CN104202191A - Switching method of communication working modes of fault indicator remote transmission communication terminal and master station - Google Patents
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Abstract
本发明公开了一种故障指示器远传通信终端与主站通信工作模式的切换方法，通过对故障指示器远传通信终端内部电池/电容电压进行监测，实现故障指示器远传通信终端通信工作模式的自动切换。在此基础上，发明人根据故障指示器实际情况和相关技术要求，发明人构建了一套完整、高效的故障指示器远传通信终端上线工作模式。与现实时在线模式相比，应用本发明的上线工作模式简单而实用，尤其对于故障指示器通信终端取电方式不稳定的情况(如太阳能取电或CT取电)，在不改变现有取电方式的条件下，能实现故障指示器远传通信终端长期稳定可靠的工作。
The invention discloses a method for switching the communication working mode between a remote transmission communication terminal of a fault indicator and a main station. By monitoring the internal battery/capacitor voltage of the remote transmission communication terminal of the fault indicator, the communication work of the remote transmission communication terminal of the fault indicator is realized. Automatic mode switching. On this basis, according to the actual situation of the fault indicator and related technical requirements, the inventor has constructed a complete and efficient online working mode of the remote transmission communication terminal of the fault indicator. Compared with the real-time online mode, the application of the online working mode of the present invention is simple and practical, especially for the situation where the fault indicator communication terminal takes power in an unstable way (such as solar power or CT power), without changing the existing power supply. Under the condition of electrical mode, it can realize the long-term stable and reliable work of the remote transmission communication terminal of the fault indicator.
Description
技术领域technical field
本发明属于电力配电自动化系统技术领域，尤其涉及一种故障指示器远传通信终端与主站通信工作模式的切换方法。The invention belongs to the technical field of electric power distribution automation systems, and in particular relates to a method for switching communication working modes between a fault indicator remote transmission communication terminal and a master station.
背景技术Background technique
故障指示器远传通信终端尤其是采用太阳能取电的架空线型和采用CT取电的电缆线型的故障指示器远传通信终端，当持续阴雨天，太阳能取电装置无法正常取电或配电线路一次电流较小时，取电CT无法正常工作，将导致故障指示器远传通信终端无法正常工作。如果此时线路发生故障，故障信号将无法上送至配电主站，故障指示器将发挥不了它应有的作用。因此，在不改变现有取电方式的条件下，有必要对原有的故障指示器远传通信终端的上线工作模式进行改进。Fault indicator remote transmission communication terminal, especially the fault indicator remote transmission communication terminal of the overhead line type that uses solar power to take power and the cable line type that uses CT to take power. When the primary current of the power line is small, the power-taking CT cannot work normally, which will cause the remote communication terminal of the fault indicator to fail to work normally. If the line fails at this time, the fault signal will not be sent to the power distribution master station, and the fault indicator will not be able to play its due role. Therefore, it is necessary to improve the on-line working mode of the original fault indicator remote transmission communication terminal without changing the existing power-taking method.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种简单、实用、可靠的故障指示器远传通信终端与主站通信工作模式的切换方法，在不改变现有取电方式的条件下，实现故障指示器远传通信终端长期稳定的工作。The technical problem to be solved by the present invention is to provide a simple, practical and reliable fault indicator remote transmission communication terminal and master station communication working mode switching method, and realize the fault indicator without changing the existing power-taking mode. Far EasTone communication terminals work stably for a long time.
为解决上述技术问题，本发明采用以下技术方案：故障指示器远传通信终端与主站通信工作模式的切换方法，通过测量故障指示器远传终端直流电源系统中电池/电容两端的电压，将电压与设定限值进行比较，根据比较结果在实时通信模式与非实时通信模式之间进行切换。In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: the switching method of the fault indicator remote transmission communication terminal and the main station communication mode, by measuring the voltage at both ends of the battery/capacitor in the fault indicator remote transmission terminal DC power supply system, the The voltage is compared with a set limit value, and switching between real-time communication mode and non-real-time communication mode is performed according to the comparison result.
上述比较按照以下判断逻辑进行：The above comparison is carried out according to the following judgment logic:
<a>由实时在线模式切换为非实时在线模式的判断逻辑：当故障指示器远传通信终端直流电源两端的电压在规定的时间内持续低于预先设置的阀值时，故障指示器远传通信终端由实时通信模式切换为非实时上线模式；<a> Judgment logic for switching from real-time online mode to non-real-time online mode: When the voltage at both ends of the DC power supply of the fault indicator remote transmission communication terminal continues to be lower than the preset threshold within the specified time, the fault indicator remote transmission The communication terminal switches from the real-time communication mode to the non-real-time online mode;
<b>由非实时在线模式切换为实时在线模式的判断逻辑：当故障指示器远传通信终端直流电源两端的电压在规定的时间内持续大于或等于预先设置的阀值时，故障指示器远传通信终端由非实时通信模式切换为实时上线模式。<b> Judgment logic for switching from non-real-time online mode to real-time online mode: When the voltage at both ends of the DC power supply of the remote transmission communication terminal of the fault indicator continues to be greater than or equal to the preset threshold within the specified time, the fault indicator is far away The communication terminal switches from non-real-time communication mode to real-time online mode.
