CN105509927A - Substation temperature measurement method and system - Google Patents
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Abstract
Description
技术领域technical field
本发明涉及电力电网监测技术领域，特别是涉及一种变电站测温方法及系统。The invention relates to the technical field of power grid monitoring, in particular to a substation temperature measurement method and system.
背景技术Background technique
随着我国经济的快速发展，对输电网中电力设备的安全运行也提出了更高的要求，而电力设备运行时的温度，尤其是连接点的温度，对电力设备的正常运行有着极为重要的影响，因为变电站中长期运行的变压器、断路器、电抗器、隔离开关、避雷器、进出母线接头、导电母排、高压开关柜等的连接点，往往会因承载电流过大或者表面氧化等原因造成接触电阻值增大，进而引起连接点的温度过高，容易发生高温过热故障，如未及时发现并处理故障，会使绝缘部件的绝缘性能下降，造成安全隐患，甚至造成输电网络的瘫痪。因此，为保证电力设备的安全稳定运行，各大电力公司在设备巡检上都投入了大量的人力和物力，目前主要利用红外温度探测仪或者热成像仪对变电站中的设备的温度进行检测，但是这种检测方法不仅需要动用大量的人员和设备，而且往往存在巡检效率低、实时性差、容易漏检误检等问题，致使无法及时发现设备的温度变化异常，给电力设备的安全稳定运行带来隐患。With the rapid development of my country's economy, higher requirements are put forward for the safe operation of power equipment in the transmission network, and the temperature of power equipment during operation, especially the temperature of the connection point, is extremely important for the normal operation of power equipment. impact, because the connection points of transformers, circuit breakers, reactors, disconnectors, lightning arresters, incoming and outgoing busbar joints, conductive busbars, high-voltage switchgears, etc. in substations for a long time are often caused by excessive carrying current or surface oxidation. The increase of the contact resistance value will cause the temperature of the connection point to be too high, and high temperature overheating faults are prone to occur. If the fault is not found and dealt with in time, the insulation performance of the insulating parts will be reduced, causing safety hazards, and even causing the paralysis of the transmission network. Therefore, in order to ensure the safe and stable operation of power equipment, major power companies have invested a lot of manpower and material resources in equipment inspection. At present, infrared temperature detectors or thermal imagers are mainly used to detect the temperature of equipment in substations. However, this detection method not only requires a large number of personnel and equipment, but also often has problems such as low inspection efficiency, poor real-time performance, and easy missed detection and false detection, which makes it impossible to detect abnormal temperature changes of equipment in time, which greatly affects the safe and stable operation of power equipment. bring hidden dangers.
发明内容Contents of the invention
基于此，有必要针对变电站中设备测温所存在的检测效率低、实时性差、容易漏检误检的问题，提供一种变电站测温方法及系统。Based on this, it is necessary to provide a substation temperature measurement method and system for the problems of low detection efficiency, poor real-time performance, and easy missed detection and false detection in temperature measurement of equipment in substations.
为解决上述技术问题，本发明采取如下的技术方案：In order to solve the problems of the technologies described above, the present invention takes the following technical solutions:
一种变电站测温方法，所述方法包括以下步骤：A method for measuring temperature in a substation, said method comprising the following steps:
利用温度传感器采集变电站中待测设备的温度，得到所述待测设备的温度数据，所述温度传感器设置于所述待测设备上的温度传感节点处；Using a temperature sensor to collect the temperature of the equipment under test in the substation to obtain temperature data of the equipment under test, the temperature sensor is arranged at a temperature sensing node on the equipment under test;
与所述温度传感器连接的射频标签获取所述温度数据，并将所述温度数据发送至阅读装置；A radio frequency tag connected to the temperature sensor acquires the temperature data, and sends the temperature data to a reading device;
所述阅读装置接收所述射频标签发送的温度数据，并通过网络通信将该温度数据上传至数据库服务器。The reading device receives the temperature data sent by the radio frequency tag, and uploads the temperature data to the database server through network communication.
