CN203324364U - Leakage-current early warning system for low-voltage distribution network - Google Patents
Leakage-current early warning system for low-voltage distribution network Download PDFInfo
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Abstract
本实用新型提供了一种自动采集漏电流并能预警的农村低压配网漏电流预警系统，所述预警系统包括采集器、集中器、后台前置机及预警主站，采集器配设有第一无线通信模块，集中器配设有第二无线通信模块，预警主站包括主机及预警器，预警主站设定了若干预警阀值，所述集中器、采集器、后台前置机及预警主站无线连接。本实用新型可以自动采集每个电表箱内的数据，经过无线通信模块汇总至集中器，然后通过后台前置机进行数据处理，最后发送到预警主站，实现大范围的数据汇总，清晰显示在预警主站的主机上，当漏电流值超过预警值时，会出现不同的预警主机数据颜色。本实用新型所需工作人员少、数据准确、速度快，并能实时更新，具有很强的实际应用性。
The utility model provides a rural low-voltage distribution network leakage current early warning system that automatically collects leakage current and can provide early warning. The early warning system includes a collector, a concentrator, a background front-end machine and an early warning master station. A wireless communication module. The concentrator is equipped with a second wireless communication module. The early warning master station includes a host and an early warning device. The early warning master station sets a number of early warning thresholds. Master wireless connection. The utility model can automatically collect the data in each electric meter box, summarize it to the concentrator through the wireless communication module, then process the data through the background front-end processor, and finally send it to the early warning master station to realize a large-scale data summary and clearly display it on the On the host of the early warning master station, when the leakage current value exceeds the early warning value, different data colors of the early warning host will appear. The utility model requires fewer workers, has accurate data, is fast, and can be updated in real time, and has strong practical applicability.
Description
技术领域 technical field
本实用新型涉及一种漏电流预警系统，特别涉及低压配网漏电流预警系统。 The utility model relates to a leakage current early warning system, in particular to a low voltage distribution network leakage current early warning system.
背景技术 Background technique
随着迅猛发展的经济建设，随之而建的电网也越来越发达。低配电网存在以下问题： With the rapid development of economic construction, the power grid built along with it is becoming more and more developed. The low distribution network has the following problems:
1、低压分线漏电电流偏大，使漏保装置无法正常投运。部分家庭由于房子老旧，固有的漏电电流较大，有的甚至家保都无法投运（被用户自行拆除，退出运行），当此部分漏电电流累积到一定程度后，造成低压台区分线漏保无法正常投运。农村综合变下属的部分小工业用电用户，用电设备产生的漏电电流较大，或存在重复接地现象，造成分线漏保装置无法正常投入运行。 1. The leakage current of the low-voltage branch line is too large, so that the leakage protection device cannot be put into normal operation. Due to the old houses of some families, the inherent leakage current is relatively large, and some even the home insurance cannot be put into operation (it is dismantled by the user and withdrawn from operation). Guarantee that it cannot be put into normal operation. For some small industrial electricity users under the rural comprehensive substation, the leakage current generated by the electrical equipment is relatively large, or there are repeated grounding phenomena, resulting in the failure of the sub-line leakage protection device to be put into normal operation.
2路灯线零线搭接不规范，造成台区分线零线串接或重复接地。很多村用路灯线相线接入在一个台区的某路分线上，零线一般均借用台区低压线路零线，并且路灯线供电范围一般均超出相线所在台区的分线范围，有的甚至超出相线所在的低压台区范围；而超出范围部分路灯线零线搭就地搭接在台区其他低压分线的零线上或其他台区低压线路的零线上，造成一个台区相关低压分线的零线串接，甚至使两个（或两个以上）台区零线串接（造成零线重复接地），从而使低压分线的漏保装置无法正常投入运行。 2. The lap connection of the zero line of the lamp line is not standardized, resulting in serial connection or repeated grounding of the zero line of the station division line. In many villages, the phase line of the street light line is connected to a branch line of a station area. The zero line generally borrows the zero line of the low-voltage line in the station area, and the power supply range of the street lamp line generally exceeds the branch line range of the station area where the phase line is located. Some even exceed the range of the low-voltage station area where the phase line is located; and the neutral line of the part of the street lamp line that exceeds the range is lapped on the zero line of other low-voltage branch lines in the station area or the zero line of low-voltage lines in other station areas, resulting in a The neutral line of the relevant low-voltage sub-lines in the station area is connected in series, and even two (or more than two) station area zero lines are connected in series (resulting in repeated grounding of the neutral line), so that the leakage protection device of the low-voltage sub-line cannot be put into normal operation.
