Digital Flickermeter

Implement digital flickermeter as described in IEC 61000-4-15 standard

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Libraries:
Simscape / Electrical / Specialized Power Systems / Sensors and Measurements

Description

The Digital Flickermeter block implements a digital flickermeter as described in the IEC 61000-4-15 standard. The model implements the first four modules of the design. The statistical analysis (module 5) is implemented by an external function for offline analysis of recorded simulation signal.

Note

You must have a Control System Toolbox™ license to use the Digital Flickermeter block.

Examples

Flickermeter Statistical Analysis Module

A method to compute short-term flicker severity of a phase-to-ground voltage taken from one feeder of a given remote community.

• Open Model

Flickermeter on a Distribution STATCOM

A flickermeter model designed according to functional specifications of the international standard IEC 6100-4-15 [1].

• Open Model

Ports

Input

enable — Option to enable flicker measurement

1 | 0

Set this input to 1 to enable the flicker measurement. The flickermeter is normally enabled after a given period of time, when the analyzed signal (input U) is stable.

u — Analyzed signal

Analyzed signal.

Output

S5 — Instantaneous flicker sensation

Instantaneous flicker sensation measured for the analyzed signal.

m — Measurement signal

vector

This output contains these measurements:

• Output 1: Half-cycle, rms-normalized voltage (pu)

• Output 2: Weighted voltage fluctuation

• Output 3: Square root of Output_5

• Output 4: One-minute dose (integral) of instant perception

• Output 5: Instantaneous flicker sensation (Output S5)

• u: The analyzed signal

• Init: initialization period time

Parameters

To edit block parameters interactively, use the Property Inspector. From the Simulink^® Toolstrip, on the Simulation tab, in the Prepare gallery, select Property Inspector.

Open statistical analysis — Open statistical tool

Opens the Statistical Analysis of Instantaneous Flicker Level module tool.

Network frequency — Frequency of the analyzed signal

60 Hz (default) | 50 Hz

Frequency of the analyzed signal. Choose between 60 Hz and 50 Hz.

Nominal input phase voltage (Vrms) — Nominal voltage value of analyzed signal

25e3/sqrt(3) (default)

Nominal voltage value of the analyzed signal, in volts rms.

Maximum input voltage (pu) — Maximum input voltage value of input voltage adaptor

5.0 (default)

Maximum input voltage value of the input voltage adaptor (module 1), in per unit.

Maximum instantaneous sensation (pu) — Maximum value of instantaneous flicker sensation

1000 (default)

Maximum value of the instantaneous flicker sensation measured by the block, in per unit.

Sample time (s) — Sampling rate

0.001 (default)

Sampling rate used to compute the instantaneous flicker sensation.

Scaling factor for sensation perceptibility — Scaling factor of flickermeter for measuring sensation perceptibility

1.24e6 (default)

Scaling factor of the flickermeter for measuring the sensation perceptibility.

References

[1] Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques – Section 15: Flickermeter – Functional and design specifications.,IEC-61000-4-15, 2003-02.

[2] Gutierrez, J. J., J. Ruiz, A. Lazkano, and L. A. Leturiondo. “Measurement of Voltage Flicker: Application to Grid-connected Wind Turbines.” In Advances in Measurement Systems, edited by Milind Kr Sharma, 365–380. InTech, DOI: 10.5772/8731, 2010. Available from: http://www.intechopen.com/books/advances-in-measurement-systems/measurement-of-voltage-flicker-application-to-grid-connected-wind-turbines.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2015b