Power-Limiting Reactor Concordance
Power-Limiting Reactor
Section titled “Power-Limiting Reactor”Concordance status: generated from processed OCR/PDF text. Treat these as source-location aids until each passage is checked against the scan.
70 hits
Total text matches across processed Steinmetz sections.
7 sources
Sources containing at least one matched alias.
15 sections
Chapters, lectures, sections, or report divisions with matches.
Matched Aliases
Section titled “Matched Aliases”Power limiting reactor, current limiting reactor, power limiting reactor, power-limiting reactor, power-limiting-reactor, reactor
Source Distribution
Section titled “Source Distribution”| Source | Hits | Sections |
|---|---|---|
| Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co. | 21 | 4 |
| Theory and Calculation of Electric Circuits | 19 | 3 |
| Theory and Calculation of Transient Electric Phenomena and Oscillations | 16 | 4 |
| Theoretical Elements of Electrical Engineering | 10 | 1 |
| Engineering Mathematics: A Series of Lectures Delivered at Union College | 2 | 1 |
| Theory and Calculation of Alternating Current Phenomena | 1 | 1 |
| Theory and Calculation of Electric Apparatus | 1 | 1 |
Section Hits
Section titled “Section Hits”Representative Source Snippets
Section titled “Representative Source Snippets”Chapter 6: Oscillating Currents, - 12 hit(s)
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... t means that reactors, condensers, and resistors are rated in kilowatts or kilo volt-amperes, just as other electrical appa- ratus, and this rating characterizes their size within the limits of design, while a statement like "a condenser of 10 mf. " or "a reactor of 100 mh." no more characterizes the size than a Statement like "an alternator of 100 amperes capacity" or "a transformer of 1000 volts. " A bulk of 1 cu. ft. in condenser can give about 5 to 10 kv-amp. at 60 cycles. Hence, 100 kv-amp. constitutes a ver ...Apparatus Section 9: Alternating-current Transformer: Reactors - 10 hit(s)
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IX. Reactors (Reactive Coils, Reactances) 129. The reactor consists of one electric circuit interlinked with a magnetic circuit, and its purpose is, not to transform power, but to produce wattless or reactive power, that is, lagging current, or what amounts to the same, leading vo ...Chapter 16: Load Balance Of Polyphase Systems - 10 hit(s)
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... sformation. Thus mechanical momentum acts as energy-storing device in the use as phase bal- ancer, of the induction or the synchronous machine. Electrically, energy is stored by inductance and by capacity. The question then arises, whether by the use of a reactor, or a condenser, con- nected to a suitable phase of the system, an unequally loaded polyphase system can be balanced, so as to give constant power during the cycle. In interlinked polyphase circuits, such as the three-phase sys- tem, with unbalanced loa ...Mathematical Appendix 5: Appendix: Synchronous Operation - 9 hit(s)
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... ism with each other. If then the load distribution between the alternators differs from the distribution of their driving power, electric power is transferred over the impedance z, current flows and a phase displacement 2co occurs between the two sides of the reactor z. In this case, the phase angle w is constant, and not periodically fluctuating as in A, but varies with changes of distribution of load ; the equations, however, are the same as in A, except that now w is constant, and the voltages ei and e 2 are the termin ...Report Record 4: Record of Four Troubles - 6 hit(s)
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... rs in Fisk B and in Northwest Station did not pull into step with each other, but remained out of synchronism; the voltage at the busbars of these two stations remained practically zero, and an excessive current fed into Fisk B from Quarry Street, heating the power limiting reactor B. f ) After 7 minutes, the tie line between Fisk Street B and Quarry Street, that is, the power limiting reactor B, was opened, and Quarry Street and Fisk A, came back to normal. About the same time, the 30,000 KW machine in Northwest Station began to lose i ...Chapter 15: Constant-Voltage Series Operation - 6 hit(s)
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... rcuit. n = number of consuming devices (lamps) in series. p = fraction of burned-out lamps. g a= conductance of lamp. (15) 302 ELECTRIC CIRCUITS and let 6 1 = shunted susceptance with the lamp in circuit, that is, exciting susceptance of reactor or auto- transformer, and y = \/g^ + bi^ = admittance of complete consuming device. 62 = shunted susceptance with the lamp burned out and let c = — = exciting current as fraction of load ^ current: c < 1. a = ^- = saturation factor of reactor or ...Report Section 3: Discussion of Recommendations - 5 hit(s)
