CN105445674A - AC/DC power supply fault analyzing device and detection method thereof - Google Patents
AC/DC power supply fault analyzing device and detection method thereof Download PDFInfo
- Publication number
- CN105445674A CN105445674A CN201510937844.3A CN201510937844A CN105445674A CN 105445674 A CN105445674 A CN 105445674A CN 201510937844 A CN201510937844 A CN 201510937844A CN 105445674 A CN105445674 A CN 105445674A
- Authority
- CN
- China
- Prior art keywords
- electrical signal
- power supply
- circuit
- normal
- analog
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 7
- 230000009466 transformation Effects 0.000 claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 6
- 230000011664 signaling Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract 1
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
交直流电源故障分析仪及其检测方法。分析仪设有MCU、电源模块、128倍频电路、模数转换器、时钟电路、按键、外部数据存储器、LCD显示器、声光报警器、状态指示灯、低通选频滤波器、电压互感器、运放电路。检测方法：1)与标准电压参考值比较，判断电信号是否正常；若异常则报警；若正常则进入2)；2)产生同步于电信号的128倍频脉冲信号,控制转换器对电信号等间隔采样；3)对数据采集结果预处理,调用FFT变换子程序对数据进行FFT变换，共循环8次；4)通过数字滤波去除FFT变换后的极值，再取平均值,计算出各次谐波含量与畸变系数；5)与标准参考值对比，判断电信号是否正常，若畸变系数过大，则报警并显示。
An AC/DC power supply failure analyzer and its detection method. The analyzer is equipped with MCU, power module, 128 frequency doubling circuit, analog-to-digital converter, clock circuit, keys, external data memory, LCD display, sound and light alarm, status indicator light, low-pass frequency selective filter, voltage transformer , Op amp circuit. Detection method: 1) Compare with the standard voltage reference value to judge whether the electrical signal is normal; if it is abnormal, it will alarm; if it is normal, enter 2); 2) Generate a 128-fold frequency pulse signal synchronized with the electrical signal, and control the converter to monitor the electrical signal Sampling at equal intervals; 3) Preprocessing the data acquisition results, calling the FFT transformation subroutine to perform FFT transformation on the data, a total of 8 cycles; 4) Remove the extreme value after FFT transformation through digital filtering, and then take the average value to calculate each Sub-harmonic content and distortion coefficient; 5) Compare with the standard reference value to judge whether the electrical signal is normal. If the distortion coefficient is too large, it will alarm and display.
Description
技术领域technical field
本发明涉及故障分析仪器，尤其是涉及一种交直流电源故障分析仪及其检测方法。The invention relates to a fault analysis instrument, in particular to an AC/DC power supply fault analyzer and a detection method thereof.
背景技术Background technique
仪器仪表、通信设备、监控设备的供电系统一般是由市电、交流稳压电源、在线式UPS电源、直流开关电源等环节组成。如果有供电系统不稳定、波动大，电源的谐波含量过高，纹波系数过大，过压、欠压等异常情况出现时，将会影响系统的稳定性和可靠性。The power supply system of instrumentation, communication equipment and monitoring equipment is generally composed of mains power, AC regulated power supply, online UPS power supply, DC switching power supply and other links. If the power supply system is unstable and fluctuates greatly, the harmonic content of the power supply is too high, the ripple coefficient is too large, and abnormal conditions such as overvoltage and undervoltage occur, it will affect the stability and reliability of the system.
随着工业发展和居民用电设备的增多，谐波危害日益严重，主要表现为谐波使设备产生附加损耗，降低用电设备的效率；同时谐波还可能引起过电压或过电流使电容器、电缆过热，绝缘老化，寿命缩短，易发生火灾。电源产生谐波的主要原因，一是开关电源中普遍采用电容滤波型桥式整流电路，造成输入电流波形畸变；二是电源电路中的开关器件(二极管、三极管)及感性负载工作于高频开关状态而产生尖峰脉冲。With the development of industry and the increase of residential electrical equipment, the harm of harmonics is becoming more and more serious. The main manifestation is that harmonics cause additional loss of equipment and reduce the efficiency of electrical equipment; at the same time, harmonics may also cause overvoltage or overcurrent to make capacitors, The cable is overheated, the insulation is aging, the life is shortened, and it is prone to fire. The main reason for the harmonics in the power supply is that the capacitive filter bridge rectifier circuit is generally used in the switching power supply, which causes the input current waveform to be distorted; state to generate spikes.
