showed that FLC tracked the maximum power point (MPP) to an efficiency of 99% very quickly and with very small oscillations during step changes in irradiance and temperature. However, its performance decreased under non-uniform weather changes. FLC also showed very low efficiency during load variation.
{"title":"Performance Analysis of Fuzzy Logic Maximum Power Point Tracking Scheme for Solar PV System Under Varying Load and Atmospheric Conditions","authors":"J. A. Nemours, S. Chowdhury","doi":"10.1109/PowerAfrica.2019.8928895","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928895","url":null,"abstract":"Fuzzy logic control (FLC) is considered as one of the most effective algorithms for Maximum Power Point Tracking (MPPT) in Photovoltaic (PV) panels and this paper serves to investigate the performance of this algorithm. It describes the step by step modelling of a full PV system with detailed design of the FLC algorithm for the MPPT controller. The model is implemented in MATLAB/Simulink. The PV system with the FLC-based MPPT controller is subjected to uniform and non-uniform changes in weather conditions with an extensive list of test cases including partial shading condition (PSC) and load variation to cater for as many of the realistic weather changes that can happen during the usual operation of PV plants. The simulation results showed that FLC tracked the maximum power point (MPP) to an efficiency of 99% very quickly and with very small oscillations during step changes in irradiance and temperature. However, its performance decreased under non-uniform weather changes. FLC also showed very low efficiency during load variation.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"43 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114130535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928649
P. Chetangny, J. Aredjodoun, S. Houndedako, A. Vianou, D. Chamagne, G. Barbier
This paper presents a method for calculation of eddy current losses in the conductive material such as permanent magnet and aluminum. A quasi-3D analytical model is developed and the results have been compared to an experimental test. A U-cored Electromagnet Device is used to evaluate eddy current losses generated in the conductive material. The analytical method considers only the effect of frequency, current for differents thickness of the conductives materials. The novelty of this work is based on the modeling by electrical equivalent circuit to find the boundary conditions needed and to verify the assumptions made on the current density by FE results, when solving the Maxwell equations.
{"title":"Eddy current losses computation in conductives materials: case of Aluminum and Permanent Magnet-Part I: Frequency and current effects","authors":"P. Chetangny, J. Aredjodoun, S. Houndedako, A. Vianou, D. Chamagne, G. Barbier","doi":"10.1109/PowerAfrica.2019.8928649","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928649","url":null,"abstract":"This paper presents a method for calculation of eddy current losses in the conductive material such as permanent magnet and aluminum. A quasi-3D analytical model is developed and the results have been compared to an experimental test. A U-cored Electromagnet Device is used to evaluate eddy current losses generated in the conductive material. The analytical method considers only the effect of frequency, current for differents thickness of the conductives materials. The novelty of this work is based on the modeling by electrical equivalent circuit to find the boundary conditions needed and to verify the assumptions made on the current density by FE results, when solving the Maxwell equations.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"23 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114106984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-01DOI: 10.1109/PowerAfrica.2019.8928813
R. Opara, K C OKAFOR, D. Dike, G. Chukwudebe, R. Onoshakpor
In the Nigerian deregulated electricity market, competition and economic pricing of electricity in the long term stage is fundamental. A transparent and predictable pricing structure of electricity is also needed to provide useful information to market participants (such as generation companies, transmission companies and customers). The existing methodology for setting electricity tariff using the Multi-year tariff order (MYTO) is perceived to be less efficient in reflecting true cost of electricity and in sending correct price signals. It also relies on long run marginal cost method. Motivated by these concerns, this paper employed a locational marginal pricing (LMP) model that is based on minimizing the cost of supply of electricity to a location when there is an increment in the load clusters. A linear programming approach incorporating DC and AC optimal power flow (OPF) model is carried out. Model implementation was done using the 330kV Nigerian grid network within three-tier cases viz: Case 1- LMP value under normal conditions (No constraint enforcement), Case 2: LMP value considering Congestion/Transmission Limit and Case 3: LMP value considering losses. The result from the three cases considered shows that the LMP varies at various locations owing to transmission congestion constraint and transmission losses while the final total cost of supply of electricity varies. With the removal of fixed charges in the electricity tariff, electricity should be priced based on locations to reflect correct price list to the market stakeholders.
{"title":"Towards Locational Marginal Pricing Model for Nigerian Electricity Tariff Structure using Optimal Power Flow Computation","authors":"R. Opara, K C OKAFOR, D. Dike, G. Chukwudebe, R. Onoshakpor","doi":"10.1109/PowerAfrica.2019.8928813","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928813","url":null,"abstract":"In the Nigerian deregulated electricity market, competition and economic pricing of electricity in the long term stage is fundamental. A transparent and predictable pricing structure of electricity is also needed to provide useful information to market participants (such as generation companies, transmission companies and customers). The existing methodology for setting electricity tariff using the Multi-year tariff order (MYTO) is perceived to be less efficient in reflecting true cost of electricity and in sending correct price signals. It also relies on long run marginal cost method. Motivated by these concerns, this paper employed a locational marginal pricing (LMP) model that is based on minimizing the cost of supply of electricity to a location when there is an increment in the load clusters. A linear programming approach incorporating DC and AC optimal power flow (OPF) model is carried out. Model implementation was done using the 330kV Nigerian grid network within three-tier cases viz: Case 1- LMP value under normal conditions (No constraint enforcement), Case 2: LMP value considering Congestion/Transmission Limit and Case 3: LMP value considering losses. The result from the three cases considered shows that the LMP varies at various locations owing to transmission congestion constraint and transmission losses while the final total cost of supply of electricity varies. With the removal of fixed charges in the electricity tariff, electricity should be priced based on locations to reflect correct price list to the market stakeholders.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128352864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：