本发明还提供一种变电站测温系统，所述系统包括设置于待测设备上温度传感节点处的温度传感器，与所述温度传感器连接的射频标签，与所述射频标签进行无线通信的阅读装置，The present invention also provides a substation temperature measurement system, the system includes a temperature sensor arranged at the temperature sensing node on the device to be tested, a radio frequency tag connected to the temperature sensor, and a reading device for wireless communication with the radio frequency tag device,
所述温度传感器用于采集变电站中待测设备的温度数据；The temperature sensor is used to collect temperature data of the equipment under test in the substation;
所述射频标签获取所述温度数据，并将所述温度数据发送至阅读装置；The radio frequency tag acquires the temperature data, and sends the temperature data to a reading device;
所述阅读装置用于接收所述射频标签发送的温度数据，并通过网络通信将该温度数据上传至数据库服务器。The reading device is used to receive the temperature data sent by the radio frequency tag, and upload the temperature data to the database server through network communication.
上述变电站测温方法及系统基于射频识别技术，通过温度传感器实时采集待测设备的温度数据，经射频标签和阅读装置之间的无线传输，阅读装置将读取到的温度数据自动上传至数据库服务器，最终实现对待测设备温度的自动、实时监测，因此上述变电站测温方法及系统具有检测效率高、实时性强的特点，能够为设备故障的早期诊断和预警分析提供数据支持，以提高配变电设备预防故障发生的能力。同时，由于每一温度传感器所采集到的温度数据都能通过对应的射频标签发送给阅读装置，继而被上传至数据库服务器，无需人工寻找指定的温度传感器来获取温度数据，因此避免了人为错误而造成的设备漏检、误检等，极大地提高了变电站的智能化管理水平。The above-mentioned substation temperature measurement method and system are based on radio frequency identification technology, and the temperature data of the equipment to be tested is collected in real time through the temperature sensor, and the reading device automatically uploads the read temperature data to the database server through wireless transmission between the radio frequency tag and the reading device , and finally realize the automatic and real-time monitoring of the temperature of the equipment to be tested. Therefore, the above-mentioned substation temperature measurement method and system have the characteristics of high detection efficiency and strong real-time performance, and can provide data support for early diagnosis and early warning analysis of equipment failures to improve distribution transformers. The ability of electrical equipment to prevent failures. At the same time, since the temperature data collected by each temperature sensor can be sent to the reading device through the corresponding radio frequency tag, and then uploaded to the database server, there is no need to manually search for the specified temperature sensor to obtain the temperature data, thus avoiding human errors and The resulting missed detection and false detection of equipment have greatly improved the intelligent management level of the substation.
附图说明Description of drawings
图1为其中一个实施例中变电站测温方法的流程示意图；Fig. 1 is the schematic flow sheet of substation temperature measuring method in one of them embodiment;
图2为其中一个实施例中阅读装置将温度数据上传至数据库服务器的示意图；Fig. 2 is a schematic diagram of reading device uploading temperature data to a database server in one of the embodiments;
图3为其中一个实施例中变电站测温系统的结构示意图。Fig. 3 is a schematic structural diagram of a substation temperature measurement system in one of the embodiments.
具体实施方式detailed description
下面将结合附图及较佳实施例对本发明的技术方案进行详细描述。The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
在其中一个实施例中，参见图1，提供了一种变电站测温方法，该方法包括以下步骤：In one of the embodiments, referring to Fig. 1, a method for measuring temperature in a substation is provided, the method includes the following steps:
S100利用温度传感器采集变电站中待测设备的温度，得到所述待测设备的温度数据，所述温度传感器设置于所述待测设备上的温度传感节点处。S100 uses a temperature sensor to collect the temperature of the equipment under test in the substation to obtain temperature data of the equipment under test, and the temperature sensor is set at a temperature sensing node on the equipment under test.
具体地，在变电站待测设备的温度传感节点处部署用于采集该待测设备的温度传感器，温度传感器测量得到待测设备的温度数据，该温度数据包括待测设备自身的温度以及待测设备所在环境的环境温度等。Specifically, a temperature sensor for collecting the device under test is deployed at the temperature sensor node of the device under test in the substation, and the temperature sensor measures the temperature data of the device under test, which includes the temperature of the device under test itself and the temperature of the device under test. The ambient temperature of the environment where the device is located, etc.
