During the “Eleventh Five-Year Plan†period in Northeast China, the planned capacity of the small thermal power units will be shut down and 4.0308 million kilowatts. Liaoning Province and Jilin Province will complete the planned targets two years in advance and Heilongjiang Province one year ahead of schedule. Among them, Jilin Province has completed 1.597 million kilowatts, which exceeds the planned target 2 More times. The report shows that in 2010, 14 small thermal power units of 9 power plants were shut down in the northeast region, with a total capacity of 1.558 million kilowatts. Among them, Liaoning Province shut down 946,000 kilowatts, Heilongjiang Province shut down 600,000 kilowatts, and the Mengdong region shut down 12,000 kilowatts.
As an area where China's traditional heavy industries are concentrated, the energy consumption of the Northeast region has increased year by year as the total economic output has increased. In Liaoning Province alone, electricity consumption accounts for about half of the Northeast region. The installed capacity of thermal power generation accounts for more than 90% of the total installed capacity of the province's power generation. The coal consumed by thermal power generation also accounts for more than half of the province's total coal consumption. The high proportion of small thermal power is a major cause of high energy consumption and serious pollution in the power industry. For thermal power companies, it is an inevitable choice for the small and medium-sized enterprises to help the superior and the inferior. Electric companies are pushing for the construction of large-scale small and medium-sized projects, increasing the proportion of highly efficient environmental protection units, improving the power supply structure, and achieving success in energy-saving and emission-reduction work.
Dual frequency band refers to the characteristic that the same communication device can work in two frequency bands. There are many applications, such as dual-band routers. A dual-band router refers to a router that supports two channels, one 2.4G channel and one 5G channel. Generally, routers are designed to be 2.4GHZ, so there will be mutual interference between signals in the same area. At this time, if you choose the 5.GHZ frequency band mode, it will effectively avoid signal interference in these frequency bands, and wireless signals will be transmitted accordingly. farther.
ONU (Optical Network Unit) optical network unit, ONU is divided into active optical network unit and passive optical network unit. Generally, devices equipped with network monitoring including optical receivers, upstream optical transmitters, and multiple bridge amplifiers are called optical nodes. The PON uses a single optical fiber to connect to the OLT, and then the OLT connects to the ONU. ONU provides services such as data, IPTV (i.e. interactive network television), and voice (using IAD, i.e. Integrated Access Device), truly realizing "triple-play" applications. The ONU has two functions: it selectively receives the broadcast sent by the OLT, and responds to the OLT if the data needs to be received; collects and buffers the Ethernet data that the user needs to send, and sends it to the OLT according to the assigned sending window The end sends the buffered data. The application of ONU can effectively improve the uplink bandwidth utilization of the entire system, and it can also configure the channel bandwidth according to the network application environment and applicable service characteristics to carry as many end users as possible without affecting the communication efficiency and communication quality, and improve the network utilization Rate and reduce user costs.
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