3、台区低压侧接地铜线被盗严重，错误将相邻台区零线接通使漏保装置无法投运。由于很多台区低压侧采用铜材料线材接地，部分地区的台区低压零线接地线经常被盗，造成台区低压零线失去接地而引发用户电器设备过电压损坏事故；少部分单位为防止零线被盗引发设备损坏事故，人为将台区间零线连通，防止一处接地线被盗零线失地危险，从而造成零线重复接地的，使漏保装置无法投运。 3. The grounding copper wire on the low-voltage side of the station area was seriously stolen, and the zero line of the adjacent station area was mistakenly connected, so that the leakage protection device could not be put into operation. Because the low-voltage side of many stations is grounded with copper material wires, the grounding wires of the low-voltage zero line in some areas are often stolen, causing the low-voltage neutral line in the station to lose grounding and causing overvoltage damage to electrical equipment for users; The equipment damage accident caused by the theft of the line, artificially connect the zero line between the stations to prevent the risk of a ground line being stolen and the zero line losing ground, resulting in repeated grounding of the zero line, making the leakage protection device unable to be put into operation.
4、缺少漏电流监测系统，运行人员无法及时掌控漏保投运情况。而漏保的管理制度要求每月对台区总保进行一次试跳测试，间隔时间长，无法及时发现漏保投运状态。其次，漏保的动作往往是由于某种漏电流产生，而目前的运行人员无法了解到漏保动作时漏电流的大小，实时负荷情况，故无法从根本上消除漏电故障点。 4. Lack of a leakage current monitoring system, the operating personnel cannot timely control the situation of leakage protection and operation. However, the management system of missing insurance requires a trial jump test for the general insurance of the station area every month. Secondly, the action of leakage protection is often caused by some kind of leakage current, and the current operating personnel cannot understand the magnitude of the leakage current and the real-time load situation when the leakage protection operates, so it is impossible to fundamentally eliminate the leakage fault point.
5、部分运行人员人为原因使能投运的漏保装置没有投入运行。由于部分运行人员在漏保装置的投产过程中，经常碰到由于其他原因引起的漏保装置投产不成功（如台区停电安装后，恢复供电时漏保装置投运成功，当天黑路灯照明起用时，由于路灯线零线串接原因引起漏保装置跳闸），从而造成习惯性思维，认为线路的漏电电流太大，在缺乏有效的漏电测试设备和手段时，经常在投产时将漏保装置退出运行。部分运行人员对新设备的学习能力不足，对新漏保装置繁杂的设置工作不能及时领会，在设备投产时未能设置正确的定值，从而造成漏保投产不成功。 5. Part of the operating personnel did not put into operation the leakage protection device that was put into operation due to artificial reasons. During the commissioning process of the leakage protection device, some operators often encounter the failure of the operation of the leakage protection device due to other reasons (for example, after the installation of the power outage in the station area, the leakage protection device was successfully put into operation when the power supply was restored, and the street lights were turned on in the dark of the day. When in use, the leakage protection device trips due to the series connection of the zero line of the street lamp line), resulting in habitual thinking that the leakage current of the line is too large. When there is a lack of effective leakage test equipment and means, the leakage protection device is often put into production. Quit running. Some operating personnel have insufficient learning ability for new equipment, and cannot understand the complicated setting work of the new leakage protection device in time, and fail to set the correct fixed value when the equipment is put into production, resulting in failure to put into operation the leakage protection device.
