By 2020, the power outage will be significantly reduced. The regional power grids such as the urban area and Songshan Lake will be in a state of “free repairâ€. The electricity consumption of enterprises will be more scientific and energy-saving, and the use of electricity by the society will be more efficient... The reporter recently learned that the power grid planning in three years At the end of the construction of the "Conference Warfare", in order to help the Dongguan enterprise multiplication plan and urban quality improvement plan, Dongguan launched the "Grid Upgrade Action".
According to the plan, from 2017 to 2020, the city's main network and distribution network will have an investment of over RMB 11.5 billion, and will complete 135 projects of “three batches†(completed batch, started batch, and reserved). The “upgraded batch†distribution network has a total of 5,200 projects and installed 1.09 million smart meters. By the end of 2020, the “smart, reliable, efficient and green†smart grid in Dongguan has been basically completed. The distribution network can be transferred to the power supply rate, the distribution network automation coverage rate, the distributed photovoltaic project access rate, and the smart meter coverage rate. All indicators achieved “four 100%â€.
Three years of "conference warfare" transmission capacity has been significantly enhancedThe reporter learned that from 2013 to 2016, Dongguan launched the power grid "conference war" action. Cai Zhiwen, deputy director of the Planning and Development Department of Dongguan Power Supply Bureau, said that since the launch of the "General Assembly War", Dongguan Power Grid has been safer and more reliable, and its transmission capacity has been significantly enhanced. By the end of 2016, a total of 10.003 million kVA of transformer capacity was added in Dongguan, and the new line length was 646.62 km, effectively alleviating the electricity consumption of Songshan Lake, Dalang, Houjie, Fenggang, Tangxia and Huangjiang. The problem of limitation has solved the problem of insufficient power supply capacity in towns such as Chang'an, Humen and Dongcheng.
At the same time, the problem of power "card neck" has been effectively alleviated. The "Conference Warfare" has solved the problem of 21 "line neck" power, full load overload and continuous reduction of power grid risk. It is Rail Transit Line 2, Wanhui City Rail Songshan Lake Traction Station, International Trade Center, Huawei Terminal Headquarters, A number of major projects such as Jiji Group, China Electronics Industry Park and Dongcheng Wanda provide reliable power supply guarantee.
In addition, the layout of the substation is more reasonable and the quality of the architecture is on a new level. At present, Dongguan has formed six power supply areas centered on 500 kV Dongguan, Hengli, Guancheng, Shuixiang, Longjiang Substation and Baoan Station (Shenzhen). The power supply capacity and safe operation level of the grid have been greatly improved.
"Upgrade Action" focuses on smart distribution network constructionAt present, the "Conference Warfare" has achieved remarkable results. Cai Zhiwen said that on the basis of consolidating the results of the "Conference Warfare", the Municipal Party Committee and Municipal Government proposed to implement the "Grid Upgrade Action" in the work report to further increase the planning and construction of the power grid. Provide a solid and reliable power guarantee for Dongguan to achieve a higher level of development at a higher starting point.
"On the basis of the 'conference warfare', the reliability of power supply has been greatly improved, so why should we start the upgrade operation? We will pay more attention to the customer experience and build a smart grid. At present, the intelligent level of Dongguan Power Grid is higher than that of advanced cities at home and abroad. It is relatively backward." Ding Wei, director of the Infrastructure Department of Dongguan Power Supply Bureau, told reporters.
According to the work target, from 2017 to 2020, the city's main network and distribution network accumulated more than 11.5 billion yuan (that is, the main network investment of 4.5 billion yuan, distribution network construction and transformation and upgrading investment of about 7 billion yuan), completed the "three batches" A total of 135 main network projects (56 completed, 39 started, 40 reserves), "upgraded batch" distribution network a total of 5200, installed 1.09 million smart meters.
“In the past, the investment in the construction of the main network occupied a big part, but due to the large investment in the 'conference warfare', the framework has been set up. Therefore, the focus of this upgrade operation is to pay attention to the construction of distribution network and to bring the distribution network construction into the city. The project plans to invest a total of 7 billion between 2017 and 2020,†Ding said.
Dongguan smart grid will be basically completed in 2020It is worth noting that, according to the plan, by the end of 2020, the reliability of power supply of the main network of the city will continue to increase, the intelligentization of distribution network automation will be significantly improved, the distribution network can be transferred to the power supply rate, the distribution network automation coverage rate, and the distributed photovoltaic project will be connected. The four indicators of the rate of entry and smart meter coverage have achieved “four 100%â€, the quality of power supply service has improved significantly, and the “smart, reliable, efficient and green†Dongguan smart grid has been basically completed.
Liang Yaolin, director of the Planning and Development Department of Dongguan Power Supply Bureau, told reporters that the current distribution rate of Dongguan distribution network is about 75%, distribution network automation coverage is about 50%, and smart meter coverage is about 70%. By 2020, these three indicators Both will reach 100%.
The staff explained that the higher the power supply rate of the distribution network, the smaller the probability of power outage. Simply speaking, there is a problem with one line, and it can also be transferred from other lines. After the automatic coverage rate of the distribution network is increased, It can quickly find the fault point of the distribution network, and can automatically switch to other lines to supply power. After using the smart meter, the power supply department no longer needs to go to the door to read the meter. The customer feels more convenient, and can understand the power consumption situation in real time, which is convenient for the enterprise. Develop an energy saving plan. “The intuitive feeling of the residents is that there is less power outage, and the company can cooperate with the power supply department to allocate power more scientifically and improve the utilization efficiency of electricity by the whole society.†Liang Yaolin said.
Ding Wei also said that the creation of a smart grid can achieve "free repair", which will be achieved by the distribution network automation and the transferable power supply rate. "For example, if one power supply fails, the other power supply will be automatically transferred, and the user will not encounter a power outage. The previous repair can be turned into an overhaul state."
Power Supply Bureau: Residents do not have to talk about "electricity"The public's misunderstanding of electromagnetic "radiation" is a major difficulty in building and upgrading the power grid.
For the staff of the power supply bureau, in the process of building and upgrading the power grid, it is often the people who do not understand what is most helpless. Liang Junxi, deputy director of the Shatian Branch of the Dongguan Power Supply Bureau, told the reporter that during the site selection and construction of the substation, the masses had a great misunderstanding of the electromagnetic "radiation". The problem in this regard is quite prominent.
At that time, Ye Zhuhui, deputy director of Tangxia Branch of Dongguan Power Supply Bureau, also said that although a series of construction procedures were passed during the construction of a substation, the misunderstanding of the masses made them encounter many difficulties. "We thought that the communication would be smooth. We specially organized all the middle-level and above cadres in the bureau to go to the village committee to broadcast the relevant CCTV programs to the villagers. I didn't expect the situation on the scene to be much different from the expectations. The villagers at the scene were mostly five or six. Ten-year-old old people, they can't listen to our explanation completely." Ye Zhuhui said.
He told reporters that in response to this situation, the Tangxia Branch specially organized a bus to take the villagers to various substations to visit and feel the working status of the substation staff. "Now the substation is not what you imagined as a vertical fence and a warning sign. Many stations have moved the equipment indoors. There is no line at all. The outdoor looks like a park. These villagers have seen the substation on the spot. Communicate with the staff of the substation and watch the electromagnetic radiation data of our field test before they let go of it." Ye Zhuhui said.
For this situation, Ding Wei, director of the Infrastructure Department of Dongguan Power Supply Bureau, suggested that the power supply department should conduct communication and guidance beforehand, such as issuing a science booklet and holding an expert forum to inform residents that electromagnetic induction is ubiquitous, but it will not affect health. For the completed substation, it can be measured with electromagnetic radiation instruments to speak and dispel doubts with scientific data. Ding also called on residents to scientifically understand substations and power supply equipment, without having to talk about "electricity" discoloration.
Is it difficult to acquire land for power grid construction?New standards for compensation for land acquisition and demolition of power grid projects are expected to be introduced
Ding Wei introduced that in view of the difficulty in land acquisition for power grid construction, it is expected to introduce new compensation standards for land acquisition and demolition. “Dongguan City announced the compensation standard for land acquisition and house demolition of public infrastructure construction projects in the No. 99 document in 2009. This standard has been used until now. In view of the current situation of rising prices, the past compensation standards are not suitable for the current situation,†Ding Wei proposed At present, there is a big difference in value in terms of compensation. The contradiction in this respect is quite prominent.
Therefore, the power supply department uses the opportunity of the power grid upgrade operation to communicate with relevant departments, and promote relevant departments to research and introduce new standards that are close to the current actual situation, and to meet the actual situation of Dongguan in accordance with relevant national regulations. A work point to be promoted.
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| 1 | JST wire harness |
| FH-----0.5mm ZH-----1.5mm | |
| SH-----1.0mm PH-----2.0mm | |
| GH-----1.25mm VH-----3.96mm | |
| EH/XH-----2.5/2.54mm | |
| 2 | Molex wire harness |
| PicoBlade-----1.25mm PicoClasp-----1.0mm | |
| PiciLock------1.0/1.5mm Minifit Jr-----4.2mm | |
| MicoBlade-----2.0mm MicoClasp-----2.0mm | |
| MicoLock-----1.25/2.0mm | |
| 3 | IDC flat ribbon cable |
| Contact material----Copper alloy | |
| Test voltage------500V AC | |
| Current rating-----1A | |
| Cable Technical Data: | |
| Contact Material----Tin plated copper | |
| Isolationswiderstand-->1000MΩ | |
| Insulation Resistance-->1000MΩ | |
| Temperature range----- -40℃.....105℃ | |
| UL Typ---------UL2651,28AWG |
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