CN203849324U - Overvoltage warning indicator - Google Patents
Overvoltage warning indicator Download PDFInfo
- Publication number
- CN203849324U CN203849324U CN201420255310.3U CN201420255310U CN203849324U CN 203849324 U CN203849324 U CN 203849324U CN 201420255310 U CN201420255310 U CN 201420255310U CN 203849324 U CN203849324 U CN 203849324U
- Authority
- CN
- China
- Prior art keywords
- voltage
- dual
- circuit
- model
- microprocessor
- 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.)
- Expired - Lifetime
Links
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
本实用新型涉及一种过电压警示器，其结构为，电压互感器的输出端连接双电压比较器的输入端，双电压比较器的输出端连接微处理器和定时器，微处理器连接电源和报警电路，报警电路连接有指示灯；所述的双电压比较器设有双运算放大器，双运算放大器连接有负温度系数稳压二极管、单一比较基准电源电路和电阻。本实用新型能在过电压发生时，及时进行报警，以保证线路的安全，安装使用方便，可靠性高，实用性强，适于推广应用。
The utility model relates to an overvoltage warning device, the structure of which is that the output end of the voltage transformer is connected with the input end of a dual voltage comparator, the output end of the dual voltage comparator is connected with a microprocessor and a timer, and the microprocessor is connected with a power supply and an alarm circuit, the alarm circuit is connected with an indicator light; the dual voltage comparator is provided with a dual operational amplifier, and the dual operational amplifier is connected with a negative temperature coefficient constant voltage diode, a single comparison reference power supply circuit and a resistor. The utility model can give an alarm in time when an overvoltage occurs, so as to ensure the safety of the circuit, has the advantages of convenient installation and use, high reliability and strong practicability, and is suitable for popularization and application.
Description
技术领域 technical field
本实用新型涉及一种电力警示装置，尤其涉及一种过电压警示器，使用于电力在线监测报警。 The utility model relates to an electric power warning device, in particular to an overvoltage warning device, which is used for electric power online monitoring and alarming.
背景技术 Background technique
电流互感器在运行中如果二次绕组开路或一次绕组流过异常电流，都会在二次侧产生数千伏甚至上万伏的过电压。这不仅会使CT和二次设备损坏，也严重威胁运行人员的生命安全，并造成重大经济损失。 During the operation of the current transformer, if the secondary winding is open or the primary winding flows abnormal current, an overvoltage of thousands of volts or even tens of thousands of volts will be generated on the secondary side. This will not only damage CT and secondary equipment, but also seriously threaten the life safety of operating personnel and cause major economic losses.
实用新型内容 Utility model content
本实用新型针对上述现有技术中存在的问题，提供了一种过电压警示器，解决了现有技术中存在安全隐患的问题。 The utility model provides an overvoltage warning device aiming at the problems existing in the above-mentioned prior art, which solves the problem of potential safety hazards in the prior art.
本实用新型的技术方案如下： The technical scheme of the utility model is as follows:
电压互感器的输出端连接双电压比较器的输入端，双电压比较器的输出端连接微处理器和定时器，微处理器连接电源和报警电路，报警电路连接有指示灯；所述的双电压比较器设有双运算放大器，双运算放大器连接有负温度系数稳压二极管、单一比较基准电源电路和电阻。 The output end of the voltage transformer is connected to the input end of the dual voltage comparator, the output end of the dual voltage comparator is connected to the microprocessor and the timer, the microprocessor is connected to the power supply and the alarm circuit, and the alarm circuit is connected to an indicator light; The voltage comparator is provided with dual operational amplifiers, and the dual operational amplifiers are connected with a negative temperature coefficient constant voltage diode, a single comparison reference power supply circuit and a resistor.
所述的单一比较基准电源电路由电阻和电极管相连构成。 The single comparison reference power supply circuit is formed by connecting a resistor with an electrode tube.
所述的报警电路包括语音芯片和功放。 The alarm circuit includes a voice chip and a power amplifier.
本实用新型的优点效果如下： The advantages and effects of the utility model are as follows:
能在过电压发生时，及时进行报警，以保证线路的安全，安装使用方便，可靠性高，实用性强，适于推广应用。 When the overvoltage occurs, an alarm can be issued in time to ensure the safety of the line, the installation and use are convenient, the reliability is high, the practicability is strong, and it is suitable for popularization and application.
附图说明 Description of drawings
图1为本实用新型的结构示意框图。 Fig. 1 is a structural schematic block diagram of the utility model.
具体实施方式 Detailed ways
以下参照附图，结合具体实施例，详细描述本实用新型的具体结构。 The specific structure of the utility model will be described in detail below in conjunction with specific embodiments with reference to the accompanying drawings.
