ABB Relion REQ650, Руководство по применению

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The energy values can be read through communication in MWh and MVarh in
monitoring tool of PCM600 and/or alternatively the values can be presented on the
local HMI. The local HMI graphical display is configured with PCM600 Graphical
display editor tool (GDE) with a measuring value which is selected to the active and
reactive component as preferred. All four values can also be presented.
Maximum demand values are presented in MWh or MVarh in the same way.
Alternatively, the values can be presented with use of the pulse counters function
(PCGGIO). The output values are scaled with the pulse output setting values
EAFAccPlsQty , EARAccPlsQty , ERFAccPlsQty and ERRAccPlsQty of the energy
metering function and then the pulse counter can be set-up to present the correct values
by scaling in this function. Pulse counter values can then be presented on the local
HMI in the same way and/or sent to the SA system through communication where the
total energy then is calculated by summation of the energy pulses. This principle is
good for very high values of energy as the saturation of numbers else will limit energy
integration to about one year with 50 kV and 3000 A. After that the accumulation will
start on zero again.
13.2.3 Setting guidelines
The parameters are set via the local HMI or PCM600.
The following settings can be done for the energy calculation and demand handling
function ETPMMTR:
GlobalBaseSel : Selects the global base value group used by the function to define
( IBase ), ( UBase ) and ( SBase ).
Operation : Off / On
tEnergy : Time interval when energy is measured.
StartAcc : Off / On is used to switch the accumulation of energy on and off.
The input signal STACC is used to start accumulation. Input signal
STACC cannot be used to halt accumulation. The energy content is
reset every time STACC is activated. STACC can for example, be
used when an external clock is used to switch two active energy
measuring function blocks on and off to have indication of two tariffs.
tEnergyOnPls : gives the pulse length ON time of the pulse. It should be at least 100
ms when connected to the Pulse counter function block. Typical value can be 100 ms.
tEnergyOffPls : gives the OFF time between pulses. Typical value can be 100 ms.
EAFAccPlsQty and EARAccPlsQty : gives the MWh value in each pulse. It should be
selected together with the setting of the Pulse counter (PCGGIO) settings to give the
correct total pulse value.
1MRK 505 291-UEN A
Section 13
Metering
285
Application manual