Boolean Primitive

Defines whether or not the diagram objects points define the boundaries of a polygon or the routing of a polyline. If this value is true then a receiving application should consider the first and last points to be connected.

The connected status is related to a bus-branch model and the topological node to terminal relation. True implies the terminal is connected to the related topological node and false implies it is not. In a bus-branch model, the connected status is used to tell if equipment is disconnected without having to change the connectivity described by the topological node to terminal relation. A valid case is that conducting equipment can be connected in one end and open in the other. In particular for an AC line segment, where the reactive line charging can be significant, this is a relevant case.

Indicates whether the machine is a converter fed drive. Used for short circuit data exchange according to IEC 60909.

Indicates for converter drive motors if the power can be reversible. Used for short circuit data exchange according to IEC 60909.

The aggregate flag provides an alternative way of representing an aggregated (equivalent) element. It is applicable in cases when the dedicated classes for equivalent equipment do not have all of the attributes necessary to represent the required level of detail. In case the flag is set to “true” the single instance of equipment represents multiple pieces of equipment that have been modelled together as an aggregate equivalent obtained by a network reduction procedure. Examples would be power transformers or synchronous machines operating in parallel modelled as a single aggregate power transformer or aggregate synchronous machine. The attribute is not used for EquivalentBranch, EquivalentShunt and EquivalentInjection.

Specifies the availability of the equipment under normal operating conditions. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.

Specifies the availability of the equipment. True means the equipment is available for topology processing, which determines if the equipment is energized or not. False means that the equipment is treated by network applications as if it is not in the model.

Specifies whether or not the EquivalentInjection has the capability to regulate the local voltage. If true the EquivalentInjection can regulate. If false the EquivalentInjection cannot regulate. ReactiveCapabilityCurve can only be associated with EquivalentInjection if the flag is true.

Specifies the regulation status of the EquivalentInjection. True is regulating. False is not regulating.

Indicates whether initial symmetrical short-circuit current and power have been calculated according to IEC (Ik"). Used only if short circuit calculations are done according to superposition method.

Specifies the regulation status of the equipment. True is regulating, false is not regulating.

Used for Yn and Zn connections. True if the neutral is solidly grounded.

Indicates whether the machine is part of a power station unit. Used for short circuit data exchange according to IEC 60909. It has an impact on how the correction factors are calculated for transformers, since the transformer is not necessarily part of a synchronous machine and generating unit. It is not always possible to derive this information from the model. This is why the attribute is necessary.

It is used to define if the data (other attributes related to short circuit data exchange) defines long term operational conditions or not. Used for short circuit data exchange according to IEC 60909.

(for Yn and Zn connections) True if the neutral is solidly grounded.

Describe if a metal oxide varistor (mov) for over voltage protection is configured in parallel with the series compensator. It is used for short circuit calculations.

Indicates whether or not the generator is earthed. Used for short circuit data exchange according to IEC 60909.

If true, this boundary point is a point of common coupling (PCC) of a direct current (DC) interconnection, otherwise the interconnection is AC (default).

If true, this boundary point is on the interconnection that is excluded from control area interchange calculation and consequently has no related tie flows. Otherwise, the interconnection is included in control area interchange and a TieFlow is required at all sides of the boundary point (default).

The in service status as a result of topology processing. It indicates if the equipment is considered as energized by the power flow. It reflects if the equipment is connected within a solvable island. It does not necessarily reflect whether or not the island was solved by the power flow.

The attribute tells if the computed state of the switch is considered open.

The attribute is used in cases when no Measurement for the status value is present. If the Switch has a status measurement the Discrete.normalValue is expected to match with the Switch.normalOpen.

Branch is retained in the topological solution. The flow through retained switches will normally be calculated in power flow.

The attribute tells if the switch is considered open when used as input to topology processing.

