(2) Small UnitsModel of turbine: HLD485-WJ-78Runner Diameter: 0.78mMax translation - (2) Small UnitsModel of turbine: HLD485-WJ-78Runner Diameter: 0.78mMax Lao how to say

(2) Small UnitsModel of turbine: HL


(2) Small Units
Model of turbine: HLD485-WJ-78
Runner Diameter: 0.78m
Maximum head: 67m
Rated Head: 61m
Minimum head: 60m
Rated Discharge: 4.99m3/s
Rated output: 2.69 MW
Rated speed: 750r/min
Runaway speed: 1416r/min
Efficiency at rated operating point: 91.5%
Maximum efficiency: 92%
Allowable suction height: +2.2m
Specific speed: 233m.kW
Through calculating the allowable suction heights under the working conditions of rated head, maximum head and minimum head, comprehensively considering the suction heights of the big units and the small units, simultaneously considering certain cavitations margin, it is to determine the turbine erection elevation as El. 253.85m.
1.7.2.1 Means of Grid Connection
The number of units in the HPP will be 4, the installed capacity will be 2x5,000 +2x2,500kW, the total installed capacity will be 15,000kW, and it is preliminarily proposed to be transmitted into a local substation for gird connection and operation via an 115kV line. The final gird-connection report will prevail.
1.7.2.2 primary electrical wiring
According to the hydraulic and kinetic energy parameters this HPP will be installed with 4 units the power factor will be 0.8 (lagged) and the terminal voltage of generator will 6.3kV. The HPP will be a project focusing on power generation, and the entire energy production will be uploaded to the power grid. Therefore, while designing the main wiring under the condition of reliable power supply and flexible operation, it is to purs economy and save cost.
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(2​) ຂະ​ຫນາດ​ນ້ອຍ​ຫນ່ວຍ
Model ຂອງ turbine​: HLD485​, WJ​, 78
ເສັ້ນ​ຜ່າ​ສູນ​ກາງ Runner​: 0.78m
ສູງ​ສຸດ​ຫົວ​ຫນ້າ​: 67m
ຫົວ​ຫນ້າ Rated​: 61m
ຫົວ​ຕ​່​ໍາ​: 60m
ຕັດ​ລວດ Rated​: 4.99m3 / s
ຜົນ​ຜະ​ລິດ Rated​: 269 ເມ​ກາ​ວັດ
ຄວາມ​ໄວ Rated​: 750r / min
Runaway ຄວາມ​ໄວ​: 1416r / min
ປະ​ສິດ​ທິ​ພາບ​ຢູ່​ໃນ​ຈຸດ​ປະ​ຕິ​ບັດ​ການ​ຈັດ​ອັນ​ດັບ​: 915​%
ປະ​ສິດ​ທິ​ພາບ​ສູງ​ສຸດ​: 92​%
ລະ​ດັບ​ຄວາມ​ສູງ​ດູດ​ອະ​ນຸ​ຍາດ​ໃຫ້​: + 2.2m
ຄວາມ​ໄວ​ສະ​ເພາະ​: 233m.kW
ໂດຍ​ຜ່ານ​ການ​ຄິດ​ໄລ່​ລວງ​ສູງ suction ໄດ້​ອະ​ນຸ​ຍາດ​ພາຍ​ໃຕ້​ສະ​ພາບ​ການ​ເຮັດ​ວຽກ​ຂອງ​ຫົວ​ຫນ້າ​ເສດ​ຖະ​ກິດ​, ຫົວ​ຫນ້າ​ສູງ​ສຸດ​ແລະ​ຫົວ​ຫນ້າ​ຕໍາ​່​ສຸດ​ທີ່ ການ​, ຄົບ​ຊຸດ​ພິ​ຈາ​ລະ​ນາ​ຄວາມ​ສູງ​ດູດ​ຂອງ​ຫນ່ວຍ​ງານ​ຂະ​ຫນາດ​ໃຫຍ່​ແລະ​ຫົວ​ຫນ່ວຍ​ຂະ​ຫນາດ​ນ້ອຍ​, ພ້ອມ​ກັນ​ພິ​ຈາ​ລະ​ນາ​ຂອບ​ໄຈ​ທີ່​ແນ່​ນອນ​, ມັນ​ເປັນ​ການ​ກໍາ​ນົດ​ລະ​ດັບ​ຄວາມ​ສູງ​ຕັ້ງ​ຊື່ turbine ເປັນ El​. 253.85m​.