上述非实时通信模式为：The above non-real-time communication modes are:
<a>在实际线路无故障和通信设备无突发量信息时，故障指示器远传通信终端在与主站系统预先设定的时刻，主动上线，与主站进行通信，交换线路及设备相关信息后，通信模块处于休眠状态，等待下一个预设时刻上线或故障发生时，主动上线(定点上线的工作方式)；<a> When the actual line has no faults and the communication equipment has no burst information, the fault indicator remote transmission communication terminal will actively go online at the time preset with the main station system, communicate with the main station, and exchange lines and equipment related After receiving the message, the communication module is in a dormant state, waiting for the next preset time to go online or when a fault occurs, it will take the initiative to go online (the working method of fixed-point online);
<b>在实际线路和通信设备有故障或突发量信息产生时，故障指示器远传通信终端主动上线，与主站进行通信，主动上传完故障或突发量信息后，通信模块处于休眠状态，等待下一个预设时刻上线或故障发生时，主动上线。<b>When the actual line and communication equipment are faulty or burst information is generated, the remote transmission communication terminal of the fault indicator will actively go online and communicate with the master station. After actively uploading the fault or burst information, the communication module will be dormant state, wait for the next preset time to go online or when a fault occurs, take the initiative to go online.
针对目前故障指示器远传通信终端及其工作模式存在的问题，发明人建立了一种故障指示器远传通信终端与主站通信工作模式的切换方法，通过对故障指示器远传通信终端内部电池/电容电压进行监测，实现故障指示器远传通信终端通信工作模式的自动切换，主要：在现有的故障指示器远传终端直流电源系统中，加入一个测量单元，用于测量电池/电容两端的电压；当电压低于设定的限值时，故障指示器远传通信终端由现有的实时通信模式切换至非实时通信模式(即：在故障发生时，唤醒通信终端的通信模块，和主站系统连接上后，主动将故障信息上送至主站系统；平时没有故障时，为预先设定的时刻，主动上线，与主站通信后，通信模块处于休眠状态，等待下一个预设时刻上线或故障发生时，主动上线)；并根据故障指示器实际情况和相关技术要求，发明人构建了一套完整、高效的故障指示器远传通信终端上线工作模式。与现实时在线模式相比，应用本发明的上线工作模式简单而实用，尤其对于故障指示器通信终端取电方式不稳定的情况(如太阳能取电或CT取电)，在不改变现有取电方式的条件下，能实现故障指示器远传通信终端长期稳定可靠的工作。Aiming at the problems existing in the fault indicator remote communication terminal and its working mode, the inventor has established a method for switching the communication working mode between the fault indicator remote communication terminal and the main station. The voltage of the battery/capacitor is monitored to realize the automatic switching of the communication mode of the fault indicator remote communication terminal. Mainly: add a measurement unit to the existing DC power supply system of the fault indicator remote transmission terminal to measure the battery/capacitance The voltage at both ends; when the voltage is lower than the set limit value, the remote transmission communication terminal of the fault indicator switches from the existing real-time communication mode to the non-real-time communication mode (that is, when a fault occurs, wake up the communication module of the communication terminal, After connecting with the master station system, it will actively send the fault information to the master station system; when there is no fault at ordinary times, it will go online at the preset time. After communicating with the master station, the communication module will be in a dormant state, waiting for the next preset time. Set time to go online or when a fault occurs, take the initiative to go online); and according to the actual situation of the fault indicator and related technical requirements, the inventor has constructed a complete and efficient fault indicator remote transmission communication terminal online working mode. Compared with the real-time online mode, the on-line working mode of the present invention is simple and practical, especially for the situation where the power-taking mode of the fault indicator communication terminal is unstable (such as solar power or CT power-taking), without changing the existing power-taking mode. Under the condition of electrical mode, it can realize the long-term stable and reliable work of the remote transmission communication terminal of the fault indicator.
附图说明Description of drawings
图1是故障指示器远传通信终端与主站通信工作原理图。Figure 1 is a diagram of the working principle of communication between the fault indicator remote transmission communication terminal and the master station.
