Distribution transformer monitoring device
A technology of distribution transformers and monitoring devices, which is applied to measurement devices, electrical devices, instruments, etc., can solve the problems of unbalanced branch loads, affecting the safe and economic operation of distribution networks, and over-temperature burning of distribution transformers. The effect of online monitoring
Inactive Publication Date: 2014-04-09
浙江图盛输变电工程有限公司
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Problems solved by technology
[0002] When the operating temperature and / or temperature rise of the distribution transformer exceeds the limit, it is very easy to cause the distribution transformer to overheat and burn out. Therefore, when the operating temperature and / or temperature rise exceed the limit and other safety hazards, it is necessary to remove the part of the distribution transformer in time. In addition, during the operation of the distribution transformer, if there is a serious imbalance in the loads (that is, branch loads) on each branch circuit of the distribution transformer, it will affect to the safe and economical operation of the distribution network
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Embodiment 1
[0083] Based on Embodiment 1, Embodiment 2 of the present invention discloses yet another distribution transformer monitoring device to realize online monitoring of the operating temperature, temperature rise and branch load distribution of distribution transformers, see image 3 , including: a voltage detection unit 100 , a current detection unit 200 , a temperature detection unit 300 , a sampling chip 400 , a microcontroller 500 and a communication module 600 .
[0084] Specifically, the communication module 600 is connected between the microcontroller 500 and the power distribution terminal, and is used to transmit the processing results of the microcontroller 500 to the power distribution terminal, so as to realize the in-depth application of the intelligent distribution transformer terminal;
[0085] Among them, in view of the characteristics of the isolated RS485 communication module, such as convenient network connection, good anti-interference performance, and long tran...
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The embodiment of the invention discloses a distribution transformer monitoring device. The distribution transformer monitoring device comprises a voltage detecting unit, a current detecting unit, a temperature detecting unit, a sampling chip and a microcontroller. The voltage detecting unit is used for obtaining three-phase voltage analog signals of a distribution transformer through measurement. The current detecting unit is used for obtaining three-phase current analog signals of all branch loops of the distribution transformer through measurement. The temperature detecting unit is used for obtaining running temperature analog signals and environment temperature analog signals of the distribution transformer through measurement. The sampling chip is respectively connected with the temperature detecting unit, the voltage detecting unit and the current detecting unit and is used for processing received analog signals to obtain running temperature digital signals, environment temperature digital signals and distribution network load parameter digital signals of all phase lines of all the branch loops. The microcontroller is connected with the sampling chip and is used for transforming the read digital signals into corresponding actual values to achieve the online monitoring on running temperature, temperature rise conditions and branch load distribution conditions of the distribution transformer.
Description
technical field [0001] The invention relates to the technical field of temperature monitoring and electric load monitoring thereof, and more specifically relates to a distribution transformer monitoring device. Background technique [0002] When the operating temperature and / or temperature rise of the distribution transformer exceeds the limit, it is very easy to cause the distribution transformer to overheat and burn out. Therefore, when the operating temperature and / or temperature rise exceed the limit and other safety hazards, it is necessary to remove the part of the distribution transformer in time. In addition, during the operation of the distribution transformer, if there is a serious imbalance in the loads (that is, branch loads) on each branch circuit of the distribution transformer, it will affect to the safe and economical operation of the distribution network. [0003] Therefore, it is necessary to conduct online monitoring of the distribution transformer's oper...
Claims
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Inventor 叶勤风姜衍欧建有刘若挺黄余林
Owner 浙江图盛输变电工程有限公司