An integrated control device for power quality
A technology for power quality and power grids, applied in harmonic reduction devices, flexible AC transmission systems, and AC networks to reduce harmonics/ripples, etc., can solve the problem of active harmonic control without high-voltage direct-mounted distribution network reports And other issues
Active Publication Date: 2014-10-22
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology
However, the current research on hybrid compensation technology mainly focuses on reactive power compensation on the low-voltage side, and there is no report on the use of active harmonic control in high-voltage direct-mounted distribution networks.
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[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0053] as attached Image 6 To attach Figure 9 As shown in , a specific embodiment of an integrated power quality management device of the present invention is given, and the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0054]Comprehensive compensation of reactive power, harmonics and negative sequence for 6kV, 10kV, 35kV, 55kV and 66kV high-voltage system loads requires ...
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The invention discloses an integrated governance device for electric energy quality. The integrated governance device comprises a static var generator and a static var compensator; the static var compensator comprises a fixed compensator and a thyristor control electric reactor; the static var generator, the fixed compensator and the thyristor control electric reactor are connected on a power grid between an electric network source and a load in parallel; each static var generator comprises one or more than two H-bridge units connected in series; direct current support capacitors are connected to two ends of the H-bridge units in parallel; each fixed compensator comprises a capacitor and an electric reactor which are connected in series; each phase of thyristor control electric reactor comprises a phase-control reactor and a controllable valve body composed of one or more than two reverse parallel thyristors connected in series, and the controllable valve body is connected with the phase-control reactor in series. The device not only can compensate as to idle work, but also can achieve the compensation of a harmonic wave and a negative sequence. Meanwhile, the idle work and harmonic wave are continuously and adjustably compensated at the high-voltage side, and no transformer is led, so that the compensation speed is fast.
Description
technical field [0001] The invention relates to an electric energy management device applied in the field of electric power system, in particular to a direct-mounted integrated power quality control device (High Voltage Suspend Hybrid Compensator, HVSHC) applied to a high-voltage distribution network. Background technique [0002] The power quality of the power supply and distribution system is directly related to the stability of the power system, the safety of electrical equipment, and whether it is economical to use electricity. With the increasing use of power electronic devices and sensitive loads, power quality issues have become the primary technical issue concerned by the international power supply community, which is mainly reflected in voltage fluctuations, harmonics, flicker, etc., as well as reactive power and load in current. order, the influence of harmonic components, etc. Modern power quality problems are caused by the application of power electronics techno...
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IPC IPC(8): H02J3/18H02J3/01
CPCY02E40/12Y02E40/10Y02E40/40
Inventor 冯江华张定华王卫安张志学刘华东刘彤蓝德劭邱岳烽
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST