Unlock instant, AI-driven research and patent intelligence for your innovation.
Protective Devices and Protective Methods
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A protective device and protective spacing technology, applied in the direction of overhead lines/cable equipment, etc., can solve the problems of insufficient distance, UHV DC line does not meet the safety distance of radio stations, etc.
Active Publication Date: 2017-08-25
CHINA POWER ENG CONSULTING GRP +6
View PDF3 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Its distance does not meet the requirements of the national standard "Shortwave Radio Direction Finding Station (Station) Electromagnetic Environment Requirements" (GB13614-92), which stipulates that the protection distance of 500kV ultra-high voltage transmission lines to the passive impact of shortwave radio receiving stations must be greater than 2000m.
[0006] Therefore, in order to solve the problem that the UHV DC line does not meet the safety distance from the radio station, it is necessary to provide an effective protection device and protection method
Method used
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
View more
Image
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 1
[0042] figure 1 is a block diagram showing the structure of the protective device 100 of the present invention. The protection device 100 includes: a determination unit 1 , a setting unit 2 , an acquisition unit 3 , a calculation unit 4 , and an arrangement unit 5 .
[0043] The determination unit 1 determines whether the actual protection distance is less than the protection distance threshold, and the setting unit 2 sets the height limit section when the determination unit 1 determines that the actual protection distance is less than the protection distance threshold.
[0044] Taking the Xiangjiaba-Shanghai ±800kV UHV DC transmission project as an example, image 3 It shows the relative position of the planned position of each line in the line corridor and the direction-finding antenna. The project line is near Haiwan Town, Fengxian District, Shanghai, and the vertical distance from the Shanghai Monitoring Station of the National Radio Monitoring Center is 1.55km. However,...
Embodiment 2
[0137] In addition to the above protection device, the present invention also provides a protection method. Specifically, the protection method adopts the judgment steps, setting steps, obtaining steps, and calculating steps similar to the judging unit 1, setting unit 2, acquiring unit 3, calculating unit 4, and arranging unit 5 in the guarding device. , and arrange steps to do the same protection. Therefore, the process of this method is similar to that described in Embodiment 1 above, and will not be repeated here.
[0138] Effect
[0139] When the present invention is applied to the Xiangjiaba-Shanghai ±800kV UHV DC transmission line, the A3 Expressway (Nanhenggang) section is planned in Fengxian District, and there is a monitoring station of the National Radio Monitoring Center in the area near the south side of the line, about 1.728km away from the power line , which is less than the spacing proposed by the national standard (GB13614-92) "Electromagnetic Environment Req...
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
The invention discloses a protection device and a protection method, which judge whether the actual protection distance is smaller than the protection distance threshold, set a height-limited section when the judgment unit judges that the actual protection distance is smaller than the protection distance threshold, and obtain UHV DC According to the tower height of the iron tower in the line, the span threshold is calculated by a calculation circuit according to the tower height, and the UHV DC line is arranged according to the tower height and the span threshold. The protection device and protection method of the present invention solve the problem of safety distance and meet the distance regulation in the national standard.
Description
technical field [0001] The invention relates to the field of electromagnetic compatibility of high-voltage power transmission and transformation projects, in particular to a protection device and a protection method when the ultra-high voltage direct current line does not meet the safety distance from a radio station. Background technique [0002] With the rapid development of social economy, the demand for electricity is also increasing rapidly. However, the distribution of primary energy is uneven and the distance is long, and the land for transmission channels is becoming more and more scarce. In order to solve the above problems, it will be a new solution to increase the transmission capacity and build a transmission line with a higher voltage level as the backbone network for long-distance transmission. [0003] Aiming at the problem of passive interference of power lines to radio communications, the United States, Canada, and Japan have carried out related research on...
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
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More