OS4ES – Open System for Energy Services

2015 ◽  
Vol 63 (11) ◽  
Author(s):  
Martin Zanner ◽  
Andrea Schröder ◽  
Christoph Kahlen
Keyword(s):  
Open System ◽  
Distribution System ◽  
Service System ◽  
Field Tests ◽  
Electrical Energy ◽  
Congestion Management ◽  
Management Service ◽  
Energy Services ◽  
Open Service ◽  
Reliability And Robustness

AbstractToday, mass presence of distributed energy resources (DERs) connected to the grid is often seen as having adverse effects on grid reliability and robustness. The apprehension is that it complicates or even compromises network management by distribution system operators (DSOs).The central aim of the Open System for Energy Services (OS4ES) project is to provide a solution that closes the current information, communication and cooperation gap between DERs and energy market actors. To this end, the OS4ES project delivers an innovative Open Service System that enables dynamic cooperation between these two parties. A Distributed Registry for DERs offers to involved actors the opportunity to reserve the aggregated flexibility of DERs as a grid management service in order to improve Smart Grid robustness and reliability. OS4ES will be based on standardized and interoperable communication interfaces, as well as generic interfaces among components producing, consuming or storing electrical energy.The OS4ES Open Service System includes laboratory and field tests under different service scenarios such as congestion management, energy trading, imbalance risk reduction and Volt/VAR optimization. An OS4ES User Group has been established to allow interested parties to gain a broader insight in the project and to actively contribute to the work packages of interest. Besides, standardization proposals will be prepared and submitted to the respective standardization committees.

scholarly journals Grid Study of Mini Hydro Power Plant (MHPP) of Palangai Hulu 2x4,9 MW South Pesisir

2018 ◽  
Vol 248 ◽  
pp. 02003
Author(s):  
Hidayat ◽  
Cahayahati ◽  
Arnita ◽  
Saiful Jamaan
Keyword(s):  
Distribution System ◽  
Negative Impact ◽  
Legal Aspect ◽  
Electrical Energy ◽  
Legal Aspects ◽  
Technical Aspect ◽  
Hydro Power ◽  
Selling Point ◽  
The Cost ◽  
Operational Impact

This paper presents a gridd study of Mini Hydro Power Generation (MHPP) of Palangai Hulu, 2 x 4.9 MW. It is owned by PT. Dempo Sumber Energi (DSE) located at Palangai of South Pesisir Regency. The objective is to fulfill the legal aspects, technical aspects and economic aspects to develop of MHPP. The legal aspect is one of the requirements that must be fulfilled prior to the signing of Power Purchase Agreement (PPA) between DSE and State Electricity Company that called PLN. Technical aspect is to analyze the operational impact of the distribution system after MHPP connecting to the PLN distribution system, while the economic aspect is to analyze how much result energy of MHPP can be absorbed by PLN. Uultimately, it is described the financial feasibility of MHPP. The result is, legal aspect of development of MHPP of Palangai Hulu feasible to be continued to next process to sign contract of PPA. Technically, there is no negative impact of operating the PLN distribution system after the MHPP is connected to the PLN Rayon Balai Selasa system that analyzes using ETAP. Point of Connection (POC) as the selling point of electrical energy by DSE to the most economical PLN is on substation circuit of Balai Selasa. The energy production of MHPP Palangai Hulu can be absorbed 96.4% starting in 2018. The cost of POC is Rp. 11,577,000,000.

scholarly journals Sparse Measurement-Based Coordination of Electric Vehicle Charging Stations to Manage Congestions in Low Voltage Grids

Smart Cities ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 17-40
Author(s):  
Daniel-Leon Schultis
Keyword(s):  
Electric Vehicle ◽  
Distribution System ◽  
Low Voltage ◽  
Congestion Management ◽  
Load Flow ◽  
Detection Accuracy ◽  
System State ◽  
Electric Vehicle Charging ◽  
Vehicle Charging ◽  
Charging Stations

The increasing use of distributed generation and electric vehicle charging stations provokes violations of the operational limits in low voltage grids. The mitigation of voltage limit violations is addressed by Volt/var control strategies, while thermal overload is avoided by using congestion management. Congestions in low voltage grids can be managed by coordinating the active power contributions of the connected elements. As a prerequisite, the system state must be carefully observed. This study presents and investigates a method for the sparse measurement-based detection of feeder congestions that bypasses the major hurdles of distribution system state estimation. Furthermore, the developed method is used to enable congestion management by the centralized coordination of the distributed electric vehicle charging stations. Different algorithms are presented and tested by conducting load flow simulations on a real urban low voltage grid for several scenarios. Results show that the proposed method reliably detects all congestions, but in some cases, overloads are detected when none are present. A minimal detection accuracy of 73.07% is found across all simulations. The coordination algorithms react to detected congestions by reducing the power consumption of the corresponding charging stations. When properly designed, this strategy avoids congestions reliably but conservatively. Unnecessary reduction of the charging power may occur. In total, the presented solution offers an acceptable performance while requiring low implementation effort; no complex adaptations are required after grid reinforcement and expansion.

