ENA-Report

ENA-Report - Off-line data post-processing

ENA-Report is a handy tool for analysis, displaying, comparison, export and protocol generation of data stored by the ENA power quality analyzer. Data can be analyzed in time domain, frequency domain, statistical analysis and special analysis according to EN50160 are possible. Protocols from the measurements can be printed or saved to BMP or HTML. Also it is possible to export the measured data into ASCII files. Thanks to client-server technology data can be processed locally or remotely.

 

 

Time domain analysis

Characterization:

Time domain analysis allows comparison of any two stored quantities from any measurement module in two graphs. Zoom and cursor functions are available.

Analysed quantities:

Sum of quantities sorted by analyzer SW modules, which can be selected into a graph.

 

FFT - FFT analyser

U [V] Average harmonic voltage on selected harmonic
I [A] Average harmonic current on selected harmonic
P [W] Average harmonic active power on selected harmonic
Q [VAr] Average harmonic reactive power on selected harmonic
S [VA] Average harmonic apparent power on selected harmonic
U [%] Average harmonic voltage on selected harmonic in percent (referenced to fundamental harmonic)
I [%] Average harmonic current on selected harmonic in percent (referenced to fundamental harmonic)
P [%] Average harmonic active power on selected harmonic in percent (referenced to fundamental harmonic)
Q [%] Average harmonic reactive power on selected harmonic in percent (referenced to fundamental harmonic)
S [%] Average harmonic apparent power on selected harmonic in percent (referenced to fundamental harmonic)
Umax [%] Maximum level of harmonic voltage on selected harmonic in percent (referenced to fundamental harmonic)
Imax [%] Maximum level of harmonic current on selected harmonic in percent (referenced to fundamental harmonic)
THD u [%] Average voltage total harmonic distortion (referenced to fundamental harmonic)
THD i [%] Average current total harmonic distortion (referenced to fundamental harmonic)
THD umax [%] Maximum level of voltage total harmonic distortion (referenced to fundamental harmonic)
THD imax [%] Maximum level of current total harmonic distortion (referenced to fundamental harmonic)
Frequency Average value of frequency

 

 

For all bellow mentioned quantities can be selected minimum, average or maximum value.

Power – Power and Energy monitor

Urms [V] RMS voltage
Irms [A] RMS current
P [W] Active power
P1[W] Active power on fundamental frequency
Q [Var] Reactive power
Q1 [Var] Reactive power on fundamental frequency
S [VA] Apparent power
cos j [-] Cosine phi on fundamental frequency
PF [-] Power factor (P to S ratio)
a u [%] Voltage unbalance
frequency [Hz] Fundamental frequency

 

 

Energy - Power and Energy monitor

AP [kWh] Energy active
AP1[kWh] Energy active on fundamental frequency
AQ [kVarh] Energy reactive
AQ1 [kVarh] Energy reactive on fundamental frequency
AS [kVAh] Energy apparent
AP in [kWh] Energy active consumed
AP out [kWh] Energy active generated
AQ L [kVarh] Energy reactive inductive
AQ C [kVarh] Energy reactive capacitive

 

 

For all bellow mentioned quantities can be selected minimum, average or maximum value. As addition for U, U1, I, I1, P, P1, Q1 are evaluated for original 3-phases system, for positive, negative and zero system.

Symm – Asymmetry monitor

U [V] RMS Voltage
U1 [V] RMS Voltage on fundamental frequency
I [A] RMS Current
I1[A] RMS Current on fundamental frequency
P [W] Active power
P1[W] Active power on fundamental frequency
Q1 [Var] Reactive power on fundamental frequency
U -/+ [-] Negative to positive voltage ratio
U1 -/+ [-] Negative to positive voltage ratio on fundamental frequency
I -/+ [-] Negative to positive current ratio
I1 -/+ [-] Negative to positive current ratio on fundamental frequency
U 0/+ [-] Zero to positive voltage ratio
U1 0/+ [-] Zero to positive voltage ratio on fundamental frequency
I 0/+ [-] Zero to positive current ratio
I1 0/+ [-] Zero to positive current ratio on fundamental frequency

 

 

Imped – Power Network Impedance analyzer

Z [W] Short circuit impedance
Zload re [W] Real part of load impedance
Zload im [W] Imaginary part of load impedance
Sk [MVA] Short circuit power
Ref Voltage reference level for calculation of Sk

 

 

