IEEE 1459-2010 en Definitions for the Measurement of Electric Power Quantities Under Sinusoidal Nonsinusoidal Balanced or Unbalanced Conditions《在正弦曲线 非正弦曲线 平衡和非.pdf
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1、g44g40g40g40g3g54g87g71g3g20g23g24g28g140g16g21g19g20g19g44g40g40g40g3g54g87g71g3g20g23g24g28g16g21g19g19g19g12g3g44g40g40g40g3g54g87g68g81g71g68g85g71g3g39g72g191g81g76g87g76g82g81g86g3g73g82g85g3g87g75g72g3g48g72g68g86g88g85g72g80g72g81g87g3g82g73g3g40g79g72g70g87g85g76g70g3g51g82g90g72g85g3g52g88
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3、54g83g82g81g86g82g85g72g71g3g69g92g3g87g75g72g51g82g90g72g85g3g54g92g86g87g72g80g3g44g81g86g87g85g88g80g72g81g87g68g87g76g82g81g3g68g81g71g3g48g72g68g86g88g85g72g80g72g81g87g86g3g38g82g80g80g76g87g87g72g72g44g40g40g40g22g3g51g68g85g78g3g36g89g72g81g88g72g3g49g72g90g3g60g82g85g78g15g3g49g60g3g20g19g1
4、9g20g25g16g24g28g28g26g15g3g56g54g36g3g3g20g28g3g48g68g85g70g75g3g21g19g20g19g20g23g24g28g55g48(Revision ofIEEE Std 1459TM-2010 (Revision of IEEE Std 1459-2000) IEEE Standard Definitions for the Measurement of Electric Power Quantities Under Sinusoidal, Nonsinusoidal, Balanced, or Unbalanced Conditi
5、ons Sponsor Power System Instrumentation and Measurements Committee of the IEEE Power +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. iv Copyright 2010 IEEE. All rights reserved. I
6、ntroduction This introduction is not part of IEEE Std 1459-2010, IEEE Standard Definitions for the Measurement of Electric Power Quantities Under Sinusoidal, Nonsinusoidal, Balanced, or Unbalanced Conditions. The definitions for active, reactive, and apparent powers that are currently used are based
7、 on the knowledge developed and agreed on during the 1940s. Such definitions served the industry well, as long as the current and voltage waveforms remained nearly sinusoidal. Important changes have occurred in the last 50 years. The new environment is conditioned by the following facts: a) Power el
8、ectronics equipment, such as Adjustable Speed Drives, Controlled Rectifiers, Cycloconverters, Electronically Ballasted Lamps, Arc and Induction Furnaces, and clusters of Personal Computers, represent major nonlinear and parametric loads proliferating among industrial and commercial customers. Such l
9、oads have the potential to create a host of disturbances for the utility and the end-users equipment. The main problems stem from the flow of nonactive energy caused by harmonic currents and voltages. b) New definitions of powers have been discussed in the last 30 years in the engineering literature
10、 (Filipski and Labaj B9a). The mechanism of electric energy flow for nonsinusoidal and/or unbalanced conditions is well understood today. c) The traditional instrumentation designed for the sinusoidal 60/50 Hz waveform is prone to significant errors when the current and the voltage waveforms are dis
11、torted (Filipski and Labaj B9). d) Microprocessors and minicomputers enable todays manufacturers of electrical instruments to construct new, accurate, and versatile metering equipment that is capable of measuring electrical quantities defined by means of advanced mathematical models. e) There is a n
12、eed to quantify correctly the distortions caused by the nonlinear and parametric loads, and to apply a fair distribution of the financial burden required to maintain the quality of electric service. This standard lists new definitions of powers needed for the following particular situations: When th
13、e voltage and current waveforms are nonsinusoidal When the load is unbalanced or the supplying voltages are asymmetrical When the energy dissipated in the neutral path due to zero-sequence current components has economical significance The new definitions were developed to give guidance with respect
14、 to the quantities that should be measured or monitored for revenue purposes, engineering economic decisions, and determination of major harmonic polluters. The following important electrical quantities are recognized by this standard: The power frequency (60/50 Hz or fundamental) of apparent, activ
15、e, and reactive powers. These three basic quantities are the quintessence of the power flow in electric networks. They define what is generated, transmitted, distributed, and sold by the electric utilities and bought by the end users. This is the electric energy transmitted by the 60/50 Hz electroma
16、gnetic field. In poly-phase systems, the power frequency positive-sequence powers are the important dominant quantities. The power frequency positive-sequence power factor is a key value that helps determine and adjust the flow of power frequency positive-sequence reactive power. The aThe numbers in
17、 brackets correspond to those of the bibliography in Annex C. v Copyright 2010 IEEE. All rights reserved. fundamental positive-sequence reactive power is of utmost importance in power systems; it governs the fundamental voltage magnitude and its distribution along the feeders and affects electromech
18、anical stability as well as the energy loss. The effective apparent power in three-phase systems is eeeIVS 3= , where eV and eI are the equivalent voltage and current. In sinusoidal and balanced situations, Seis equal to the conventional apparent power IVIVSn AAA33 = , where nVAand AAV are the line-
19、to-neutral and the line-to-line voltage, respectively. For sinusoidal unbalanced or for nonsinusoidal balanced or unbalanced situations, Seallows rational and correct computation of the power factor. This quantity was proposed in 1922 by the German engineer Buchholz B1 and in 1933 was explained by t
20、he American engineer Goodhue B11. The non-60 Hz or nonfundamental apparent power is SN(for brevity, 50 Hz power is not always mentioned). This power quantifies the overall amount of harmonic pollution delivered or absorbed by a load. It also quantifies the required capacity of dynamic compensators o
21、r active filters when used for nonfundamental compensation alone. Current distortion power DIidentifies the segment of nonfundamental nonactive power due to current distortion. This is usually the dominant component of SN. Voltage distortion power DVseparates the nonfundamental nonactive power compo
22、nent due to voltage distortion. Apparent harmonic power SHindicates the level of apparent power due to harmonic voltages and currents alone. This is the smallest component of SNand includes the harmonic active power PH. To avoid confusion, it was decided not to add new units. The use of the watts (W
23、) for instantaneous and active powers, volt-amperes (VA) for apparent powers, and (var) for all the nonactive powers maintains the distinct separation among these three major types of powers. There is not yet available a generalized power theory that can provide a simultaneous common base for Energy
24、 billing Evaluation of electric energy quality Detection of the major sources of waveform distortion Theoretical calculations for the design of mitigation equipment such as active filters or dynamic compensators This standard is meant to provide definitions extended from the well-established concept
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