On April 25, 2018, the 2018 Household Channel Development Exchange Conference and the Household Rooftop PV System Certification Specification Seminar was held in Shanghai. At the meeting, the high-quality and standardized development of household PV and the problems faced by household PV were carried out. The seminar and a PV app were broadcast live on the conference. Zhou Jianqi, chief engineer of State Grid Jiaxing Power Supply Company, delivered a speech entitled “The development of large-scale distributed photovoltaic power generation requires smart grid and technical standards supportâ€. He said that by 2018, Jiaxing has accepted a total of 25,801 photovoltaic projects including residential households, with an installed capacity of 2,521.123 megawatts, 25,402 already connected to the grid, and a total installed capacity of 20,713.392 megawatts. The ratio of grid-connected capacity to acceptance capacity is 96.34%. This is the service that is said. How much you apply, I will be able to take you online, which is the speed of response. The previous distribution is the capacity of the grid connection and the capacity of the acceptance, which is 95.6%. There is also a total of 23,579 residential PVs, which has reached 98.8%. Zhou Jianqi, chief engineer of State Grid Jiaxing Power Supply Company: Dear leaders, good morning, ladies and gentlemen. We are now advocating services, so there is nothing to say that households using photovoltaics as a grid company need to provide better service. This is the first one. The second one, I will introduce you to Jiaxing. Everyone knows that it is the birthplace of our Communist Party of China. We are called by Jiaxing and our Zhejiang Provincial Government. We call it the last time. This is also the service of our whole China from the central government. This one experience is pushing the country. As our power supply company also serves all power customers, it also actively responds to the government's call for the last run. So if you go to Jiaxing to invest in residential PV, you must run once. It is enough for us to use PV. Our concept is to open the service. There is no such management. If you submit an application form, we will give you Online, then we will generate electricity on time and pay us your expenses. I have heard the speeches of several leaders. I feel that everyone is also aware of the development of photovoltaic power plants. Whether it is distributed or centralized, or household photovoltaics, there is a need for some standards. Therefore, on this topic, I am talking about the development of large-scale distributed photovoltaic power generation, which needs the support of smart grid nuclear technology standards. This is also in line with the content of today's meeting. Here, I mainly exchange some of the problems and some thoughts we have encountered in the development of distributed photovoltaics in Jiaxing. I will make an exchange with you from several aspects today. The first one is that the smart grid has promoted the development of the five-in-one of the photovoltaic industry. Just now the host said that the national photovoltaic to see Zhejiang, Zhejiang photovoltaic to see Jiaxing, we Jiaxing is the first five-in-one smart photovoltaic industrial park established by the provincial government in Jiaxing. The second is the status quo, and the third is the grid-connected service of Jiaxing distributed photovoltaic power generation. A few years ago, we won the first prize of management and innovation of the China Enterprise Association, which is from the national enterprises. The fourth is our standard system for the development of distributed photovoltaics in Jiaxing. Just mentioned earlier, the development of the photovoltaic industry requires smart grids. We have compiled the national and may be the first guideline for the development of solar energy development in the world. It is how you regulate the development of solar photovoltaics in this region. The fifth is the impact of photovoltaic power generation on the grid. While we are doing the service, we will definitely need to give our grid a time to adapt to you. How can my grid be built to help you sell sales, that is, let everyone realize that while we are generating electricity, our grid company does have A lot of work to do. The sixth is the development status and existing problems of household PV. This is not to say much. The previous leaders also talked about it. The last one is that we still feel that whether it is distributed photovoltaic power generation or household photovoltaic, it is actually a department of smart grid, which requires the entire grid to develop and support. This is the five-in-one of our Jiaxing PV industry. We called the innovation of the industrial base, the innovation of the application model, and the construction of the regional energy Internet. This is our five-in-one industrial park in Jiaxing. This is mainly to promote the development of the photovoltaic industry, we have done a lot, so there are some experiences and introduction and sharing. By 2018, the photovoltaic projects that we have accepted in Jiaxing include 25,801 households with PV, the installed capacity is 2,521.123 megawatts, and 25,402 have been connected to the grid. The total installed capacity is 20,713.392 MW. The ratio of capacity to acceptance capacity is 96.34%. This is the indicator of our service. How much you apply, I will be able to take you online soon, which is the speed of our response. The previous distribution is the capacity of the grid connection and the capacity of the acceptance, which is 95.6%. There is also a total of 23,579 residential PVs. We have reached 98.8%, which means that our service is very good. After you declare it, There is basically not much time delay. So when you go to Jiaxing, you will definitely let you run at most once. You won't say that you have such a way to control you. In addition, after our service, we have so many Jiaxing companies above the scale of photovoltaic power generation, one of which you see. The new energy company, they just passed the enterprise that almost collapsed three or five years ago, but it is because in Jiaxing, he used the photovoltaic power generation to catch up with this good opportunity. Our grid company and Jiaxing municipal government support him. It has been listed successfully last week, and there are still a few companies that are also doing the listing sprint. Here is still an old data. It may be better by the end of last year, because we said that you are in Jiaxing, even in Shaoxing, you may Both are in the upper part of the city today. Here we talk about our integration as a photovoltaic. We mainly do some fine-grained services, actively carry out planning, standardize the preparation standards, and fully guarantee the distributed and renewable energy of services. This is where we use the available places. These are our planning ideas and goals, and they will not be launched. During the development of this industry chain, we needed to make overall planning and rational layout. The local needs an overall goal, which requires government guidance, market operation, and unified management. It is reasonable to regulate the layout of solar energy development in Jiaxing City. Because we also spent a lot of time in preparing this guide, we also went to Jinzhai in Anhui to inspect it. The entire Jinzhai area is a Lu'an area. The entire Lu'an area needs to build two 550 substations and six 200 substations to transport the entire electricity to the entire power grid. That place is a poverty-stricken area in the country. General Secretary Xi and other leaders have gone. In response to such a situation, they can use the power of the State Grid to solve the problem of photovoltaic power transmission. Therefore, any one of your governments is formulating policies. Time to consider what your policy is. If you are going to do something normal and reasonable, I feel that I have to pay attention to this matter. Therefore, I hope that all the friends here, when you go to a place, you must pay attention to how the local power grid is used. The second is how the price is, and then consider it. It is possible that the top officials of the country or the National Development and Reform Commission will introduce some restrictive policies. When these new policies happen to hit the grid, there is no way to sell them. Your investment will still cause large-scale distributed photovoltaic power generation, household photovoltaics, etc. Will it happen in these areas as well. But at least today, when you come to Jiaxing, we will definitely not let you have such a situation. This plan was compiled by the Jiaxing government at the time. This version took two time. At that time, we said some penetration problems. Because the Zhejiang government introduced a million household PVs, Jiaxing City responded positively to this indicator. In fact, today we have broken through. We have revised another edition. This revision is also the department of our government. The governor of Jiaxing City and the Development and Reform Commission of Jiaxing are still somewhat different from our grid company. Leaders are going to In the big direction, the department also thinks that this quantity should be properly controlled, because in distributed photovoltaic power generation, mainly in the medium and low voltage distribution network, in this case, many things use less power, and we currently use the entire electricity consumption. The big ones are in industrial enterprises. However, a large number of household photovoltaics are in rural areas or suburbs, where the electricity consumption of their residents is certainly small and there is a problem that power generation cannot be sold nearby. At that time, the government asked us to do it, and we overcame the difficulties. Later, the government also introduced the transaction of distributed photovoltaic power generation, but in any case, after these distributed, it still has some impact on our power grid. There are eight aspects to this impact: the characteristics and impact of the first photovoltaic power generation on the load. The second is the impact of photovoltaic power generation on load forecasting. Third, the impact of photovoltaic power generation on economic operations. The impact of the fourth photovoltaic power generation on dispatch operation management. The effect of the fifth photovoltaic power generation on the reactive voltage. Sixth, the impact of photovoltaic power generation on the operation of the distribution network. The seventh is the structure of distributed photovoltaic power generation to change the power. The eighth is the impact of harmonics generated by photovoltaic power generation on the grid. The key to the impact of the grid is on the roof of the residents. This first direct impact is the residents. When it starts better, it may not cause any problems. However, if you choose some bad, poor quality parts, after two years of use, there will be various adverse effects, especially harmonics, which will affect the residents' electrical appliances. In this place, we have specially established a platform for centralized power generation of photovoltaic power generation. At the same time, the impact on the relay protection of our power grid. In our grid company, this relay protection is crucial, and it will have a big impact on us after a large number of household photovoltaic roofs generate