CN104460606B - Power Distribution Transformer remote monitoring system and method - Google Patents

Power Distribution Transformer remote monitoring system and method Download PDF

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CN104460606B
CN104460606B CN 201410648182 CN201410648182A CN104460606B CN 104460606 B CN104460606 B CN 104460606B CN 201410648182 CN201410648182 CN 201410648182 CN 201410648182 A CN201410648182 A CN 201410648182A CN 104460606 B CN104460606 B CN 104460606B
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transformer
current
temperature
remote monitoring
value
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CN 201410648182
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CN104460606A (en )
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康玉婷
李琳
张少丹
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上海理工大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

配电电力变压器远程监测系统,包括检测装置、远程监控装置、无线传感器网络装置和移动通信装置,其中检测装置包括电流检测装置,温度检测装置;电流检测装置检测配电电力变压器的电流并将检测信号发送至无线传感器网络装置,温度检测装置检测配电电力变压器的温度并将检测信号发送至无线传感器网络装置,无线传感器网络装置将上述电流检测信号和/或温度检测信号转换为数字检测值并通过移动通信装置发送至远程监控装置;远程监控装置接收移动通信装置发来的上述检测值并通过移动通信装置向无线传感器网络装置发送控制命令,以控制变压器输出的开关和/或变压器降温风扇的开关。 Power Distribution Transformer remote monitoring system, comprising detecting means, remote monitoring device, a wireless sensor network apparatus and a mobile communication device, wherein the detecting means comprises a current detecting means, temperature detecting means; current detecting means for detecting a power distribution transformer and the detected current sensor signal is sent to the wireless network device, the temperature detecting means detects a temperature distribution of the power transformer and a sensor detection signal is sent to the wireless network device, a wireless sensor network means the current detection signal and / or the temperature detection signal into a digital detection value, and transmitted by the mobile communication device to a remote monitoring apparatus; remote monitoring means receives the detected value of the mobile communication apparatus sent and sends a control command to the wireless sensor network apparatus via a mobile communication apparatus, to control the switch and / or transformer output transformer cooling fan switch. 本发明实现了防止变压器的自燃爆裂的效果。 The present invention achieves an effect of preventing self-ignition transformer burst.

Description

配电电力变压器远程监测系统及方法 Power Distribution Transformer remote monitoring system and method

技术领域 FIELD

[0001] 本发明涉及一种配电电力变压器远程监测系统,尤其是一种无线传感器网络的配电电力变压器远程监控系统。 [0001] The present invention relates to a remote monitoring system of the distributed power transformers, power transformers, especially distribution remote monitoring system in a wireless sensor network.

背景技术 Background technique

[0002] 配电电力变压器是一种将某一数值的交流电压(电流)变成频率相同的另一种或几种数值不同的电压(电流)的设备。 [0002] Power distribution transformer is a certain value of the AC voltage (current) become the same frequency or another of several different magnitude of the voltage (current) device. 它内部的绝缘衬垫和支架,大多采用纸、棉纱、布、木材等有机可燃物质,并有大量的绝缘油。 Its internal insulating spacer and bracket, use paper, cotton, cloth, wood and other combustible organic materials, and a large number of insulating oil. 因此,它的火灾危险性在于易燃烧,且变压器一直处于过载会减少使用寿命,而且会使内部温度过高,可燃的绝缘材料和绝缘油在高温下会分解燃烧,并产生大量气体,使变压器内部的压力急剧增加,造成外壳爆裂,大量喷油,燃烧的油流又进一步扩大了火灾危害,并造成大面积停电,影响正常的生产和生活。 Thus, it is easy to fire hazard in that the combustion, and the transformer has been in an overload will reduce the service life, and make the internal temperature is too high, insulation materials and combustible oil may decompose and burn at a high temperature, and large amount of gas, the transformer the sharp increase in internal pressure, resulting in shell burst, a lot of fuel injection, combustion of the oil flow has further expanded the fire hazard, and caused widespread power outages, affecting normal production and life. 本发明通过终端节点实时监测配电电力变压器的温度和电流,当超过警戒值时,将温度或者电流值通过无线传感器网络和移动通信网络传输到远程的上位机。 The present invention is a terminal node by real-time monitoring of power distribution transformers temperature and current, when more than the warning value, the temperature or the current value of the transmission to the remote host computer via wireless sensor networks and mobile communication networks. 在上位机的控制下终端节点可以对配电电力变压器采取相应的输出控制,防止变压器的自燃爆裂,减少事故的发生。 Terminal nodes may take control of the host computer at the respective output distribution control power transformer, the transformer to prevent spontaneous combustion burst, reduce accidents.

发明内容 SUMMARY

[0003] 本发明的目的是:提出一种基于无线传感器网络的配电电力变压器远程监控系统,该系统能够通过上位机对远程的变压器温度与电流实时监测,当变压器出现异常时,能够进行远程人工控制或者自动控制,其能够解决防止变压器的自燃爆裂,减少事故的发生的问题。 [0003] The object of the present invention are: to provide a power distribution transformer remote monitoring system based on wireless sensor networks, the system is capable of real-time monitoring of the current transformer temperature through the remote host computer, the transformer when abnormality occurs, enabling remote manual control or automatic control, which can solve the transformer to prevent spontaneous combustion burst, reducing the problems of the accident.

