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Phase sequence, the problem can not be ignored


Order and reverse phase sequence and net on the power grid, power supply unit will produce significant current impact, it may burn and even cause power generators Si collapse. So. Phase sequence is ~ not a pit be neglected in order to improve the network structure. Guang'an Electric Power (Group) Company decided to Sijiu Ertan Hydropower Station, and Zhou Jia Ping switching station (1O dry-volt power supply and one side of) between the 35 volt double-circuit lines are dry breaking the construction of a l10 kV substation east. This year in August. Substation is completed, put into operation the first section of Article Ⅱ 35 kV lines, the substation is already running into the outlet line in the past, we conducted a nuclear phase, phase sequence test is positive phase sequence, the put into operation successfully,[link widoczny dla zalogowanych], a success. However, power plant put into operation to the east substation Sijiu Beach back to line 1 when measured with the phase sequence on both sides of the table is positive phase sequence, but when put into operation a great impact on the current,[link widoczny dla zalogowanych], causing network collapse. After examination, east substation, secondary wiring is correct, the last transmission line through, found Sijiu Beach power plant substation on the way to the east line to the phase A into a B-phase, B phase into a C-phase, c, ~ tl changes into the A phase; in the east Zhizhou Jiaping substation switching station and transferred back to the original line between the correct A, B, C? li. Ⅱ back with the first line exactly the same so the only pipe in the east substation is not built before the back line and just two runs without problems. But the east substation is completed, compare with the first Ⅱ back are the same secondary voltage power line, and the positive phase sequence,[link widoczny dla zalogowanych], because A, B, C phase dislocation, certainly not the Internet. Identified these issues,[link widoczny dla zalogowanych], after rectification, and put into operation a success. This example tells us that the phase sequence is simple, but we can not have the slightest bit careless. (Editor Gaocheng) {thirty-two == Lange ~ a ~\executable preferential enterprise income tax rate of 15%. Good investment, supervision. Marketing. Ensure that the power is not lost and the preservation of assets is to increase local power as the five leading industries, pillar industries and key value of the industry to cultivate and protect existing stable for the District,[link widoczny dla zalogowanych], the new digest t second is to increase the load on local power input. Loans for poverty alleviation in the local power-based t spend so give it preferential treatment; improve the local power structure of loan liabilities of the enterprise. Sixth, strengthen the lateral economic cooperation. Further expand the electricity market. Enhance the potential development of the industry; strive to build surcharges city ~ part of strengthening the link with the Guizhou Power Grid. Lack of parental transfers; promote \The power grid construction for the city. The urban power grid construction and development needs to adapt to urban power Shito Nanchuan left connected to the Fuling: Keep grid connection agreement with Chongqing, to the city electric car plan satisfied to enjoy the same A Park urban renewal plan for the partnership between Chongqing and south into the Southern Power Project Jlf center and power providers offer political spring. Taiwan Trade Center, the industrial policy to develop character and play Feng Tan advantage of a three-city resources to adapt to the market by squeezing the establishment of the electricity sales l pricing system. On the high energy consumption projects, promote the aluminum products, deep ~ JllZ, feast-line Aluminum and Power generation t expand the electricity supply market. Encourage the power consumption. Developed by industry offer electricity l debt. Seven is to seize the historical opportunity for developing the western region. Vigorously carry out small water? A Wet and Dry peak sales of electricity debts, civil preferential electricity debt, high energy consumption discount electric debt. Electricity and rural electrification optimize the power structure. Construction of peaking at the same time adjust the fees charged at the standard. Dry transfer capacity of Optimal grid structure. Improve the power grid's security \Operation level of the local power industry. Strive to create a good environment for investment in human whole Marina water column ', according to the Ministry of Finance and State Administration of Taxation rules for documentation requirements to the implementation of small rural electrification transverse electric city, multi-channel power investment tax for local value-added tax rate, after the rural power grids repayment period of the local power supply (Liu balls China )\ More articles related to topics：


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