发明内容Contents of the invention
本发明的目的在于针对现有技术中存在的上述问题，提供一种可解决判断电源故障是否异常的一种交直流电源故障分析仪。The purpose of the present invention is to provide an AC/DC power failure analyzer capable of judging whether the power failure is abnormal, aiming at the above-mentioned problems existing in the prior art.
本发明的另一目的在于提供一种交直流电源故障的检测方法。Another object of the present invention is to provide a method for detecting AC and DC power failures.
所述交直流电源故障分析仪设有MCU、电源模块、128倍频电路、模数转换器、时钟电路、按键、外部数据存储器、LCD显示器、声光报警器、状态指示灯、低通选频滤波器、电压互感器、运放电路；The AC/DC power failure analyzer is equipped with MCU, power module, 128 frequency multiplication circuit, analog-to-digital converter, clock circuit, buttons, external data memory, LCD display, sound and light alarm, status indicator light, low-pass frequency selection Filters, voltage transformers, operational amplifier circuits;
所述MCU与电源模块、模数转换器、时钟电路、按键、外部数据存储器连接；运放电路与低通选频滤波器连接；模数转换器与128倍频电路、低通选频滤波器连接；电压互感器与运放电路连接；所述MCU与LCD显示器、声光报警器、状态指示灯连接；所述电压互感器外接交流电源；所述运放电路外接直流电源。The MCU is connected with the power module, analog-to-digital converter, clock circuit, buttons, and external data memory; the operational amplifier circuit is connected with the low-pass frequency-selective filter; the analog-to-digital converter is connected with the 128-frequency multiplication circuit and the low-pass frequency-selective filter connection; the voltage transformer is connected to the op-amp circuit; the MCU is connected to the LCD display, sound and light alarm, and status indicator; the voltage transformer is connected to an AC power supply; the op-amp circuit is connected to a DC power supply.
本发明可分别对交流电源或直流电源的运行状况进行实时测量分析，当发现故障情况时,电源故障分析仪会通过声光方式报警,并显示故障的类别。The present invention can respectively measure and analyze the operating conditions of the AC power supply or the DC power supply in real time, and when a fault is found, the power failure analyzer will give an alarm through sound and light, and display the category of the fault.
所述交直流电源故障的检测方法，包括以下步骤：The detection method of the AC-DC power supply failure comprises the following steps:
步骤1，与标准电压参考值比较，判断电信号的电压值是否正常；若异常，则直接发出故障报警信号，显示过压或欠压的状态指示灯；若正常，则进入步骤2；Step 1. Compare with the standard voltage reference value to judge whether the voltage value of the electrical signal is normal; if it is abnormal, it will directly send out a fault alarm signal and display an overvoltage or undervoltage status indicator light; if it is normal, go to step 2;
步骤2，产生同步于电信号的128倍频脉冲信号,控制模数转换器对电信号进行等间隔采样128次；Step 2, generating a 128-fold frequency pulse signal synchronized with the electrical signal, and controlling the analog-to-digital converter to sample the electrical signal 128 times at equal intervals;
步骤3，对数据采集结果进行预处理,然后调用FFT变换子程序对数据进行FFT变换，上述过程共循环进行8次；Step 3, preprocessing the data acquisition results, and then calling the FFT transformation subroutine to perform FFT transformation on the data, and the above-mentioned process is cycled 8 times in total;
步骤4，通过数字滤波，去除步骤3FFT变换后的极大值和极小值，再取平均值,然后计算出各次谐波的含量与畸变系数；Step 4, through digital filtering, remove the maximum value and minimum value after the FFT transformation in step 3, and then take the average value, and then calculate the content and distortion coefficient of each harmonic;
步骤5，与正常工况下的标准参考值对比，判断电信号是否正常，若电信号畸变系数过大，超过设定值，则发出相对应的电源故障声光报警信号，并显示电源故障状态指示灯。Step 5. Compare with the standard reference value under normal working conditions to judge whether the electrical signal is normal. If the distortion coefficient of the electrical signal is too large and exceeds the set value, a corresponding power failure sound and light alarm signal will be issued and the power failure status will be displayed. light.
