Power monitoring instrumentation is a new and subdivided industry in the electrical instrument industry. The category belongs to installed digital instruments, which evolved from analog pointer instruments and power transmitters. With the development of computer technology, power monitoring instruments have been applied to all aspects of transmission, transmission, transformation, distribution, and use of power systems to measure, measure, analyze, diagnose, control, protect, and simulate electrical parameters of the power grid. Quantity output and standard communication interface. In different application occasions, different combinations of functions can be simple, but it is roughly divided into three types of instruments, namely, monitoring and protection instrumentation, energy analysis and management instrumentation, and electrical safety instrumentation. In order to adapt to the structure and installation characteristics of the switch cabinet of the power supply and distribution system, the installation method is divided into two types: embedded type and rail type.
As a new industry, the market prospects of the power monitoring instrument industry are related to the following factors: (1) the intelligent demand of the power distribution system at the user end and the promotion of the smart grid; (2) energy saving and emission reduction of industrial and mining enterprises and construction buildings; (3 ) New energy, development needs of new industries; etc.
New energy, new industry development needs
With the development of society, the demand for new energy such as nuclear power, hydropower, light energy and wind energy has been gradually expanded to reduce the dependence on non-renewable energy. The development of new energy also brings development opportunities to power meters. Taking a photovoltaic power plant as an example, a multi-channel DC detection device, a DC multi-function meter, a harmonic meter, and the like are required for the confluence box. A 10MW photovoltaic power station installed various types of power monitoring instruments in about 1200 units.
Energy Saving and Emission Reduction in Industrial and Mining Enterprises and Buildings
The ministries and commissions of the State Council and local governments have promoted and implemented energy-saving and emission reduction as one of their key tasks. It is required that high-energy-consuming enterprises adopt energy-reduction technologies and measures and improve energy efficiency by establishing an energy management system. To this end, industrial and mining enterprises implement contract energy management, government agencies and large-scale public buildings to implement energy monitoring (see Jianke No. 114), electricity as the most important energy, large-scale consumer energy users should establish an energy metering system. Therefore, smart power meters for internal management of enterprises will increase with the promotion of energy-saving policies.
Intelligent demand of power distribution system and promotion of smart grid
At present, the production and transmission of electricity and high-end users, such as telecommunications, banking, petrochemical, and other large users, are distributing information and intelligence. With the advancement of smart grids, electricity production, transmission, and use will communicate with each other, and smart power meters will be information sensors for various power grid links, linking information items of electrical equipment under the smart grid. Therefore, the power monitoring instrument will also gradually expand with the general level of customer-side power distribution intelligence.
With the progress of society, the protection of human life and safety is also becoming more and more important. In order to use electricity safely, the state has issued a number of design specifications, such as JGJ16-2008 "Design Code for Civil Buildings" and GB50016-2006 "Code for Design of Building Fire Protection". "And so on, the provisions of the theater, shopping malls, exhibition halls, hospitals, telecommunications buildings, broadcasting stations, high-rise buildings and other personnel-intensive or important places to install residual current type fire monitoring devices to prevent leakage caused by fire.
In addition, GB50333-2002 “Hospital Clean Surgery Department Building Design Specification†stipulates that when the clean operation department at the county level or above hospital uses the IT power distribution system to supply power, it must install insulation monitoring instruments to ensure the safety of the patient's life. The current market is basically made up of Germany. Bendell’s monopoly, despite the requirement for retrofitting of specifications, cannot be popularized due to its high price. However, with the launch of domestic products, breaking the monopoly, falling prices, and the spread of medical and health, the market will further expand. Therefore, power meters have great demand in new energy and new industries.
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They fuction as the adjuster of the webbing,by treading the webbing through the axel,and ratcheting it back and forth,that's how we manage to tighten the webbing,is also called ratchet tensioner.
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