Flicker - Flickermeter

Pst [-] Short time flicker (10minutes)
Plt [-] Long time flicker (2hours)

 

 

50160 – Voltage monitor EN 50160

Urms [V] Average voltage RMS value
Urms [%] Average voltage RMS value in percent of reference voltage
Uharm [%] Average harmonic voltage value in percent of fundamental frequency voltage
Plt [-] Long time (2hours) flicker
THD u [%] Average voltage THD value
au [%] Voltage unbalance
Usig [%] Signal voltage level in percent of fundamental frequency voltage
frequency [Hz] Fundamental frequency value

 

 

PAD – PAD recorder module

Selected channel from 16 stored general purpose analog signals

 

 

Selected channel from 16 stored general purpose analog signals

RMS – Half-period RMS U+I values monitor

Umax [V] Maximum half-period RMS voltage
Imax [A] Maximum half-period RMS current
Umin [V] Minimum half-period RMS voltage
Imin [A] Minimum half-period RMS current
I umax [A] Current in time of the maximum half-period RMS voltage
U imax [V] Voltage in time of the maximum half-period RMS current
I umin [A] Current in time of the minimum half-period RMS voltage
U imin [V] Voltage in time of the minimum half-period RMS current

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Protocols/Outputs:

  • Print to BMP file
  • Print to HTML
  • Print to printer
  • Export to ASCII
  • Export to PQDIF - external

 

 

 

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Analysis of meassured data with statistical evaluation

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Characterization:

The chosen quantity is shown in time domain, in the smaller graph, with this type of measured data analysis. The main graph is a statistical evaluation of the chosen quantity. A Histogram and cumulative distributed function of the selected quantity are displayed in this graph.

 

Analyzed quantities:

Same as with the time domain analysis.

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Protocols/Outputs:

  • Print to BMP file
  • Print to HTML
  • Print to printer
  • Export to ASCII
  • Export to PQDIF - external

 

 

 

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Measured data analysis in frequency domain

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Characterization:

Two graphs are shown again: The smaller one representing the selected quantity in time domain and the main one with the frequency spectra of the quantity.

Analysed quantities:

Overview of quantities sorted according to individual SW modules, which can be included in the protocol graph:

 

FFT - SW module of FFT harmonics and interharmonics analyzer

U [V] Mean RMS voltage value during the data aggregation interval for selected harmonic
I [A] Mean RMS current value during the data aggregation interval for selected harmonic
P [W] Active power of selected harmonic
Q [VAr] Reactive power of selected harmonic
S [VA] Apparent power of selected harmonic
U [%] Mean RMS voltage value during the data aggregation interval for selected harmonic in relation to mean RMS voltage value of the first harmonic
I [%] Mean RMS current value during the data aggregation interval for selected harmonic in relation to mean RMS current value of the first harmonic
P [%] Active power of selected harmonic in relation to active power of the first harmonic
Q [%] Reactive power of selected harmonic in relation to reactive power of the first harmonic
S [%] Apparent power of selected harmonic in relation to apparent power of the first harmonic
Umax [%] Maximal RMS voltage value during data aggregation interval for selected harmonic in relation to maximal RMS voltage value of the first harmonic
Imax [%] Maximal RMS current value during data aggregation interval for selected harmonic in relation to maximal RMS current value of the first harmonic
Harm Selected harmonic
Percentil Percentil for selection of measured values – worst measured values are excluded in each harmonic (this control defines the percentage of values to be shown)

Protocols/Outputs:

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  • Print to BMP file
  • Print to HTML
  • Print to printer
  • Export to ASCII
  • Export to PQDIF - external

 

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Analysis of data from voltage monitor according to EN 50160 standard

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Characterization:

Quality parameters of supplied electricity evaluated according to this standard are shown. It is also possible to display spectra of the first 25 harmonics voltages measured according to the standard and the list of events in the form of a histogram and chronological list.

