====== Settings on the HMI ====== ===== HMI settings ===== ==== System RTC ==== To set the real time clock ===== System ===== ==== Starting method ==== * Manually\\ - the PCS will NOT start until started manually or remotely. * Auto start after powered\\ - the PCS will start after powered up. ==== Energy dispatching mode ==== there are 2 options * AC dispatch * String dispatch * DC dispatch Refer to [[how_to:dc_dispatch_and_ac_dispatch|DC dispatch and AC dispatch]] for more information In most applications, select **AC dispatch**. For multi-string models, select **String dispatch**. rarely, DC dispatch is supposed to be selected. ===== AC ===== This menu contains all parameters that affects the performance of the AC side of the PCS. Note that depending on the mode selected, the AC side parameters may not take effect, or may not be settable ==== Reactive power regulation mode ==== There are 3 modes supported in regulating reactive power * Constant reactive power\\ - the reactive power will be designated by [[#reactive power setpoint]] directly * Constant PF\\ - the reactive power will be designated by [[#PF setpoint]] and [[#active power setpoint]] * Volt-VAr\\ - the reactive power will be designated by the grid voltage, following the curve made by several [[#Volt-VAr]] (V,Q) points ==== PF setpoint ==== This setpoint will take effect ONLY when [[#Reactive power regulation mode]] is set to **Constant PF** ==== Active power setpoint ==== To regulate the importing and exporting active power of the PCS, MUST be the most important setpoint in PCS ==== Rective power setpoint ==== This setpoint will take effect ONLY when [[#Reactive power regulation mode]] is set to **Constant reactive power** ====Smart Inverter function - Normal ramp rate (RR) ==== If [[#Power change mode]] is set to **ramp**, in normal operation, the power setpoint changes, the actual import/export power will slowly change with this slope setpoint. ====Smart Inverter function - Soft-Start ramp rate (SS) ==== AKA Connect/Reconnect Ramp-up rate Upon starting to inject power into the grid, following a period of inactivity or a disconnection, the inverter will be able to control its rate of increase of power from 1 to 100% maximum current per second. ==== Smart Inverter function - Grid reconnect delay ==== Following a trip, the Smart Inverter must delay re-energization or reconnection for a preset period of time once the voltage and frequency of the grid are within normal ranges. ==== Off-grid voltage regulation ==== This setpoint will tune the off-grid voltage within the range of ±10% of the the rated AC voltage. ==== Active power regulation mode ==== there are 4 modes supported in regulating active power * Constant active power\\ - the active power will be designated by the [[#active power setpoint]] directly * Freq-Watt\\ - the active power will be designated by the [[#active power setpoint]] when frequency is in normal range, once the frequency rises beyond the range, the active power will reduce with the Freq-Watt slope * Volt-Watt\\ - the active power will be designated by the [[#active power setpoint]] when voltage is in normal range, once the voltage rises beyond the range, the active power will reduce with the Volt-Watt slope * Freq-Watt and Volt-Watt\\ - the active power will be designated by the [[#active power setpoint]] when both frequency or voltage is in normal range, once the voltage or frequency rises beyond the range, the active power will reduce with the Frequency-Watt and Volt-Watt slope, but frequency will be priory. ==== Power change mode ==== there are 2 modes * Step\\ - the power will change instantly when setpoint is changed, suitable for applications such as frequency regulation * Ramp\\ - the power will change linearly with the [[#normal ramp rate]] when setpoint is changed. ====Smart Inverter function - F/VRT ==== Disable or enable F/VRT (Frequency Ride-through and Voltage Ride-through) functions ====Smart Inverter function - Anti-islanding==== By enabling this option, the anti-islanding function will be activated ==== Off-grid power starting ==== There are 2 options * Step\\ - the PCS will generate the AC voltage instantly when it's started * Soft-Start\\ - when it's started, the PCS will close AC relays, and then generate the AC voltage slowly, to avoid potential inrush current. If the PCS trips after off-grid starting, worth a try on this option. ===== DC ===== This menu contains all parameters that affects the performance of the DC side of the PCS. Note that depending on the mode selected, the DC side parameters may not take effect, or may not be settable ==== Subsystem ==== The Sinexcel PCS are classed with different types * Standard one string, which has only one DC string * Multi-string, which has multiple DC strings, mostly one module is connected to one battery string We call each string subsystem. ==== DC operation mode ==== there are 2 modes in this option * Constant power\\ the PCS will import/export designated DC power, ignoring the AC power setpoints * Constant current\\ the PCS will import/export designated DC current if SOC supports, ignoring the AC power setpoints both of the two options take effect ONLY when [[#Energy dispatching mode]] is set to DC dispatch ====Dis-/charge current setpoint==== The PCS will import/export the power at DC side, according to this setpoint This setpoint takes effect ONLY when [[#Energy dispatching mode]] is set to **DC dispatch**, and [[#DC operation mode]] is set to** Constant current** ====Dis-/charge power setpoint==== The PCS will import/export the power at DC side, according to this setpoint This setpoint takes effect ONLY when [[#Energy dispatching mode]] is set to **DC dispatch**, and [[#DC operation mode]] is set to** Constant power** ==== Lower limit voltage of battery ==== This is the secondary under-voltage criterion. If the voltage reaches this threshold, it's critical for the ESS. the EMS must consider charging the battery at this moment. Usually this threshold should be set 5~10V lower than [[#end of discharge voltage]] ==== Float charge voltage ==== A legacy setpoint for lead-acid battery. If you are using lithium-ion battery, this setpoint MUST be the same as [[#topping charge voltage]] ==== Topping charge voltage ==== refer to this article [[definition:battery_dis-_charge_sequence]] For lithium ion batteries, the PCS will stop charging the battery when the DC voltage reaches [[#topping charge voltage]], AND the DC current reduces to [[#end of charge current]] ==== Max. charge current (DC) ==== The battery charging current (DC) will never be more than this threshold ==== Max. discharge current (DC) ==== The battery discharging current (DC) will never be more than this threshold ==== Start of discharge voltage ==== ==== End of discharge voltage ==== If the PCS is discharging, once the voltage reaches this criteria, the PCS will stop and refuse to discharge. ==== Precharge voltage (legacy) ==== A legacy setpoint for lead-acid battery. If you are using lithium-ion battery, ignore this option ==== Precharge time (legacy)==== Another legacy setpoint for lead-acid battery. If you are using lithium-ion battery, ignore this option ==== End of charge current ==== When the battery is charged as the voltage is almost reaching [[#topping charge voltage]], the current will reduce. Once the current drops to this threshold, the PCS will stop charging the battery. ===== Updating =====