作为一种具体的实施方式，温度传感器为太阳能供电或者感应供电的有源温度传感器。由于有源温度传感器本身具有供电的电源，该电源能够为传感器将温度信号转换为电信号提供必要的能量，因此有源温度传感器更为稳定可靠，测量温度的精度较高，但是对于电池供电的有源温度传感器而言，由于电池具有一定的寿命，需要人工定期更换电池，以保证有源温度传感器的正常工作，因此以电池供电的有源温度传感器自身受到电池寿命等的限制，在本实施方式中，利用太阳能供电或者感应供电的有源温度传感器采集变电站中待测设备的温度，其中太阳能供电的有源温度传感器不仅节省电能，而且更加环保，而感应供电的有源温度传感器属于一种非接触供电的传感器，其以高频辐射的方式向温度传感器提供电能，无需其他连接设备，因此感应供电的有源温度传感器具有移动灵活、不受环境影响等优点，克服电池供电的有源温度传感器存在的缺陷的同时，提高了变电站测温方法的实用性。As a specific implementation, the temperature sensor is an active temperature sensor powered by solar energy or inductively. Since the active temperature sensor itself has a power supply, the power supply can provide the necessary energy for the sensor to convert the temperature signal into an electrical signal, so the active temperature sensor is more stable and reliable, and the accuracy of temperature measurement is higher, but for battery-powered As far as the active temperature sensor is concerned, since the battery has a certain life span, it needs to be manually replaced regularly to ensure the normal operation of the active temperature sensor. Therefore, the battery-powered active temperature sensor itself is limited by the battery life and so on. In the method, the active temperature sensor powered by solar energy or inductive power is used to collect the temperature of the equipment under test in the substation. The active temperature sensor powered by solar energy not only saves power, but also is more environmentally friendly, and the active temperature sensor powered by inductive power is a kind of The non-contact power supply sensor provides power to the temperature sensor in the form of high-frequency radiation without other connecting devices. Therefore, the inductively powered active temperature sensor has the advantages of flexible movement and no environmental influence, and overcomes the active temperature sensor powered by the battery. While eliminating the defects of the sensor, it improves the practicability of the substation temperature measurement method.
S110与所述温度传感器连接的射频标签获取所述温度数据，并将所述温度数据发送至阅读装置。S110 The radio frequency tag connected to the temperature sensor acquires the temperature data, and sends the temperature data to a reading device.
温度传感器与射频标签连接，射频标签读取温度传感器的状态参数，获得对应的待测设备的温度数据后，射频标签通过无线通信将获取到的温度数据发送至阅读装置。具体地，这里射频标签与阅读装置共同构成一个射频识别系统，在该射频识别系统中，当射频标签处于阅读装置的工作范围内时，即射频标签进入阅读装置产生的电磁场时，射频标签通过天线接收阅读装置发出的射频信号，并依靠感应电流所提供的能量将温度数据从天线发出。在本实施例中，射频标签(即被动式标签)可以为无源射频标签或者有源射频标签，其中无源射频标签的使用寿命更长，而与无源射频标签相比，对于有源射频标签(即主动式标签)而言，由于有源射频标签本身具有用于供应内部集成电路运行所需能量的电源，因此有源射频标签不仅具有更长的读取距离和较大的内存容量，而且可以依靠内部电源随时主动向读取装置发送内存资料数据，此外有源射频标签还具有识别稳定性较高、读取速度较快的特点。The temperature sensor is connected to the radio frequency tag, and the radio frequency tag reads the state parameters of the temperature sensor, and after obtaining the temperature data of the corresponding device to be tested, the radio frequency tag sends the obtained temperature data to the reading device through wireless communication. Specifically, the radio frequency tag and the reading device together constitute a radio frequency identification system. In the radio frequency identification system, when the radio frequency tag is within the working range of the reading device, that is, when the radio frequency tag enters the electromagnetic field generated by the reading device, the radio frequency tag passes through the antenna Receive the radio frequency signal sent by the reading device, and rely on the energy provided by the induced current to send the temperature data from the antenna. In this embodiment, the radio frequency tag (that is, the passive type tag) can be a passive radio frequency tag or an active radio frequency tag, wherein the service life of the passive radio frequency tag is longer, and compared with the passive radio frequency tag, for the active radio frequency tag (that is, active tags), since the active radio frequency tag itself has a power supply for supplying the energy required for the operation of the internal integrated circuit, the active radio frequency tag not only has a longer reading distance and a larger memory capacity, but also It can rely on the internal power supply to actively send memory data to the reading device at any time. In addition, the active radio frequency tag also has the characteristics of high recognition stability and fast reading speed.
