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Folding simple ground grid + isolation protection

The traditional grounding technology is aimed at reducing the grounding resistance of the grounding grid. By using different
Grounding grid building materials (steel, copper, copper clad steel and other materials) and using resistance reducing agents to improve the ionization degree of soil to achieve small grounding resistance.
Expeditionary technology proposed for the first time to use isolation method to isolate lightning current and other interference sources from intruding into protected equipment and networks, so as to achieve the real goal of grounding and work.
Electronic equipment is used to isolate lightning current and other interference sources. Traditional technology relies on small grounding resistance to shunt large current components, while expedition technology realizes current distribution by adopting impedance of different frequency bands on the grounding line of protected equipment, so as to achieve current splitting. It is simpler and more economical to improve the impedance of electronic products than to reduce the grounding resistance of grounding grid.
Compared with traditional technical solutions, it has the following characteristics:
1. A new grounding system model is established, which is grounded in groups according to the functions of grounding. The joint grounding system adopting “isolated group grounding technology” standardizes the grounding method and adopts the method of “grounding distribution box” in the project realization, which makes the design, construction and maintenance of communication bureaus and stations more standardized and simple in the future, especially the maintenance and management of grounding wires more clear, completely eliminates the original wiring confusion, reduces the probability of lightning strikes and improves the network operation quality, At the same time, it greatly reduces the construction investment and maintenance cost of the base station, and has a very significant reliability index and economic index.
2. Based on the new grounding system model, the protection methods for lightning and other interference sources of power supply and signal ports are established, the port isolation protection concept is clarified, the most real cause of lightning damage to equipment is found, which provides a theoretical basis for selecting the best protection methods and facilities, and truly improves the reliability of the network and equipment. This technology realizes complete isolation of working grounding, protective grounding and lightning protection grounding, without mutual influence; It effectively prevents the working grounding of the power and electronic (Communication) equipment system and the potential increase of the cabinet due to the increase of the ground potential caused by the lightning current, and ensures the normal operation of the power and electronic (Communication) network and the safety of the equipment maintenance personnel.
3. This technology realizes that the size of the joint grounding resistance no longer affects the potential of working grounding and protective grounding, so that the value of the joint grounding resistance can be amplified. For example, selecting certain filter parameters can achieve the frequency effect level and protection level of 5 ohms in the grounding system with a joint grounding resistance of 100 ohms (this indicator is the basic indicator for the production of expedition products); Therefore, the communication office station does not need the small grounding resistance value originally required.
4. It realizes that the grounding system does not need large first construction investment and future maintenance investment, nor does it need to use resistance reducing agents and other chemicals, and improves the service life of the grounding system; The use of passive components is realized, and the maintenance free grounding system is completely realized; It has realized the technology in line with the development direction of modern technology and relevant industries. For example, Article 1 of section 4 of the regulations on the management of lightning protection system of China mobile communication base stations (issued in April 2006) stipulates that “when the soil resistivity of the base station is greater than 1000 Ω· m, the power frequency grounding resistance of the base station may not be limited”; Article 4 stipulates: “it is required not to advocate the use of products such as resistance reducing agents and high-efficiency grounding rods to reduce the grounding resistance”.
5. In actual base stations, places with high soil resistivity are often located in high mountains and other harsh environments. The traditional method is to use products such as resistance reducing agents and high-efficiency grounding rods to reduce the grounding resistance. If the new regulations are followed in the grounding method, it means that the communication base station has great potential trouble. Therefore, these new provisions of grounding technology are the supplement and the best protection measures; It fundamentally solves the problems of instantaneous interruption, service withdrawal and hardware equipment damage of power, electronic (Communication) equipment and networks; It has a wide range of applications, and it is very easy to install new buildings and renovations, filling the gap in domestic and international protection.
6. The technology has been commercialized and the following achievements have been made in the fields of power and communication:
Faster installation and construction. The electronic equipment has realized “factory manufacturing replaces on-site manufacturing”, and the installation is convenient, which can improve the construction speed and speed up the input and output. For example, the average construction time of the general communication base station project can be saved by 15-30 days;
More investment. Reduce a series of procedures such as planning, design, land acquisition, compensation, installation and maintenance, save a lot of construction and maintenance investment, and reduce at least 30% without transformation and less maintenance;
Better protection effect. Greatly reduce grounding faults and lightning strikes, reduce lightning strikes from 5% – 10% to less than 1%, and improve protection effect by 5-10 times;
More energy-saving and emission reduction. Reduce the application of steel, copper and chemical materials and reduce land occupation. Traditional grounding methods are adopted both at home and abroad. Yuanzheng is an innovative protective grounding method, which creates environmental protection and energy conservation benefits for the country and society.