Term Long text

Short text

UNIT

Description

3-Phase active shc power

Pk3

kW

Active three phase short circuit power calculated in node-point

3-phase apparent shc power

Sk3

kVA

Apparent three phase short circuit power calculated in node-point

3-Phase reactive shc power

Qk3

kVAr

Reactive three phase short circuit power calculated in node-point

Active power

A pow

kW

Node point active power

Alarm U%

Alarm U%

Alarm obtained from parameter settings relating to the relative voltage drop for node points

Alarm V

Alarm V

Alarm obtained from parameter settings relating to voltage for node points

Base Voltage

Base Volt.

kV

System voltage for the node-point (based on sub-type in the documentation)

Customer fuse

Cust.fuse

A

Customer fuse rated current. Only information about customer fuses are available via the customer system

Double earth fault

Double e.fault

A

Only calculated in point with earth point according to simplified method, 2 faults in the same point (twin-case) in MV.

Earth fault current

Ie

A

Earth fault current at direct earthed network for simulated error in the node-point. LV

Earth fault impedance

Earth imp.

ohm

Earth fault impedance in the point. The impedance that is the basis for the earth fault currents in the point. Direct earthed LV-net

Earth fault voltage LV

E.fault.volt.LV

V

The exposed voltage in in the node point at earth fault in direct earthed LV network

Earth fault voltage MV

E.fault.volt.MV

V

The exposed voltage in in the node point at earth fault in impedance earthed Mv network

Energy read

En inp.

kWh

Total energy for the nodepoint from attached customers

Ik2

Ik2

A

Phase to phase shortcircuit current for simulated error in node point. MV

Ik3

Ik3

A

Three phase short circuit current for simulated error in node point. MV + LV

Ik3 transformer upside

Ik3 trf.prim

A

Three-phased short-circuit current for simulated error in downside of the transformer, re-calculated to upper-side. MV + LV

Load current in load point

I n.point

A

Load current generated by the load attached to the specific node point

Lp Date min voltage

Date min V.

Date when minimum voltage for the node appears when making a calculation using load profile curves for load input

Lp Hour min voltage

HH min V.

Hour for the date when minimum voltage for the node appears when making a calculation using load profile curves for load input

Lp Min voltage

Min V.

kV

The minimum voltage for the node at date and hour for minimum voltage when making a calculation using load profile curves for load input

Max exposed earthfault voltage

Max exp.volt.

V

Maximum allowed exposed voltage at earth faults

Node

Node

ID for the node point

Positive seq.imp.

Pos.imp.

ohm

The node point positive sequence impedance

Powermagin max current

Pmarg.I/P

kW

Power margin relating to feeding components load limits, conductors and transformers.

Powermagin voltage drop

Pmarg Vdrop

kW

Power margin relating to the max allowed voltage-drop in the node points of the network. Specified in the calculation parameters

PQ margin Type

PQm

A flag for power type, which is limiting in the margin calculation. P = active , Q = reactive.

Reactive power

R pow

kVAr

Reactive power as load on the node point. Can be Velander calculated power and/or read power depending on input data

Rk earth

Rk earth

Ohm

Earth fault resistance in node-point

Rk phase

Rk phase

Ohm

Short circuit resistance phase conductor, positive sequence, calculated in node-point

Rk zero

Rk0

Ohm

Short circuit resistance neutral conductor, zero sequence, calculated in node-point

Single phase shortcircuit

Ik1

A

Single phase short circuit or short circuit phase-screen MV.

Sum cable earth capacitances from above

Sum earth cap u

A

The sum of earth capacitances for conductors (re-calculated to capacitive current), contribution from overlying network relating to this node  point

Sum cable earth capacitances from below

Sum earth cap d

A

The sum of earth capacitances for conductors (re-calculated to capacitive current), contribution from underlying network relating to this node  point

Sum Cable operating capacitance from below

Sum operating cap d

kVAr

The sum of operating capacitances for conductors (re-calculated to reactive power), contribution from underlying network relating to this node  point

Sum neutral point reactor current from above

Sum curr reactor u

A

The sum of neutral point reactor current from overlying network relating to this node  point

Sum neutral point reactor current from below

Sum curr groundreactor d

A

The sum of neutral point reactor current from underlying network relating to this node  point

Sum oth. capacitive current from neutral point from above

Sum oth cap cur u

A

The sum of other capacitive current in neutral points from overlying network relating to this node  point

Sum oth. capacitive current from neutral point from below

Sum oth cap cur d

A

The sum of other capacitive current in neutral points from underlying network relating to this node  point

Sum reactive current from above

Sum reactive cur u

A

Sum of reactive current (capacitances less the inductive current). Contribution from overlying network in relation to the point

Sum reactive current from below

Sum reactive cur d

A

Sum of reactive current (capacitances less the inductive current). Contribution from underlying network in relation to the point

Sum resistive current from above

Sum resistive cur u

A

Sum of resistive current from active reactor losses. Contribution from overlying reactors relative the point

Sum resistive current from below

Sum resistive cur d

A

Sum of resistive current from active reactor losses. Contribution from underlying reactors relative the point

Voltage

Volt.

V

Calculated voltage in node-point

Voltage angle

Ang grd

Grd

Calculated voltage angle in node-point relating to angle in the feeding point

Voltage drop

V.drop

%

Voltage drop calculated in relation to overlying transformer downside (lower busbar)

Voltage rigidity

U rig.

%

Voltage drop calculated for simulated impulse load (voltage rigidity), based on stated im­pulse load power in the calculation parameters

Xk earth

Xk earth

Ohm

Earth fault reactance calculated in node-point

Xk phase

Xk phase

Ohm

Phase conductor reactance calculated in node-point

Xk zero

Xk0

Ohm

Neutral conductor reactance calculated in node-point