electricity. There is also the development of third-party operation and maintenance of Jiaxing distributed photovoltaic power generation. County system problems and suggestions, we have given a platform to this place. Because we learned that some power stations have no operation and maintenance team; the operation and maintenance team consists of components of the pre-construction personnel; and that the operation and maintenance power station is remotely monitored using only the online "Internet" platform. The sixth is the problem of grid-connected services for household photovoltaics. I am here two, one is that the government vigorously promotes distributed photovoltaic power generation, and has issued policy documents to promote the development of household photovoltaics. Formulate a subsidy program to encourage households to use light development. We are here to reach 200,000 households in Jiaxing by 2021, with a total installed capacity of more than 600 MW. We feel that this will only be achieved, and we will not finish it. At present, our government is lacking supervision of residential PV, because since the government wants to invest subsidies, then I think your supervision should be done. We feel that this is a complete system for the design, construction, acceptance and so on of the power station. As a grid company, we are a word, it is to support the welcome and service, we Jiaxing is open service, you run at most once. This is our resident PV application form. This is a process inside us. You are relieved of it for you. In Jiaxing, we absolutely have no need to eat cards. This is absolutely assured. This is the grid-connected standard for our grid company to serve residents' PV. Our standard design was developed by our engineers of Jiaxing Power Grid Corporation. There are two kinds of this. It is just that we draft a standard for residential PV and cages in the industry. In this standard, we want the first one to be a separate standard. In the future, we will combine the existing residential electricity meter box and power generation box in the grid. First, in the Internet + composition, in addition to security, we also have information security. We feel that we hope that there will be experts in the future of this meter box to review. We hope that the development of this meter box is a system for grid connection of photovoltaic power generation. This is not just a record of the amount of power generated. The security and confidentiality of this information, once it has reached the Internet, constitutes a network security problem. How to solve this problem? The information is very smooth, but at the same time to ensure the security of the network, even if there are really hackers in the future, we feel that this place needs a network security thinking, future competition may be considered in this regard. We are preparing such a guide for this thing. Just said that what we are doing now is to perform grid-connected operations only on the devices you have networked to see if your device features are not available. The grid-connected switch is closed and tested to verify its safety. We have combed several aspects of the existing problems, because some of them are invested by the residents themselves, and they themselves are not very familiar with this aspect. The second one is that PV investment currently says that we have a life expectancy of 20-25 years, but we are seeing a lot of short-term behavior, not considering 20-25 years, and then some are for speed. Generally speaking, we feel that now The overall quality of distributed or residential PV power plants is also somewhat problematic. We also found that many of them failed to meet the required level. We now have a large number of all power generation subsidies that we have tested here. We have this data, but we don’t talk too much because this It is based on industry self-discipline issues. Another problem is that there is a lack of typical design, there is vicious competition, and there is compression construction cost. This may have problems with the construction side and problems with the construction itself. Another one is that after we cast it, we think that the number of power stations is relatively large, the geographical distribution is relatively scattered, the monitoring methods are limited, and the relevant operation and maintenance standards and systems are lacking. We also have a national standard here, because it is really difficult for you to operate a single family. It is a concept that we have a series of means for remote monitoring, which is integrated online and offline, so that the cost of electricity for each power station is very light. The user also paid. The second is that you spend so much money, if it does not produce benefits, it is also a waste, so we draft a national standard, the technical specifications of distributed photovoltaic power generation. Here is a suggestion. We call on the government to introduce the standard for photovoltaic integration and cages as soon as possible. We have already compiled the industry standards. The application has been reviewed by an expert as soon as possible. The second is to introduce the photovoltaic design specifications for households as soon as possible, and the third is to introduce the photovoltaic construction specifications for households as soon as possible. The fourth is to introduce the PV acceptance specification for households as soon as possible, and the fifth is to issue the distributed PV centralized operation and maintenance technical specifications as soon as possible. The last one is what we said earlier. Whether it is a residential power station or a distributed power station, and a large centralized power station requires