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SmartLogger3000 User Manual

This document describes the SmartLogger3000 and SmartModule1000A01 in terms of installation, electrical connections, system operation, maintenance, and troubleshooting. BOM number: 02312SCU, 02312SCU-001, 02312SCU-002, 02312SCU-003, 02312SCU-004, 02312SCU-005, 02312SCU-006, 02312SCU-007, 02312SCU-008, 02312SCU-009, 02312SCU-010, 02312SGF, 02312SGG, 02312SGK and 02312SGJ.

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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).
Setting Reactive Power Control

Setting Reactive Power Control

Large-scale PV plants are required to adjust the voltage at the grid-tied point. Power grid scheduling personnel enable a PV plant to absorb or add reactive power at the grid-tied point, that is, to enable the reactive power compensation, based on the real-time reactive power transmission status in the power grid.

  1. Choose Monitoring > SUN2000 > Running Param. > Power Adjustment. On the displayed page, check that Remote power schedule is set to Enable.
  2. Set the parameters for reactive power control and click Submit.

    Figure 6-43 Reactive power control

No Output

Parameter

Description

Reactive power control mode

If the PV plant is not required to adjust the voltage at the grid-tied point or perform reactive power compensation, solar inverters can run with pure active power output. In this case, set this parameter to No output.

DI Reactive Scheduling

  • When setting this function, ensure that the user-defined DI port is not occupied. Otherwise, the setting will fail.
  • SmartLogger scenario: Before setting this function, ensure that the SmartLogger is properly connected to the Ripple Control Receiver.
  • SmartLogger+SmartModule scenario: Before setting this function, ensure that the SmartModule is properly connected to the Ripple Control Receiver.
Table 6-3 SmartLogger scenario

Parameter

Description

Reactive power control mode

Set this parameter to DI reactive scheduling.

DI

NOTE:

DI parameters include DI1, DI2, DI3, DI4, and Power factor.

  • Sixteen levels are supported for power factors.
  • "√" indicates a low level. When the four DI ports of the SmartLogger are connected, the ports are low-level ports. When not connected, the ports are high-level ports.
  • The percentage levels of DI1–DI4 should differ from each other. Otherwise, an abnormal command is generated.
  • If the actual input DI signal is inconsistent with that configured on the WebUI, the SmartLogger controls the solar inverter to work at full power and the Abnormal Reactive Schedule alarm is raised.
Table 6-4 SmartLogger+SmartModule scenario

Parameter

Description

Reactive power control mode

Set this parameter to DI reactive scheduling.

DI

NOTE:

The DI parameters include M1.DI1, M1.DI2, M1.DI3, M1.DI4, and Percentage(%).

  • Supports 16 levels of percentages.
  • "√" indicates a low level. When the four DI ports of the SmartModule are connected, the ports are low-level ports. When not connected, the ports are high-level ports.
  • The percentage levels of M1.DI1 to M1.DI4 should differ from each other.Otherwise, an exception will occur during command parsing.

    If the actual input DI signal is inconsistent with that configured on the WebUI, the SmartLogger controls the solar inverters to work at full load and generates the Abnormal Reactive Schedule alarm.

  • Before connecting the SmartModule to the SmartLogger, if DI reactive scheduling has been configured for the DI port and the scheduling signal needs to be connected to the SmartModule, delete the DI configuration and reconfigure it.
  • In the scenario where the SmartLogger and SmartModule are combined, if the SmartModule is removed and the scheduling signal needs to be connected to the SmartLogger, delete the DI configuration and reconfigure it.

Reactive Power Fix Control

Parameter

Description

Reactive power control mode

If the PV array is required to generate constant reactive power at a specified time, set this parameter to Reactive power fix control.

Start time

If the solar inverter is required to run with specified maximum power in certain periods of a day, add setting records based on site requirements.

When multiple time points are set, the solar inverter will run with the maximum power specified for the time point that is earlier than and the closest to the current system time. For example, if you add 00:00:00 and 12:00:00 on the WebUI and the current system current is 14:30:00, the solar inverter will run with the maximum power specified for 12:00:00.

Reactive power (kVar)

Power Factor Fix Control

Parameter

Description

Reactive power control mode

If the PV plant is required to generate a constant power factor at the grid-tied point and the solar inverter is required to adjust the real-time reactive power based on the preset power factor, set this parameter to Power factor fix control.

Start time

If the solar inverter is required to run with a specified power factor in certain periods of a day, add setting records based on site requirements.

When multiple time points are set, the solar inverter will run with the maximum power specified for the time point that is earlier than and the closest to the current system time. For example, if you add 00:00:00 and 12:00:00 on the WebUI and the current system current is 14:30:00, the solar inverter will run with the maximum power specified for 12:00:00.

Power factor

Q-U Characteristic Curve

If you do not need the SmartLogger to send remote reactive power control commands, you can configure the characteristic curve as a substitute. The SmartLogger delivers the values configured for the characteristic curve to the solar inverter, which then operates according to the configuration. The SmartLogger no longer adjusts the values.

Configure the characteristic curve under instructions from professionals to ensure that the solar inverter works properly.

The Q-U characteristic curve control mode is to dynamically adjust the ratio Q/S of output reactive power to apparent power in accordance with the ratio U/Un(%) of the actual grid voltage to the rated grid voltage.

Parameter

Description

Reactive power control mode

Set this parameter to Q-U characteristic curve.

Reactive power adjustment time

Specifies the change interval of the reactive power for a grid-tied point.

Trigger power ratio

Under a specific grid code, after you set this parameter, the characteristic curve takes effect only when the actual output active power of the solar inverter is greater than the preset value.