作为一种具体的实施方式，阅读装置接收两个以上的射频标签分别发送的温度数据。在本实施方式中，如果多个射频标签均处于同一个阅读装置的工作范围内，那么各个射频标签向阅读装置发送不同的载波信号，阅读装置可以分别接收或者同时接收各个射频标签所发射的载波信号，经过阅读装置内的读写模块译码处理后，再通过射频模块将各个载波信号对应的温度数据发送至数据库服务器。As a specific implementation manner, the reading device receives temperature data respectively sent by two or more radio frequency tags. In this embodiment, if a plurality of radio frequency tags are within the working range of the same reading device, each radio frequency tag sends a different carrier signal to the reading device, and the reading device can receive respectively or simultaneously receive the carrier waves transmitted by each radio frequency tag After the signal is decoded and processed by the reading and writing module in the reading device, the temperature data corresponding to each carrier signal is sent to the database server through the radio frequency module.
S120所述阅读装置接收所述射频标签发送的温度数据，并通过网络通信将该温度数据上传至数据库服务器。S120, the reading device receives the temperature data sent by the radio frequency tag, and uploads the temperature data to the database server through network communication.
阅读装置通过内置的天线接收射频标签发送的温度数据后，经读写模块译码处理，通过射频模块将温度数据发出，发出的温度数据经网络中继节点转发和信号路由器发送至网络服务器，最终保存到数据库服务器中，如图2所示。阅读装置与数据库服务器之间的通信可以为GPRS无线通信或者USB接口有线通信等。After the reading device receives the temperature data sent by the radio frequency tag through the built-in antenna, it is decoded and processed by the reading and writing module, and the temperature data is sent out through the radio frequency module. The sent temperature data is forwarded by the network relay node and sent to the network server by the signal router, and finally Save to the database server, as shown in Figure 2. The communication between the reading device and the database server may be GPRS wireless communication or USB interface wired communication.
本实施例所提出的变电站测温方法基于射频识别技术，通过温度传感器实时采集待测设备的温度数据，经射频标签和阅读装置之间的无线传输，阅读装置将读取到的温度数据自动上传至数据库服务器，最终实现对待测设备温度的自动、实时监测，因此上述变电站测温方法具有检测效率高、实时性强的特点，能够为设备故障的早期诊断和预警分析提供数据支持，以提高配变电设备预防故障发生的能力。同时，由于每一温度传感器所采集到的温度数据都能通过对应的射频标签发送给阅读装置，继而被上传至数据库服务器，无需人工寻找指定的温度传感器来获取温度数据，因此避免了人为错误而造成的设备漏检、误检等，极大地提高了变电站的智能化管理水平。The substation temperature measurement method proposed in this embodiment is based on radio frequency identification technology. The temperature data of the equipment to be tested is collected in real time through the temperature sensor, and the reading device automatically uploads the read temperature data through wireless transmission between the radio frequency tag and the reading device. to the database server, and finally realize the automatic and real-time monitoring of the temperature of the equipment to be tested. Therefore, the above-mentioned substation temperature measurement method has the characteristics of high detection efficiency and strong real-time performance, and can provide data support for early diagnosis and early warning analysis of equipment failures, so as to improve distribution The ability of substation equipment to prevent failures. At the same time, since the temperature data collected by each temperature sensor can be sent to the reading device through the corresponding radio frequency tag, and then uploaded to the database server, there is no need to manually search for the specified temperature sensor to obtain the temperature data, thus avoiding human errors and The resulting missed detection and false detection of equipment have greatly improved the intelligent management level of the substation.