[0004] 为实现本发明之目的,采用以下技术方案予以实现: [0004] To achieve the object of the present invention, it is implemented by the following technical scheme:

[0005] 一种配电电力变压器远程监测系统,包括检测装置、远程监控装置、无线传感器网络装置和移动通信装置,其中检测装置包括:电流检测装置,温度检测装置; [0005] A distributed power transformer remote monitoring system, comprising detecting means, remote monitoring device, a wireless sensor network apparatus and a mobile communication device, wherein the detecting means comprises: current detecting means, temperature detecting means;

[0006] 其特征在于: [0006] wherein:

[0007] 电流检测装置检测配电电力变压器的电流并将检测信号发送至无线传感器网络装置,温度检测装置检测配电电力变压器的温度并将检测信号发送至无线传感器网络装置,无线传感器网络装置将上述电流检测信号和/或温度检测信号转换为数字检测值并通过移动通信装置发送至远程监控装置; [0007] The current detection signal and current detection means detects a power distribution transformer to the wireless sensor network apparatus, the temperature detecting means detects a temperature distribution of the power transformer and a sensor detection signal is sent to the wireless network device, a wireless sensor network means the current detection signal and / or the temperature detection signal into a digital detection value, and sent to the remote monitoring device through the mobile communication device;

[0008]远程监控装置接收移动通信装置发来的上述检测值并通过移动通信装置向无线传感器网络装置发送控制命令,以控制变压器输出的开关和/或变压器降温风扇的开关。 [0008] The remote monitoring device receives the detected value of the mobile communication device and sent by the sensor transmits a control command to the wireless device through a mobile communication network means, to control the switch and / or transformer output transformer cooling fan switch. [0009]如上所述的配电电力变压器远程监测系统,其特征在于: [0009] Remote monitoring of power transformers and distribution system as described above, wherein:

[0010]电流检测装置包括电流互感器和电流互感器信号调理电路,其中电流互感器用于采集变压器输出级的电流信号,电流互感器信号调理电路将上述电流信号转换成电压信号; [0010] The current detection means includes a current transformer and current transformer signal conditioning circuit, wherein the current transformer used to acquire a signal current of the transformer output stage, the current transformer signal conditioning circuit converts the current signal into a voltage signal;

[0011]温度检测装置包括温度传感器和温度传感器信号调理电路,其中温度传感器采集变压器油箱温度,将温度变化转换为电阻值变化,温度传感器信号调理电路将温度传感器的电阻值转换为电压信号; [0011] The temperature detecting means includes a temperature sensor and a temperature sensor signal conditioning circuit, wherein the temperature of the transformer tank temperature sensor acquisition, converting the temperature change to change the resistance value, the temperature sensor signal conditioning circuit converts the resistance value of the temperature sensor into a voltage signal;

[0012] 无线传感器网络装置包括终端节点和协调器,终端节点用于温度和电流的数据采集,将电流互感器信号调理电路和温度传感器信号调理电路转换后的电压信号进行AD转换以形成数字检测值;协调器用于将终端节点和协调器建立无线网络。 [0012] The wireless sensor network including a terminal device and a coordinator node, a terminal node for the data collection temperature and current, the voltage signal of the current transformer signal conditioning circuit and the temperature sensor signal conditioning circuit for converting the detection AD conversion to form a digital value; coordinator node and a terminal for establishing a wireless network coordinator.

[0013] 如上所述的配电电力变压器远程监测系统,其特征在于:无线传感器网络装置对所述数字检测值进行检测,当其中的一者或两者都超过警戒值时,将上述电流数字检测值和/或温度数字检测值通过移动通信装置发送至远程监控装置。 [0013] Remote monitoring of power transformers and distribution system as described above, wherein: said wireless sensor network for digital detection means detecting a value, wherein when one or both exceed the warning values, the number of the current detection value and / or the temperature detected digital value to the remote monitoring device through the mobile communication apparatus.

[0014]如上所述之一的配电电力变压器远程监测系统,其特征在于:远程监控装置监控上述电流、温度数字检测值,当其中之一或二者在预定时间内一直处于高于警戒值时,通过移动通信装置发送控制变压器输出的开关和/或变压器降温风扇的开关的命令。 [0014] The distributed power system of one of the transformers remote monitoring as described above, wherein: said current remote monitoring device monitors, digital temperature detection value, when the value is higher than one or both of the warning has been in a predetermined time when the transmission control transformer output through the mobile communication apparatus switch and / or transformer cooling fan switch command.

[0015] 如上所述之一的的配电电力变压器远程监测系统,其特征在于:该系统还包括驱动电路,在无线传感器网络装置的控制下驱动降温风扇开关和变压器输出开关。 Power distribution transformers of remote monitoring system of one of the above [0015], wherein: the system further includes a drive circuit for driving the cooling fan switch and transformer output switch under the control of the wireless sensor network device.

[0016] 如上所述之一的配电电力变压器远程监测系统,其特征在于:当所述变压器的电流和温度数字检测值其中之一获两者超过极限值时,无线传感器网络装置直接断开变压器输出开关。 Power distribution transformers of remote monitoring system of one of the [0016] As described above, wherein: when one of the digital current and temperature detection value obtained wherein both of the transformer exceeds a limit value, the wireless sensor network disconnection device is directly transformer output switch.

