CN205484568U - Ground resistance's monitoring devices among electric power system - Google Patents
Ground resistance's monitoring devices among electric power system Download PDFInfo
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- CN205484568U CN205484568U CN201620123839.9U CN201620123839U CN205484568U CN 205484568 U CN205484568 U CN 205484568U CN 201620123839 U CN201620123839 U CN 201620123839U CN 205484568 U CN205484568 U CN 205484568U
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Abstract
本实用新型公开了一种电力系统中接地电阻的监测装置，包括监测系统，所述监测系统包括嵌入式CPU，所述嵌入式CPU的输入端与输入模块的输出端电连接，所述嵌入式CPU的输出端电连接数据比对模块的输入端，所述数据比对模块的输入端还与A/D转换器的输出端电连接，所述A/D转换器的输入端通过信号滤波器与信号采集模块的输出端电连接，且所述信号采集模块的输入端分别与电压互感器和电流互感器的输出端电连接。该电力系统中接地电阻的监测装置具有及时发现故障的功能，还具有及时完成报警工作的功能，从而可及时提示相关人员进行维修、保护等工作，可防止故障扩大化。
The utility model discloses a monitoring device for grounding resistance in a power system, comprising a monitoring system, the monitoring system includes an embedded CPU, the input end of the embedded CPU is electrically connected with the output end of the input module, the embedded The output end of the CPU is electrically connected to the input end of the data comparison module, and the input end of the data comparison module is also electrically connected to the output end of the A/D converter, and the input end of the A/D converter is passed through a signal filter It is electrically connected to the output end of the signal acquisition module, and the input end of the signal acquisition module is electrically connected to the output ends of the voltage transformer and the current transformer respectively. The monitoring device for grounding resistance in the power system has the function of discovering faults in time, and also has the function of completing the alarm work in time, so that relevant personnel can be prompted to perform maintenance and protection work in time, and the expansion of faults can be prevented.
Description
技术领域 technical field
本实用新型涉及电力系统技术领域，具体为一种电力系统中接地电阻的监测装置。 The utility model relates to the technical field of electric power systems, in particular to a monitoring device for grounding resistance in electric power systems.
背景技术 Background technique
在电力系统中，接地方式主要有电阻接地，谐振接地和不接地这几种接地方式。其中，电阻接地方式得到了越来越广泛的应用，导致中性点接地用的电阻数量也随之增多，如何对其工况进行监测成为了一个需要重视的问题。 In the power system, the grounding methods mainly include resistance grounding, resonance grounding and non-grounding. Among them, the resistance grounding method has been more and more widely used, resulting in an increase in the number of resistors used for neutral point grounding. How to monitor its working conditions has become a problem that needs attention.
针对这种情况，即对于在运行状态下的接地电阻，目前采用巡视人员用看、听、视、嗅等方法来监测，浪费人力、劳力的同时，还不能及时发现故障，从而不能及时进行报警等工作，导致故障扩大，对整个系统造成巨大的影响，为此，我们提出一种电力系统中接地电阻的监测装置。 In view of this situation, that is, for the grounding resistance in the running state, inspectors are currently used to monitor by means of watching, listening, watching, smelling, etc., which wastes manpower and labor, and at the same time, the fault cannot be found in time, so that the alarm cannot be issued in time And so on, lead to fault expansion, which has a huge impact on the whole system. Therefore, we propose a monitoring device for grounding resistance in power system.
实用新型内容 Utility model content
本实用新型的目的在于提供一种电力系统中接地电阻的监测装置，以解决上述背景技术中提出的问题。 The purpose of this utility model is to provide a monitoring device for grounding resistance in a power system, so as to solve the problems raised in the above-mentioned background technology.
为实现上述目的，本实用新型提供如下技术方案：一种电力系统中接地电阻的监测装置，包括监测系统，所述监测系统包括嵌入式CPU，所述嵌入式CPU的输入端与输入模块的输出端电连接。 In order to achieve the above object, the utility model provides the following technical solutions: a monitoring device for grounding resistance in a power system, including a monitoring system, the monitoring system includes an embedded CPU, the input terminal of the embedded CPU and the output of the input module electrical connection.
