MTE Harmonic Calculator — IEEE 519-2014

MTE

AN SL POWER ELECTRONICS COMPANY

IEEE 519 Harmonic Calculator

IEEE 519-2014 Compliance Tool
TDD & THVD Analysis

1 — Project & System Setup

2 — Load Entry

3 — Results Preview

4 — Report

Project Information

MTE IEEE 519 Harmonic Study Title

Client Name

Report Submitted To

Report By

Project Notes

Setup required to evaluate system harmonics and compliance:

Select motors by horse power or Kilo watts used in this report

Motor sizes entered as HP throughout this report

1 Utility Provided Ratings OPTIONAL

These are optional if harmonic calculation is based on PCC transformer secondary. If provided, utility ISC will be used when PCC is at the primary (Section 3).

1.1 Utility Transmission Line Voltage

Volts

1.2 Utility Provided Short Circuit Current

Amps

1.3 Utility Provided Frequency

2 Data for Branch Transformer Feeding User

2.1 Transformer Rating in KVA

kVA

2.2 Transformer Impedance Input Mode

2.3 Transformer Secondary Voltage

Volts

3 Point of Common Coupling (PCC)

Determine the PCC where other customers may be connected. Only one location should be YES.

3.1 Primary of Utility Transformer (High Voltage Side) Uses utility ISC from Section 1 for ISC/IL ratio

3.2 Secondary of Utility Transformer (Low Voltage Side) Uses transformer impedance from Section 2 for ISC/IL ratio

3.3 Will Generator Power Be Used?

4 Total Linear Motor Loads (0.8 Power Factor)

These loads use across-the-line starting or soft starters. They have 0.8 PF induction characteristics and do not inject harmonics.

4.1 Total Across-the-Line Linear Loads

4.2 Total Motors on Soft Starters

4.3 Linear Loads on Generator? Include linear amps in generator TDD calc

5 Non-Linear VFD Motor Drive Loads

⚠

STEP 1 — Enter a Quantity first

Set the Qty column to activate a row. Rows with Qty = 0 are excluded from all calculations. Typing in the HP or KW field will auto-set Qty to 1.

HP / KW: Enter the drive size. Combine drives of the same type and size into one row using Qty.

Two config dropdowns: Set Initial VFD Configuration for existing state, then Proposed Mitigation to model an improvement. The "req TDD" bar compares both.

Ref	Qty	Load Notes	HP	% Load	Initial VFD Configuration	On Gen?	Proposed Added Mitigation

Initial Harmonic Findings at PCC

—

Initial TDD

req TDD limit

—

IEEE limit %

—

Proposed TDD

6 Savings Calculator

If the utility charges for VA (apparent power), an actual monthly savings can be calculated for added filtering. Select YES to enter rate information.

Run Savings Calculator?

6.1 Utility Rate ($/kWh)

$/kWh

6.2 Operating Days per Week

Days

6.3 Factory Operating Shifts per Day

Shifts

kVA — Initial

—

Apparent power (initial)

kVA — Proposed

—

Apparent power (proposed)

kVA Reduction

—

From filtering

Est. Annual Savings

—

Enter rate & hours above

Live Results Preview

Disclaimer:
The information contained here is an estimation without warranty of any kind and does not constitute a guarantee of filter performance, measurement or any standard of conformity. Numerous outside factors can influence the harmonics present on a power system, including other equipment in close proximity within the plant and other neighboring plants. This can include, but is not limited to, frequency converters, nonlinear loads and/or other equipment. The calculated current and voltage harmonics shown in this Report may contain inaccuracies and is for estimation purposes only.

IEEE 519:
The following calculations in this report are based on the guidelines set forth in IEEE 519-2014 namely THVD voltage distortion limits of table 1 and TDD current distortion limits in Table 2. Within the IEEE 519 document Section 5 recommendations state: "The recommended limits in this clause only apply at the point of common coupling and should not be applied to either individual pieces of equipment or at locations within a users facility."

Loading and Harmonic Calculation:
Load calculations for harmonic currents are based on motor HP or KW and use standard PF and efficiency at the nominal line voltage to determine a value for fundamental drive current. Typical tabular harmonic THID % are used to model harmonic current which normally could be measured at the input of a six pulse drive. Again these are estimates based on typical lab data at various drive inputs.

Tip: In the print dialog, enable Background graphics and set Scale to 140% for best results.