[0017] 如上所述之一的配电电力变压器远程监测系统,其特征在于:远程监控装置将收到的温度和电流离散值连续化,分别实时绘制成温度曲线和电流曲线,并且将数据存入数据库。 [0017] The distributed power system of one of the transformers remote monitoring as described above, wherein: the remote monitoring device and the temperature of the received continuous current discrete values, are plotted in real time temperature curve and current curve, and the data is stored into the database.

[0018] 如上所述之一的配电电力变压器远程监测系统,其特征在于:无线传感器网络装置采用ZIGBEE模块;移动通信装置采用GPRS模块。 Power distribution transformers of remote monitoring system of one of the [0018] As described above, comprising: a wireless sensor network apparatus using ZIGBEE module; mobile communication device using GPRS module.

[0019]如上所述之一的配电电力变压器远程监测系统,其特征在于:远程监控装置包括上位机和微处理器。 Power distribution transformers of remote monitoring system of one of the [0019] As described above, wherein: the remote monitoring means comprises a host computer and a microprocessor.

[0020] 一种上所述之一的所述配电电力变压器远程监测系统进行配电电力变压器远程监测的方法,其特征在于包括如下步骤: [0020] A method for distributed power distribution transformer remote monitoring system remote monitoring of power transformers in the upper one, characterized by comprising the steps of:

[0021] 电流检测装置检测配电电力变压器的电流并将检测信号发送至无线传感器网络装置,温度检测装置检测配电电力变压器的温度并将检测信号发送至无线传感器网络装置,无线传感器网络装置将上述电流检测信号和/或温度检测信号转换为数字检测值并通过移动通信装置发送至远程监控装置; [0021] The current detection signal and current detection means detects a power distribution transformer to the wireless sensor network apparatus, the temperature detecting means detects a temperature distribution of the power transformer and a sensor detection signal is sent to the wireless network device, a wireless sensor network means the current detection signal and / or the temperature detection signal into a digital detection value, and sent to the remote monitoring device through the mobile communication device;

[0022]远程监控装置接收移动通信装置发来的上述检测值并通过移动通信装置向无线传感器网络装置发送控制命令,以控制变压器和/或变压器降温风扇的开关。 [0022] The remote monitoring device receives the detected value of the mobile communication device and sent by the sensor transmits a control command to the wireless device through a mobile communication network means to control the transformer and / or transformer cooling fan switch.

附图说明 BRIEF DESCRIPTION

[0023]图1为本发明无线传感器网络的配电电力变压器远程监控系统示意图; [0023] FIG 1 the distribution power transformers remote monitoring system schematic diagram of a wireless sensor network invention;

[0024]图2为本发明温度传感器的信号调理电路示意图。 [0024] FIG. 2 is a schematic view of a temperature sensor signal conditioning circuit of the present invention.

[0025]图3为本发明电流互感器的信号调理电路示意图。 [0025] FIG. 3 signal conditioning circuit diagram illustrating a current transformer of the present invention.

具体实施方式 detailed description

[0026]图1为本发明无线传感器网络的配电电力变压器远程监控系统示意图,本发明无线传感器网络的配电电力变压器远程监控系统包括电流互感器1、电流互感器信号调理电路2、温度传感器3、温度传感器信号调理电路4、第一驱动电路5、第二驱动电路6、ZIGBEE模块(7、8)、GPRS通信模块9、微处理器10,上位机11和数据库12,其中ZIGBEE模块包括终端节点(RFD) 7和协调器(FFD) 8,终端节点7用于温度和电流的数据采集并且进行相应的控制,协调器8主要是建立ZIGBEE网络,当终端节点加入协调器的网络后,RFD和FH)之间就能通过无线网络进行数据的相互传输。 [0026] Figure 1 is a schematic view of a power distribution transformer remote monitoring system of the invention, a wireless sensor network, a power distribution transformer remote monitoring system according to the present invention is a wireless sensor network comprises a current transformer, the current transformer signal conditioning circuit 2, a temperature sensor 3, a temperature sensor signal conditioning circuit 4, a first driving circuit 5, the second driving circuit. 6, ZIGBEE module (7,8), GPRS communication module 9, the microprocessor 10, the host computer 11 and the database 12, wherein the module comprises ZIGBEE 8 terminal node, a terminal node (RFD) 7 and a coordinator (FFD) 7 for temperature and current data acquired and the corresponding control, coordinate 8 ZIGBEE network is built primarily, when addition of the terminal node of the network coordinator, mutual data transmission can be carried out over the wireless network between the RFD and FH). 每个终端节点负责一个变压器的温度和电流参数检测,实际上终端节点可以有多个,为了说明方便,本系统只列出了两个。 Each terminal node is responsible for a current transformer and a temperature detection parameter, in fact, there may be multiple node terminals, for convenience of explanation, the present system only the two lists.

