Description
Accept sourceConvention and targetConvention as load-positive or generator-positive.
Sinusoidal electrical calculations need a common frequency, phase reference and RMS or peak convention. Phasor sums, complex power and composite RMS describe different operations; a sign label alone does not establish a physical connection or waveform.
Accept sourceConvention and targetConvention as load-positive or generator-positive.
When to use this tool
Use Electricity: Reactive Power Sign Convention Crosswalk when checking a stated phasor, power or RMS convention.
How to use the tool and how it works
- Enter reactivePower, sourceConvention, targetConvention. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read result. Expand result to inspect the returned fields.
Accept sourceConvention and targetConvention as load-positive or generator-positive. Preserve reactivePower when the conventions match and negate it when they differ.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| reactivePower | Reactive Power | Required. Finite number. |
| sourceConvention | Source Convention | Required. Text; one of "load-positive", "generator-positive". Implementation limit: 8192 Unicode code points and 16384 UTF-16 code units. |
| targetConvention | Target Convention | Required. Text; one of "load-positive", "generator-positive". Implementation limit: 8192 Unicode code points and 16384 UTF-16 code units. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| result | Object containing the named calculated members below. | Required. Object. |
| result.reactivePower | Reactive Power | Calculated result member: number. |
{
"input": {
"reactivePower": 3,
"sourceConvention": "load-positive",
"targetConvention": "generator-positive"
},
"output": {
"result": {
"reactivePower": -3
}
}
}Limitations and assumptions
- This flips one supplied sign convention, not voltage/current references or a physical measurement. Unit, power-flow direction and instrument definitions require separate agreement.
- Outputs are nested inside result. Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use compatible measured waveforms and a complete circuit or harmonic model when signals are distorted, references differ or practical limits matter.
References
Similar or alternative tools
- Phasor Conjugate Power Sign Check
Compute real and reactive power from voltage and conjugate-current phasor components.
- Electricity: Complex Power Real Imaginary Pair
Return realPower = voltageReal*currentReal+voltageImaginary*currentImaginary and reactivePower = voltageImaginary*currentReal-voltageReal*currentImaginary.