If true, the switch is locked. The resulting switch state is a combination of locked and Switch.open attributes as follows: <ul> <li>locked=true and Switch.open=true. The resulting state is open and locked;</li> <li>locked=false and Switch.open=true. The resulting state is open;</li> <li>locked=false and Switch.open=false. The resulting state is closed.</li> </ul>

Specifies whether or not a TapChanger has load tap changing capabilities.

Specifies the regulation status of the equipment. True is regulating, false is not regulating.

Function block used indicator. true = use of function block is enabled false = use of function block is disabled.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Boolean parameter value. If this attribute is populated, integerParameterValue and floatParameterValue will not be.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Behaviour is based on a proprietary model as opposed to a detailed model. true = user-defined model is proprietary with behaviour mutually understood by sending and receiving applications and parameters passed as general attributes false = user-defined model is explicitly defined in terms of control blocks and their input and output signals.

Switch for fuel source characteristic to recognize that fuel flow, for a given fuel valve stroke, can be proportional to engine speed (<i>Wfspd</i>). true = fuel flow proportional to speed (for some gas turbines and diesel engines with positive displacement fuel injectors) false = fuel control system keeps fuel flow independent of engine speed. Typical value = true.

Switch for fuel source characteristic to recognize that fuel flow, for a given fuel valve stroke, can be proportional to engine speed (<i>Wfspd</i>). true = fuel flow proportional to speed (for some gas turbines and diesel engines with positive displacement fuel injectors) false = fuel control system keeps fuel flow independent of engine speed. Typical value = false.

Governor control flag (<i>Cflag</i>). true = PID control is active false = double derivative control is active. Typical value = true.

Input signal switch (<i>Flag</i>). true = <i>Pe</i> input is used false = feedback is received from <i>CV</i>. <i>Flag</i> is normally dependent on <i>Tt</i>. If <i>Tt</i> is zero, <i>Flag</i> is set to false. If <i>Tt</i> is not zero, <i>Flag</i> is set to true. Typical value = true.

Water tunnel and surge chamber simulation (<i>Tflag</i>). true = enable of water tunnel and surge chamber simulation false = inhibit of water tunnel and surge chamber simulation. Typical value = false.

Simplified Pelton model simulation (<i>Sflag</i>). true = enable of simplified Pelton model simulation false = enable of complete Pelton model simulation (non-linear gain). Typical value = true.

Static compensating characteristic (<i>Cflag</i>). It should be true if simplifiedPelton = false. true = enable of static compensating characteristic false = inhibit of static compensating characteristic. Typical value = false.

Water tunnel and surge chamber simulation (<i>Tflag</i>). true = enable of water tunnel and surge chamber simulation false = inhibit of water tunnel and surge chamber simulation. Typical value = false.

Input signal switch (<i>Flag</i>). true = <i>Pe</i> input is used false = feedback is received from <i>CV</i>. <i>Flag</i> is normally dependent on <i>Tt</i>. If <i>Tt </i>is zero, <i>Flag</i> is set to false. If <i>Tt</i> is not zero, <i>Flag</i> is set to true. Typical value = true.

Feedback signal type flag (<i>Flag</i>). true = use gate position feedback signal false = use Pe.

Input signal switch (<i>Flag</i>). true = <i>Pe</i> input is used false = feedback is received from <i>CV</i>. <i>Flag</i> is normally dependent on <i>Tt</i>. If <i>Tt </i>is zero, <i>Flag</i> is set to false. If <i>Tt</i> is not zero, <i>Flag</i> is set to true. Typical value = true.

Feedback signal selection (<i>Sw</i>). true = PID output (if <i>R-Perm-Gate </i>= droop and <i>R-Perm-Pe </i>= 0) false = electrical power (if <i>R-Perm-Gate </i>= 0 and <i>R-Perm-Pe </i>= droop) or false = gate position (if R<i>-Perm-Gate </i>= droop and <i>R-Perm-Pe </i>= 0). Typical value = false.

Intentional deadband indicator. true = intentional deadband is applied false = intentional deadband is not applied. Typical value = true.

Unintentional deadband location. true = intentional deadband is applied before point "A" false = intentional deadband is applied after point "A". Typical value = true.