 

Analysed quantities:

Quality parameters evaluated according to the EN 50160 standard are:

Frequency Mean 10 sec value of frequency is measured; the panel indicates minimal and maximal mean 10 sec frequency during the measured period, percentage of measured samples fitting into the 95% percentile (must be bigger than 95 percent in order to fulfill requirements of the standard), percentage of measured samples fitting into the 100% percentile (must be equal to 100 percent in order to fulfill requirements of the standard) – thresholds for setting the percentiles are derived from the nominal frequency
Urms Mean 10 min effective value of individual phases' voltages; the panel indicates minimal and maximal mean 10 min effective values during the measured interval, percentage of measured samples fitting into the 95% percentile (must be bigger than 95 percent in order to fulfill requirements of the standard) – thresholds for setting the percentile are derived from the reference voltage value
Flicker Long term Plt values on individual phases; the panel indicates maximal measured Plt value, percentage of measured samples fitting into the 95% percentile (must be bigger than 95 percent in order to fulfill requirements of the standard) – thresholds for setting the percentile are derived from the circumference of disturbance Plt=1
THD Mean 10 min value of total harmonics distortion factor for individual phases; the panel indicates maximal mean 10 min value of total harmonics distortion during the measured interval, percentage of measured samples fitting into the 95% percentile (must be bigger than 95 percent in order to fulfill requirements of the standard) – thresholds for setting the percentile are derived from the maximal allowed THD value
Unbalance Mean 10 min value of unbalance of the voltage system; the panel indicates maximal mean 10 min value of voltage unbalance during the measured time interval, percentage of measured samples fitting into the 95% percentile (must be bigger than 95 percent in order to fulfill requirements of the standard) – thresholds for setting the percentile are derived form the maximal allowed value of voltage unbalance
Signals Mean 3 sec value of modulating signal voltage evaluated for given frequency on individual phases, percentage of measured samples fitting into the 99% percentile (must be bigger than 99 percent in order to fulfill requirements of the standard) – thresholds for setting the percentile are derived from the maximal allowed signal modulating voltage
Harmonics Overall evaluation of first 25 voltage harmonics' spectras measured as mean 10 min values – detailed evaluation of the spectra is included on another panel
Total Indicates, whether all the measured quality parameters are in accordance with the standard

 

Protocols/Outputs:

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  • Print to BMP file
  • Print to HTML
  • Print to printer
  • Export to ASCII
  • Export to PQDIF - external

 

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Analysis of transient recorder data

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Characterization:

Waveform shape is specific for this type of data analysis. The data storing for this time interval is started as soon as the trigger condition is met.

Analysed quantities:

du/dt Voltage Slope
di/dt Current Slope
u(t) Immediate value of the voltage
i(t) Immediate value of the current
Urms Effective value of the voltage
Irms Effective value of the current
U har Selected harmonic of the voltage
I har Selected harmonic of the current
THD u Total harmonics distortion factor of the voltage
THD i Total harmonics distortion factor of the current
P Effective Power
P1 Effective power of the first hamronic
Q Reactive Power
Q1 Reactive Power of the first harmonic
S Apparent Power
Unsym Voltage Unbalance
PF
Cos j Power Factor

 

Protocols/Outputs:

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  • Print to BMP file
  • Print to HTML
  • Print to printer
  • Export to ASCII
  • Export to PQDIF - external

 

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Analysis of alarm data

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Characterization:

This type of analysis produces a table containing all the recorded alarms.

 

Types of alarms:

  • Frequency
  • RMS voltage
  • 1 sec voltage
  • 1 min voltage
  • 10 min voltage
  • PST
  • PLT
  • THD voltage
  • THD current
  • Symmetrical voltage
  • Symmetrical current
  • Telegrams
  • P
  • Q
  • Harmonics

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Protocols/Outputs:

 

  • Print to BMP file
  • Print to HTML
  • Print to printer
  • Export to ASCII
  • Export to PQDIF - external

 

 

 

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Analysis of the telegrams data

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Characterization:

This type of analysis produces a table containing all the recorded telegrams.

 

Analysed quantities:

Phase Phase, on which the telegram was detected
Frequency Analysed modulating frequency of the telegram
Umax Maximal effective value of the modulating voltage on the analysed frequency
Uon Mean effective value of the modulating voltage on the analysed frequency corresponding to logical 1 of the telegram
Uoff Mean effective value of the modulating voltage on the analysed frequency corresponding to logical 0 of the telegram
Imax Maximal effective value of the modulating current on the analysed frequency
Ion Mean effective value of the modulating current on the analysed frequency corresponding to the logical 1 of the telegram
Ioff Mean effective value of the modulating current corresponding to the logical 0 of the telegram
LnghtToLVB Lenght of the last valid bit
LVB Last valid bit
Telegrams Sequence of ones and zeros of the telegram

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Protocols/Outputs:

  • Print to BMP file
  • Print to HTML
  • Print to printer
  • Export to ASCII
  • Export to PQDIF - external

 

 

 

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