[0027] 第一、第二驱动电路4、5分别驱动一个继电器,第一驱动电路4对应的继电器用于控制变压器输出的开关,第二驱动电路5对应的继电器用于控制变压器降温风机的开关。 [0027] First, a second driving circuit driving a relay 4, 5, a first driving circuit 4 for controlling the relay corresponding transformer output switch, a second driving circuit 5 for controlling the corresponding relay switch of the transformer cooling fan . [0028]电流互感器1,采集变压器输出级U、V、W三相的电流信号,通过电流互感器信号调理电路2将微电流信号转换成电压信号输出。 [0028] 1 current transformer, the transformer output stage collection U, V, W of the three-phase current signals, converts the 2 micro-current signal into a voltage signal by the current transformer output signal conditioning circuit. 终端节点的微处理器通将电压信号进行ADR 换,转换的结果一旦超过设定的电流警戒值,则立即将变压器当前的相电流发送到远程上位机,如果超过了极限值,直接通过驱动电路1断开变压器的输出。 The microprocessor through the terminal node of the voltage signal ADR change, the current alert value once exceeds the set result of the conversion, then immediately send the current phase current transformer to a remote host computer, if the limit value is exceeded, directly by the drive circuit 1 disconnect the transformer output. 采用这一方式,无需实时通过GPRS网络传输电流数据,而只是在超过设定的电流警戒值时才进行传输,可以极大的节省网络、信道资源,上位机的处理能力也可以得到节省或无需高性能的上位机,节约了成本。 With this mode, no current real-time transmission of data through the GPRS network, but transmitted only when the current exceeds the set warning value, can greatly save network and channel resources, processing capability of the PC can be obtained without the need to save or PC performance, cost savings.

[0029]温度传感器3,实时测量变压器内部的温度,在靠近变压器油箱上表面处插入3个传感器,每个温度传感器的输出接RFD的一个10输入口,通过上述温度传感器RFD实时采集变压器的油温,一旦温度超过了设定的警戒值,立刻将当前变压器的温度值发送到远程上位机,如果超过了极限值,直接通过变压器切断电流的输出,如果变压器的油温长时间维持在警戒值与极限值之间,远程监控中心可以发出开启变压器的降温风机命令,实现变压器的降温。 [0029] The temperature sensor 3 measured in real time the temperature inside the transformer, at the sensor surface 3 is inserted in the transformer tank near the output of each temperature sensor 10 is connected to an input port RFD, acquired by the temperature sensor RFD real transformer oil temperature, when the temperature exceeds the warning value is set, immediately transmitting a temperature value of the current transformer to a remote host computer, if the limit value is exceeded, the transformer output current directly through the cut, if the transformer oil temperature is maintained for a long time in the guard value between limits and remote monitoring center can issue a command to turn on the fan to cool the transformer, the transformer to achieve cooling. 采用这一方式,无需实时通过GPRS网络传输温度数据,而只是在超过设定的电流警戒值时才进行传输,可以极大的节省网络、信道资源,上位机的处理能力也可以得到节省或无需高性能的上位机,节约了成本。 With this mode, no transmission of real-time temperature data through the GPRS network, but transmitted only when the current exceeds the set warning value, can greatly save network and channel resources, processing capability of the PC can be obtained without the need to save or PC performance, cost savings.

[0030] ZIGBEE模块的微处理器采用TI公司的具有射频功能的CC2530,作为ZIGBEE网络的终端节点7,其实时采集配电电力变压器的电流和温度值,协调器8具有网络协调能力,多个终端节点7和1个协调器8形成星型的ZIGBEE网络,当终端节点较多且与协调器距离较远时, 可附加具有路由功能的路由节点完成终端采集的数据与协调器的无线传输。 [0030] ZIGBEE module uses a microprocessor having a radio frequency function TI CC2530 companies, as terminal node 7 ZIGBEE network, real-time collection and distribution power transformers current temperature values, the coordinator coordination with network 8, a plurality of end nodes 7 and 8 a coordinator ZIGBEE network is formed star-shaped, and when the number of terminals and the coordinator node distant, the routing node can be added to complete the routing function of wireless terminal transmission data acquired with the coordinator. 当温度或者电流的值大于设定的警戒值时,协调器8通过与之相连的GPRS模块,传输数据到远程的上位机,上位机收到数据后,实时显示。 When the value of the temperature or current is greater than the set warning value, GPRS module 8 by the coordinator associated therewith, to transfer data to a remote host computer, the host computer after receiving the data, real-time display.

[0031]协调器8的数据通过GPRS网络传输到远程的监控中心,GPRS通信模块采用GR47并且配以S頂卡来实现。 Data [0031] transmitted to the coordinator 8 remote monitoring center through the GPRS network, GPRS communication module using GR47 and S together with the top card is achieved. 变压器现场和远程监控中心分别使用一个GPRS通信模块。 Transformer site and a remote monitoring center, respectively, using the GPRS communication module. 远程监控中心的GPRS通信模块通过微处理器与电脑相连。 GPRS remote monitoring center via the communication module is connected to the computer microprocessor.

[0032]上位机11可带有数据库12,可以将采集到的电流和温度的数据进行存储,方便查询变压器的运行情况。 [0032] PC 11 may be provided with data in the database 12, current can be collected for storage and temperature, easily check the operation of the transformer.