Nonlinear valve characteristic. true = nonlinear valve characteristic is used false = nonlinear valve characteristic is not used. Typical value = true.

Electric power input selection (Peflag). true = electric power input false = feedback signal. Typical value = false.

Type of turbine governor reference (<i>Type</i>). true = speed reference governor false = load reference governor. Typical value = true.

Frequency bias flag (<i>Fbf</i>). true = enable frequency bias false = disable frequency bias. Typical value = false.

Power controller flag (<i>Pbf</i>). true = enable load controller false = disable load controller. Typical value = false.

UEL input (<i>uelin</i>). true = input is connected to the HV gate false = input connects to the error signal. Typical value = true.

(<i>exclim</i>). IEEE standard is ambiguous about lower limit on exciter output. true = a lower limit of zero is applied to integrator output false = a lower limit of zero is not applied to integrator output. Typical value = true.

UEL input (<i>uelin</i>). true = input is connected to the HV gate false = input connects to the error signal. Typical value = true.

(<i>exclim</i>). IEEE standard is ambiguous about lower limit on exciter output. true = a lower limit of zero is applied to integrator output false = a lower limit of zero is not applied to integrator output. Typical value = true.

OEL input (<i>OELin</i>). true = LV gate false = subtract from error signal. Typical value = true.

UEL input (<i>UELin</i>). true = HV gate false = add to error signal. Typical value = true.

Selector of the Power System Stabilizer (PSS) input (<i>PSSin</i>). true = PSS input (<i>Vs</i>) added to error signal false = PSS input (<i>Vs</i>) added to voltage regulator output. Typical value = true.

UEL input (<i>UELin</i>). true = HV gate false = add to error signal. Typical value = true.

Indicates if both HV gate and LV gate are active (<i>HVLVgates</i>). true = gates are used false = gates are not used. Typical value = true.

Indicates if HV gate is active (<i>HVgate</i>). true = gate is used false = gate is not used. Typical value = true.

Indicates if LV gate is active (<i>LVgate</i>). true = gate is used false = gate is not used. Typical value = true.

Input limiter indicator. true = input limiter <i>Vimax</i> and <i>Vimin</i> is considered false = input limiter <i>Vimax </i>and <i>Vimin</i> is not considered. Typical value = true.

PID limiter indicator. true = input limiter <i>Vpidmax</i> and <i>Vpidmin</i> is considered false = input limiter <i>Vpidmax</i> and <i>Vpidmin</i> is not considered. Typical value = true.

Selector for the limiter on the block (<i>1/sTe</i>). See diagram for meaning of true and false. Typical value = false.

Multiply by generator's terminal voltage indicator. true =the limits <i>Vrmax</i> and <i>Vrmin</i> are multiplied by the generator’s terminal voltage to represent a thyristor power stage fed from the generator terminals false = limits are not multiplied by generator's terminal voltage. Typical value = false.

AVR output voltage dependency selector (<i>I</i><i>_MUL</i>). true = selector is connected false = selector is not connected. Typical value = true.

Supplementary signal routing selector (<i>switch</i>). true = <i>Vs</i> connected to 3rd summing point false = <i>Vs</i> connected to 1st summing point (see diagram). Typical value = false.

(<i>exclim</i>). IEEE standard is ambiguous about lower limit on exciter output. true = a lower limit of zero is applied to integrator output false = a lower limit of zero is not applied to integrator output. Typical value = true.

(<i>exclim</i>). IEEE standard is ambiguous about lower limit on exciter output. true = a lower limit of zero is applied to integrator output false = a lower limit of zero is not applied to integrator output. Typical value = true.

(<i>Vtlim</i>). true = limiter at the block (<i>Ka / [1 + sTa]</i>) is dependent on <i>Vt </i> false = limiter at the block is not dependent on <i>Vt</i>. Typical value = true.

