Research on Transient Overvoltage Suppression Measures for Photovoltaics Connected to the DC Sending End in the Smart Power System for Industry 4.0

Table 1

Control parameter optimization value.

Control parameters	Optimized value
ULV	0.9 p.u.
Kqv_LV	1.5 p.u.
Ip_LV
Kdp	3.0 p.u./s
UHV	1.1 p.u.
Kqv_HV	1.5 p.u.
Ip_HV

is the active current of the photovoltaic station before the failure of DC commutation; is the active power of photovoltaic station before DC commutation failure.