[0033]温度传感器3采用WZP型铂电阻温度传感器Pt 1000,其线性度好,测量时,直接插到变压器油箱上表面,通过如图2所示的温度传感器信号调理电路4将电阻值转换为电压值。 [0033] The use of the temperature sensor 3 WZP platinum resistance temperature sensor Pt 1000, good linearity, measuring, directly into the surface of the transformer tank, the temperature sensor signal conditioning circuit 4 shown in FIG. 2 is converted to the resistance value Voltage value. 其中电容C是降噪电容器,实际取值〇. luF,可采用MAX6025提供2.5V的基准电压。 Wherein C is the capacitance of the snubber capacitors, the actual value of square. LUF, MAX6025 can be employed to provide a reference voltage of 2.5V. 运放OP1组成的反向放大器的反馈电阻用Pt代替,实现恒流源输出,保证随着温度改变Pt值改变时,输出电压呈线性的变化,运放0P2将前级运放输出再反相放大输出,变成符合要求的电压输出。 A feedback resistor operational amplifier OP1 an inverting amplifier consisting of Pt in place, to achieve a constant current source output, Pt changes with temperature guarantee value changes, the output voltage change linearly, the pre-amplifier 0P2 is re-inverted output of op amp amplifier output, the output voltage becomes satisfactory. 在实际的温度测试之前,首先需要进行调零和调满。 Prior to the actual temperature of the test, we first need to zero and full tone. 用精密可调电阻代替Ptl〇〇〇连接到电路中,改变其阻值,使其为〇°C时Pt的等效电阻值1〇〇〇欧,然后调节R6直至㈤丨的输出为〇。 Replaced with a precision adjustable resistor Ptl〇〇〇 into the circuit, the resistance change, it is the equivalent resistance value when Pt billion Euro 1〇〇〇 ° C, and then adjusted until the output v Shu R6 is square. 然后改变精密可调电阻值,使其为15〇°C时Pt的等效电阻值1753.3欧,然后调节R6直至0P2 的输出为l5〇〇mv,完成调零和调满。 Precision adjustable resistance value is changed then, it is the equivalent resistance value when Pt 1753.3 European 15〇 ° C, and then adjusted until the output R6 is l5〇〇mv 0P2, complete zero and full tone. 0P2的输出信号连到CC2530的一个ADC输入端口,实现AD 转换。 0P2 is connected to an output signal of an ADC CC2530 input ports for the AD conversion.

[0034]电流互感器1采用精密电流互感器CT将大电流变换成低电流信号。 [0034] 1 using precision current transformer current transformer CT large currents into the low-current signal. 如图3所示的电流互感器信号调理电路2中的D1和D2为瞬态电压抑制二极管,抑制电压或者电流的瞬态干扰,防止电压和电流的突然上升。 2 in FIG. 3 a current transformer signal conditioning circuit D1 and D2 for the transient voltage suppress diode to suppress transient interference voltage or current, to prevent a sudden rise in voltage and current. 前级运放芯片采用低功耗、低噪声的高速运放LM224D。 Pre-amplifier chip uses low-power, low-noise, high-speed operational amplifier LM224D. 由于在电网中会存在各种非线性用电设备,所以会出现大量的谐波信号,因此在A/D转换之前还需要加入低通滤波电路。 Since there will be various nonlinear electrical devices in the power grid, so there will be a lot of harmonic signals, prior to A / D conversion needs a low-pass filter circuit. 图3所示的电流互感器信号调理电路2主要对传感器变化的测量信号进行放大、限幅、滤波以方便A/D转换。 FIG current transformer signal conditioning circuit 32 illustrated in major changes in the measurement signal is amplified sensor, limiting, filtering to facilitate A / D conversion. 采用带反馈的二阶有源低通滤波电路,在其正向输入端有2个RC低通滤波器,滤波效果较一阶滤波好,提高系统的抗干扰能力。 Second-order active low pass filter circuit with feedback, has two RC low-pass filter, a good filtering effect compared with a first-order filter, to improve the anti-interference ability of the system at its positive input.

[0035]温度传感器和电流互感器经过各自的信号调理电路输出的模拟信号输入到CC2530的I2位模数转换器进行转换,采用软件配置的方式配置采样通道,确定采样序列并保存采样结果。 [0035] The temperature sensor and a current transformer through a respective signal conditioning circuit output signal is input to an analog CC2530 I2 bit ADC converts, by way of a software configuration of the sampling channel configuration, is determined and stored sample sequence the sampling result.

[0036] 第一和第二驱动电路5、6,分别采用光耦和NPN型三极管驱动继电器实现。 [0036] The first and second drive circuits 5 and 6, respectively, optocoupler and the relay driving NPN transistor implementation. 光耦主要用于隔离,其中光耦输入部分一端接高电平,一端串入电阻后分别连接CC2530的P1.0和P1.1口。 Optocoupler mainly used to isolate, wherein a portion of the input optocoupler high end, are connected to the P1.0 and P1.1 ports CC2530 rear end of the series resistor. 输出部分,一端接高电平,一端接三极管的基极,继电器的输入部分串入三极管的集电极。 An output section, a high end, a terminating base of the transistor, in series with the relay the input section transistor collector. 当10 口输出低电平时,光耦输出级导通,同时三极管饱和导通,继电器动作。 When the 10 output low, the output stage optocoupler is turned on, while the transistor saturated conduction, the relay. 降温风机和变压器的输出开关分别串入继电器的输出级,其中降温风机接入继电器的常开触点, 变压器输出开关接入继电器的常闭触点。 Cooling fan and the output switch in series with each transformer relay output stage, wherein the normally open contact cooling, the transformer output switch access fan relay normally closed contact of the relay access.

