Eactive Power/MvarVoltage/kVThe reactive power output from the reactive compensation device00 50 380 395 16:43:24:788 39016:43:25:16:43:25:16:43:26:0 16:43:27:T/sFigure three. Response of Hornsea wind farm to voltage drop of 2 . 400kV bus voltageThe reactive energy output of thereactive compensation device Following the abovementioned, about ten minutes later, lightning caused single50 380 phase grounding fault around the line, along with the Hornsea wind farm oscillated once more and triggered 16:43:25:928 16:43:26:497 16:43:27:097 16:43:24:788 16:43:25:357 large-scale off-grid of wind turbines. Figure 4 depicts the response of Hornsea wind farm T/s throughout the accident [2].Figure three. Response of Hornsea wind farm to voltage drop of two . Figure three. Response of Hornsea wind farm to voltage drop of 2 .1.4 2100 Following the abovementioned, about ten minutes later, lightning triggered singlephase1.two grounding fault on the line, along with the Hornsea bus voltage 1800 35kV wind farm oscillated once again and triggered large-scale off-grid of wind turbines. Figure four depicts the response of Hornsea wind farm 1500 1 throughout the accident [2].Reactive power/MvarActive power/pu Voltage/pu0.1200 Active energy on the Hornsea 1B 35kV bus voltage0.six 1.four 0.4 The reactive power in the 1.2reactive compensation device 0.two 1 0 0.8 0.16:52:33:Active power/pu Voltage/pu900 2100 600 1800 300 1500 0Reactive power/Mvar..16:52:33:16:52:33:700 16:52:33:16:52:33:16:52:33:600 16:52:33:16:52:33:16:52:34:0.0.The reactive power in the reactive compensation device00 Active energy of 900 the Hornsea 1B 00300.T/s16:52:33:Figure4. Figure four.0.4 Solvent violet 9 Epigenetic Reader Domain Improvement from the accident. Development with the accident.16:52:33:490 16:52:33:700 16:52:33:728 16:52:33:16:52:33:600 16:52:33:640 16:52:33:On 9 August 2019 at 16:52, an unbalanced voltage dip as a result of an external event On 9 August 2019 at 16:52, an unbalanced voltage dip as a consequence of an external event ococcurred in the interface point exactly where Hornsea wind farm connects to National Grid’s 400 kV curred in the interface point where Hornsea wind farm connects to National Grid’s 400 Lesogaberan Cancer transmission program. Initially, the offshore wind farm responded as expected by injecting kV transmission system. Initially, the offshore wind farm responded as anticipated by inT/s reactive energy into the grid thereby restoring the voltage back to nominal. Even so, inside the jecting reactive energy into the grid thereby restoring the voltage back to nominal. Howfollowing couple of hundred milliseconds, Figure the following of your accident. as the wind farm’s active energy decreased to cope with ever, in four. Developmentfew hundred milliseconds, because the wind farm’s active energy decreased the voltage dip plus the reactive energy balance inside the wind farm changed, the majority of to cope with the voltage dip as well as the reactive energy balance inside the wind farm changed, the wind turbines 2019 wind farmunbalanced voltage by automatic protection systems. have been disconnected dip due to an external occasion ocOn 9 August within the the majority of the wind at 16:52, an the wind farm were disconnected by automatic proturbines inside the de-load interface point exactly where Hornsea response, due to an curred at thewas caused by an unexpected wind farm control program manage Grid’s 400 tection systems. The de-load was brought on by anwind farm connects to Nationalsystem reunexpected wind farm insufficiently damped electrical resonance within the sub-synchronous frequency variety, by inkV transmission method. Initially, the offshore wind farm responded as anticipated which sponse, due.
