Smart grid, popularly speaking, is the intelligence of the grid, also known as "grid 2.0", it is built on the basis of an integrated, high-speed two-way communication network, through advanced sensing and measurement technology, advanced equipment technology, The application of advanced control methods and advanced decision support system technologies achieves the goals of power grid reliability, safety, economy, efficiency, environmental friendliness and safe use. Strengthening the construction of smart grids has a very significant advantage for the efficient operation of the electricity market.
China's smart grid transformation project has long locked the hearts of multinational companies. Whether it is LG in South Korea, General Electric in the United States, or Siemens in Germany, they want to borrow the terminal transformation project of smart meters to seek China's upcoming global expansion. The foothold of the largest market for advanced transmission and distribution systems.
However, the installation of smart meters has also caused many users to question. According to a survey conducted by Xinmin.com, a local media in Shanghai, 80% of Shanghai residents have installed a smart meter, and their electricity consumption has soared. , To 102 yuan after refitting, and then 316.20 yuan one month after installing the meter.
In this regard, the power sector is also very headache, because "the electricity meter is not a problem."
They do n’t know how to use electricity intelligently
British and American households that have already undergone smart grid transformation may have more experience and voice in this phenomenon.
In 2010, major power companies in the United States installed approximately 2 million smart meters in the United States. Since then, the nightmares of the major power companies have begun, various complaints have flooded in, and some state workers have even received collective lawsuits from the masses. The main content of the complaint is "the new electricity meter increases the electricity consumption".
Through investigation, it is found that the cause of this phenomenon is not the "power consumption" of the meter, but the user's electricity consumption habits and the common sense of smart electricity consumption are not in place.
Of course, after a busy day of work, it takes another two hours or more to repair the power of the washing machine, air conditioner and even mobile phone charger. Which appliances use less electricity during what time? This obviously violates the original intention of the smart power system to optimize the user's power experience.
In fact, the market for demand-side management (management implemented by the power user) is as large as the market for smart meters, because users who install smart meters may not even know how to use electricity smartly.
You need a total solution
All supermarket managers may have a headache: There are always so many hours in a day, the customers in the supermarket are scattered, but you have to turn on all the lights and turn on for these customers, even if they are alone. Apply a sufficient amount of air-conditioning or heating, otherwise your well-made reputation will be destroyed.
In fact, in these few hours, "sneakly" turned off a few lights and turned off the air conditioners in a few corners. The customer's consumption experience was no different.
At this time, you may need a total solution for supermarket electricity consumption. The solution here is not to turn on all the lights yourself at 8 am, but to turn off the lights at 3 pm to optimize electricity consumption. --The computer terminal can solve all things for you.
Of course, you do n’t need to count the number of lights you turn on every day. The computer in the background will count the power consumption of each device, and then help you manage everything.
All you need is to count the electricity bills issued to you by the power company, and calculate how much the net profit has increased this month.
Is this great? Even better, there is now such a service around you.
Teach you how to save electricity and expenses
Wuhan Nanrui Co., Ltd. (hereinafter referred to as Wuhan Nanrui) of the State Grid Electric Power Research Institute is a company that studies how to help you use electricity intelligently.
To the east of Wuhan ’s outer ring, a future technology city is being built. Here, the smart grid is not only a demonstration project, but also a way of power supply and consumption in this satellite city.
"We use the user information fed back by the electricity terminal to count the data of electricity consumption, even gas and water consumption of the user terminal, which time period is the peak of electricity consumption, which area prefers when to use electricity, and which appliances are easier during which time period Used ... Then make a comparative analysis so that we can customize a power plan for the user. "Liu Fei, a senior engineer at Wuhan Nanrui, said," This power plan is executed in the background. If you need it, Before you step into the house, the lights, TV, and air conditioner are all turned on. If you have the habit of taking a bath first, then let the system be set to burn hot water first! "
Not only individual users can save electricity through the smart power scheme, but enterprises can also ensure the stability of power consumption through the smart power scheme.
Huawei Technologies Co., Ltd. is one of the earliest enterprises to settle in Wuhan Future Science and Technology City. For high-tech enterprises like Huawei, the reliability and stability of the supply current will directly affect the qualification rate of products. "A small fluctuation in voltage or frequency , It is possible that all operations on the entire production line will be scrapped. "Said Zhang Aifang of Wuhan NARI Energy-Saving Division.
By monitoring the power supply in the factory area, the background will monitor the operation status of the power supply system in the factory area in real time, and continuously adjust the power supply in time for power failures to ensure stable power consumption on the production line. This will also save a lot of expenses for manufacturing enterprises.
"Not only users, government power supply departments can also benefit from these data." Zhang Aifang said, the user's electricity consumption information collected by smart terminals can provide power dispatching reference for power supply departments, and can also monitor high energy consumption areas The electricity consumption situation provides a good basis for demand bargaining.
There are more than one Science and Technology City projects in China in the future. Beijing, Tianjin and Guangzhou also have similar Science and Technology City projects. "We hope that through this open platform, we will attract more scientific and technological talents to participate in the research of smart grids. On the one hand, the Science and Technology City provides a template for smart cities, and on the other hand, it also allows scientific and technological talents in the park to experience the life Looking for inspiration, exploring a more humane technology and service model. "Zhang Aifang said.