本发明的突出技术效果如下：Outstanding technical effect of the present invention is as follows:
1、电源故障分析仪对直流电源或交流电源均可适用。1. The power failure analyzer is applicable to both DC power supply and AC power supply.
2、可检测出市电、稳压电源、UPS电源、开关电源等电压信号中各次谐波的含量及信号畸变系数。2. It can detect the content of each harmonic and the signal distortion coefficient in voltage signals such as mains power, regulated power supply, UPS power supply, and switching power supply.
3、对异常情况，可显示故障的类别并发出声光报警。3. For abnormal situations, it can display the category of the fault and issue an audible and visual alarm.
附图说明Description of drawings
图1为本发明所述交直流电源故障分析仪实施例的结构组成框图。Fig. 1 is a block diagram of the structural composition of the embodiment of the AC and DC power supply fault analyzer of the present invention.
图2为本发明交直流电源故障的检测方法流程框图。Fig. 2 is a flow chart of the method for detecting AC and DC power failures in the present invention.
具体实施方式detailed description
以下实施例将结合附图对本发明作详细说明：The following embodiments will describe the present invention in detail in conjunction with the accompanying drawings:
如图1所示，本发明所述交直流电源故障分析仪实施例设有MCU1、电源模块2、128倍频电路3、模数转换器4、时钟电路5、按键6、外部数据存储器7、LCD显示器8、声光报警器9、状态指示灯10、低通选频滤波器11、电压互感器12、运放电路13；As shown in Figure 1, the AC/DC power failure analyzer embodiment of the present invention is provided with MCU1, power supply module 2, 128 frequency multiplication circuit 3, analog-to-digital converter 4, clock circuit 5, button 6, external data memory 7, LCD display 8, sound and light alarm 9, status indicator light 10, low-pass frequency selective filter 11, voltage transformer 12, operational amplifier circuit 13;
所述MCU1与电源模块2、模数转换器4、时钟电路5、按键6、外部数据存储器7连接；运放电路13与低通选频滤波器11连接；模数转换器4与128倍频电路3、低通选频滤波器11连接；电压互感器12与运放电路13连接；所述MCU1与LCD显示器8、声光报警器9、状态指示灯10连接；所述电压互感器12外接交流电源14；所述运放电路13外接直流电源15。The MCU1 is connected with the power module 2, the analog-to-digital converter 4, the clock circuit 5, the button 6, and the external data memory 7; the operational amplifier circuit 13 is connected with the low-pass frequency-selective filter 11; the analog-to-digital converter 4 is multiplied by 128 Circuit 3, low-pass frequency selective filter 11 are connected; Voltage transformer 12 is connected with operational amplifier circuit 13; Described MCU1 is connected with LCD display 8, sound and light alarm 9, status indicator light 10; Described voltage transformer 12 is externally connected AC power supply 14; the operational amplifier circuit 13 is externally connected to a DC power supply 15.
