Since June 2015, the State Grid has begun to fully implement smart meter dual-mode communication technology. This kind of smart meter adopts the dual-mode chip that was first developed in China and uses both power carrier and wireless communication.
At present, the single-mode communication technology of power carrier or wireless communication is widely used in China. However, the shortcomings of single-mode communication are obvious, and there are problems such as signal instability and poor penetration. The construction of national residential power grids calls for more stable and advanced power communication technologies. In July 2014, as dual-mode communication was widely recognized as a next-generation transmission solution for single-mode communication, State Grid Corporation initiated the development of a national standard for dual-mode communication technology and plans to fully implement dual-mode in June this year. Communication technology.
Recording small currents, residential electricity consumption will increase
Some residents feel that “the electricity consumption has increased†after installing the smart meter. According to experts, the sensitivity of smart meters is much higher than that of traditional mechanical meters. Some small-load currents (such as TV, air conditioners, computers, etc.) can be sensed by the standby power, so that the power consumption is small, although it is very small, It will also be recorded, not to mention that many Chinese families are not accustomed to cutting off the power supply of "electricity consumers" (small appliances), so the accumulated electricity is actually not small. The mechanical meter, because of its low sensitivity, does not sense the small load current, and does not count it into the meter, so it will give the user an illusion that the smart meter "goes faster" than the mechanical meter.
The person in charge said that taking the mobile phone charger as an example, a 50 mA current smart meter will respond, even if the mobile phone charger with 100 mA flow, after the charging is completed, if the smart meter is not unplugged, the record will be generated. In real life, many people will only unplug the phone after charging the phone, and will not unplug it.
Nowadays, many households use the water purifier to pull out the plug all the year round, and it has become the "long light" of electricity consumption in the home. In daily life, it is necessary to develop a power-saving habit. If the TV can be switched off and off, it is best not to turn off the remote control. It is best to unplug the socket. When the water heater is not in use, it is best to unplug the plug to avoid repeated heating and power consumption for a long time; Air conditioning in time to clean, set a reasonable temperature to save electricity.
Buy electricity and sell electricity can get a watch
The smart meter can not only calculate how much electricity is used. Compared with the traditional meter, it changes the traditional one-way metering into two-way metering. The power company and the home user can realize the two-way interaction of role conversion, and the user can also supply power to the grid.
Li Jun introduced that the old electric meter can only record how much power is used by the residents. In the past, distributed power supplies generated by photovoltaics, wind energy, etc., were required to install a meter when calculating power to the grid. Now, through the two-way metering function of the smart meter, At the same time, it can record how much electricity the residents generate by themselves. At present, in the context of vigorous implementation of clean energy, home photovoltaic power generation is in full swing in Jiangcheng. There are 108 photovoltaic power generation users in Wuhan. All users who install distributed power sources such as photovoltaics can use their electricity meters to sell electricity and buy electricity. Two-way record.
Smart home management can be supported in the future
A few days ago, a test by the Jiangsu Electric Power Research Institute showed that the power of the network set-top box was 5.98 watts in standby mode, and the TV, washing machine and hanging air conditioners were 0.65 watts, 0.4 watts and 1.2 watts respectively. The power consumption of the set-top box in standby state is about 10 times that of ordinary electric appliances, and it does not pull the plug to "eat" 50 kWh a year.
There are also "electricity consumers" in the home, and smart meters can act as family "electrician". Li Jun introduced that smart meters have powerful functions similar to computers. They can record the daily usage and usage of users every day and time. With mobile terminals and APPs, they can post, push, and exchange information such as power outages and price adjustments to achieve two-way interaction. .
After realizing smart home in the future, smart meter can be used as the most basic information source for users' power consumption, which can effectively support the intelligent home control system to intelligently manage the electrical appliances in the home. Li Jun told reporters that smart meters know the power consumption of each electrical appliance at every moment. Combined with the smart home control system, it can not only help identify high-energy-consuming electrical appliances, but also intelligently use household electrical appliances according to electricity price policies and human needs. Reasonable and economic planning to achieve energy saving and consumption reduction.
Siren Horn,Alarm Horn,Police Horn
Chinasky Electronics Co., Ltd. , https://www.chinaskyswitches.com