The invention discloses an electrified railway traction power supply system harmonic wave limit value correction method, which comprises the following steps: firstly, constructing a two-port network model for harmonic wave propagation through a line, and then constructing a locomotive harmonic wave model according to a load harmonic wave equivalent model and the difference of locomotive load capacity, voltage grade and power factor; all parameters are converted to the high-voltage side of the traction transformer; calculating the harmonic voltage generated by the traction station side and the harmonic voltage generated by the power grid side after the harmonic current is injected into the traction station side and the ratio of the harmonic voltage and the harmonic voltage, and calculating the harmonic current of the power grid side according to a two-port network model of harmonic propagation through a line; and finally, according to the power grid side harmonic current, calculating an amplification factor of the power grid side output harmonic current compared with the traction station side input harmonic current, and according to the amplification factor, calculating a national standard correction harmonic limit value. According to the traction station side harmonic limit value correction method, the line traction station side harmonic limit value standard is corrected, and it is guaranteed that the power grid side output harmonic current meets the harmonic national standard limit value.
本发明公开了一种电气化铁路牵引供电系统谐波限值更正方法,首先构建谐波经线路传播的二端口网络模型,然后根据负荷谐波等值模型以及机车负荷容量、电压等级、及功率因数的差异,搭建机车谐波模型,并将所有参数折算到牵引变压器高压侧;在计算当牵引站侧注入谐波电流后牵引站侧所产生的谐波电压和电网侧产生的谐波电压,以及二者的比值,再根据谐波经线路传播的二端口网络模型,计算电网侧谐波电流;最后根据电网侧谐波电流,计算电网侧输出谐波电流相较于牵引站侧输入谐波电流的放大倍数,根据所述放大倍数计算国标修正谐波限值。本发明给出牵引站侧谐波限值修正方法,更正线路牵引站侧谐波限值标准,保证电网侧输出谐波电流满足谐波国标限值。
Method for correcting harmonic limit value of traction power supply system of electrified railway
一种电气化铁路牵引供电系统谐波限值更正方法
2023-01-06
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
Power supply harmonic treatment device for traction substation of electrified railway
European Patent Office | 2020
|10kV/27.5 kV electrified railway auxiliary traction power supply
European Patent Office | 2020
|Electrified railway traction power supply section post power fusion device
European Patent Office | 2022
|