作为一种具体的实施方式，所述数据库服务器根据用户指令设置所述温度传感器的告警温度、所述温度传感器的采样频率和所述射频标签的发送频率。数据库服务器是运行在局域网中的由一台或者多台计算机和数据库管理系统软件共同构成的单独用于数据库管理的专门服务器，数据库服务器你为用户应用提供服务，包括查询、更新、事务管理、索引、高速缓存、查询优化、安全及多用户存取控制等。在本实施方式中，数据库服务器可以根据用户指令通过阅读装置设置温度传感器的告警温度，这里的温度传感器集成有相应的告警电路，告警电路将温度传感器所采集的待测设备的温度与告警温度进行比较，当温度传感器所采集的温度高于告警温度时，集成告警电路的温度传感器会发出告警或者向射频标签发送告警信息，同时，数据库服务器根据用户指令设置温度传感器的采样频率以及其向射频标签发送温度数据的发送频率，用户可以结合不同待测设备的温度变化的具体情况灵活设置温度传感器的采样频率和发送频率，满足对待测设备温度监测的同时，提高监测效率。As a specific implementation manner, the database server sets the alarm temperature of the temperature sensor, the sampling frequency of the temperature sensor, and the sending frequency of the radio frequency tag according to user instructions. A database server is a dedicated server for database management that is composed of one or more computers and database management system software running on a local area network. The database server provides services for user applications, including query, update, transaction management, and indexing. , cache, query optimization, security and multi-user access control. In this embodiment, the database server can set the alarm temperature of the temperature sensor through the reading device according to the user's instruction. The temperature sensor here is integrated with a corresponding alarm circuit, and the alarm circuit compares the temperature of the device under test collected by the temperature sensor with the alarm temperature. In comparison, when the temperature collected by the temperature sensor is higher than the warning temperature, the temperature sensor of the integrated warning circuit will issue an warning or send warning information to the radio frequency tag. The sending frequency of sending temperature data, the user can flexibly set the sampling frequency and sending frequency of the temperature sensor according to the specific conditions of the temperature change of different devices under test, so as to meet the temperature monitoring of the device under test and improve the monitoring efficiency.
作为一种具体的实施方式，阅读装置按照预设时间周期将接收到的温度数据上传至数据库服务器。阅读装置通过内置的天线接收射频标签发送的温度数据后，经读写模块译码处理，通过射频模块和网络通信将温度数据发送至数据库服务器中，阅读装置可以将接收到的温度数据通过网络通信实时发送给数据库服务器，数据库服务器对阅读装置发送的温度数据进行处理和存储，同时阅读装置可以按照一定的预设时间周期，例如预设时间周期为10秒钟，阅读装置每隔10秒钟将接收到的温度数据发送给数据库服务器，数据库服务器接收阅读装置周期性上传的温度数据并对其进行处理和存储，因此通过对预设时间周期的设定，在提高对变电站中待测设备温度监测的实时性的同时，有利于节省数据库服务器的存储空间。As a specific implementation manner, the reading device uploads the received temperature data to the database server according to a preset time period. After the reading device receives the temperature data sent by the radio frequency tag through the built-in antenna, it is decoded by the reading and writing module, and the temperature data is sent to the database server through the radio frequency module and network communication, and the reading device can communicate the received temperature data through the network Send it to the database server in real time, and the database server processes and stores the temperature data sent by the reading device. At the same time, the reading device can follow a certain preset time period. For example, the preset time period is 10 seconds. The received temperature data is sent to the database server, and the database server receives the temperature data periodically uploaded by the reading device and processes and stores it. Therefore, by setting the preset time period, the temperature monitoring of the equipment under test in the substation can be improved. At the same time, it is beneficial to save the storage space of the database server.
相应地，本发明还提出一种变电站测温系统，参见图3，该系统包括设置于待测设备300上温度传感节点处的温度传感器310，与温度传感器310连接的射频标签320，与射频标签320进行无线通信的阅读装置330，Correspondingly, the present invention also proposes a substation temperature measurement system, as shown in FIG. tag 320 for wireless communication reading device 330,
温度传感器310用于采集变电站中待测设备300的温度数据；The temperature sensor 310 is used to collect the temperature data of the equipment under test 300 in the substation;
射频标签320获取温度数据，并将温度数据发送至阅读装置330；The radio frequency tag 320 acquires temperature data, and sends the temperature data to the reading device 330;
阅读装置330用于接收射频标签320发送的温度数据，并通过网络通信将该温度数据上传至数据库服务器340。The reading device 330 is used for receiving the temperature data sent by the radio frequency tag 320 , and uploading the temperature data to the database server 340 through network communication.
