scholarly journals Reliability and Economic Evaluation of High Voltage Direct Current interconnectors for large-scale renewable energy integration and transmission

2019 ◽  
Author(s):  
A. Thompson ◽  
B. Kazemtabrizi ◽  
C.J. Crabtree ◽  
C. Dao ◽  
F. Dinmohamadi ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Economic Evaluation ◽  
High Voltage ◽  
Direct Current ◽  
Large Scale ◽  
Energy Integration ◽  
Renewable Energy Integration ◽  
High Voltage Direct Current

scholarly journals Analysis of Propagation Delay for Multi-Terminal High Voltage Direct Current Networks Interconnecting the Large-Scale Off-Shore Renewable Energy

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 2115 ◽  
Author(s):  
Muhammad Nadeem ◽  
Xiaodong Zheng ◽  
Nengling Tai ◽  
Mehr Gul ◽  
Sohaib Tahir
Keyword(s):  
Renewable Energy ◽  
High Voltage ◽  
Direct Current ◽  
Computer Aided Design ◽  
Large Scale ◽  
Renewable Energy Sources ◽  
Propagation Delay ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
High Voltage Direct Current

Voltage-source-converter-based multi-terminal high voltage direct current (MTDC) networks are extensively recognized as a viable solution for meeting the increasing demand of electrical energy and escalating penetration of renewable energy sources. DC faults are major limitations to the development of MTDC networks. The analysis of variable constraints has become mandatory in order to develop a reliable protection scheme. This paper contributes in assessing the propagation delay with the analytical approximation in MTDC networks. The propagation delay is analyzed in the time domain by taking only the forward traveling wave into account and considering the initial voltage step of magnitude at the fault position. Numerous simulations were carried out for different parameters and arrangements in Power System Computer Aided Design (PSCAD) to explore the proposed expressions. The results accurately depicted the time development of fault current. The results obtained from the real-time digital simulator (RTDS) confirmed that the proposed approach is capable of evaluating propagation delay in MTDC networks. Moreover, the influence of fault resistance is also taken into account for investigating its effect on the system parameters.

scholarly journals Analysis of Subsynchronous Torsional of Wind–Thermal Bundled System Transmitted via HVDC Based on Signal Injection Method

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 474
Author(s):  
Junxi Wang ◽  
Qi Jia ◽  
Gangui Yan ◽  
Kan Liu ◽  
Dan Wang
Keyword(s):  
Wind Power ◽  
High Voltage ◽  
Direct Current ◽  
Computer Aided Design ◽  
Large Scale ◽  
Electromagnetic Transients ◽  
Torsional Mode ◽  
High Voltage Direct Current ◽  
Operation Conditions ◽  
Signal Injection

With the development of large-scale new energy, the wind–thermal bundled system transmitted via high-voltage direct current (HVDC) has become the main method to solve the problem of wind power consumption. At the same time, the problem of subsynchronous oscillation among wind power generators, high-voltage direct current (HVDC), and synchronous generators (SGs) has become increasingly prominent. According to the dynamic interaction among doubly fed induction generators (DFIGs), HVDC, and SGs, a linearization model of DFIGs and SGs transmitted via HVDC is established, and the influence of the electromagnetic transient of wind turbines and HVDC on the electromechanical transient processes of SGs is studied. Using the method of additional excitation signal injection, the influence of the main factors of DFIG on the damping characteristics of each torsional mode of SG is analyzed, including control parameters and operation conditions when the capacity of HVDC is fixed. The mechanism of the negative damping torsional of SGs is identified. A time-domain simulation model is built in Electromagnetic Transients including DC/Power Systems Computer Aided Design (EMTDC/PSCAD) to verify the correctness and effectiveness of the theoretical analysis.

scholarly journals Large Scale Renewable Energy Integration: Issues and Solutions

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1996 ◽  
Author(s):  
G. V. Brahmendra Kumar ◽  
Ratnam Kamala Sarojini ◽  
K. Palanisamy ◽  
Sanjeevikumar Padmanaban ◽  
Jens Bo Holm-Nielsen
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Renewable Energy Sources ◽  
Frequency Variation ◽  
Energy Integration ◽  
Renewable Energy Integration ◽  
Safety Issues ◽  
Additional Strain ◽  
The Stability ◽  
Stability Issues

In recent years, many applications have been developed for the integration of renewable energy sources (RES) into the grid in order to satisfy the demand requirement of a clean and reliable electricity generation. Increasing the number of RES creates uncertainty in load and power supply generation, which also presents an additional strain on the system. These uncertainties will affect the voltage and frequency variation, stability, protection, and safety issues at fault levels. RES present non-linear characteristics, which requires effective coordination control methods. This paper presents the stability issues and solutions associated with the integration of RES within the grid.

scholarly journals Flexibility requirement for large-scale renewable energy integration in Indian power system: Technology, policy and modeling options

2020 ◽  
Vol 29 ◽  
pp. 100482 ◽  
Author(s):  
Partha Das ◽  
Parul Mathuria ◽  
Rohit Bhakar ◽  
Jyotirmay Mathur ◽  
Amit Kanudia ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Large Scale ◽  
Technology Policy ◽  
Energy Integration ◽  
System Technology ◽  
Renewable Energy Integration

scholarly journals Quantifying the flexibility of hydrogen production systems to support large-scale renewable energy integration

2018 ◽  
Vol 399 ◽  
pp. 383-391 ◽  
Author(s):  
Dai Wang ◽  
Matteo Muratori ◽  
Joshua Eichman ◽  
Max Wei ◽  
Samveg Saxena ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Hydrogen Production ◽  
Large Scale ◽  
Production Systems ◽  
Energy Integration ◽  
Renewable Energy Integration
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