1. FERC Order No. 819: Third-Party Provision of Primary Frequency Response Service. (2015)
2. ENTSO-E, Network Code for Requirements for Grid Connection Applicable to all Generators, (2013)
3. Al Riyami, H.A.S., et al.: Grid code compliance for integrating 50 MW wind farm into Dhofar power grid. In: Proceedings of the 12th GCC Cigre International Conference for Electrical Equipment, GCC Power, pp. 152–161, 8–10 November (2016)
4. Liu, Y., Jiang, L., Smith, J.S., Wu, Q.H.: Primary frequency control of DFIG-WTs using bang-bang phase angle controller. IET Gen. Trans. Dis. 12(11), 2670–2678 (2018)
5. Arani, M.F.M., El-Saadany, E.F.: Implementing virtual inertia in DFIG-based wind power generation. IEEE Trans. Power Syst. 28(2), 1373–1384 (2013)