1.7.2.1 ວິ​ທີ​ການ​ຂອງ​ການ​ເຊື່ອມ​ຕໍ່​ຕາ​ຂ່າຍ​ໄຟ​ຟ້າ
ຈ​ໍ​າ​ນວນ​ຂອງ​ຫນ່ວຍ​ງານ​ໃນ HPP ໄດ້​ຈະ​ມີ 4​, ກໍາ​ລັງ​ຕິດ​ຕັ້ງ​ຈະ​ໄດ້​ຮັບ 2x5,000 + 2x2,500kW​, ການ​ຕິດ​ຕັ້ງ​ທັງ​ຫມົດ​ຄວາມ​ສາ​ມາດ​ທີ່​ຈະ 15,000kW​, ແລະ​ມັນ​ໄດ້​ຖືກ​ສະ​ເຫນີ preliminarily ຈະ ສົ່ງ​ເຂົ້າ​ໄປ​ໃນ​ສະ​ຖາ​ນີ​ທ້ອງ​ຖິ່ນ​ສໍາ​ລັບ​ການ​ເຊື່ອມ​ຕໍ່ gird ແລະ​ການ​ດໍາ​ເນີນ​ງານ​ໂດຍ​ຜ່ານ​ເສັ້ນ 115kV ເປັນ​. ບົດ​ລາຍ​ງານ gird ການ​ເຊື່ອມ​ຕໍ່​, ການ​ສຸດ​ທ້າຍ​ຈະ​ຊະ​.
1.7.2.2 ສາຍ​ໄຟ​ຟ້າ​ຕົ້ນ​ຕໍ
ອີງ​ຕາມ​ການ​ບົບ​ໄຮ​ໂດຼ​ລິກ​ແລະ​ການ​ເຄື່ອນ​ໄຫວ​ຕົວ​ກໍາ​ນົດ​ການ​ພະ​ລັງ​ງານ HPP ນີ້​ຈະ​ໄດ້​ຮັບ​ການ​ຕິດ​ຕັ້ງ​ທີ່​ມີ 4 ຫົວ​ຫນ່ວຍ​ໄດ້​ປະ​ກອບ​ກໍາ​ລັງ​ຈະ 08 (ໄວ້​ພ້ອມ​) ແລະ​ແຮງ​ດັນ​ປາຍ​ໂດຍ​ທົ່ວ​ໄປ​ຈະ 6.3kV​. HPP ຈະ​ເປັນ​ໂຄງ​ການ​ທີ່​ສຸມ​ໃສ່​ການ​ຜະ​ລິດ​ພະ​ລັງ​ງານ​, ແລະ​ການ​ຜະ​ລິດ​ພະ​ລັງ​ງານ​ໄດ້​ທັງ​ຫມົດ​ຈະ​ໄດ້​ຮັບ​ການ​ອັບ​ໂຫຼດ​ກັບ​ຕາ​ຂ່າຍ​ໄຟ​ຟ້າ​ພະ​ລັງ​ງານ​. ເພາະ​ສະ​ນັ້ນ​, ໃນ​ຂະ​ນະ​ທີ່​ການ​ອອກ​ແບບ​ສາຍ​ຕົ້ນ​ຕໍ​ຂອງ​ການ​ພາຍ​ໃຕ້​ເງື່ອນ​ໄຂ​ຂອງ​ການ​ສະ​ຫນອງ​ພະ​ລັງ​ງານ​ທີ່​ຫນ້າ​ເຊື່ອ​ຖື​ແລະ​ການ​ດໍາ​ເນີນ​ການ​ປ່ຽນ​ແປງ​ໄດ້​, ມັນ​ແມ່ນ​ການ purse ເສດ​ຖະ​ກິດ​ແລະ​ປະ​ຢັດ​ຄ່າ​ໃຊ້​ຈ່າຍ​.
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