Theory Section 16: Phase Control of Transmission Lines
Research workbench, not a finished commentary page.
This page is generated from processed source text and candidate catalogs. It exists to help researchers decide what to verify, promote, and deeply decode next.
Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theoretical Elements of Electrical Engineering |
| Year | 1915 |
| Section ID | theoretical-elements-electrical-engineering-section-16 |
| Location | lines 6222-6813 |
| Status | candidate |
| Word Count | 1806 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”16. PHASE CONTROL OF TRANSMISSION LINES 76. If in the receiving circuit of an inductive transmission line the phase relation can be changed, the drop of voltage in the line can be maintained constant at varying loads or even decreased with increasing load; that is, at constant generator voltage the transmission can be compounded for constant voltage at the receiving end, or even over-compounded for a voltage increasing with the load. 1. Compounding of Transmission Lines for Constant Voltage Let r = resistance, x = reactance of the transmission line, CQ = voltage impressed upon the beginning of the line, e = vol- tage received at the end of end line. PHASE CONTROL OF TRANSMISSION LINES 91 Let i = power current in the receiving circuit; that is, P — ei = transmitted power, andSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Impedance / reactance
Section titled “Impedance / reactance”... nerator voltage the transmission can be compounded for constant voltage at the receiving end, or even over-compounded for a voltage increasing with the load. 1. Compounding of Transmission Lines for Constant Voltage Let r = resistance, x = reactance of the transmission line, CQ = voltage impressed upon the beginning of the line, e = vol- tage received at the end of end line. PHASE CONTROL OF TRANSMISSION LINES 91 Let i = power current in the receiving circuit; that is, P — e ...Complex quantities
Section titled “Complex quantities”... the receiving circuit; that is, P — ei = transmitted power, and ii = reactive current produced in the system for controlling the voltage. i\ shall be considered positive as lagging, negative as leading current. Then the total current, in symbolic representation, is / = i - jii; the line impedance is Z = r + jx, and thus the e.m.f. consumed by the line impedance is Ei = ZI = (r + jx) (i - jii) = ri + jrii + jxi - J2xii; and substituting f — — 1, Ei = (ri + xii) ...Field language
Section titled “Field language”... (r2 + x2) + 2 iQre0. (13) This equation gives i'o as function of io, e0, r, x. If now the reactive current i\ varies as linear function of the power current i, as in case of compounding by rotary converter with shunt and series field, it is Substituting this value in the general equation (eo + n0)2 + *V = (e + ri + a»i)» + (rii - xz)2 gives e as function of i; that is, gives the voltage at the receiving end as function of the load, at constant voltage 60 a ...Magnetism
Section titled “Magnetism”... . Between i = 0 and i = io, e > eo, and the current is lagging. Above i = io, e < eQ, and the current is leading. By the reaction of the variation of e from eo upon the receiving apparatus producing reactive current z'i, and by magnetic satura- tion in the receiving apparatus, the deviation of e from eo is reduced, that is, the regulation improved. 2. Over-compounding of Transmission Lines 78. The impressed voltage at the generator end of the line was found in the preced ...Chapter-Local Concept Hits
Section titled “Chapter-Local Concept Hits”| Concept Candidate | Hits In Section | Status |
|---|---|---|
| Light | 1 | seeded |
Chapter-Local Glossary Hits
Section titled “Chapter-Local Glossary Hits”| Term Candidate | Hits In Section | Status |
|---|---|---|
| No chapter-local term hits yet | - | - |
Equation Candidates
Section titled “Equation Candidates”| Candidate ID | OCR / PDF-Text Candidate | Source Location |
|---|---|---|
| No chapter-local candidates yet | - | - |
Figure Candidates
Section titled “Figure Candidates”| Candidate ID | OCR / PDF-Text Candidate | Source Location |
|---|---|---|
| No chapter-local candidates yet | - | - |
Hidden-Gem Quote Candidates
Section titled “Hidden-Gem Quote Candidates”| Candidate ID | Candidate Passage | Source Location |
|---|---|---|
| No chapter-local candidates yet | - | - |
Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
- Complex quantities: Track how Steinmetz preserves geometric rotation and quadrature while translating the same operation into symbolic form.
- Field language: Read for whether field language is mechanical, geometrical, causal, descriptive, or simply a convenient engineering model.
- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
- Radiation / light: Compare the chapter’s radiation vocabulary with modern electromagnetic radiation, spectral frequency, wavelength, absorption, and illumination engineering.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Field language: Field-pressure or field-gradient interpretations can be explored here only after the explicit source passage and modern engineering translation are kept distinct.
- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
Promotion Checklist
Section titled “Promotion Checklist”- Open the full source text and the scan or raw PDF.
- Verify the chapter boundary and surrounding context.
- Promote exact quotations only after checking the source image.
- Move mathematical candidates into canonical equation pages only after formula typography is corrected.
- Move diagram candidates into the diagram archive only after image extraction, crop verification, and manifest creation.
- Keep Steinmetz wording, modern translation, and ether-field interpretation in separate labeled layers.