[0037] 协调器节点和终端节点之间的ZIGBEE网络采用协议栈Z-stack实现,上电后根据flash中的配置,分别设置为协调器节点和终端节点。 [0037] ZIGBEE network coordinator between the nodes and terminal nodes using the protocol stack of Z-stack implementation in accordance with the flash configuration, are set to the terminal node and the coordinator node after power. 协调器首先建立网络,终端节点发现网络存在后,向协调器发送加入网络请求。 Firstly, a network coordinator, the network node discovers the presence of the terminal, sends a request to join the network coordinator. 经过多次请求与响应命令后,二者建立连接,可以通过形成的ZIGBEE网络传输信息。 After several post request response command both to establish a connection, the information can be formed by the ZIGBEE network transmission. 由于网络是由协调器建立,为了保证稳定的传输,协调器节点的电源必须稳定,通常加以后备电源。 Since the network is established by the coordinator, in order to ensure stable transmission, power coordinator node must be stable, typically be backup power. 终端节点采用定时扫描的方式检测电流与温度的信息,当电流与温度的值超过警戒值时,将电流或电压值加上该节点的ID号封装成一帧数据,通过ZIGBEE网络发送到协调器。 Terminal node adopts the timing scanning mode detecting information of current and temperature, when the value of the current and the temperature exceeds the alarm value, the current or voltage value plus the ID number of the node is encapsulated into a frame of data transmitted to the coordinator through the ZIGBEE network. 协调器节点收到终端节点的数据后,通过GR47模块,发送数据到远程的监控中心。 After the coordinator node receives the data terminal node, through GR47 module, transmits the data to the remote monitoring center.

[0038] GPRS模块9为GR47,其具有内嵌的TCP/IP协议栈。 [0038] GPRS module 9 GR47, having a TCP / IP protocol stack embedded. 变压器现场GR47的UATR3和协调器的UART串口相连,用于数据传输通过,由于GR47串口电平为2 • 7V而协调器的串口电平为3.3V,因此二者之间通过电平转换芯片MAX3372E进行转换。 GR47 field of the transformer and the coordinator UATR3 UART serial port, for data transmission, since the level of the serial GR47 2 • 7V and serial level coordinator is 3.3V, so therebetween through the level conversion chip MAX3372E conversion. 在使用GR47进行数据发送和接收之前,先通过GR47的UART1 口,使用AT指令对其进行设置,使其由命令模式进入数据模式。 Prior to use to send and receive data GR47, GR47 first through UART1 port using AT commands to set them, so that the mode enter command data mode. 微处理器10采用具有多路串口的MSP430F149微处理器,远程监控中心的GR47模块的UART3 与微处理器10的UART0串口相连,用于数据的传输,二者之间同样通过MAX3372E进行电平转换。 MSP430F149 microprocessor 10 employs a microprocessor having a multiple serial port, GR47 UART3 microprocessor module remote monitoring center UART0 serial port 10, for transmitting data, the same level conversion therebetween by MAX3372E . 微处理器10的UATR2通过MAX232电平转换和电脑串口相连,实现上位机和微处理器1〇之间的数据传输。 UATR2 serial port of the microprocessor 10 through the MAX232 level converter and a computer, data transfer between the host computer and a microprocessor 1〇. 在使用GR47进行数据收发之前,也先通过GR47的UART1 口,使用AT指令设置器为数据模式,从而实现变压器现场和远程监控中心的数据传输。 Prior to use for data transmission and reception GR47, GR47 first while via UART1 port of the AT command set is used as the data mode, so that data transmission transformer site and remote monitoring center. 此外GR47模块都需插入开通的SIM卡。 In addition GR47 module to be inserted into the opening of the SIM card.

[0039]上位机将收到的温度和电流离散值连续化,分别实时绘制成温度曲线和电流曲线,并且将数据存入数据库。 [0039] The host computer receives the current temperature and continuous discrete values ​​were plotted in real time temperature curve and current curve, and the data stored in the database. 当温度和/或电流在预定时间内一直处于高于警戒值时,通过上位机发送开启降温风机和断开变压器输出开关命令,以保护变压器。 When the temperature and / or current is higher than the warning value has been transmitted and turn OFF the cooling fan transformer output switch command through the host computer, in order to protect the transformer at a predetermined time. 若电流或者温度值直接超过极限值,终端节点直接动作,保护变压器。 If the current exceeds the limit value or the temperature value directly, the direct operation of a terminal node, the transformer protection.

[0040] 本发明的特点在于采用ZIGBEE网络和GPRS网络,可同时实现多个配电电力变压器的温度和电流值远程的实时监测,当变压器出现异常时,能够进行远程人工控制或者自动控制,防止变压器的自燃爆裂,减少事故的发生。 [0040] The feature of the invention is the use of ZIGBEE network and GPRS networks, real-time remote monitoring of the temperature and the current value of a plurality of distribution can be achieved at the same power transformer, the transformer when an exception occurs, enabling remote manual control or automatic control, to prevent transformer burst of spontaneous combustion, reduce accidents.

[0041]以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。 [0041] The above are only preferred embodiments of the present invention but are not intended to limit the scope of the present invention.

