A single-phase load integrated protection control method
A protection control and single-phase load technology, applied in the field of distribution network, can solve the problems of inability to realize load adjustment control very accurately, and it is difficult to solve low-voltage load protection management, so as to avoid impact load loss and ensure continuity.
Active Publication Date: 2018-05-08
JIANGMEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID
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Problems solved by technology
Since the main function of the smart meter is accurate metering and charging, the current transformer used in it is high-precision in a certain working current range, and there is a certain measurement saturation outside this range, and the load regulation control cannot be realized very accurately.
In addition, it is difficult for the smart meter to solve the integrated protection management of low-voltage loads such as zero-off, phase loss, and three-phase imbalance. Therefore, it is necessary to develop an integrated smart device for the public transformer user group. The metering function can also realize the integrated protection, adjustment and control functions for public transformer users
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0024] see figure 1 , is a schematic flowchart of an embodiment of the single-phase load integrated protection control method provided by the present invention, the method includes the following steps:
[0025] Step 101: Collect power consumption data of user equipment.
[0026] In this embodiment, the distribution network user terminal collects real-time power consumption data of user equipment, including: three-phase voltage, current, active power, reactive powe...
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The invention discloses a single-phase load integrated protection control method, which collects power consumption data of user equipment, and judges whether the user equipment is abnormal according to the power consumption data of the user equipment. If yes, then according to the power consumption data, determine the power consumption fault that occurs in the user equipment, and formulate a corresponding power consumption protection strategy, so that the power consumption protection device can perform corresponding power consumption protection according to the power consumption protection strategy. Through the above methods, safe and reliable power consumption under abnormal and fault conditions of various distribution networks can be realized. Comprehensive integrated power protection includes short circuit, overload protection, and voltage caused by zero break, phase loss, and single-phase high resistance to ground. Instability and voltage unbalance protection, prevent abnormal changes in power supply voltage and current from burning electrical equipment, ensure the continuity, reliability and quality of power supply and use through protection and control methods, and avoid impact load loss and harmonic load loss And unbalanced load loss, fully embodies the concept of safety and energy saving.
Description
technical field [0001] The invention relates to the technical field of distribution networks, in particular to an integrated protection and control method for single-phase loads. Background technique [0002] With the acceleration of my country's economic development, electricity has become an important infrastructure for the development of various fields. The construction and reform of urban and rural power grids implemented by my country's electric power industry for many years have achieved remarkable results, greatly improving the quality of power supply, strengthening the grid structure, and forming a safe, reliable and large-coverage power distribution network. However, with the wide application of power electronics technology in electric power and the access of various new power loads, a large number of nonlinear, impact and fluctuating loads have been added to the power supply system, causing distortion and harmonic pollution of grid current and voltage waveforms , ...
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IPC IPC(8): H02H7/26
Inventor 林超雄罗益荣蒋秀陈永秋李锐然黄荣旭胡小伦何南生李威强隋大奇黄光炎冯志坚赵国荣
Owner JIANGMEN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID