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Integrated efficient diesel generator set

A diesel generator set, high-efficiency technology, applied in flexible AC transmission system, reactive power adjustment/elimination/compensation, etc., can solve the problems of low failure rate, cost increase, etc., to improve efficiency and accuracy, and reduce calculation errors Effect

Inactive Publication Date: 2018-11-27
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, diesel generator sets are widely used in many new projects. Diesel generators work reliably, have a low failure rate, and have the lowest comprehensive cost of construction and power generation. However, the uncontrollable power factor of diesel generator sets on the market affects The problem of active power output is also very common. Using various high-end digital control chips for power factor calculation and compensation control will increase the cost accordingly

Method used

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specific Embodiment approach 1

[0018] Specific embodiments one, the following will be combined with the attached Figure 1-6 , the present invention is described in detail:

[0019] Including keyboard input module 1, power factor angle calculation circuit 2, control signal processing circuit 3, actuator 4, static var generator 5, generator set 6, voltage and current detection module 7, zero-crossing detection circuit 8 and phase difference calculation circuit 9. The keyboard input module 1 is connected to the power factor angle calculation circuit 2, the output end of the power factor angle calculation circuit 2 is connected to one end of the control signal processing circuit 3, and the other end of the control signal processing circuit 3 is connected to one end of the actuator 4 , the other end of the actuator 4 is connected to the input end of the static var generator 5, the other end of the static var generator 5 is connected to the input end of the generator set 6, and the output end of the generator se...

specific Embodiment approach 2

[0020] Specific implementation mode two, the following will be combined with the attached Figure 1-6 , the present invention is described in detail:

[0021] The phase difference calculation circuit includes an RS flip-flop and a JK flip-flop, the voltage zero-crossing pulse is connected to the S terminal of the RS flip-flop and the input terminal of the JK flip-flop respectively, the output terminal of the RS flip-flop is connected to the K terminal of the JK flip-flop, and the current The zero-crossing pulse is connected to the R terminal of the RS flip-flop and the J terminal of the JK flip-flop respectively. When the current zero-crossing pulse outputs a high level through the Q terminal of the JK flip-flop, it is in an inductive state, and when it is low, it is a capacitive state, and the voltage crosses zero. The pulse outputs the phase difference pulse through the Q terminal of the RS flip-flop, and the VCC terminal is connected to the CLK signal terminal of the RS fli...

specific Embodiment approach 3

[0022] Specific implementation mode three, the following will be combined with the attached Figure 1-6 , the present invention is described in detail:

[0023] The voltage and current detection module 7 includes a voltage zero-crossing detection circuit and a current zero-crossing detection circuit. The input end of the voltage zero-crossing detection circuit is connected to one end of the resistor R8, and the other end of the resistor R8 is connected to one end of the resistor R1 and the resistor R9 respectively. The other end of R9 is connected to the ground pin GND1, the other end of the resistor R1 is connected to the positive pole of the integrated circuit LM393, the integrated circuit LM393 is respectively connected to the VCC1 end and the VEE end, the integrated circuit LM393 is connected to the input end of the resistor R3, and the input end of the resistor R3 The other end of the resistor R3 is connected to the collector of the transistor Q1, the emitter of the trans...

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Abstract

The invention discloses an integrated efficient diesel generator set, and belongs to the technical field of electrical engineering, aiming to solve the technical problem that the active power output with the inductive load is affected by uncontrollability of the diesel generator set. The integrated efficient diesel generator set comprises a keyboard input module, a power factor angle calculation circuit, a control signal processing circuit, an actuator, a static var generator, a generator set, a voltage and current detecting module, a zero-crossing detection circuit and a phase difference calculation circuit; the other end of the control signal processing circuit is connected with one end of the actuator, and the other end of the actuator is connected with the input end of the static var generator; the other end of the static var generator is connected with the input end of the generator set, and the output end of the generator set is connected with one end of the voltage and current detecting module; the other end of the voltage and current detecting module is connected with one end of the zero-crossing detection circuit, and the other end of the zero-crossing detection circuit isconnected with the input end of the phase difference calculation circuit. By the integrated efficient diesel generator set, the active power of the generator set under inductive load is outputted.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a comprehensive and efficient diesel generator set. Background technique [0002] At present, diesel generator sets are widely used in many new projects. Diesel generators work reliably, have a low failure rate, and have the lowest comprehensive cost of construction and power generation. However, the uncontrollable power factor of diesel generator sets on the market affects The problem of active power output is also very common. Using various high-end digital control chips for power factor calculation and compensation control will increase the cost accordingly. Contents of the invention [0003] The present invention overcomes the shortcomings of the above-mentioned prior art and provides a comprehensive and efficient diesel generator set. [0004] A comprehensive and efficient diesel generator set, including a keyboard input module, a power factor angle calcula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCH02J3/18Y02E40/10
Inventor 康尔良许晓波马坤黄善武邵文强朱永强陈泓刘畅陈浩元
Owner HARBIN UNIV OF SCI & TECH