Huawei SUN2000-63KTL-JPH0 User Manual page 98

SUN2000-63KTL-JPH0
User Manual
Alarm Alarm Name
ID
2034 Grid Overvoltage
2035 Grid Voltage
Imbalance
Issue 06 (2020-02-18)
Alarm Cause
Severity
The grid voltage is below the
lower threshold or the low
voltage duration has lasted for
more than the value specified
by LVRT.
Major Cause ID = 1
The grid voltage exceeds the
higher threshold or the high
voltage duration has lasted for
more than the value specified
by HVRT.
Major Cause ID = 1
The difference between grid
phase voltages exceeds the
upper threshold.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Measures
accidentally, the power
grid may be abnormal
temporarily. The
SUN2000 automatically
recovers after detecting
that the power grid
becomes normal.
2. If the alarm occurs
frequently, check
whether the power grid
voltage is within the
acceptable range. If no,
contact the local power
operator. If yes, modify
the power grid
undervoltage protection
threshold with the
consent of the local
power operator.
3. If the fault persists for a
long time, check the AC
circuit breaker and AC
output power cable.
1. Check whether the grid
connection voltage
exceeds the upper
threshold. If yes, contact
the local power operator.
2. If you have confirmed
that the grid connection
voltage exceeds the
upper threshold and
obtained the consent of
the local power operator,
modify the overvoltage
protection threshold.
3. Check that the peak grid
voltage does not exceed
the upper threshold.
1. Check that the grid
voltage is within the
normal range.
2. Check the connection of
the AC output power
cable. If the cable
connection is proper but
the alarm occurs
frequently and affects the
power production of the
PV plant, contact the
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