coordinated development of the entire resource grid. Therefore, we emphasize here that the development of distributed power grids requires the support of smart grids and technical standards. . The development of micro-grid further supports the development of distributed photovoltaics. Any micro-grid or residential photovoltaic power generation is on a local power grid. For example, there are 200 households here. The 200 households are now connected to the distribution voltage. Nowadays, distributed photovoltaic power generation is an active distribution network, and there are new vehicles in the future. In fact, it is a low-voltage power grid and residential electricity and various electrical equipment, which constitutes a regional microgrid. We think The development of microgrid is a good support for the development of distributed grids. Of course, what is now said is the energy grid. If there is heating in the north, this place also has how to convert electricity into heat. This is also a regional energy Internet. The second is the development of the microgrid to further support the innovation of the distributed photovoltaic power generation business model. In addition to the previous construction and operation and maintenance, this business model may also be a distributed energy transaction that the country is now launching. We think that the trend of total development is only to do the transaction, do it right, the real energy The rational use of decentralized, distributed and low-carbon cleaning can only be achieved. At that time, the market will do a good job of self-compression. For example, I can't completely digest this place. What do you do with so much photovoltaic power generation? Then it needs to be connected to the grid. This is better because the country is arguing. Just like the loss problem mentioned above, the transportation cost problem. The third is that grid companies will increase investment in smart grid construction to support the development of clean energy. The fourth is to attach importance to the construction of distributed photovoltaic power generation, and the quality of operation and maintenance will support the development of photovoltaic power generation. The development of the fifth related distributed photovoltaic power generation technology standard will support the development of photovoltaic power generation. The sixth intelligent substation and the national microgrid demonstration project. We Jiaxing Company did one in a substation, one is the regional solar power generation planning we have completed, the distributed photovoltaic power generation system centralized operation and maintenance technical specifications we are designating. The third is the technical specification for fire protection and electrical protection design of photovoltaic power generation systems. There is also a specification for the safety check of the building structure of the fourth building photovoltaic power system. It is that after going up, everyone has not checked its structure very well. After the wind blows off, do you also smash the roof of others at the same time? Lost? It is possible. The fifth is the lightning protection grounding safety calibration specification for building photovoltaic power generation systems. There are not many lightning protection grounding problems in this area. We are also setting standards. The following are the technical specifications for residential distributed photovoltaic integrated meter boxes, and finally the operation and maintenance procedures for distributed energy storage power stations. In this way, as a Jiaxing grid company, we have a relatively complete support for the development of distributed energy and distributed photovoltaic power generation. After all these are done, we feel that this matter will be able to do well. This is what we understand as a smart grid and a smart city, that is, the transmission, transmission, transformation, distribution, use and dispatching of several major links, large power stations as large voltage. This is the construction of a smart city that we now propose at the top of the country. We believe that the two core elements of energy and information are supporting the entire smart city. To operate efficiently, the city must have energy and energy. There is information. In fact, our smart grid is precisely the synchronization of energy and information. The energy and information security issues to be considered in this issue, whether from energy security or information security, I think we must have such awareness in the development of photovoltaics. To develop a similar product. This is our own micro-grid that integrates photovoltaics on the roof and walls in our own substation. We have photovoltaics on this roof and on the walls, and the roof is crystalline silicon. The concept of the building energy grid we are talking about, now through the realization of the microgrid, is done according to such a goal. This is our live picture, this is being done, this picture is not an effect picture, it is our realistic optimism and precision. This is some of the things on our wall. This project is also a new energy microgrid project approved by the National Development and Reform Commission and the Energy Bureau. It is one of 28 demonstration projects. This is the practice and thinking of smart grid and photovoltaic power generation that we are doing in Jiaxing. . Thank you! Our factory can produce the galvanized traffic signal steel poles with various height. Traffic Signal Steel Pole,Camera Galvanized Lamppost,Traffic Signal Lighting Pole,Hot-Dip Galvanized Traffic Signal Light Pole Jiangsu Baojuhe Science and Technology Co.,Ltd. , https://www.galvanizedsteelpole.com