Characteristic curve points

Specifies the number of characteristic curve points.

The characteristic curve supports a maximum of 10 valid points.

U/Un(%)

When configuring the curve, ensure that the U/Un(%) value of a point is greater than the U/Un(%) value of the previous point. Otherwise, the message indicating invalid input will be displayed.

Q/S

cosφ-P/Pn Characteristic Curve

If you do not need the SmartLogger to send remote reactive power control commands, you can configure the characteristic curve as a substitute. The SmartLogger delivers the values configured for the characteristic curve to the solar inverter, which then operates according to the configuration. The SmartLogger no longer adjusts the values.

Configure the characteristic curve under instructions from professionals to ensure that the solar inverter works properly.

The cosφ-P/Pn characteristic curve control mode is to dynamically adjust the power factor cosφ in accordance with the P/Pn (%) based on the VDE-4105 and BDEW German standards.

Parameter

Description

Reactive power control mode

Set this parameter to cosφ-P/Pn characteristic curve.

Characteristic curve points

Specifies the number of characteristic curve points.

The characteristic curve supports a maximum of 10 valid points.

U/Un(%)

When configuring the curve, ensure that the P/Pn(%) value of a point is greater than the P/Pn(%) value of the previous point. Otherwise, the message indicating invalid input will be displayed.

cosφ

Q-U Hysteresis Curve (CEI0-16)

If you do not need the SmartLogger to send remote reactive power control commands, you can configure the characteristic curve as a substitute. The SmartLogger delivers the values configured for the characteristic curve to the solar inverter, which then operates according to the configuration. The SmartLogger no longer adjusts the values.

Configure the characteristic curve under instructions from professionals to ensure that the solar inverter works properly.

The Q-U hysteresis curve (CEI0-16) control mode is the Italian standard CEI0-16 version of the Q-U characteristic curve. It dynamically adjusts the output reactive power of the solar inverter in accordance with the ratio of the actual voltage to the rated voltage. The final value should be in the form of Q/S.

Parameter

Description

Reactive power control mode

Set this parameter to Q-U hysteresis curve(CEI0-16).

Reactive power adjustment time

Specifies the change interval of the reactive power for a grid-tied point.

Percents of trigger frequency

Under a specific grid code, after you set this parameter, the characteristic curve takes effect only when the actual output active power of the solar inverter is greater than the preset value.

U/Un(%)

When configuring the curve, ensure that the U/Un(%) value of a point is greater than the U/Un(%) value of the previous point. Otherwise, the message indicating invalid input will be displayed.

When configuring the curve, ensure that the Q/S values at points A and B are the same and set in sequence, and that the Q/S values at points C and D are the same and set in sequence. Otherwise, a message indicating invalid input is displayed.

Q/S

Remote Communication Scheduling

The management system or independent power adjustment device sends scheduling commands over the communications port that works with Modbus-TCP or IEC104, without the need of user configuration or operation. The SmartLogger can automatically switch between scheduling modes and send scheduling commands.

Parameter

Description

Reactive power control mode

As the Remote communication scheduling mode has a higher priority, the SmartLogger automatically changes Reactive power control mode to Remote communication scheduling after receiving a scheduling command from the upper-layer management system.

If this parameter is set to Remote communication scheduling, the SmartLogger parses the scheduling command delivered by the upper-layer management system to valid instruction data that can be identified by the solar inverters in the PV plant and delivers the data to all solar inverters connected to the SmartLogger.

Power Factor Closed-Loop Control (Old Policy)

Before setting this parameter, ensure that the power meter is correctly connected to the SmartLogger.

Parameter

Description

Reactive power control mode

Set this parameter to Power factor closed-loop control (old policy).

Target power factor

Specifies the target value for the adjustment power factor of the power meter.

Adjustment period

Specifies the interval for sending adjustment commands by the SmartLogger.

Adjustment deadband

Specifies the adjustment power factor precision.

NOTICE:

This parameter is valid only when the power factor of the power meter is greater than 0.9.

Power Factor Closed-Loop Control

To improve the revenue, a distributed PV plant needs to reduce or avoid the power factor surcharge by performing distributed reactive power compensation. To enable the function, set the related parameters.

  • You are advised to choose Settings > Smart Reactive Power Compensation to enable smart reactive power compensation.
  • Before setting the parameters, ensure that the license for smart reactive power compensation has been loaded on the Maintenance > License Management page.
  • Before setting the parameters, ensure that a power meter has been connected to the SmartLogger.

Parameter

Description

Reactive power control mode

Set this parameter to Power factor closed-loop control.

Electric meter power direction

When the solar inverter has no output power, set this parameter to Positive if the active power displayed on the meter is positive. Otherwise, set this parameter to Reverse. After the setting is complete, you can check the power direction of the power meter if you are not sure about it.

Power meter

Set this parameter to Smart meter.

Target power factor

Specifies the target value for the adjustment power factor of the power meter. The target value should be larger than the appraisal value of the PV plant power factor.

Adjustment period

Specifies the interval for sending adjustment commands by the SmartLogger.

Adjustment deadband

Specifies the adjustment power factor precision.

NOTICE:

This parameter is valid only when the power factor of the power meter is greater than 0.9.

Reactive compensation delay

Specifies the delay time for starting the distributed power factor compensation if the current power factor is lower than the target power factor.

When the SmartLogger receives a remote reactive power scheduling command from the PV plant, it automatically changes Reactive power control mode to Remote communication scheduling. If power factor closed-loop control is required, set Reactive power control mode to Power factor closed-loop control and set the target power factor correctly.

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Updated: 2020-02-21

Document ID: EDOC1100108365

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