(<i>exclim</i>). IEEE standard is ambiguous about lower limit on exciter output. true = a lower limit of zero is applied to integrator output false = a lower limit of zero not applied to integrator output. Typical value = true.

(<i>Efdlim</i>). true = exciter output limiter is active false = exciter output limiter not active. Typical value = true.

(<i>exclim</i>). true = lower limit of zero is applied to integrator output false = lower limit of zero not applied to integrator output. Typical value = true.

Vb limiter indicator. true = exciter <i>Vbmax</i> limiter is active false = <i>Vb1max</i> is active. Typical value = true.

Fed by selector (<i>BusFedSelector</i>). true = bus fed (switch is closed) false = solid fed (switch is open). Typical value = true.

Power source switch (<i>Cswitch</i>). true = fixed voltage of 1.0 PU false = generator terminal voltage.

Secondary voltage control state (<i>Qc_on_off</i>). true = secondary voltage control is on false = secondary voltage control is off. Typical value = false.

Selector to apply automatic calculation in secondary controller model (<i>remote</i>). true = automatic calculation is activated false = manual set is active; the use of desired value of reactive power (<i>Qz</i>) is required. Typical value = true.

UEL input (<i>UELin</i>). true = HV gate false = add to error signal. Typical value = false.

Selector (<i>UEL</i>). true = <i>UEL</i> is part of block diagram false = <i>UEL</i> is not part of block diagram. Typical value = false.

Selector (<i>LVGate</i>). true = <i>LVGate</i> is part of the block diagram false = <i>LVGate</i> is not part of the block diagram. Typical value = false.

Selector (<i>K1</i>). true = feedback is from <i>Ifd</i> false = feedback is not from <i>Ifd</i>. Typical value = true.

Selector (<i>Vilim</i>). true = <i>Vimin</i>-<i>Vimax</i> limiter is active false = <i>Vimin</i>-<i>Vimax</i> limiter is not active. Typical value = true.

Selector (<i>vmult</i>). true = multiply regulator output by terminal voltage false = do not multiply regulator output by terminal voltage. Typical value = true.

(<i>m</i>). true = IFD limiting false = EFD limiting.

<font color="#0f0f0f">Signal selector (<i>V</i><i>_ADAT</i>).</font> <font color="#0f0f0f">true = closed (generator power is greater than <i>Pmin</i>)</font> <font color="#0f0f0f">false = open (<i>Pe</i> is smaller than <i>Pmin</i>).</font> <font color="#0f0f0f">Typical value = true.</font>

Selector (<i>Kd</i>). true = e^-sTdelay used false = e^-sTdelay not used.

Selector for frequency/shaft speed input (<i>isFreq</i>). true = speed (same meaning as InputSignaKind.rotorSpeed) false = frequency (same meaning as InputSignalKind.busFrequency). Typical value = true (same meaning as InputSignalKind.rotorSpeed).

Selector for second washout enabling (<i>C</i><i>_TW2</i>). true = second washout filter is bypassed false = second washout filter in use. Typical value = true.

<font color="#0f0f0f">Signal selector (<i>V</i><i>_adAtt</i>).</font> <font color="#0f0f0f">true = closed (generator power is greater than <i>Pmin</i>)</font> <font color="#0f0f0f">false = open (<i>Pe</i> is smaller than <i>Pmin</i>).</font> <font color="#0f0f0f">Typical value = true.</font>

Digital/analogue output switch (<i>Isw</i>). true = produce analogue output false = convert to digital output, using tap selection table.

Overexcitation Flag (<i>OVEX</i>) true = overexcited false = underexcited.

Overexcitation or under excitation flag (<i>EXLON</i>) true = 1 (not in the overexcitation or underexcitation state, integral action is active) false = 0 (in the overexcitation or underexcitation state, so integral action is disabled to allow the limiter to play its role).

Overexcitation or under excitation flag (<i>EXLON</i>) true = 1 (not in the overexcitation or underexcitation state, integral action is active) false = 0 (in the overexcitation or underexcitation state, so integral action is disabled to allow the limiter to play its role).