本发明可对交直流电源的运行状况进行实时测量分析，当发现故障情况时,电源故障分析仪会通过声光方式报警，并显示故障的类别。如图2所示，交直流电源故障的检测方法包括下述步骤：The invention can perform real-time measurement and analysis on the operation status of the AC and DC power supply, and when a fault is found, the power fault analyzer will give an alarm through sound and light, and display the type of the fault. As shown in Figure 2, the detection method of the AC and DC power supply failure includes the following steps:
步骤1，与标准电压参考值比较，判断电信号的电压值是否正常；若异常，则直接发出故障报警信号，显示过压或欠压的状态指示灯；若正常，则进入步骤2；Step 1. Compare with the standard voltage reference value to judge whether the voltage value of the electrical signal is normal; if it is abnormal, it will directly send out a fault alarm signal and display an overvoltage or undervoltage status indicator light; if it is normal, go to step 2;
步骤2，产生同步于电信号的128倍频脉冲信号,控制模数转换器对电信号进行等间隔采样128次；Step 2, generating a 128-fold frequency pulse signal synchronized with the electrical signal, and controlling the analog-to-digital converter to sample the electrical signal 128 times at equal intervals;
步骤3，对数据采集结果进行预处理,然后调用FFT变换子程序对数据进行FFT变换，上述过程共循环进行8次；Step 3, preprocessing the data acquisition results, and then calling the FFT transformation subroutine to perform FFT transformation on the data, and the above-mentioned process is cycled 8 times in total;
步骤4，通过数字滤波，去除步骤3FFT变换后的极大值和极小值，再取平均值,然后计算出各次谐波的含量与畸变系数；Step 4, through digital filtering, remove the maximum value and minimum value after the FFT transformation in step 3, and then take the average value, and then calculate the content and distortion coefficient of each harmonic;
步骤5，与正常工况下的标准参考值对比，判断电信号是否正常，若电信号畸变系数过大，超过设定值，则发出相对应的电源故障声光报警信号，并显示电源故障状态指示灯。Step 5. Compare with the standard reference value under normal working conditions to judge whether the electrical signal is normal. If the distortion coefficient of the electrical signal is too large and exceeds the set value, a corresponding power failure sound and light alarm signal will be issued and the power failure status will be displayed. light.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510937844.3A CN105445674A (en) | 2015-12-16 | 2015-12-16 | AC/DC power supply fault analyzing device and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510937844.3A CN105445674A (en) | 2015-12-16 | 2015-12-16 | AC/DC power supply fault analyzing device and detection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105445674A true CN105445674A (en) | 2016-03-30 |
Family
ID=55556098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510937844.3A Pending CN105445674A (en) | 2015-12-16 | 2015-12-16 | AC/DC power supply fault analyzing device and detection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105445674A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787966A (en) * | 2017-01-11 | 2017-05-31 | 广东亦能地坪设备有限公司 | Machine for laying floor apparatus for monitoring power supply |
| CN108255658A (en) * | 2016-12-28 | 2018-07-06 | 天津正初科技有限公司 | A kind of light current intelligent monitoring early warning system for computer |
| CN108459279A (en) * | 2017-12-04 | 2018-08-28 | 山东超越数控电子股份有限公司 | A kind of power supply debugging apparatus and method based on FPGA |
| CN113879542A (en) * | 2021-10-26 | 2022-01-04 | 成都富凯飞机工程服务有限公司 | A UI Indication System for Airborne Oxygen Concentrator |
| CN119270020A (en) * | 2024-12-11 | 2025-01-07 | 青岛中微创芯电子有限公司 | A RC-IGBT fault detection and diagnosis method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201535935U (en) * | 2009-10-10 | 2010-07-28 | 佛山市柏克电力设备有限公司 | UPS voice alarm circuit |
| CN202189134U (en) * | 2011-07-08 | 2012-04-11 | 黄冬来 | Power failure monitoring device |
| CN205193247U (en) * | 2015-12-16 | 2016-04-27 | 厦门大学 | AC/DC power supply failure analysis appearance |
-
2015
- 2015-12-16 CN CN201510937844.3A patent/CN105445674A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201535935U (en) * | 2009-10-10 | 2010-07-28 | 佛山市柏克电力设备有限公司 | UPS voice alarm circuit |
