Coordinate control strategy for stability operation of offshore wind farm integrated with Diode-rectifier HVDC

Xie, Lei; Yao, Liangzhong; Cheng, Fan; Li, Yan; Shu, Liang

doi:10.1016/j.gloei.2020.07.002

Cited by 9 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the receiving end converter operates as a DC current source and the SCU operates as a DC voltage source, the system shows different characteristics once an onshore fault occurs [29]. The DC voltage of the HVDC link will remain almost unchanged during the AC fault.…”

Section: Receiving End Ac Faultmentioning

confidence: 99%

Control Strategy for Offshore Wind Farms with DC Collection System Based on Series-Connected Diode Rectifier

Xie

Cheng²,

2022

Sustainability

Self Cite

View full text Add to dashboard Cite

The DR-HVDC (Diode rectifier-based HVDC) transmission topology was recently proposed for integration on large offshore wind farms due to its low investment cost and high reliability. To further reduce the investment, a DC collection topology based on the series-connected diode rectifiers (DR) is proposed, where no offshore platform is needed. However, units of series-connected topology (SCU) show coupling issues, such as overvoltage, energy curtailment, and fault isolation. First, the coupling mechanism is analyzed, and a suitable operation mode for SCUs is selected to ensure the safe operation of the DC system. Then, the linear relationship of active power and output DC current and DC voltage of SCUs is analyzed, and a novel coordinate control strategy for DC wind farms is proposed, where an onshore converter adapts a DC current controller and wind turbines adapt a mediate output voltage control strategy. The mediate output voltage control strategy includes a triple loop with power loop, mediate output voltage loop, and current loop. Also, the DC open line fault, DC grounding fault, and AC grounding fault of the onshore grid are investigated, and a protection strategy is proposed. A 160 MW wind farm with a DR-SCU DC collection system is built in PSCAD/EMTDC to verify the validity of the proposed control strategy under unequal wind speeds, DC fault, and onshore AC fault, and the results validate the performance of the proposed strategy.

show abstract

Section: Receiving End Ac Faultmentioning

confidence: 99%

Control Strategy for Offshore Wind Farms with DC Collection System Based on Series-Connected Diode Rectifier

Xie

Cheng²,

2022

Sustainability

Self Cite

View full text Add to dashboard Cite

show abstract

“…Converters are commonly employed in power production systems that utilize renewable energy sources, including wind turbines (Xie et al, 2020;Bernal-Perez, Añó-Villalba and Blasco-Gimenez, 2021;Achitaev et al, 2024), ocean energy (Wang et al, 2023), solar power plants (Buzzio et al, 2023;Ingilala and Vairavasundaram, 2023), Nanogrid (Sun et al, 2022;Samiullah et al, 2023), micro-grids (Estabragh, Dastfan and Rahimiyan, 2021;Aryani et al, 2022;Heidari, Hatami and Eskandari, 2022;Molaee, Rokrok and Doostizadeh, 2022), energy harvesting systems (Yang, Pian and Liu, 2019;Eguchi et al, 2020Eguchi et al, , 2021Silveira et al, 2023), energy storage (Silveira et al, 2021;Li et al, 2022), specific instances in electric vehicles (Turksoy, Yilmaz and Teke, 2021;Delcy et al, 2022;Nahin et al, 2022;Seyezhai et al, 2022), and various other applications.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of a Rectifier Performance in Power Generation Applications

Sri Agustina,

Wahab,

Djulil Amri

et al. 2024

ASIIMETRIK

View full text Add to dashboard Cite

Electrical energy's significance is critical to human life, as seen by the rising usage of this resource. Electricity-consuming machinery and technology are developing at an accelerating rate. A substantial electrical power supply is required to achieve these requirements. An effective method to address this issue is to use a generator set powered by an electric motor. This generator necessitates the use of a converter, which serves the purpose of transforming alternating waves (AC) into direct waves (DC), generally referred to as a rectifier. The rectifier's unsatisfactory performance necessitates the need for this research, which seeks to develop and construct a rectifier and subsequently compare its performance utilizing two distinct current sources. Rectifier performance is obtained through the utilization of direct computation and measuring methods. Two sources charge the battery: direct current from the motor and alternating current from the power grid. According to the test results, the converter using an electric power plant source had a higher current value. On the generator, the battery charges up to 13.4 volts in 55 minutes, which is 5 minutes quicker than on the PLN source.

show abstract

“…HVDC is an emerging technology applicable to offshore wind farms with large capacities and at long distances from the coast. In addition, HVDC can improve power system stability and electrical power quality and reduce transmission losses [2][3][4][5][6][7]. HVDC technology for offshore wind farms requires the use of an offshore converter platform.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response Analysis of an Offshore Converter Platform with Valve Towers under Seismic Excitation

Sun

Zhao

et al. 2022

Symmetry

View full text Add to dashboard Cite

Converter valves are the core equipment of offshore wind power structures. However, they are highly vulnerable to vibration under strong earthquakes, which will affect normal operation of the offshore wind farm. Converter station is an axisymmetric structure with obvious asymmetry in its internal configuration of the superstructure. This study aimed to analyze the dynamic response of a supported converter valve in an offshore converter station under seismic excitation. The coupling model of the supported valve tower group and the converter station were established, and the distribution law of the valve tower dynamic response and foundation settlement were investigated. The dynamic response effect of the modal truncation, valve tower stiffness, and basic size on different areas and foundations of the valve towers were studied. The findings were as follows: (i) the effect of local vibration of the valve tower should not be simplified by using equivalent mass and node condensation; (ii) the structure–equipment coupling analysis method should be used to review the structural design scheme of the offshore converter station in the intensity VII region; (iii) the vertical higher-order modes should be considered during the vibration response calculation and its participation ratio in mass should not be lower than 90%; (iv) the frequency range that minimizes the vibration response is the characteristic frequency range of horizontal vibration, while the best vibration suppression effect cannot be obtained in both the horizontal and vertical directions; and (v) the stiffness of the valve tower itself should be adjusted and different stiffness designs of the valve tower in different positions should be adopted to realize effective vibration response control.

show abstract

Coordinate control strategy for stability operation of offshore wind farm integrated with Diode-rectifier HVDC

Cited by 9 publications

References 22 publications

Control Strategy for Offshore Wind Farms with DC Collection System Based on Series-Connected Diode Rectifier

Control Strategy for Offshore Wind Farms with DC Collection System Based on Series-Connected Diode Rectifier

Comparative Analysis of a Rectifier Performance in Power Generation Applications

Dynamic Response Analysis of an Offshore Converter Platform with Valve Towers under Seismic Excitation

Contact Info

Product

Resources

About