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SUN2000-(50KTL, 60KTL, 65KTL)-M0 User Manual

This document describes the SUN2000-50KTL-M0, SUN2000-60KTL-M0 and SUN2000-65KTL-M0 in terms of its installation, electrical connections, commissioning, maintenance, and troubleshooting.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Operations Related to the Advanced User

Operations Related to the Advanced User

If you log in to the app as Advanced User, you can set grid parameters, protection parameters, and feature parameters for the SUN2000.

Setting Grid Parameters

Procedure

  1. Tap Function Menu > Settings > Grid Parameters to access the parameters setting screen.

    Figure 7-2 Grid parameters (advanced user)

Parameter List

No.

Parameter

Description

1

Grid code

Set this parameter based on the grid code of the country or region where the SUN2000 is used and the SUN2000 application scenario.

2

Isolation

Specifies the working mode of the SUN2000 according to the grounding status at the DC side and the connection status to the grid.

Setting Protect Parameters

Procedure

  1. Choose Function Menu > Settings > Protect Parameters to access the settings screen.

    Figure 7-3 Protect parameters (advanced user)

Parameter List

Parameter

Description

Insulation resistance protection (MΩ)

To ensure device safety, the SUN2000 detects the insulation resistance between the input side and the ground when it starts a self-check. If the detected value is less than the preset value, the SUN2000 does not export power to the power grid.

Setting Feature Parameters

Procedure

  1. Choose Function Menu > Settings > Feature Parameters to access the settings screen.

    Figure 7-4 Feature parameters (advanced user)

Parameter List

Parameter

Description

Remarks

MPPT multi-peak scanning

When the SUN2000 is used in scenarios where PV strings are obviously shaded, enable this function. Then the SUN2000 will perform MPPT scanning at regular intervals to locate the maximum power.

The scanning interval is set by MPPT multi-peak scanning interval.

MPPT scanning interval (min)

Specifies the MPPT multi-peak scanning interval.

This parameter is displayed only when MPPT multi-peak scanning is set to Enable.

RCD enhancing

RCD refers to the residual current of the SUN2000 to the ground. To ensure device security and personal safety, RCD should comply with the standard. If an AC switch with a residual current detection function is installed outside the SUN2000, this function should be enabled to reduce the residual current generated during SUN2000 running, thereby preventing the AC switch from misoperations.

N/A

Reactive power output at night

In some specific application scenarios, a power grid company requires that the SUN2000 can perform reactive power compensation at night to ensure that the power factor of the local power grid meets requirements.

This parameter is configurable only when Isolation is set to Input ungrounded, with a transformer.

PID protection at night

  • When PID protection at night is set to Enable, the SUN2000 will shut down automatically if it detects abnormality in PID voltage compensation during the reactive power compensation at night.
  • When PID protection at night is set to Disable, the SUN2000 will operate in grid-tied mode if it detects abnormality in PID voltage compensation during the reactive power compensation at night.

N/A

Power quality optimization mode

If Power quality optimization mode is set to Enable, the inverter output current harmonics will be optimized.

N/A

PV module type

This parameter is used to set different types of PV modules and the shutdown time of the concentration PV modules. If the concentration PV modules are shaded, the power drops drastically to 0 and the SUN2000 shuts down. The energy yield would be affected since it takes too long for the power to resume and SUN2000 to restart. The parameter does not need to be set for crystalline silicon and filmy PV modules.

  • If PV module type is set to Crystalline silicon or Film, the SUN2000 automatically detects the power of PV modules when they are shaded and shuts down if the power is too low.
  • When the concentration PV modules are used:
    • If PV module type is set to CPV 1, the inverter can quickly restart in 60 minutes when the input power of PV modules drops drastically due to shading.
    • If PV module type is set to CPV 2, the inverter can quickly restart in 10 minutes when the input power of PV modules drops drastically due to shading.

PID compensation direction

The PID effect may result in the power attenuation of PV modules, which is mainly caused by the DC voltage between PV modules and the ground. Enabling this setting lowers the DC voltage between PV modules and the ground by reducing the impedance on the input side to the ground.

This parameter is displayed only if PV module type is set to Crystalline silicon.

PID running mode

Specifies the operation mode of the SUN2000 built-in PID.

This parameter is displayed only for the models that support Built-in PID repair.

PID nighttime off-grid repair

Specifies whether to enable the PID nighttime off-grid repair.

This parameter is displayed only if PID running mode is set to Repair.

PID daytime off-grid repair

Specifies whether to enable the PID daytime off-grid repair.

This parameter is displayed only if PID running mode is set to Repair.

String connection mode

Specifies the connection mode of PV strings.

  • When the PV strings connect to the inverter separately (fully separate connection), there is no need to set this parameter. The inverter can automatically detect the connection mode of the PV strings.
  • When the PV strings connect to one another in parallel outside the inverter and then connect to the inverter independently (fully parallel connection), set this parameter to All PV strings connected.

N/A

Communication interrupt shutdown

The standards of certain countries and regions require that the SUN2000 must shut down after the communication is interrupted for a certain time.

If Communication interrupt shutdown is set to Enable and the SUN2000 communication has been interrupted for a specified time (set by Communication interruption duration), the SUN2000 will automatically shut down.

Communication resumed startup

If this parameter is enabled, the SUN2000 automatically starts after communication recovers. If this parameter is disabled, the SUN2000 needs to be started manually after communication recovers.

This parameter is displayed when Communication interrupt shutdown is set to Enable.

Communication interruption duration (min)

Specifies the duration for determining communication interruption, and is used for automatic shutdown for protection in case of communication interruption.

N/A

Soft start time (s)

Specifies the duration for the power to gradually increase when the SUN2000 starts.

N/A

Hibernate at night

The SUN2000 monitors PV strings at night. If Hibernate at night is set to Enable, the monitoring function of the SUN2000 will hibernate at night, reducing power consumption.

N/A

MBUS communication

For SUN2000 models that support both RS485 andMBUS communication, when RS485 communication is used, you are advised to set MBUS communication to Disable to reduce power consumption.

N/A

Upgrade delay

Upgrade delay is mainly used in the upgrade scenarios where the PV power supply is disconnected at night due to no sunlight or unstable at dawn or dusk due to poor sunlight.

After the SUN2000 upgrade starts, if Upgrade delay is set to Enable, the upgrade package is loaded first. After the PV power supply recovers and the activation conditions are met, the SUN2000 automatically activates the upgrade.

String monitor

The SUN2000 monitors PV strings in real time. If any PV string is abnormal (such as the PV string is shaded or the energy yield decreases), the SUN2000 generates an alarm to remind maintenance personnel to maintain the PV string in a timely manner.

If PV strings are easily shaded, you are advised to set String monitor to Disable to prevent false alarms.

String detection reference asymmetric coefficient

Specifies the threshold for determining PV string exception. The false alarms caused by fixed shadow shading can be controlled by changing this parameter.

This parameter is displayed when String monitor is set to Enable.

String detection starting power percentage (%)

Specifies the threshold for starting PV string exception detection. The false alarms caused by fixed shadow shading can be controlled by changing this parameter.

Tracker controller

Selects a controller vendor.

N/A

Duration for determining short-time grid disconnection (ms)

The standards of certain countries and regions require that the SUN2000 should not disconnect from the power grid if the power grid experiences a short-time failure. The SUN2000 output power should be recovered immediately after the fault is rectified.

N/A

Updated: 2019-10-12

Document ID: EDOC1100016052

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