具体实施方式Detailed ways
图1显示了故障指示器远传通信终端与主站通信工作原理，本实施方式是基于35kV以下配电线路故障指示器远传通信终端取电方式不变的情况下，通过应用本发明改变远传通信终端无线通信模块的工作方式，达到减少终端功率消耗的目的。具体如下：Figure 1 shows the working principle of communication between the remote transmission communication terminal of the fault indicator and the main station. The working mode of the wireless communication module of the communication terminal is adopted to achieve the purpose of reducing the power consumption of the terminal. details as follows:
故障指示器远传通信终端的主处理单元通过无线射频模块与故障传感器的内部通信周期和机理不改变。在故障指示器远传通信终端的各个模块中，通过测试发现与主站系统通信的无线通信模块的功耗占整个通信终端功耗的很大一部分(占40％以上)。而用于故障指示器远传通信终端与主站系统通信的DL/T634.5101-2002协议支持平衡式，即支持故障指示器通信终端在特定的情况下(线路发生故障或有突发信息等)主动与主站通信。据此，发明人设计了一种与现有的故障指示器远传通信终端与主站实时通信模式不同的通信方式，即非实时通信模式：<a>在实际线路无故障和通信设备无突发量信息时，故障指示器远传通信终端在与主站系统预先设定的时刻，主动上线，与主站进行通信，交换线路及设备相关信息后，通信模块处于休眠状态，等待下一个预设时刻上线或故障发生时，主动上线；<b>在实际线路和通信设备有故障或突发量信息产生时，故障指示器远传通信终端主动上线，与主站进行通信，主动上传完故障或突发量信息后，通信模块处于休眠状态，等待下一个预设时刻上线或故障发生时，主动上线。The internal communication cycle and mechanism of the main processing unit of the remote transmission communication terminal of the fault indicator and the fault sensor through the radio frequency module remain unchanged. Among the various modules of the fault indicator remote communication terminal, it is found through testing that the power consumption of the wireless communication module communicating with the main station system accounts for a large part of the power consumption of the entire communication terminal (accounting for more than 40%). The DL/T634.5101-2002 protocol used for the communication between the fault indicator remote communication terminal and the main station system supports the balanced type, that is, it supports the fault indicator communication terminal under specific circumstances (line failure or burst information, etc.) ) Actively communicate with the master station. Accordingly, the inventor designed a communication mode different from the existing real-time communication mode between the remote transmission communication terminal of the fault indicator and the main station, that is, the non-real-time communication mode: <a> no fault in the actual line and no outage of the communication equipment When sending volume information, the remote transmission communication terminal of the fault indicator will actively go online at the preset time with the master station system, communicate with the master station, exchange line and equipment related information, and the communication module will be in a dormant state, waiting for the next preset time. Set the time to go online or take the initiative to go online when a fault occurs;<b>When the actual line and communication equipment have a fault or a sudden amount of information is generated, the fault indicator remote communication terminal actively goes online, communicates with the master station, and actively uploads the fault or burst information, the communication module is in a dormant state, waiting for the next preset time to go online or when a fault occurs, it will take the initiative to go online.
同时，发明人设计了一种故障指示器远传通信终端与主站通信工作模式的切换方法，在现有的故障指示器远传通信终端电源系统，加入一个测量单元，用于测量电池/电容两端的电压U；通过测量故障指示器远传终端直流电源系统中电池/电容两端的电压，将电压与设定限值进行比较，根据比较结果在实时通信模式与非实时通信模式之间进行切换。其中，比较按照以下判断逻辑进行：At the same time, the inventor designed a method for switching the communication mode between the remote transmission communication terminal of the fault indicator and the main station, adding a measurement unit to the existing power supply system of the remote transmission communication terminal of the fault indicator to measure the battery/capacitance The voltage U at both ends; by measuring the voltage at both ends of the battery/capacitor in the DC power supply system of the fault indicator remote transmission terminal, compare the voltage with the set limit value, and switch between real-time communication mode and non-real-time communication mode according to the comparison result . Among them, the comparison is performed according to the following judgment logic:
<a>由实时在线模式切换为非实时在线模式的判断逻辑：当故障指示器远传通信终端直流电源两端的电压U在规定的时间T内持续低于预先设置的阀值U0时，故障指示器远传通信终端由实时通信模式切换为非实时上线模式；<a> Judgment logic for switching from real-time online mode to non-real-time online mode: When the voltage U across the DC power supply of the remote communication terminal of the fault indicator continues to be lower than the preset threshold U0 within the specified time T, the fault indication The remote transmission communication terminal of the device is switched from the real-time communication mode to the non-real-time online mode;
<b>由非实时在线模式切换为实时在线模式的判断逻辑：当故障指示器远传通信终端直流电源两端的电压U在规定的时间T内持续大于或等于预先设置的阀值U0时，故障指示器远传通信终端由非实时通信模式切换为实时上线模式。<b> Judgment logic for switching from non-real-time online mode to real-time online mode: When the voltage U across the DC power supply of the remote communication terminal of the fault indicator continues to be greater than or equal to the preset threshold U0 within the specified time T, the fault occurs The indicator remote communication terminal is switched from non-real-time communication mode to real-time online mode.
在本实施方式中，T取5-10s，U0＝0.95U，U为电池/电容的额定电压。通过测试发现，当配电线路发生故障时，非实时通信工作模式上送故障信息比采用实时通信工作模式的上送故障信息时间慢45s左右，这在配电线路故障处理中时完全可以接受的。运用这种通信的工作模式，可以在取电条件不稳定的情况下，极大延长了通信的时间，使故障指示器能更长时间的稳定工作，充分发挥它的作用。In this embodiment, T is 5-10s, U0=0.95U, and U is the rated voltage of the battery/capacitor. Through the test, it is found that when the distribution line fails, the non-real-time communication working mode sends the fault information about 45s slower than the real-time communication working mode, which is completely acceptable in the distribution line fault handling . Using this communication working mode can greatly prolong the communication time when the power-taking condition is unstable, so that the fault indicator can work stably for a longer time and give full play to its function.
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Application publication date: 20141210 |