AC Transmission Emulation Control Strategy in VSC-HVDC systems: general criteria for optimal tuning of control system

AC Transmission Emulation Control Strategy is a promising way to control the ordered active power flow in a VSC-HVDC system as a function of the phase angle over the parallel AC interconnection. The main advantage of this strategy is that no direct operator active power set-point dispatch is needed: HVDC interconnection basically behaves like an alternating current (AC) transmission line characterized by a proper impedance. Despite the high-level control strategy seems relatively simple the choice of an appropriate set of parameters is essential in order to preserve system stability on wide and appropriate grid support in N-1 condition. In light of this need, the paper introduces general criteria to follow for optimal tuning of VSC-HVDC control system in AC Transmission Emulation Control mode. It can be considered as a general methodology that can assist TSO in selecting those parameters of VSC-HVDC control system in AC Transmission Emulation Control mode which mainly affect the HVDCs behaviour in the interconnected power systems.

[1]  Yong Chen,et al.  Improving the grid power quality using virtual synchronous machines , 2011, 2011 International Conference on Power Engineering, Energy and Electrical Drives.

[2]  F. Blaabjerg,et al.  Synchronverter-based operation of STATCOM to Mimic Synchronous Condensers , 2012, 2012 7th IEEE Conference on Industrial Electronics and Applications (ICIEA).

[3]  A. E. Hammad,et al.  Improving the dynamic performance of a complex AC/DC system by HVDC control modifications , 1990 .

[4]  H.-P. Beck,et al.  Virtual synchronous machine , 2007, 2007 9th International Conference on Electrical Power Quality and Utilisation.

[5]  Qing-Chang Zhong,et al.  Synchronverters: Inverters That Mimic Synchronous Generators , 2011, IEEE Transactions on Industrial Electronics.

[6]  Tuan Le,et al.  An Overview Introduction of VSC-HVDC: State-of-art and Potential Applications in Electric Power Systems , 2011 .

[7]  M. Torres,et al.  Frequency control improvement in an autonomous power system: An application of virtual synchronous machines , 2011, 8th International Conference on Power Electronics - ECCE Asia.

[8]  J. Driesen,et al.  Virtual synchronous generators , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[9]  Hans-Peter Nee,et al.  Power-Synchronization Control of Grid-Connected Voltage-Source Converters , 2010, IEEE Transactions on Power Systems.

[10]  N. Rostamkolai,et al.  An adaptive optimal control strategy for dynamic stability enhancement of AC/DC power systems , 1988 .

[11]  Shuhui Li,et al.  Control of HVDC Light System Using Conventional and Direct Current Vector Control Approaches , 2010, IEEE Transactions on Power Electronics.

[12]  Khadija Ben Kilani,et al.  Synchronverter-Based Emulation and Control of HVDC Transmission , 2016, IEEE Transactions on Power Systems.

[13]  P. Kundur,et al.  Power system stability and control , 1994 .

[14]  Mehrdad Ghandhari,et al.  Improvement of power system stability by using a VSC-HVdc ☆ , 2011 .

[15]  D. Lauria,et al.  Real-time tracking of electromechanical oscillations in ENTSO-e Continental European Synchronous Area , 2015 .

[16]  Jiuping Pan,et al.  AC Grid with Embedded VSC-HVDC for Secure and Efficient Power Delivery , 2008, 2008 IEEE Energy 2030 Conference.