scholarly journals PEMINDAHAN TAPING FASA UNTUK PENYEIMBANGAN BEBAN PADA JARINGAN 3 FASA DENGAN MENDETEKSI ARUS NETRAL BERBASIS ARDUINO MEGA 2560

2017 ◽  
Vol 19 (2) ◽  
pp. 1
Author(s):  
Pandu Wicaksana ◽  
Saiful Manan
Keyword(s):  
Load Balancing ◽  
Distribution System ◽  
Electrical Energy ◽  
Electric Power System ◽  
Current Output ◽  
Before And After ◽  
Neutral Flow ◽  
Unbalanced Load ◽  
Current Value ◽  
Quality Of Electrical Energy

Pandu Wicaksana, Saiful Manan, in this paper explain that the load balance on the 3 phase 4 wire distribution system is very important. Continuous load imbalances can cause a decrease in the reliability of the electric power system and the quality of electrical energy. One consequence of an unbalanced load is the presence of a current flowing in a neutral introduction. The purpose of this study is to find out and analyze the current in a neutral conductor when the load conditions are unbalanced and when balanced. Load balancing is done by manual-remote, which means that the transfer of taping at a load is done by pressing the button that has been integrated with the HMI display. This software is also responsible for displaying current output from the sensor. That way, it can be seen that the current value of the neutral conductor before and after load balancing is done. That the current value of the neutral conductor will be smaller when the load is balanced compared to when the load between phases is not balanced. Keywords: Unbalanced Load, Neutral Flow, SCADA, load balancingReferencesUtami ,Purwanti Bekti. 2016. Studi Kasus Ketidakseimbangan Beban Dengan Perubahan Taping 1 Fasa Pada Penyulang Kalisari 05 Pt. Pln (Persero) Rayon Semarang Tengah. Tugas Akhir Tidak Terpublikasi. Semarang: Universitas Diponegoro.Desiana, Catur. 2015. Perhitungan Susut Daya Listrik dan Simulasi Software ETAP 12.6.0 GunaMenjaga Mutu Tegangan di DaerahSawah Besar Raya Kaligawe Penyulang PDL.13 PT.PLN (Persero) Rayon Semarang Timur.Tugas Akhir Tidak Terpublikasi. Semarang: Universitas DiponegoroGhani, Reza Muhammad. 2016. Alat Pendeteksi Terputusnya Aliran Listrik Pada Jaringan Tegangan Menengah Satu Fasa Menggunakan Arduino Mega 2560 Dengan Memanfaatkan Aplikasi Web. Tugas Akhir Tidak Terpublikasi. Semarang: Universitas Diponegoro.Arduino & Genuino Products. Arduino MEGA 2560 & Genuino MEGA2560. https://www.arduino.cc/en/Main/arduinoBoardMega2560. Diakses tanggal 26 Juni 2017.

scholarly journals Modelling Selected Parameters of Power Grid Network in the South-Eastern Part of Poland: The Case Study

Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 239
Author(s):  
Piotr Hadaj ◽  
Dominik Strzałka
Keyword(s):  
Distribution System ◽  
Fault Tolerant ◽  
Real Data ◽  
Electrical Energy ◽  
Vertex Degree ◽  
Clustering Coefficient ◽  
Network Efficiency ◽  
Graph Diameter ◽  
Graph Parameters

In this paper, a case study is conducted based on the real data obtained from the local Distribution System Operator (DSO) of electrical energy. The analyzed network represents connections and high-voltage switchgears of 110 kV. Selected graph parameters—vertex degree distribution, the average vertex degree, the graph density, network efficiency, the clustering coefficient, the average path length, and the graph diameter were examined, taking into account that in the analysis, some nodes were removed due to the different failures. For each failure, the possible effects on network parameters were tested. As a final result, it was shown that in the analyzed case, the removal of only five nodes could cause a significant (almost four times) fall of graph efficiency. In turn, this means that the whole analyzed network cannot be considered as a fault-tolerant.

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