本实施例具体包括如下内容：This embodiment specifically includes the following contents:
在变电站待测设备300的温度传感节点处部署用于采集该待测设备300的温度传感器310，温度传感器310测量得到待测设备300的温度数据，该温度数据包括待测设备300自身的温度以及待测设备300所在环境的环境温度等；The temperature sensor 310 used to collect the device under test 300 is deployed at the temperature sensing node of the device under test 300 in the substation, and the temperature sensor 310 measures the temperature data of the device under test 300, which includes the temperature of the device under test 300 itself and the ambient temperature of the environment where the device under test 300 is located;
温度传感器310与射频标签320连接，射频标签320读取温度传感器310的状态参数，获得对应的待测设备300的温度数据后，射频标签320通过无线通信将获取到的温度数据发送至阅读装置330，这里射频标签320与阅读装置330共同构成一个射频识别系统，在该射频识别系统中，当射频标签320处于阅读装置330的工作范围内时，即射频标签320进入阅读装置330产生的电磁场时，射频标签320通过天线接收阅读装置330发出的射频信号，并依靠感应电流所提供的能量将温度数据从天线发出；这里射频标签320(即被动式标签)可以为无源射频标签或者有源射频标签，其中无源射频标签的使用寿命更长，而与无源射频标签相比，对于有源射频标签(即主动式标签)而言，由于有源射频标签本身具有用于供应内部集成电路运行所需能量的电源，因此有源射频标签不仅具有更长的读取距离和较大的内存容量，而且可以依靠内部电源随时主动向读取装置发送内存资料数据，此外有源射频标签还具有识别稳定性较高、读取速度较快的特点；The temperature sensor 310 is connected to the radio frequency tag 320, and the radio frequency tag 320 reads the state parameter of the temperature sensor 310, and after obtaining the temperature data of the corresponding device under test 300, the radio frequency tag 320 sends the obtained temperature data to the reading device 330 through wireless communication , where the radio frequency tag 320 and the reading device 330 jointly constitute a radio frequency identification system, in this radio frequency identification system, when the radio frequency tag 320 is within the working range of the reading device 330, that is, when the radio frequency tag 320 enters the electromagnetic field generated by the reading device 330, The radio frequency tag 320 receives the radio frequency signal sent by the reading device 330 through the antenna, and relies on the energy provided by the induced current to send temperature data from the antenna; here the radio frequency tag 320 (i.e., a passive tag) can be a passive radio frequency tag or an active radio frequency tag, Among them, the service life of the passive radio frequency tag is longer, and compared with the passive radio frequency tag, for the active radio frequency tag (that is, the active tag), since the active radio frequency tag itself has the power required for supplying the operation of the internal integrated circuit Energy power supply, so the active radio frequency tag not only has a longer reading distance and a larger memory capacity, but also can actively send memory data to the reading device at any time by relying on the internal power supply. In addition, the active radio frequency tag also has recognition stability Higher, faster reading speed;
阅读装置330通过内置的天线接收射频标签320发送的温度数据后，经读写模块译码处理，通过射频模块将温度数据发出，发出的温度数据经网络中继节点转发和信号路由器发送至网络服务器，最终保存到数据库服务器340中，如图3所示。阅读装置330与数据库服务器240之间的通信可以为GPRS无线通信或者USB接口有线通信等。After the reading device 330 receives the temperature data sent by the radio frequency tag 320 through the built-in antenna, it is decoded and processed by the reading and writing module, and the temperature data is sent out through the radio frequency module, and the sent temperature data is forwarded by the network relay node and sent to the network server by the signal router , and finally saved to the database server 340, as shown in FIG. 3 . The communication between the reading device 330 and the database server 240 may be GPRS wireless communication or USB interface wired communication.