In the life and production scenarios, the application of smart grids is more focused on the development of modern service industries-exploring the back end and providing efficient and energy-efficient power planning.
Maybe electricity can still make money
In the exploration of the back end, the power consumption solution is only a part, and smart appliances (that is, the use of smart energy management systems to optimize grid distribution load) are also rapidly developing.
According to the latest report from Parker ’s survey agency, the annual output value of the smart appliance market will grow from US $ 613 million in 2012 to US $ 34.9 billion in 2020.
This means that appliances in the home will become more "smart"-they know how to save power. What may delight individual users is the blurring of the boundaries between producers and consumers in traditional power supply.
In February, the State Grid Corporation of China issued the "Opinions on Doing a Good Job in Distributed Grid Connection Services." According to this new policy, in the future, people's homes can not only use solar energy, natural gas and other new energy power generation devices to power their homes, but also sell unused electricity to the grid.
Although the implementation efficiency of this new policy needs to be observed, the hidden opportunities for clean energy development cannot be ignored. Especially for the once-surplus wind and solar industries, the concept of national energy saving may allow them to find new vitality.
Electricity or new investment darling
New energy power generation equipment has been greatly developed and can be used in daily life. However, to realize electricity storage and eventually sell it as a resource, the problem of electricity storage also needs to be solved, and this is also a difficult problem to be overcome worldwide.
Minnesota, North Dakota, and Iowa are home to the largest wind turbines in the United States. Although these wind power equipment can continuously convert wind energy into electrical energy, they cannot output all of them-these places do not have enough transmission capacity .
Although we can transform the power grid to achieve the output of electrical energy, this is obviously not a long-term plan-who can predict how much unused electricity will be output in the region in 20 years?
Maybe the car can be used as a buffer to store the electrical energy that is not used up and cannot be output-at least Siemens technicians think so. If there are 200,000 electric cars connected to the grid, you can quickly input 8,000 megawatts of electricity, which even exceeds the current total electricity consumption in Germany. In turn, these 200,000 electric vehicles can store Germany's unused electricity, which may prevent the 2006 Western Europe blackout from happening again.
In addition to energy storage, mobile substations have become necessary in order to coordinate stable, continuous and reliable power output. Although this technology has been used abroad for many years-Ontario Hydropower Service Company of Canada has been using mobile substations for more than 40 years, but In China, mobile substations have just opened the market.
In June 2012, the research and development team of Siemens Transformer (Wuhan) Co., Ltd. and Dalian Power Supply Company developed the first domestic intelligent mobile substation with a voltage of 66 kV or more. It also uses AC and DC power supplies with solar photovoltaic power generation and supercapacitor energy storage, which will make the mobile power supply more environmentally friendly.
Siemens Energy Chief Technology Officer Micheal Weinhold believes that we are currently at the beginning of a new era of electricity, and the power grid will connect the whole world.
For investors in Silicon Valley, solar panels, wind energy and LED lights have been the hot spots of the previous round of investment. These clean energy sources need to be "re-evaluated". "The power system that allows multiple energy forms to be connected is The next round of investment boom. "Allen, CEO of American investment company VantagePoint said.
Money-making opportunities brought by smart grid
Now, what you can see is that even if the power industry is a resource-based industry, it still does not prevent the smart grid from giving everyone opportunities to make money.
As a capital-intensive and technology-intensive industry, the large investment in the power industry and the long industrial chain are bound to benefit many companies in the upstream and downstream. Even if you are just a programmer ridiculed by the times, you may be able to raise wages because of the smart grid -The construction of a smart grid is inseparable from technological upgrading in the communications and information industry.
"In the future, the smart grid will first need to solve the problem of a large amount of clean energy access." Zhou Xiaoxin, academician of the Chinese Academy of Engineering, said at a previous smart grid academic exchange meeting. The introduction of information technology to realize smart grid dispatching is an inevitable path for large-scale access to clean energy such as wind energy.
The improvement of information technology also directly affects the security of the smart grid, because the data collection and analysis itself contains a lot of user privacy and energy scheduling and usage data.
A siren is a loud noise-making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire trucks. There are two general types: pneumatic and electronic.
Many fire sirens (used for calling the volunteer fire fighters) serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire
sirens are either mounted on the roof of a fire station or on a pole
next to the fire station. Fire sirens can also be mounted on or near
government buildings, on tall structures such as water towers,
as well as in systems where several sirens are distributed around a
town for better sound coverage. Most fire sirens are single tone and
mechanically driven by electric motors with a rotor attached to the
shaft. Some newer sirens are electronically driven speakers.
Fire sirens are often called "fire whistles", "fire alarms", or
"fire horns". Although there is no standard signaling of fire sirens,
some utilize codes to inform firefighters of the location of the fire.
Civil defense sirens also used as fire sirens often can produce an
alternating "hi-lo" signal (similar to emergency vehicles in many
European countries) as the fire signal, or a slow wail (typically 3x) as
to not confuse the public with the standard civil defense signals of
alert (steady tone) and attack (fast wavering tone). Fire sirens are
often tested once a day at noon and are also called "noon sirens" or
"noon whistles".
The first emergency vehicles relied on a bell. Then in the 70s,
they switched to a duotone airhorn. Then in the 80s, that was overtaken
by an electronic wail.
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