Diesel generator parallel control apparatus

A technology of diesel generator and control device, which is applied in the direction of single-grid parallel feeding arrangement, etc., to avoid waste, increase capacity or reduce capacity conveniently.

Active Publication Date: 2015-11-18
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The invention solves the defects and problems caused by the existing diesel generator controller adopting one controller to c

Method used

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  • Diesel generator parallel control apparatus
  • Diesel generator parallel control apparatus
  • Diesel generator parallel control apparatus

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Embodiment Construction

[0033] The parallel control device for diesel generators includes multiple controllers, each controller independently controls a diesel generator; it also includes an execution module pb containing a grid bus circuit breaker, and the contacts of the grid bus circuit breaker in it are connected to Between the grid busbar and the load; the controller includes a processor, and the input of the processor is connected to a grid measurement module for collecting grid busbar voltage (VA, VB, VC), current (IA, IB, IC), and frequency. To collect the voltage of the controlled diesel generator (D k A.D k B.D k C), current (I k A. I k B. I k C), frequency, oil temperature t k , oil pressure p k , speed n k The measurement module is a first phase detection module used to collect the phase difference between the grid bus and the controlled diesel generator, and a second phase detection module used to collect the phase difference between the controlled diesel generator and the synchro...

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Abstract

The invention relates to a diesel generator control apparatus and specifically relates to a diesel generator parallel control apparatus, for solving the defects and problems generated when a conventional diesel generator controller employs a distributed control mode to acquire and control multiple diesel generators by use of one controller. According to the diesel generator parallel control apparatus, each controller individually controls one diesel generator, and each controller employs a control mode of a bus structure. One onsite bus communication module and one phase detection module are additionally arranged on the basis of conventional controller hardware. In terms of software, a set starts by use of a fault rearrangement method, distributes power equally according to a power distribution algorithm during power distribution and employs both a set load shutdown mode and a power restoration shutdown mode during a shutdown, when a circuit breaker between the diesel generators and a diesel generator bus is open or closed, it should be confirmed that the controllers are at normal working states, and a circuit breaker between a power network and a load employs an independent execution module. Great convenience is provided for capacity increase or capacity reduction of a system.

Description

technical field [0001] The invention relates to a diesel generator control device, in particular to a diesel generator parallel control device. Background technique [0002] With the steady improvement of the national economy, more and more departments have put forward higher requirements for the continuity of power supply. Existing diesel generator controllers can generally meet the requirements of single-machine or double-machine control, and more than two-machine systems need to design a dedicated controller, and the control system mostly adopts a distributed control method (one controller controls multiple diesel generators). Use the state diagram as figure 1 As shown (take the three machines as an example), its internal structure diagram is as follows figure 2 shown. The existing controller includes a processor, and the input of the processor is connected to a grid measurement module for collecting grid bus voltage (VA, VB, VC), current (IA, IB, IC) and frequency, a...

Claims

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Application Information

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IPC IPC(8): H02J3/38
Inventor 李岚杨勇刘民杨建廷
Owner TAIYUAN UNIV OF TECH
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