本实施例所提出的变电站测温系统基于射频识别技术，通过温度传感器实时采集待测设备的温度数据，经射频标签和阅读装置之间的无线传输，阅读装置将读取到的温度数据自动上传至数据库服务器，最终实现对待测设备温度的自动、实时监测，因此上述变电站测温系统具有检测效率高、实时性强的特点，能够为设备故障的早期诊断和预警分析提供数据支持，以提高配变电设备预防故障发生的能力。同时，由于每一温度传感器所采集到的温度数据都能通过对应的射频标签发送给阅读装置，继而被上传至数据库服务器，无需人工寻找指定的温度传感器来获取温度数据，因此避免了人为错误而造成的设备漏检、误检等，极大地提高了变电站的智能化管理水平。The substation temperature measurement system proposed in this embodiment is based on radio frequency identification technology. The temperature data of the equipment to be tested is collected in real time through the temperature sensor. Through wireless transmission between the radio frequency tag and the reading device, the reading device automatically uploads the read temperature data. to the database server, and finally realize the automatic and real-time monitoring of the temperature of the equipment to be tested. Therefore, the above-mentioned substation temperature measurement system has the characteristics of high detection efficiency and strong real-time performance, and can provide data support for early diagnosis and early warning analysis of equipment failures, so as to improve distribution The ability of substation equipment to prevent failures. At the same time, since the temperature data collected by each temperature sensor can be sent to the reading device through the corresponding radio frequency tag, and then uploaded to the database server, there is no need to manually search for the specified temperature sensor to obtain the temperature data, thus avoiding human errors and The resulting missed detection and false detection of equipment have greatly improved the intelligent management level of the substation.
作为一种具体的实施方式，所述数据库服务器根据用户指令设置所述温度传感器的告警温度、所述温度传感器的采样频率和所述射频标签的发送频率。数据库服务器是运行在局域网中的由一台或者多台计算机和数据库管理系统软件共同构成的单独用于数据库管理的专门服务器，数据库服务器你为用户应用提供服务，包括查询、更新、事务管理、索引、高速缓存、查询优化、安全及多用户存取控制等。在本实施方式中，数据库服务器可以根据用户指令通过阅读装置设置温度传感器的告警温度，这里的温度传感器集成有相应的告警电路，告警电路将温度传感器所采集的待测设备的温度与告警温度进行比较，当温度传感器所采集的温度高于告警温度时，集成告警电路的温度传感器会发出告警或者向射频标签发送告警信息，同时，数据库服务器根据用户指令设置温度传感器的采样频率以及向射频标签发送温度数据的发送频率，用户可以结合不同待测设备的温度变化的具体情况灵活设置温度传感器的采样频率和发送频率，满足对待测设备温度监测的同时，提高监测效率。As a specific implementation manner, the database server sets the alarm temperature of the temperature sensor, the sampling frequency of the temperature sensor, and the sending frequency of the radio frequency tag according to user instructions. A database server is a dedicated server for database management that is composed of one or more computers and database management system software running on a local area network. The database server provides services for user applications, including query, update, transaction management, and indexing. , cache, query optimization, security and multi-user access control. In this embodiment, the database server can set the alarm temperature of the temperature sensor through the reading device according to the user's instruction. The temperature sensor here is integrated with a corresponding alarm circuit, and the alarm circuit compares the temperature of the device under test collected by the temperature sensor with the alarm temperature. In comparison, when the temperature collected by the temperature sensor is higher than the alarm temperature, the temperature sensor of the integrated alarm circuit will issue an alarm or send an alarm message to the radio frequency tag. For the sending frequency of temperature data, the user can flexibly set the sampling frequency and sending frequency of the temperature sensor according to the specific conditions of the temperature changes of different devices under test, so as to meet the temperature monitoring of the device under test and improve the monitoring efficiency.
作为一种具体的实施方式，阅读装置与两个以上的射频标签进行无线通信，接收各个射频标签分别发送的温度数据。在本实施方式中，如果多个射频标签均处于同一个阅读装置的工作范围内，那么各个射频标签向阅读装置发送不同的载波信号，阅读装置可以分别接收或者同时接收各个射频标签所发射的载波信号，经过阅读装置内的读写模块译码处理后，再通过射频模块将各个载波信号对应的温度数据发送至数据库服务器。As a specific implementation, the reading device communicates wirelessly with more than two radio frequency tags, and receives temperature data sent by each radio frequency tag. In this embodiment, if a plurality of radio frequency tags are within the working range of the same reading device, each radio frequency tag sends a different carrier signal to the reading device, and the reading device can receive respectively or simultaneously receive the carrier waves transmitted by each radio frequency tag After the signal is decoded and processed by the reading and writing module in the reading device, the temperature data corresponding to each carrier signal is sent to the database server through the radio frequency module.
