Synchronizing power Concordance
Synchronizing power
Section titled “Synchronizing power”Concordance status: generated from processed OCR/PDF text. Treat these as source-location aids until each passage is checked against the scan.
78 hits
Total text matches across processed Steinmetz sections.
7 sources
Sources containing at least one matched alias.
11 sections
Chapters, lectures, sections, or report divisions with matches.
Matched Aliases
Section titled “Matched Aliases”Synchronizing power, synchronizing-power
Source Distribution
Section titled “Source Distribution”| Source | Hits | Sections |
|---|---|---|
| Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co. | 44 | 4 |
| Theory and Calculation of Electric Circuits | 8 | 1 |
| Theory and Calculation of Alternating Current Phenomena | 7 | 2 |
| Theory and Calculation of Alternating Current Phenomena | 6 | 1 |
| Theory and Calculation of Alternating Current Phenomena | 6 | 1 |
| Theory and Calculation of Electric Apparatus | 5 | 1 |
| Theoretical Elements of Electrical Engineering | 2 | 1 |
Section Hits
Section titled “Section Hits”Representative Source Snippets
Section titled “Representative Source Snippets”Mathematical Appendix 5: Appendix: Synchronous Operation - 24 hit(s)
Open source text | Open chapter workbench
... n a sin 2a> =- cos a cos w. 2z 2z The second term: E 2 p'Y'= - cos a. cos a> has the same sign for negative w, that is, when the machine is lagging, as for positive w when the machine is leading, thus it represents no energy transfer between the machines. The synchronizing power, or energy transfer during the synchro- nizing oscillations of two alternators, which are out of phase but in synchronism, thus is given by the expression: E 2 P=- sin a sin 2co (6) Thus, the synchronizing power p, is a maximum, and is : _E 2 . for a = 90 deg ...Report Record 4: Record of Four Troubles - 10 hit(s)
Open source text | Open chapter workbench
... rge a part of the entire system. It is dangerous, as Fisk B and Northwest combined give too large a power for safe handling under all emergencies. Furthermore, due to the connection between these stations being practically all resistance and no reactance, the synchronizing power between Fisk B and Northwest must be small, and when synchronism is once lost under short circuit, etc., trouble must be anticipated in these stations pulling into synchronism with each other. The interference between Fisk A, Quarry Street and Fisk B sections ...Report Section 3: Discussion of Recommendations - 8 hit(s)
Open source text | Open chapter workbench
... eir purposes, these reactors must be fairly large, and the value of 1.75 ohms used in the power limiting busbar reactors of the Commonwealth Edison Company of Chicago, is by no means too high. Necessarily, however, these power limiting reactors also limit the synchronizing power be- tween the station sections. Thus if in a station section as Fisk Street A, which is connected by one power limiting reactor to the rest of the system, full load of 60,000 KW is suddenly thrown off as by a short circuit at the busbars dropping out the sync ...Chapter 11: Instability Of Circuits: Induction And Syn Chronous Motors - 8 hit(s)
Open source text | Open chapter workbench
... ng to the load, would be — or may ap- proximately be assumed as — proportional to the position dis- placement, p, but with reverse sign, positive for acceleration when p is negative or behind the normal position, negative or retarding when p is ahead. The synchronizing power, that is, the power exerted by the machine to return to the normal position, then is INSTABILITY OF CIRCUITS 211 derived by multiplying —p with v, and is shown dotted as Wj in Fig. 104. As seen, it has a double-frequency alternation with zero as a ...Chapter 23: Synchronizing Alternators - 6 hit(s)
Open source text | Open chapter workbench
... running in synchronism, nearly all types of ma- chines will operate satisfactorily; a medium amount of armature 294 ALTERNATING-CURRENT PHENOMENA reaction is preferable, however, such as is given by modern alter- nators— not too high to reduce the synchronizing power too much, nor too low to make the machine unsafe in case of accident, such as falling out of step, etc. If the armature reaction is very low, an accident — such as a short-circuit, falling out of step, opening of the field circuit, etc. — may destroy th ...Chapter 17: Synchbonizino Aiitebkatobs - 6 hit(s)
Open source text | Open chapter workbench
... pplies in getting out of step. 172. When running in synchronism, nearly all types of machines will operate satisfactorily ; a medium amount of armature reaction is preferable, however, such as is given by modern alternators — not too high to reduce the synchronizing power too much, nor too low to make the machine unsafe in case of accident, such as falling out of step, etc. If the armature reaction is very low, an accident, — such as a short circuit, falling out of step, opening of the field circuit, etc., — may destroy ...Chapter 18: Synchronizing Alternators - 6 hit(s)
Open source text | Open chapter workbench
... pplies in getting out of step. 193. When running in synchronism, nearly all types of machines will operate satisfactorily ; a medium amount of armature reaction is preferable, however, such as is given by modern alternators — not too high to reduce the synchronizing power too much, nor too low to make the machine unsafe in case of accident, such as falling out of step, etc. If the armature reaction is very low, an accident, — such as a short circuit, falling out of step, opening of the field circuit, etc., — may destroy ...Chapter 8: Synchronizing Induction Motors - 5 hit(s)
Open source text | Open chapter workbench
... their mechanical connection 159 100 ELECTRICAL APPARATUS sufficiently flexible, as by belting, etc., bo that the motors can drop into exact step with each other and maintain step by their synchronising power. It is of interest, then, to examine the synchronizing power of two induction motors which are connected in multiple with their secondaries on the same rheostat and operated from the same primary impressed voltage. 95. Assume two equal induction motors with their primaries connected to the same voltage, supply an ...Report Section 2: Recommendations - 2 hit(s)
Open source text | Open chapter workbench
... nd the feeder directly involved. 4.) Install a power limiting busbar reactance between the two sec- tions of Fisk Street Station, so as to tie the three station sections : Fisk Street A, Quarry Street and Fisk B, together into a ring. This should increase the synchronizing power between these stations. It should also guard against the system being cut into two parts out of synchron- ism with each other, in case that a short circuit at the busbars of an intermediary section (Quarry Street or Fisk Street B), drops the volt- age of this ...Apparatus Section 15: Synchronous Machines: Fluctuating Cross Currents in Parallel Operation - 2 hit(s)
Open source text | Open chapter workbench
... e regulation undesirable. By the transfer of energy between the machines the pulsations of frequency, and thus the cross currents, are reduced somewhat. Very high armature reaction is objectionable also, since it reduces the synchronizing power, that is, the tendency of the machines to hold each other in step, by reducing the energy transfer be- tween the machines. As seen herefrom, the problem of parallel operation of alternators is al- most entirely a problem o ...Chapter 37: Quarter-Phase System - 1 hit(s)
Open source text | Open chapter workbench
... tion motor, 223 single-phase induction motor, 252 Susceptance, 55 of circuit with inductive line, 82 480 INDEX Susceptance, effective, 112 Susceptivity, dielectric, 153, 160 Symbolic expression of power, 181 Symmetrical polyphase system, 396 Synchronizing power of alternators, 294 Synchronous condenser, 339 converter for phase control, 98 impedance of alternator, 277 machine as shunted susceptance, 96 motor, fundamental equation, 316 for phase control, 98 supplied by distorted wave, 389 reactance of a ...