发明内容 Contents of the invention
本实用新型所要解决的技术问题是提供一种自动采集漏电流并能预警的农村低压配网漏电流预警系统，为此，本实用新型采用以下技术方案：所述预警系统包括安装在电表箱内的采集器、安装在低压配电柜内的集中器、后台前置机及预警主站，采集器用于采集电表箱内的漏电流值，所述采集器还配设有第一无线通信模块，所述集中器配设有第二无线通信模块，所述采集器通过无线通信模块将采集信息发送到集中器，集中器将采集信息发送到后台前置机，所述后台前置机将信息处理后所得的漏电流值发送到预警主站，所述预警主站包括主机及预警器，所述预警主站设定了若干预警阀值，当处理后所得漏电流值达到预警阀值时发出警报，所述集中器、采集器、后台前置机及预警主站无线连接。 The technical problem to be solved by the utility model is to provide a rural low-voltage distribution network leakage current warning system that automatically collects leakage current and can give early warning. For this reason, the utility model adopts the following technical scheme: the early warning system includes The collector, the concentrator installed in the low-voltage power distribution cabinet, the background front-end computer and the early warning master station, the collector is used to collect the leakage current value in the meter box, and the collector is also equipped with a first wireless communication module, The concentrator is equipped with a second wireless communication module, and the collector sends the collected information to the concentrator through the wireless communication module, and the concentrator sends the collected information to the background front-end processor, and the background front-end processor processes the information The leakage current value obtained in the end is sent to the early warning master station, and the early warning master station includes a host computer and an early warning device. The early warning master station sets a number of early warning thresholds, and when the processed leakage current value reaches the early warning threshold value, an alarm is sent. , the concentrator, the collector, the background front-end processor and the early warning master station are wirelessly connected.
进一步地，所述若干预警值为第一级预警阀值、第二级预警阀值，当漏电流值小于第一级预警阀值时，主机数据显示绿色，表示漏电流正常；当漏电流值大于第一级预警阀值，小于第二级预警阀值时，主机数据显示橙色，表示漏电流异常；当漏电流值大于第二级预警阀值，主机数据显示橙色，表示漏电流超标。 Further, the several warning values are the first-level warning threshold and the second-level warning threshold. When the leakage current value is less than the first-level warning threshold, the host data displays green, indicating that the leakage current is normal; when the leakage current value When it is greater than the first-level warning threshold and less than the second-level warning threshold, the host data will display orange, indicating that the leakage current is abnormal; when the leakage current value is greater than the second-level warning threshold, the host data will display orange, indicating that the leakage current exceeds the standard.
由于采用了本实用新型的技术方案，本实用新型采用安装在电表箱内的采集器、安装在低压配电柜内的集中器、后台前置机及预警主站，可以自动采集每个电表箱内的数据，经过无线通信模块汇总至集中器，然后通过后台前置机进行数据处理，最后发送到预警主站，实现大范围的数据汇总，清晰显示在预警主站的主机上，当漏电流值超过预警值时，会出现不同的预警主机数据颜色。本实用新型所需工作人员少、数据准确、速度快，并能实时更新，具有很强的实际应用性，确保了实际生产、管理的安全性及低成本特点。 Due to the adoption of the technical scheme of the utility model, the utility model adopts the collector installed in the meter box, the concentrator installed in the low-voltage power distribution cabinet, the background front-end processor and the early warning master station, which can automatically collect the data of each meter box. The data in the system is summarized to the concentrator through the wireless communication module, and then the data is processed by the background front-end processor, and finally sent to the early warning master station to realize a large-scale data summary and clearly displayed on the host of the early warning master station. When the leakage current When the value exceeds the warning value, different warning host data colors will appear. The utility model requires fewer workers, has accurate data, is fast, and can be updated in real time, has strong practical applicability, and ensures the safety and low cost of actual production and management.
附图说明 Description of drawings
图1为本实用新型的示意图。 Figure 1 is a schematic diagram of the utility model.
