Conservation Voltage Reduction Strategy for Autonomous Microgrid with Improved Voltage-CurrentDroop-Based Inverter Control Framework

Table 4

Representation of power saving in IEEE 9 bus test system.

Conventional Q-V droop (V/Var) DG1: 1.7e − 5, DG2: 2e − 4, DG3: 3e − 4, and DG4: 1e − 5						Power saving (in %)
Conventional V-I droop (Ω) DG1: 0.401, DG2: 0.141, DG3: 0.092, and DG4: 0.098
Modified V-I droop (Ω) DG1: 0.421, DG2: 0.216, DG3: 0.164, and DG4: 0.155
Sl. no	Step change in load (s)	Voltage in case of Q-V droop (pu)	Voltage in case of V-I droop (pu)	Apparent power (Q-V droop)	Apparent power (V-I droop)
1	Base load	1.0	0.9	18.5e3	16e3	13.5
2	0.5	0.992	0.917	23.8e3	21.2e3	10.9
3	1.0	0.983	0.926	31e3	27.8e3	10.3
4	1.5	0.979	0.931	37e3	35.5e3	4