| CN202189134U (en) * | 2011-07-08 | 2012-04-11 | 黄冬来 | Power failure monitoring device |
| CN205193247U (en) * | 2015-12-16 | 2016-04-27 | 厦门大学 | AC/DC power supply failure analysis appearance |
Non-Patent Citations (2)
| Title |
|---|
| 尤晓刚: "监控系统各种交直流电源故障分析", 《知识经济》 * |
| 李永清: "监控系统综合故障分析仪的研制", 《中国优秀博硕士学位论文全文数据库（硕士） 信息科技辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108255658A (en) * | 2016-12-28 | 2018-07-06 | 天津正初科技有限公司 | A kind of light current intelligent monitoring early warning system for computer |
| CN106787966A (en) * | 2017-01-11 | 2017-05-31 | 广东亦能地坪设备有限公司 | Machine for laying floor apparatus for monitoring power supply |
| CN108459279A (en) * | 2017-12-04 | 2018-08-28 | 山东超越数控电子股份有限公司 | A kind of power supply debugging apparatus and method based on FPGA |
| CN113879542A (en) * | 2021-10-26 | 2022-01-04 | 成都富凯飞机工程服务有限公司 | A UI Indication System for Airborne Oxygen Concentrator |
| CN113879542B (en) * | 2021-10-26 | 2025-07-04 | 成都富凯飞机工程服务有限公司 | A UI indication system for airborne oxygen concentrator |
| CN119270020A (en) * | 2024-12-11 | 2025-01-07 | 青岛中微创芯电子有限公司 | A RC-IGBT fault detection and diagnosis method |
| CN119270020B (en) * | 2024-12-11 | 2025-07-15 | 青岛中微创芯电子有限公司 | A RC-IGBT fault detection and diagnosis method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109991498B (en) | Arc detection | |
| CN106291430A (en) | Insulation Inspection Device for Direct-Current System pilot system and test method | |
| CN105445674A (en) | AC/DC power supply fault analyzing device and detection method thereof | |
| CN104597426A (en) | Remote online monitoring method of energy measurement device | |
| CN102798782B (en) | High-voltage insulation resistance monitoring alarm | |
| CN203909135U (en) | A device for monitoring an alternating current ingress component in a transformer substation direct current system | |
| KR101617117B1 (en) | Performance test system for protective relay apparatus | |
| CN103427485A (en) | Device used for detecting direct current power supply connected to alternating current power supply and direct current power supply ripples and used in transformer substation | |
| CN201413371Y (en) | On-line monitoring and fault diagnosis system for substation equipment | |
| CN204287307U (en) | Transformer, current detection circuit based on transformer | |
| CN106199343A (en) | A kind of power system DC power supply monitor and monitoring method | |
| KR100813663B1 (en) | Network-based electrical quality measuring device with abnormal state alarm | |
| CN110687471A (en) | A DC power aging monitoring system | |
| CN112290675A (en) | High-low voltage switch cabinet operation and maintenance terminal information acquisition system with high stability performance | |
| CN104266679A (en) | Method and device for monitoring and diagnosing power transformer | |
| CN106771927B (en) | GIS voltage withstand fault positioning method, fault cause judging method using same and positioning device | |
| CN204064351U (en) | A kind of monitoring diagnosis device of power transformer | |
| CN112986708A (en) | Method and device for judging whether bus capacitor needs to be overhauled or replaced | |
| CN205193247U (en) | AC/DC power supply failure analysis appearance | |
| CN115469241A (en) | Fault detection method and device for charging module of direct-current power supply system | |
| CN112383030B (en) | A novel switchgear arc protection method and device | |
| CN205404719U (en) | Mutual -inductor common return multipoint earthing detector | |
| CN206945928U (en) | Fault detect positioner is scurried into a kind of Portable exchange | |
| CN106825860B (en) | Inverter type welder fault detection means | |
| CN113834965A (en) | Ripple voltage measuring device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |