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Electric power apparatus integrated automated detection system

A technology that integrates automation and power equipment. It is used in information technology support systems, measuring electricity, and measuring devices. It can solve problems such as high maintenance costs and production costs, inconvenient on-site operations, and single testing functions, and achieve improved accuracy and convenience. On-site operation, small volume effect

Inactive Publication Date: 2008-08-13
扬州奥瑞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the on-site operation is very inconvenient, and the maintenance cost and production cost are very high
[0007] Because it is an independent test, it is impossible to test comprehensive automation devices for power systems. Many power system protection testers or remote monitoring testers cannot perform closed-loop testing, and the test function is single.

Method used

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  • Electric power apparatus integrated automated detection system
  • Electric power apparatus integrated automated detection system
  • Electric power apparatus integrated automated detection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Telecontrol monitoring test

[0054] Such as Figure 4 , in the monitoring test of prior art, DSP or single-chip microcomputer needs to output analog quantity, also will collect analog quantity to calculate simultaneously, and workload is very big, therefore has to carry out a lot of processing, has brought problems.

[0055] a) The sampling circuit (A / D) part of many monitoring and testing instruments uses a V / F chip, that is, voltage-frequency analog-to-digital conversion, which can greatly reduce the amount of calculation, but the accuracy cannot be guaranteed, and the error is large. And it's hard to calculate harmonics.

[0056] b) Reduce the number of output points and sampling points per unit time, and reduce the amount of calculation. In this way, the output waveform is unstable and the precision is not high. Reducing the number of sampling points will also reduce the sampling accuracy.

[0057] c) The accuracy assurance of the output of the general monitori...

Embodiment 2

[0074] Relay protection function test software features:

[0075] Such as image 3 , the conventional protection tester of the prior art generally also adopts the design scheme of PC + DSP, which has several disadvantages,

[0076] a) First, all calculation programs are placed in the ROM of the DSP board, and the whole system is fixed and inflexible;

[0077] b) Secondly, the data exchange between the PC (notebook computer) and the DSP board is carried out through the serial port or the parallel port, the data exchange rate is slow, and the real-time performance is poor;

[0078] c) Finally, all calculations are performed on the DSP, and the calculation pressure is high, and the output accuracy and the number of output points per unit time are small (generally 300 points within 20ms).

[0079] d) The closed-loop test of the system cannot be performed.

[0080] The invention can complete conventional relay protection function tests, including general tests (output three-phas...

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Abstract

The present invention provides an integration automatization examining system of electric power equipment which relates to fields of integration automatization examining of electric power system, which comprises of host computer PC, lower computer DSP, power amplifier. A PCI bridge with dual-port RAM is connected between host computer PC and lower computer DSP, a sampling circuit connected with analog-to-digital converter in series is placed between power amplifier and lower computer DSP. Parameters and orders are input to host computer PC, selected program downloaded by PC is transferred to DSP, data current is passed through memorizer of DSP, and examining task is carried by DSP. The present invention changes former mode of customization examining device and realizes a multi-use machine, makes the upgrade operation of program convenient, can transfer large current data, and has high precision. The present invention can finish all kinds of protection functional testing of remote control, remote examining, remote signaling of on-line examining and inspection, can communicate with device to be measured, and display testing result on testing report automatically. The report employs Word document, so it's convenient operation by users.

Description

technical field [0001] The invention relates to the field of comprehensive automatic testing of electric power systems, in particular to a system satisfying closed-circuit testing of comprehensive automatic devices of electric power systems. Background technique [0002] With the advancement of comprehensive automation technology for power equipment, a large number of secondary equipment are installed in power dispatching stations and substations to ensure the normal operation of the power system. These devices need to undertake the monitoring and adjustment of the operating status of the power line. For example, when a short circuit occurs on a power line, the relay protection device can quickly cut off the faulty line according to changes in parameters such as line current and voltage. It is necessary for these equipment, which bear heavy responsibilities, to maintain good performance at any time during long-term operation. However, the performance of these devices and w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00H02J13/00G06F13/00
CPCY02B90/20Y04S40/128
Inventor 耿骥张振军孙军许奇蒋志雷唐超
Owner 扬州奥瑞科技有限公司
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