Selector (<i>J</i>). true = control mode for reactive power false = control mode for power factor.

Limitation of type 3 stator current (<i>M</i><i>_DFSLim</i>). <i>M</i><i>_DFSLim</i>= 1 for wind turbines type 4. It is a type-dependent parameter. false= total current limitation (0 in the IEC model) true=stator current limitation (1 in the IEC model).

Prioritisation of Q control during UVRT (<i>M</i><i>_qpri</i>). It is a project-dependent parameter. true = reactive power priority (1 in the IEC model) false = active power priority (0 in the IEC model).

Enable UVRT power control mode (<i>M</i><i>_pUVRT</i>₎. It is a project-dependent parameter. true = voltage control (1 in the IEC model) false = reactive power control (0 in the IEC model).

Zero crossing measurement mode (<i>Mzc</i>). It is a type-dependent parameter. true = WT protection system uses zero crossings to detect frequency (1 in the IEC model) false = WT protection system does not use zero crossings to detect frequency (0 in the IEC model).

Crowbar control mode (<i>M</i><i>_WTcwp</i>). It is a case-dependent parameter. true = 1 in the IEC model false = 0 in the IEC model.

Specifies the sign of the tie flow associated with a control area. True if positive flow into the terminal (load convention) is also positive flow into the control area. See the description of ControlArea for further explanation of how TieFlow.positiveFlowIn is used.

The regulation is performed in a discrete mode. This applies to equipment with discrete controls, e.g. tap changers and shunt compensators.

The flag tells if regulation is enabled.

Indicates the exponential voltage dependency model is to be used. If false, the coefficient model is to be used. The exponential voltage dependency model consist of the attributes: - pVoltageExponent - qVoltageExponent - pFrequencyExponent - qFrequencyExponent. The coefficient model consist of the attributes: - pConstantImpedance - pConstantCurrent - pConstantPower - qConstantImpedance - qConstantCurrent - qConstantPower. The sum of pConstantImpedance, pConstantCurrent and pConstantPower shall equal 1. The sum of qConstantImpedance, qConstantCurrent and qConstantPower shall equal 1.

Defines if the operational limit type has infinite duration. If true, the limit has infinite duration. If false, the limit has definite duration which is defined by the attribute acceptableDuration.

Tells if the limit values are in percentage of normalValue or the specified Unit for Measurements and Controls.

Indicates that a client is currently sending control commands that has not completed.

If true then this measurement is an active power, reactive power or current with the convention that a positive value measured at the Terminal means power is flowing into the related PowerSystemResource.

Measurement value may be incorrect due to a reference being out of calibration.

Value has been replaced by State Estimator. estimatorReplaced is not an IEC61850 quality bit but has been put in this class for convenience.

This identifier indicates that a supervision function has detected an internal or external failure, e.g. communication failure.

Measurement value is old and possibly invalid, as it has not been successfully updated during a specified time interval.

Measurement value is blocked and hence unavailable for transmission.

To prevent some overload of the communication it is sensible to detect and suppress oscillating (fast changing) binary inputs. If a signal changes in a defined time twice in the same direction (from 0 to 1 or from 1 to 0) then oscillation is detected and the detail quality identifier "oscillatory" is set. If it is detected a configured numbers of transient changes could be passed by. In this time the validity status "questionable" is set. If after this defined numbers of changes the signal is still in the oscillating state the value shall be set either to the opposite state of the previous stable value or to a defined default value. In this case the validity status "questionable" is reset and "invalid" is set as long as the signal is oscillating. If it is configured such that no transient changes should be passed by then the validity status "invalid" is set immediately in addition to the detail quality identifier "oscillatory" (used for status information only).

Measurement value is beyond a predefined range of value.

Measurement value is beyond the capability of being represented properly. For example, a counter value overflows from maximum count back to a value of zero.

A correlation function has detected that the value is not consistent with other values. Typically set by a network State Estimator.

Measurement value is transmitted for test purposes.