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... he 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 synchronous machines in the substations while full steam supply is still on, the synchronizing power coming over the power limiting ...Chapter 8: Shaping Of Waves By Magnetic Saturation - 3 hit(s)
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... tion, for / — 20, may possibly be due to an inaccuracy in the hysteresis cycle of Fig. 55, a too great steepness near the zero value, rather than being actual.) It is interesting to realize, that when measuring the reactance of a closed magnetic circuit reactor by voltmeter and ammeter readings, it is not permissible to vary the voltage by series resist- ance, as this would give values indefinite between i, and Xc, de- 136 ELECTRIC CIRCUITS pending on the relative amount of resistance. To get Xp, the gen ...Chapter 3: Trigonometric Series - 2 hit(s)
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... t. io6. Example lo. An alternating-current generator, of generated e.m.f. e = 2500 volts, internal resistance ro = 0.25 ohms, and synchronous reactance a:o = 10 ohms, is loaded by a circuit comprising a resistor of constant resistance r = 20 ohms, and a reactor of reactance x in series with the resistor r. What value of reactance x gives maximum output? If i = current of the alternator, its power output is P-=n2 = 20i2; (26) 162 ENGINEERING MATHEMATICS. the total resistance is r + ro = 20.25 ohms; the tota ...Chapter 9: Divided Circuit - 2 hit(s)
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... directly com- parable with the phenomena on a 60-cycle circuit. A better conception of the size or magnitude of inductance and capacity is secured. Since inductance and capacity are mostly observed and of importance in alternating-current cir- cuits, a reactor having an inductive reactance of x ohms and i amperes conveys to the engineer a more definite meaning as regards size: it has a volt-ampere capacity of tfx, that is, the approximate size of a transformer of half this capacity, or of a ^2x — -watt trans ...Report Section 2: Recommendations - 1 hit(s)
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... 4, 5 and 6, have been carried out I would recommend, in case the voltage of a station section disappears, as result of a short circuit at or near the station, and if the voltage does not promptly come back after the clearing of the short circuit, to open the power limiting reactor or reactors which connect this station section with the rest of the system, and thereby isolate it. Then, as soon as the voltage has recovered, the isolated station should again be syn- chronized in with the rest of the system. If, after thus isolating the [[ ...Chapter 25: Distortion Of Wave-Shape And Its Causes - 1 hit(s)
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... tance, with a sine wave current of 7.07 effective, so is 9 91 ' = 7:07 = l-^O' while the same reactance, with a sine wave e.m.f. of 7.07 effective, in A, gives the impedance. The conclusion is that an iron-clad magnetic circuit is not suitable for a reactor, since even below saturation (as above assumed) it produces very great wave-shape distortion. As discussed before, the insertion of even a small air-gap into the magnetic circuit makes the current wave nearly coincide in phase and in shape with the wave ...Chapter 22: Unipolar Machines - 1 hit(s)
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... , the total voltage induced in a turn must always be zero, that is, the voltage, if periodical, must be alter- nating, regardless how the electromagnetic induction takes place, whether the turn is stationary or moving, as a part of a machine, transformer, reactor or any other electromagnetic induction device. Thus continuous-voltage induction in a closed turn is impossible, and the coil-wound unipolar machine thus a fallacy. Continuous induction in the unipolar machine is pos- sible only because the circuit is not ...Chapter 1: General Equations - 1 hit(s)
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... gation of electric circuits, these four constants, r, L, g, C, usually are assumed as located separately from each other, or localized. Although this assumption can never be per- fectly correct, — for instance, every resistor has some inductance and every reactor has some resistance, — nevertheless in most cases it is permissible and necessary, and only in some classes of phenomena, and in some kinds of circuits, such as high-frequency phenomena, voltage and current distribution in long-distance, high-potential ci ...Chapter 9: Inductive Discharges - 1 hit(s)
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... ting-current generator 82 Reactance, effective, of external field . . 406 INDEX 569 PAGE Reactance, effective (continued), of internal field 406 of armature reaction 200 mutual inductive 143 Reaction, armature, and short-circuit current 199 Reactor, size and rating 69 Rectification, and commutation 222 arc 249 by periodic transient terms 22, 221 constant-current 230, 242 potential 230, 236 mechanical 229 open-circuit 230 polyphase 230 quarter-phase 230, 242 reversal or change of circ ...