Claims (7)

  1. 1. 一种配电电力变压器远程监测系统,包括检测装置、远程监控装置、无线传感器网络装置和移动通信装置,其中检测装置包括:电流检测装置,温度检测装置; 其特征在于: 电流检测装置检测配电电力变压器的电流并将检测信号发送至无线传感器网络装置, 温度检测装置检测配电电力变压器的温度并将检测信号发送至无线传感器网络装置,无线传感器网络装置将上述电流检测信号和/或温度检测信号转换为数字检测值并通过移动通信装置发送至远程监控装置; 远程监控装置接收移动通信装置发来的上述检测值并通过移动通信装置向无线传感器网络装置发送控制命令,以控制变压器输出的开关和/或变压器降温风扇的开关; 所述无线传感器网络装置对所述数字检测值进行检测,且并不是实时传输数字检测值,而是当其中的一者或两者都超过警戒值 1. A power distribution power transformer remote monitoring system, comprising detecting means, remote monitoring device, a wireless sensor network apparatus and a mobile communication device, wherein the detecting means comprises: current detecting means, temperature detecting means; characterized in that: a current detecting means for detecting current detection signal distribution and power transformers to the wireless sensor network apparatus, the temperature detecting means detects a temperature distribution of the power transformer and a sensor detection signal is sent to the wireless network device, a wireless sensor network means the current detection signal and / or temperature detection signal into a digital detection value, and sent to the remote monitoring device through the mobile communication device; remote monitoring means receives the detected value of the mobile communication apparatus sent and the control command to transmit a wireless sensor network apparatus via a mobile communication apparatus, for controlling the transformer output the switch and / or transformer cooling fan switch; said wireless sensor network device detects the digital detection value, and not real-time transmission of digital detection value, but when one or both of a value above the warning ,才将上述电流数字检测值和/或温度数字检测值通过移动通信装置发送至远程监控装置; 当所述变压器的电流和温度数字检测值其中之一或两者超过极限值时,无线传感器网络装置直接断开变压器输出开关; 电流检测装置包括电流互感器和电流互感器信号调理电路,其中电流互感器用于采集变压器输出级的电流信号,电流互感器信号调理电路将上述电流信号转换成电压信号,其中电流互感器信号调理电路中包括两个首尾相连的瞬态电压抑制二极管,其中第一瞬态电压抑制二极管的正极和负极分别与第二瞬态电压抑制二极管的负极和正极相连,再与电流互感器的输出端并联连接,用于抑制电压或者电流的瞬态干扰,防止电压和电流的突然上升;电流互感器信号调理电路前级运放芯片采用低功耗、低噪声的高速运放LM224D;电流互感器调理电路的前级 Before the detection of the current digital value and / or the temperature digital value is sent to the remote monitoring detection means by the mobile communication device; when the current and temperature detected digital values ​​wherein one or both of the transformer exceeds a limit value, the wireless sensor network direct output switch means disconnecting the transformer; current detecting means includes a current transformer and current transformer signal conditioning circuit, wherein the current transformer used to acquire a signal current of the transformer output stage, the current transformer signal conditioning circuit converts the current signal into a voltage signal wherein the current transformer signal conditioning circuit comprises a transient voltage suppress diode are connected end to end of two, wherein the first transient voltage suppress diode cathode and the anode and cathode respectively connected to the anode of the diode and a second transient voltage suppression, and then output of the current transformer is connected in parallel, for suppressing transient interference voltage or current, to prevent a sudden rise in voltage and current; signal conditioning circuit before the current transformer stage op-amp chip low-power, low-noise high-speed operational amplifier LM224D; pre-conditioning circuit of the current transformer 放芯片与后级运放芯片之间设有低通滤波电路,该低通滤波电路是采用带反馈的二阶有源低通滤波电路,在其正向输入端有2个RC低通滤波器; 温度检测装置包括温度传感器和温度传感器信号调理电路,其中温度传感器采用WZP 型铀电阻温度传感器Pt 1000,温度传感器采集变压器油箱温度,将温度变化转换为电阻变化,温度传感器信号调理电路将温度传感器的电阻值转换为电压信号,所述温度传感器信号调理电路将电阻值转换为电压值;其包括运放OP 1和运放0P2;运放OP1组成的反向放大器的反馈电阻用PtlOOO代替,实现恒流源输出,保证随着温度改变PtlOOO值改变时,输出电压呈线性的变化,运放0P2将前级运放输出再反相放大输出,变成符合要求的电压输出;在实际的温度测试之前,首先需要进行调零和调满,用精密可调电阻代替PtlOOO连接到电路中, 改变其阻 Is provided between the discharge chip and the op amp circuit chip low-pass filter, the low pass filter circuit is a second-order active low pass filter circuit with feedback, has two RC low-pass filter at its positive input ; temperature detection means comprises a temperature sensor and a temperature sensor signal conditioning circuit, wherein the temperature sensor WZP uRANIUM resistance temperature sensor Pt 1000, a temperature sensor to collect the transformer tank temperature, will convert the temperature change of the resistance change, a temperature sensor signal conditioning circuit temperature sensor the resistance value into a voltage signal, said temperature sensor signal conditioning circuit is converted to the resistance value of the voltage value; comprising operational amplifier oP 1 and the operational amplifier 0P2; composed of operational amplifier OP1 of the feedback resistor PtlOOO replaced with an inverting amplifier, to achieve current source output, as the temperature changes PtlOOO guarantee value changes, the output voltage change linearly, the pre-amplifier 0P2 and then inverting the output of op amp amplified output, the output voltage becomes satisfactory; the actual test temperature before first need to zero and full tone, instead of PtlOOO into the circuit with a precision adjustable resistor, its resistance changes ,使其为〇°C时PtlOOO的等效电阻值1000欧,然后调节0P1的输出为〇,然后改变精密可调电阻值,使其为150°C时PtlOOO的等效电阻值1"753.3欧,然后调节0P2的输出为1500mv,完成调零和调满,0P2的输出信号连到CC253〇的一个ADC输入端口,实现AD转换; 无线传感器网络装置包括终端节点和协调器,终端节点用于温度和电流的数据采集, 将电流互感器信号调理电路和温度传感器信号调理电路转换后的电压信号进行AD转换以形成数字检测值;协调器用于将终端节点和协调器建立无线网络。 , It is the equivalent resistance value of the square about 1000 ° C PtlOOO, then adjust the output 0P1 is square, then change the precision adjustable resistance value, it is the equivalent resistance value when PtlOOO 150 ° C 1 "753.3 Europe and then adjusting the output of 1500mV 0P2, complete zero and full adjustment, the output signal 0P2 is connected to an ADC input port CC253〇 achieve AD conversion; wireless sensor network including a terminal device and a coordinator node, a terminal node for a temperature and data acquisition current, the current transformer voltage signal and the temperature sensor signal conditioning circuit converts the signal conditioning circuit performs AD conversion to form a digital detected value; coordinator terminal for establishing a wireless network node and a coordinator.
  2. 2. 如权利要求1所述的配电电力变压器远程监测系统,其特征在于:远程监控装置监控上述电流、温度数字检测值,当其中之一或二者在预定时间内一直处于高于警戒值时,通过移动通信装置发送控制变压器输出的开关和/或变压器降温风扇的开关的命令。 When the warning value is higher than one or both has been in a predetermined time of the current remote monitoring device monitors, digital temperature detection value: power transformer as claimed in distribution of remote monitoring system according to claim 1, characterized in that when the transmission control transformer output through the mobile communication apparatus switch and / or transformer cooling fan switch command.
  3. 3.如权利要求1所述的配电电力变压器远程监测系统,其特征在于:该系统还包括驱动电路,在无线传感器网络装置的控制下驱动降温风扇开关和变压器输出开关。 Power Distribution Transformer remote monitoring system according to claim 1, wherein: the system further includes a drive circuit for driving the cooling fan switch and transformer output switch under the control of the wireless sensor network device.
  4. 4.如权利要求1所述的配电电力变压器远程监测系统,其特征在于:远程监控装置将收到的温度和电流离散值连续化,分别实时绘制成温度曲线和电流曲线,并且将数据存入数据库。 4. The remote monitoring system of the distributed power transformer according to claim 1, wherein: the remote monitoring device and the temperature of the received continuous current discrete values, are plotted in real time temperature curve and current curve, and the data is stored into the database.
  5. 5.如权利要求1所述的配电电力变压器远程监测系统,其特征在于:无线传感器网络装置采用ZIGBEE模块;移动通信装置采用GPRS模块。 5. The distributed power transformers remote monitoring system according to claim 1, wherein: a wireless sensor network apparatus using ZIGBEE module; mobile communication device using GPRS module.
  6. 6.如权利要求1所述的配电电力变压器远程监测系统,其特征在于:远程监控装置包括上位机和微处理器。 Distribution of the power transformer remote monitoring system as claimed in claim 1, wherein: the remote monitoring means comprises a host computer and a microprocessor.
  7. 7.—种采用如权利要求1-6其中之一所述配电电力变压器远程监测系统进行配电电力变压器远程监测的方法,其特征在于包括如下步骤: 电流检测装置检测配电电力变压器的电流并将检测信号发送至无线传感器网络装置, 温度检测装置检测配电电力变压器的温度并将检测信号发送至无线传感器网络装置,无线传感器网络装置将上述电流检测信号和/或温度检测信号转换为数字检测值并通过移动通信装置发送至远程监控装置; 远程监控装置接收移动通信装置发来的上述检测值并通过移动通信装置向无线传感器网络装置发送控制命令,以控制变压器和/或变压器降温风扇的开关。 7.- species in one of the claims 1-6 wherein the distribution as power transformer remote monitoring system of distribution power transformers remote monitoring, comprising the steps of: current detecting means for detecting a power distribution transformer the detection signal is sent to the wireless sensor network apparatus, the temperature detecting means detects a temperature distribution of the power transformer and a sensor detection signal is sent to the wireless network device, a wireless sensor network means the current detection signal and / or the temperature detection signal into a digital detection value and transmitted by the mobile communication device to a remote monitoring apparatus; remote monitoring means receives the detected value of the mobile communication apparatus sent and sends a control command to the wireless sensor network apparatus via a mobile communication apparatus, for controlling the transformer and / or transformer cooling fan switch.
CN 201410648182 2014-11-14 2014-11-14 Power Distribution Transformer remote monitoring system and method CN104460606B (en)

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