SOFAR Cloud
User Manual for SOFAR models including: 250KTL-HV, 250KTL-HV Grid Tied Inverter, 250KTL-HV, Grid Tied Inverter, Tied Inverter, Inverter
23 mai 2024 — The adjustable range of power factor PF is 0.8 to 1, -1 to -0.8. After the fixed power factor is set, the reactive power is calculated according to the ...10 pages
26 mag 2024 — The adjustable range of power factor PF is 0.8 to 1, -1 to -0.8. After the fixed power factor is set, the reactive power is calculated according to the ...
The reactive mode from 1 to 4 are for installation personnel, 5 to 6 are for professionals or engineers. Take the PV inverter of SOFAR 250KTL-HV for example. 2.
File Info : application/pdf, 10 Pages, 1,021.33KB
DocumentDocumentSOFAR Reactive Power Modes User Manual SOFAR reactive power modes 1. Introduction The inverter can support the grid by providing reactive power in 6 different modes by using SOFAR Cloud APP or other SOFAR official APP. The reactive mode from 1 to 4 are for installation personnel, 5 to 6 are for professionals or engineers. Take the PV inverter of SOFAR 250KTL-HV for example. 2. Reactive mode I: reactive power regulation through fixed power factor The adjustable range of power factor PF is 0.8 to 1, -1 to -0.8. After the fixed power factor is set, the reactive power is calculated according to the current active power. The shaded part of the figure below shows the reactive power calculated from the fixed power factor and active power: Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual Below is the operation interface of the APP. 3. Reactive mode II: reactive power regulation through fixed reactive power percentage The adjustable range of reactive power percentage is -100% to 100%. In this mode, set a fixed reactive power percentage, and the system will calculate the power factor angle according to the set reactive power percentage, and then calculate the corresponding reactive power according to the current active power. For example, the rated active power of sofar 250ktl-hv is 250KW. If the reactive power percentage is set to 40%, the reactive power output is 250 * 40%= 100kvar. Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual Below is the operation interface of the APP. 4. Reactive mode 3: the reactive power of inverter will follow the change of active power By setting the four level active power load reduction point, the reactive power is calculated according to the power factor corresponding to the set active power. When the active power changes, the corresponding reactive power also changes. The corresponding relationship between active power and power factor is shown in the figure: Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual Parameter Explain Range P_P1 Cos (P) Output active power at point p1 on the Optional mode curve P_P2 Cos (P) Output active power at point P2 on the Optional mode curve P_P3 Cos (P) Output active power at point P3 on the Optional mode curve P_P4 Cos (P) Output active power at point P4 on the Optional mode curve Cos_P1 Cos (P) Power factor angle at point p1 on the 0.8~1 mode curve Cos_P2 Cos (P) Power factor angle at point p2 on the 0.8~1 mode curve Cos_P3 Cos (P) Power factor angle at point p3 on the -1~-0.8 mode curve Cos_P4 Cos (P) Power factor angle at point p4 on the -1~-0.8 mode curve Sgn(Cos)_P1 Cos (P)Symbol of the power factor angle at point leading p1 on the mode curve Sgn(Cos)_P2 Cos (P)Symbol of the power factor angle at point leading p2 on the mode curve Sgn(Cos)_P3 Cos (P)Symbol of the power factor angle at point lagging p3 on the mode curve Sgn(Cos)_P4 Cos (P)Symbol of the power factor angle at point lagging p4 on the mode curve Note: this mode has a voltage entry enable bit. If it is enabled, it is necessary to set the lockinv voltage percentage and lockoutv voltage percentage. When the grid voltage percentage is greater than the lockinv voltage percentage, this mode is normally enabled; When the grid voltage percentage is less than the lockoutv voltage percentage, the reactive power is 0. Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual Below is the operation interface of the APP. Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual 5. Reactive mode 4: inverter reactive power continuously changes with grid voltage The reactive power is adjusted by setting the high-voltage starting point, high-voltage ending point, low-voltage starting point and low-voltage ending point of the grid voltage, in which the grid voltage changes continuously. The following figure shows the relationship between reactive power and grid voltage: Parameter Explain Range P1 P1 on the Q (U) mode curve is the starting voltage Optional point of low voltage P2 P2 on the Q (U) mode curve is the starting voltage Optional point of low voltage P3 P3 on the Q (U) mode curve is the starting voltage Optional point of low voltage P4 P4 on the Q (U) mode curve is the starting voltage Optional point of low voltage Note: this mode has a voltage entry enable bit. If it is enabled, it is necessary to set the lockinv voltage percentage and lockoutv voltage percentage. When the grid voltage percentage is greater than the lockinv voltage percentage, this mode is normally enabled; When the grid voltage percentage is less than the lockoutv voltage percentage, the reactive power is 0. (response waiting time during detection can be set) Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual Among them, the reactive power at point P1 is the maximum lagging reactive power, the reactive power at point P2 is the reactive power at the low voltage starting voltage point, the reactive power at point P3 is the reactive power at the high voltage starting voltage point, and the reactive power at point P4 is the maximum leading reactive power. Below is the operation interface of the APP. Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual 6. Reactive mode 5: inverter reactive power continuously changes with grid voltage The reactive power is adjusted by setting the high-voltage starting point, high-voltage ending point, low-voltage starting point and low-voltage ending point of the grid voltage, in which the grid voltage changes step by step. The following figure shows the relationship between reactive power and grid voltage: Parameter Explain Range P1 P1 on the Q (U) mode curve is the starting voltage Optional point of low voltage P2 P2 on the Q (U) mode curve is the starting voltage Optional point of low voltage P3 P3 on the Q (U) mode curve is the starting voltage Optional point of low voltage P4 P4 on the Q (U) mode curve is the starting voltage Optional point of low voltage Note: this mode has a voltage entry enable bit. If it is enabled, it is necessary to set the lockinv voltage percentage and lockoutv voltage percentage. When the grid voltage percentage is greater than the lockinv voltage percentage, this mode is normally enabled; When the grid voltage percentage is less than the lockoutv voltage percentage, the reactive power is 0. (response waiting time during detection can be set) Among them, the reactive power corresponding to P1 and P4 points is the maximum reactive power point. (both can be set by self selection) Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual Below is the operation interface of the APP. 7. Reactive mode 6: the inverter calculates the current output reactive power through constant apparent power That is, when the active power does not reach the rated value, the reactive power is calculated according to the rated apparent power, and the calculation formula is; When the active power reaches the rated value, the reactive power is 0. Note: phase type can be set: 1 Zero reactive power: reactive power is 0; 2. lagging reactive power: reactive power is negative; 3. leading reactive power: the reactive power is positive. Copyright © Shenzhen SOFARSOLAR Co., Ltd SOFAR Reactive Power Modes User Manual Below is the operation interface of the APP. 8. Download APP https://www.sofarsolar.com/cloud.html Copyright © Shenzhen SOFARSOLAR Co., Ltd