2.8.3. Phân tích tính khả thi đối v

2.8.3. feasibility analysis for the use of Super capacitance resistor replacement ship keeps levelInfrastructure Advisory reminding, though using capacitance, resistor keeps the train still necessary, indispensable, particularly to the downgrade method below:-Super capacitance level takes effect-Super capacitance level full load during the period of keeping of shipsIn the case below, Super capacitance level could not absorb the excess electricity, therefore, the electricity will be removed through the following methods:-Joule effect through the resistor's ship. To optimization of ship resistance capacity, weight and size, resistor keeps selected ships only to absorb excess power in case of a downgrade.In normal circumstances, the amount of Super capacitance level can absorb a total of surplus electricity of the whole period of keeping the ship, from which avoid excess power being destroyed through resistors keep the train due to the Joule effect.-Through traction substation can go backwards. That this approach should use electricity, will arise the price (adds a line parallel with the IGBT variable transformers line of transformers, to increase links with high-voltage grid of Taiwan power company along the green line Train, due to the route passing through the city area range the submarine, which will result in certain restrictions with regard to the selection of substation infrastructure) (away from the location of electrical consumption), the reasonableness of this approach have to wait. Also, if the use of substation drag can go backwards, the excess is absorbed power will return to the grid of the Taiwan power company. Which, at present still not determine đượccông the Taiwan power company has accepted this approach, especially in the case of loss of traction substation work, but need to keep resistance.

2.8.3. Analyze the feasibility for the use of alternative super capacitance resistors hold ship
Adviser reminded infrastructure, whether to use Express capacitive, resistive maintained ships still necessary, indispensable, especially to take into account the following downgrade method:
capacitance lapse super
super full load capacitance in the period kept the ship
in the following circumstances, the capacitance can not absorb super power excess capacity, therefore, the electric power will be eliminated through the following methods:
A thorough Joule effect of resistance kept the ship. For optimization of power resistors hold ship, vessel weight and size, resistors hold the selected ship just consider absorbing excess power in the event of downgrading.
In normal circumstances, the capacity super level of capacitance can absorb the whole sum of the excess power of stage holding vessel, thereby avoiding excess power is destroyed through resistor keep the ship by Joule effect.
A thorough station pull transformer can go backwards. But this option should use super capacitance, will incur costs (add an IGBT inverter line parallel to the line of the substation transformer, to increase links with high-voltage grid of electric company Taiwan forces along the green route Taoyuan, it made ​​its way through the area, the city, where the underground will cause certain restrictions on the choice of substation infrastructure) (distant place Power consumption point), so the rationality of this approach remains to be determined. Also, if using substation scissors can go backwards, excess power is absorbed will return to the grid of the power company in Taiwan. Which currently remains unknown duoccong Taiwan Power Company has not accepted this plan, especially in the case of the substation scissors useless, but necessary resistor for preventing ship hold.