A transformer digital protection device and method based on total pressure information
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A transformer, digital technology, applied in the field of transformer digital protection devices, can solve the problems of differential protection misoperation, limited oil pressure change, box deformation, etc.
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A transformer, digital technology, applied in the field of transformer digital protection devices, can solve the problems of differential protection misoperation, limited oil pressure change, box deformation, etc.
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0045] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0046] see figure 1 , the transformer digital protection device based on full pressure information in the present invention includes: a transient oil pressure characteristic measurement module, a switch input module, a signal conditioning and acquisition module, a digital core module, an external communication interface module, and a man-machine dialogue module and the switch output module; among them, the transient oil pressure characteristic measurement module is connected with the signal conditioning and acquisition module, the signal conditioning and acquisition module, the switch input module, the external communication interface module, the man-machine dialogue module and the switch output module are all Connected with the digital core module;
[0047] The transient oil pressure characteristic quantity measurement module consists of several high-frequency dyna...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
A transformer digital protection device and method based on full pressure information, including: a transient oil pressure characteristic quantity measurement module, a switch input module, a signal conditioning and acquisition module, and a digital core module; wherein, the transient oil pressure characteristic quantity measurement The module is connected with the signal conditioning and acquisition module, and the signal conditioning and acquisition module and the digital input module are all connected with the digital core module. The invention obtains the digital information of transient oil pressure at multiple measuring points inside the oil tank in real time, calculates and obtains the full value of the operating pressure representing the amplitude of the oil pressure, and utilizes the significant difference of the characteristic value under different operating conditions of the transformer to construct the protection criterion and the threshold value The setting method realizes reliable, rapid and sensitive screening and removal of internal faults in the transformer oil tank, and is not affected by the excitation inrush current. The principle of the invention is simple, the device is easy to implement, and it is suitable for the current and future requirements of large-capacity and high-voltage power transformers for non-electrical protection "four properties".
Description
technical field [0001] The invention belongs to the field of power systems, and relates to a transformer digital protection device and method based on full pressure information, which are used for reliable, fast and sensitive identification of internal faults in oil tanks of oil-immersed power transformers. Background technique [0002] As an important component of power transmission, the power transformer will have a serious impact on the reliability and operation stability of the power system once it fails. Especially for large power transformers installed at the hub of the system, because of their high voltage level, large capacity, complex structure, and high cost, damage due to failure will inevitably cause huge economic losses. Therefore, a relay protection device with good performance and reliable operation must be installed according to the capacity and importance of the transformer. [0003] The development of relay protection technology depends on the understandin...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More