所述嵌入式CPU的输出端电连接数据比对模块的输入端，所述数据比对模块的输入端还与A/D转换器的输出端电连接，所述A/D转换器的输入端通过信号滤波器与信号采集模块的输出端电连接，且所述信号采集模块的输入端分别与电压互感器和电流互感器的输出端电连接。 The output end of the embedded CPU is electrically connected to the input end of the data comparison module, and the input end of the data comparison module is also electrically connected to the output end of the A/D converter, and the input end of the A/D converter The signal filter is electrically connected to the output end of the signal acquisition module, and the input end of the signal acquisition module is electrically connected to the output ends of the voltage transformer and the current transformer respectively.
所述数据比对模块的输出端通过反馈模块与嵌入式CPU的输入端电连接，所述嵌入式CPU的输出端与输出模块的输入端电连接。 The output end of the data comparison module is electrically connected to the input end of the embedded CPU through the feedback module, and the output end of the embedded CPU is electrically connected to the input end of the output module.
所述嵌入式CPU还与语音存储器双向电连接，所述嵌入式CPU的输出端还通过信号发射器与远程移动终端的输入端连接。 The embedded CPU is also bidirectionally electrically connected to the voice memory, and the output end of the embedded CPU is also connected to the input end of the remote mobile terminal through a signal transmitter.
优选的，所述输入模块包括操作面板。 Preferably, the input module includes an operation panel.
优选的，所述输出模块包括警报器和显示器。 Preferably, the output module includes an alarm and a display.
优选的，所述警报器为信号指示灯和蜂鸣报警器。 Preferably, the alarm is a signal indicator light and a buzzer alarm.
与现有技术相比，本实用新型的有益效果是：该电力系统中接地电阻的监测装置先通过输入模块和嵌入式CPU的配合，将合格的电压区间和电流区间发送至数据比对模块中作为数据比对基础，再通过该系统中电压互感器、电流互感器、信号采集模块、信号滤波器、A/D转换器和数据比对模块的配合，将采集到的电流、电压等实际数据与数据比对模块中的比对基础进行数据比对，若比对不合格，则该系统通过反馈模块、嵌入式CPU、输出模块中警报器的配合，完成报警工作，可使整个系统具有及时发现故障的功能，还具有及时完成报警工作的功能，从而可及时提示相关人员进行维修、保护等工作，可防止故障扩大化。 Compared with the prior art, the beneficial effect of the utility model is: the monitoring device of the grounding resistance in the power system first sends the qualified voltage range and current range to the data comparison module through the cooperation of the input module and the embedded CPU As the basis for data comparison, through the cooperation of voltage transformers, current transformers, signal acquisition modules, signal filters, A/D converters and data comparison modules in the system, the collected current, voltage and other actual data Compare the data with the comparison basis in the data comparison module. If the comparison is unqualified, the system will complete the alarm work through the cooperation of the feedback module, embedded CPU, and the alarm in the output module, which can make the whole system have a timely The function of finding the fault also has the function of completing the alarm work in time, so that the relevant personnel can be prompted to carry out maintenance, protection and other work in time, which can prevent the expansion of the fault.
附图说明 Description of drawings
图1为本实用新型结构示意图。 Fig. 1 is the structural representation of the utility model.
具体实施方式 detailed description
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。 The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
请参阅图1，本实用新型提供一种技术方案：一种电力系统中接地电阻的监测装置，包括监测系统，监测系统包括嵌入式CPU，嵌入式CPU的输入端与输入模块的输出端电连接。 Please refer to Figure 1, the utility model provides a technical solution: a monitoring device for grounding resistance in a power system, including a monitoring system, the monitoring system includes an embedded CPU, and the input end of the embedded CPU is electrically connected to the output end of the input module .
嵌入式CPU的输出端电连接数据比对模块的输入端，数据比对模块的输入端还与A/D转换器的输出端电连接，A/D转换器的输入端通过信号滤波器与信号采集模块的输出端电连接，且信号采集模块的输入端分别与电压互感器和电流互感器的输出端电连接。 The output end of the embedded CPU is electrically connected to the input end of the data comparison module, and the input end of the data comparison module is also electrically connected to the output end of the A/D converter. The input end of the A/D converter is connected to the signal through a signal filter. The output terminals of the acquisition module are electrically connected, and the input terminals of the signal acquisition module are respectively electrically connected with the output terminals of the voltage transformer and the current transformer.
数据比对模块的输出端通过反馈模块与嵌入式CPU的输入端电连接，嵌入式CPU的输出端与输出模块的输入端电连接。 The output end of the data comparison module is electrically connected to the input end of the embedded CPU through the feedback module, and the output end of the embedded CPU is electrically connected to the input end of the output module.
嵌入式CPU还与语音存储器双向电连接，嵌入式CPU的输出端还通过信号发射器与远程移动终端的输入端连接。 The embedded CPU is also bidirectionally electrically connected with the voice memory, and the output end of the embedded CPU is also connected with the input end of the remote mobile terminal through a signal transmitter.
输入模块包括操作面板，输出模块包括警报器和显示器，警报器为信号指示灯和蜂鸣报警器。 The input module includes an operation panel, the output module includes an alarm and a display, and the alarm is a signal indicator light and a buzzer alarm.
本实用新型使用前，该电力系统中接地电阻的监测装置先通过输入模块中的操作面板将合格的电压区间和电流区间发送至嵌入式CPU处，嵌入式CPU接收后，再将合格的电压区间和电流区间发送至数据比对模块中作为数据比对基础，该系统还通过输入模块中的操作面板将语音报警信号发送至嵌入式CPU处，嵌入式CPU接收后，再将语音报警信号存储至语音存储器中。 Before the utility model is used, the monitoring device of the grounding resistance in the power system first sends the qualified voltage interval and current interval to the embedded CPU through the operation panel in the input module, and after the embedded CPU receives it, the qualified voltage interval and the current range are sent to the data comparison module as the basis for data comparison. The system also sends the voice alarm signal to the embedded CPU through the operation panel in the input module. After the embedded CPU receives it, the voice alarm signal is stored in the in voice memory.
本实用新型使用时，通过该系统中电压互感器、电流互感器感应电压、电流信号，采集模块采集电压互感器和电流互感器所感应到的电压信号和电流信号，再将信号发送至信号滤波器中，信号滤波器将采集的电流、电压信号进行信号的调理滤波工作，再发送至A/D转换模块中，A/D转换器将采集到的电流、电压等实际数据进行模数转换，再与数据比对模块中的比对基础进行数据比对，若比对不合格，则该系统通过反馈模块、嵌入式CPU、输出模块中警报器的配合，实现报警工作，同时嵌入式CPU从语音存储器中调取语音报警信息，并通过信号发射器将语音报警信号发送到相关人员的远程移动终端上，完成远程报警的工作，整个系统具有及时发现故障的功能，还具有及时完成报警工作的功能，从而可及时提示相关人员进行维修、保护等工作，可防止故障扩大化。 When the utility model is used, the voltage and current signals are induced by the voltage transformer and current transformer in the system, and the acquisition module collects the voltage signal and current signal induced by the voltage transformer and current transformer, and then sends the signal to the signal filter In the device, the signal filter performs signal conditioning and filtering on the collected current and voltage signals, and then sends them to the A/D conversion module. The A/D converter performs analog-to-digital conversion on the collected current, voltage and other actual data. Then compare the data with the comparison basis in the data comparison module. If the comparison is unqualified, the system will realize the alarm work through the cooperation of the feedback module, embedded CPU, and the alarm in the output module. The voice alarm information is retrieved from the voice memory, and the voice alarm signal is sent to the remote mobile terminal of the relevant personnel through the signal transmitter to complete the remote alarm work. The whole system has the function of finding faults in time and completing the alarm work in time. function, so that relevant personnel can be promptly prompted to carry out maintenance, protection and other work, which can prevent the expansion of faults.
尽管已经示出和描述了本实用新型的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本实用新型的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本实用新型的范围由所附权利要求及其等同物限定。 Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.
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| CN114172790A (en) * | 2022-01-18 | 2022-03-11 | 常州大全电气有限公司 | An electronic control protection system based on optical fiber network |
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| CN114172790A (en) * | 2022-01-18 | 2022-03-11 | 常州大全电气有限公司 | An electronic control protection system based on optical fiber network |
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Effective date of registration: 20170621 Address after: Baiyun District of Guangzhou City, Guangdong province 510430 Shijing Street East Zhang Cun Ji Wei Xia Jie, No. 153 1 floor Patentee after: Guangzhou Muller Electric Co.,Ltd. Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20170621 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: Lin Cheng Zhen Cheng Nan long new road Texun Power Equipment Co. Ltd. Longyan 364200 Fujian County of Shanghang Province Patentee before: Wang Mingcheng |
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