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Distribution type integrated electric energy quality regulator

A power quality adjustment and distributed technology, applied in the direction of reactive power adjustment/elimination/compensation, reactive power compensation, etc., can solve the problems of high cost and different working methods

Active Publication Date: 2005-01-05
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The control object of the above invention is a static var compensator, and its cost is very high. However, the control object of our invention is a capacitor. The two work in different ways, and the price is very different.

Method used

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  • Distribution type integrated electric energy quality regulator
  • Distribution type integrated electric energy quality regulator
  • Distribution type integrated electric energy quality regulator

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0031] The measurement circuit includes: three current transformers SCT204A and three voltage transformers SPT204A coupled with the power grid, each input terminal is respectively connected to the output terminals of the above-mentioned transformers through a negative feedback operational amplifier LM324 through resistance reverse connection, and the other The negative feedback operational amplifier LM324 used for level conversion, its input terminal is reversely connected to a current and voltage signal source output terminal is connected to the negative terminal of the operational amplifier of the input signal of each transformer input above through a resistor.

[0032] Measuring circuits such as Figure 5 Shown:

[0033] The measurement circuit collects 6 signals in total, A-phase current IA, B-phase current IB, C-phase current IC, A-phase voltage Ua, B-phase voltage Ub, C-phase voltage Uc, and two reference signals neutral current I0 (current The return channel of the sam...

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Abstract

A distributed synthetic power energy quality regulation device is composed of a test circuit containing test elements, a control circuit with computing function including reactive power compensation, an operation circuit made up of each phase or each line inverse parallel transistors and a master circuit of subdivided capacitors among which, the test circuit is coupled with a network via three current mutual-inductors and three voltage mutual inductors, the control circuit is composed of a 16 bit single-chip processor of Intel and chips around, which output signal controls on-off of the operation circuit.

Description

technical field [0001] The distributed comprehensive power quality regulating device belongs to the technical field of grid voltage and current quality regulation. technical background [0002] The current reactive power compensation device and comprehensive power quality meter have the following types: [0003] (1), dynamic reactive power phase-splitting compensation method and device (<announcement number> 1404197) [0004] The invention discloses a dynamic reactive power phase separation compensation method and device. The method and device use anti-parallel thyristors and diodes as switches for compensating capacitors, are controlled by industrial PCs, and perform phase-splitting switching of multistage capacitor banks by tracking and detecting reactive current or reactive power of loads. [0005] The above-mentioned invention uses a PC for control and does not have the function of power quality monitoring; while the present invention uses a single-chip microcomp...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 卢强梅生伟陈菊明桂小阳刘锋
Owner TSINGHUA UNIV
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