实施例 Example
如图1所示，电压互感器的输出端连接双电压比较器的输入端，双电压比较器的输出端连接微处理器和定时器，微处理器连接电源和报警电路，报警电路连接有指示灯；所述的双电压比较器设有双运算放大器，双运算放大器连接有负温度系数稳压二极管、单一比较基准电源电路和电阻；所述的单一比较基准电源电路由电阻和电极管相连构成。 As shown in Figure 1, the output terminal of the voltage transformer is connected to the input terminal of the dual voltage comparator, the output terminal of the dual voltage comparator is connected to the microprocessor and the timer, the microprocessor is connected to the power supply and the alarm circuit, and the alarm circuit is connected to an indicator Light; the dual-voltage comparator is provided with dual operational amplifiers, and the dual operational amplifiers are connected with a negative temperature coefficient zener diode, a single comparison reference power supply circuit and a resistor; the single comparison reference power supply circuit is formed by connecting a resistor and an electrode tube .
所述的报警电路包括语音芯片和功放，语音芯片型号为ap89021，功放型号为TDA2003。 The alarm circuit includes a voice chip and a power amplifier, the voice chip model is ap89021, and the power amplifier model is TDA2003.
所述的双运算放大器型号为LM358，所述的负温度系数稳压二极管型号为1N4148。 The model of the dual operational amplifier is LM358, and the model of the negative temperature coefficient Zener diode is 1N4148.
所述的微处理器为ARM处理器。 The microprocessor is an ARM processor.
本实用新型安装于电流互感器二次侧，电压互感器检测CT二次侧电压，双电压比较器对电压值进行比较，当电压超出临界值时微处理器控制报警电路发出报警，并控制指示灯发光，各部分均由电源供电。 The utility model is installed on the secondary side of the current transformer. The voltage transformer detects the voltage on the secondary side of the CT. The dual voltage comparator compares the voltage value. When the voltage exceeds the critical value, the microprocessor controls the alarm circuit to issue an alarm and control the indication. The lights glow and all parts are powered by the mains.
以上所述是本实用新型的具体实施例及所运用的技术原理，任何基于本实用新型技术方案基础上的等效变换，均属于本实用新型的保护范围之内。 The above are specific embodiments of the utility model and the applied technical principles. Any equivalent transformation based on the technical solution of the utility model falls within the scope of protection of the utility model.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255310.3U CN203849324U (en) | 2014-05-19 | 2014-05-19 | Overvoltage warning indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255310.3U CN203849324U (en) | 2014-05-19 | 2014-05-19 | Overvoltage warning indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203849324U true CN203849324U (en) | 2014-09-24 |
Family
ID=51562325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255310.3U Expired - Lifetime CN203849324U (en) | 2014-05-19 | 2014-05-19 | Overvoltage warning indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203849324U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034955A (en) * | 2014-05-19 | 2014-09-10 | 国家电网公司 | Overvoltage warning device |
| CN105353321A (en) * | 2015-12-10 | 2016-02-24 | 南京熊猫电子股份有限公司 | Backup cell alarm |
-
2014
- 2014-05-19 CN CN201420255310.3U patent/CN203849324U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034955A (en) * | 2014-05-19 | 2014-09-10 | 国家电网公司 | Overvoltage warning device |
| CN105353321A (en) * | 2015-12-10 | 2016-02-24 | 南京熊猫电子股份有限公司 | Backup cell alarm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106786366A (en) | Current Transformer Secondary side open-circuit-protection early warning system | |
| CN104034955A (en) | Overvoltage warning device | |
| CN105226611A (en) | Short circuit/the overload protecting circuit of single-phase transformer | |
| CN203849324U (en) | Overvoltage warning indicator | |
| CN206442105U (en) | Current transformer monitoring and protecting system | |
| CN205248227U (en) | Multichannel fusing of metal alarm instruction circuit | |
| CN203479953U (en) | A current transformer open circuit alarm device | |
| CN204373807U (en) | A kind of isolating switch high-voltage connection temperature alarming device | |
| CN205982348U (en) | High voltage test power source controlling means | |
| CN204517380U (en) | Control with storage battery under-voltage protection controller | |
| CN204407863U (en) | Domestic safety electricity protection circuit | |
| CN204287350U (en) | Protective relaying device tripping operation outlet proving installation | |
| CN204206137U (en) | A kind of protective circuit of refrigeration plant | |
| CN211629615U (en) | Fast arc suppression and harmonic suppression and overvoltage protection device | |
| CN202649295U (en) | Safety indicating device used for high-voltage power line knife switch | |
| CN204376515U (en) | Outdoor high-voltage switch operating power self-energizing system | |
| CN204441634U (en) | There is the leakage protecting plug of the abnormal deixis of current supply circuit | |
| CN203217037U (en) | New Fault Indicator | |
| CN204101209U (en) | The self-energizing attention device that a kind of electric system joint is overheated | |
| CN202067673U (en) | Power capacitor with safety indication | |
| CN206594220U (en) | A kind of voltage attenuation detects circuit | |
| CN204376392U (en) | DC motor power circuit | |
| CN206947936U (en) | A kind of differential relay protection device | |
| CN204990589U (en) | Campus safety conflagration early warning system | |
| CN204615351U (en) | Power load restriction protection alarm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |
|
| CX01 | Expiry of patent term |