具体实施方式 Detailed ways
参考附图。本实用新型所述预警系统包括安装在电表箱内的采集器1、安装在低压配电柜内的集中器2、后台前置机3及预警主站4，电表箱内包括漏保21及电能表22，采集器用于采集电表箱内的漏电流值，所述采集器为微功率无线采集器，它还配设有第一无线通信模块11，所述集中器配设有第二无线通信模块12。采集器与集中器的具有安装方便、自动组网，调试方便等特点。
Refer to attached picture. The early warning system described in the utility model includes a
所述采集器1通过第一无线通信模块11将采集信息发送到集中器2，集中器2将采集信息发送到后台前置机3，所述后台前置机3将信息处理后所得的漏电流值发送到预警主站4。所述第一无线通信模块11和第二无线通信模块12采用通过专用无线频段（470MHz～510MHz）进行通讯，采集到的信息统一汇总至集中器2，通过GPRS上送至预警主站4。
The
所述预警主站4包括主机及预警器，所述预警主站4设定了若干预警阀值，当处理后所得漏电流值达到预警阀值时发出警报，所述集中器、采集器、后台前置机及预警主站无线连接。所述预警主站采用后台漏电流管理系统将采集到的漏电流数据，进行数据的接收、存储、分析、发布等处理工作，并通过WEB发布形式提供给用电管理部门各业务单位。
The early
进一步地，所述若干预警值为第一级预警阀值、第二级预警阀值，当漏电流值小于第一级预警阀值时，主机数据显示绿色，表示漏电流正常；当漏电流值大于第一级预警阀值，小于第二级预警阀值时，主机数据显示橙色，表示漏电流异常；当漏电流值大于第二级预警阀值，主机数据显示橙色，表示漏电流超标。 Further, the several warning values are the first-level warning threshold and the second-level warning threshold. When the leakage current value is less than the first-level warning threshold, the host data displays green, indicating that the leakage current is normal; when the leakage current value When it is greater than the first-level warning threshold and less than the second-level warning threshold, the host data will display orange, indicating that the leakage current is abnormal; when the leakage current value is greater than the second-level warning threshold, the host data will display orange, indicating that the leakage current exceeds the standard.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360236A (en) * | 2014-11-20 | 2015-02-18 | 国家电网公司 | Quick detection complete device and method for electric leakage points of 0.4 kV overhead line |
| CN104698344A (en) * | 2015-03-31 | 2015-06-10 | 国家电网公司 | Automatic early warning processing method for low voltages of customer electric meters |
| CN105676064A (en) * | 2016-01-12 | 2016-06-15 | 国网浙江省电力公司嘉兴供电公司 | User-side leakage current monitoring method and system |
| CN109541375A (en) * | 2018-12-20 | 2019-03-29 | 杭州华春科技有限公司 | A kind of earth detector for concentrated gas meter box |
| CN114019407A (en) * | 2021-09-27 | 2022-02-08 | 国网江苏省电力有限公司连云港市赣榆区供电分公司 | A leakage early warning system and method for low-voltage station area of rural distribution network |
| CN115209239A (en) * | 2022-07-06 | 2022-10-18 | 南京林洋电气有限公司 | Multistage concentrator system |
-
2013
- 2013-04-24 CN CN2013202129751U patent/CN203324364U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360236A (en) * | 2014-11-20 | 2015-02-18 | 国家电网公司 | Quick detection complete device and method for electric leakage points of 0.4 kV overhead line |
| CN104698344A (en) * | 2015-03-31 | 2015-06-10 | 国家电网公司 | Automatic early warning processing method for low voltages of customer electric meters |
| CN105676064A (en) * | 2016-01-12 | 2016-06-15 | 国网浙江省电力公司嘉兴供电公司 | User-side leakage current monitoring method and system |
| CN109541375A (en) * | 2018-12-20 | 2019-03-29 | 杭州华春科技有限公司 | A kind of earth detector for concentrated gas meter box |
| CN114019407A (en) * | 2021-09-27 | 2022-02-08 | 国网江苏省电力有限公司连云港市赣榆区供电分公司 | A leakage early warning system and method for low-voltage station area of rural distribution network |
| CN115209239A (en) * | 2022-07-06 | 2022-10-18 | 南京林洋电气有限公司 | Multistage concentrator system |
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