作为一种具体的实施方式，阅读装置按照预设时间周期将接收到的温度数据上传至数据库服务器。阅读装置通过内置的天线接收射频标签发送的温度数据后，经读写模块译码处理，通过射频模块和网络通信将温度数据发送至数据库服务器中，阅读装置可以将接收到的温度数据通过网络通信实时发送给数据库服务器，数据库服务器对阅读装置发送的温度数据进行处理和存储，同时阅读装置可以按照一定的预设时间周期，例如预设时间周期为10秒钟，阅读装置每隔10秒钟将接收到的温度数据发送给数据库服务器，数据库服务器接收阅读装置周期性上传的温度数据并对其进行处理和存储，因此通过对预设时间周期的设定，在提高对变电站中待测设备温度监测的实时性的同时，有利于节省数据库服务器的存储空间。As a specific implementation manner, the reading device uploads the received temperature data to the database server according to a preset time period. After the reading device receives the temperature data sent by the radio frequency tag through the built-in antenna, it is decoded by the reading and writing module, and the temperature data is sent to the database server through the radio frequency module and network communication, and the reading device can communicate the received temperature data through the network Send it to the database server in real time, and the database server processes and stores the temperature data sent by the reading device. At the same time, the reading device can follow a certain preset time period. For example, the preset time period is 10 seconds. The received temperature data is sent to the database server, and the database server receives the temperature data periodically uploaded by the reading device and processes and stores it. Therefore, by setting the preset time period, the temperature monitoring of the equipment under test in the substation can be improved. At the same time, it is beneficial to save the storage space of the database server.
作为一种具体的实施方式，温度传感器为太阳能供电或者感应供电的有源温度传感器。由于有源温度传感器本身具有供电的电源，该电源能够为传感器将温度信号转换为电信号提供必要的能量，因此有源温度传感器更为稳定可靠，测量温度的精度较高，但是对于电池供电的有源温度传感器而言，由于电池具有一定的寿命，需要人工定期更换电池，以保证有源温度传感器的正常工作，因此以电池供电的有源温度传感器自身受到电池寿命等的限制，在本实施方式中，利用太阳能供电或者感应供电的有源温度传感器采集变电站中待测设备的温度，其中太阳能供电的有源温度传感器不仅节省电能，而且更加环保，而感应供电的有源温度传感器属于一种非接触供电的传感器，其以高频辐射的方式向温度传感器提供电能，无需其他连接设备，因此感应供电的有源温度传感器具有移动灵活、不受环境影响等优点，克服电池供电的有源温度传感器存在的缺陷的同时，提高了变电站测温系统的实用性。As a specific implementation, the temperature sensor is an active temperature sensor powered by solar energy or inductively. Since the active temperature sensor itself has a power supply, the power supply can provide the necessary energy for the sensor to convert the temperature signal into an electrical signal, so the active temperature sensor is more stable and reliable, and the accuracy of temperature measurement is higher, but for battery-powered As far as the active temperature sensor is concerned, since the battery has a certain life span, it needs to be manually replaced regularly to ensure the normal operation of the active temperature sensor. Therefore, the battery-powered active temperature sensor itself is limited by the battery life and so on. In the method, the active temperature sensor powered by solar energy or inductive power is used to collect the temperature of the equipment under test in the substation. The active temperature sensor powered by solar energy not only saves power, but also is more environmentally friendly, and the active temperature sensor powered by inductive power is a kind of The non-contact power supply sensor provides power to the temperature sensor in the form of high-frequency radiation without other connecting devices. Therefore, the inductively powered active temperature sensor has the advantages of flexible movement and no environmental influence, and overcomes the active temperature sensor powered by the battery. While eliminating the defects of the sensor, it improves the practicability of the substation temperature measurement system.
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The various technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of concise description, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.
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