CN86104573A - 用于直流电气铁路的供电设备 - Google Patents
用于直流电气铁路的供电设备 Download PDFInfo
- Publication number
- CN86104573A CN86104573A CN86104573.4A CN86104573A CN86104573A CN 86104573 A CN86104573 A CN 86104573A CN 86104573 A CN86104573 A CN 86104573A CN 86104573 A CN86104573 A CN 86104573A
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- Prior art keywords
- power
- diode
- supply line
- anode
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001172 regenerating effect Effects 0.000 claims description 36
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 description 32
- 238000011069 regeneration method Methods 0.000 description 32
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002939 deleterious effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0605—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two belts, e.g. Hazelett-process
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- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
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Abstract
用于直流电气铁路的供电设备包括两个二极管桥式连接电路,两个可控硅断路器,四个直流中断开关和用于双轨铁路的四条供电线。只在事故的情况中两个二极管桥式连接电路由直流开关合上而连接。万一供电线上出了故障,由断路器中断动力电流和来自变电站的备用供电电流,而不把事故影响漫延到其他供电线。如果断路器损坏,动力电流通过相互备用母线向所有的供电线供应。
Description
本发明全面地涉及一种用于直流(dc)电气铁路的供电设备,并特别涉及一种供电电源在向电气车供电之前把交流电(ac)转换成直流电(dc)的供电设备。
通常,沿铁路轨道以适当间隔安置多个直流变电站。在这些直流变电站中,安装了一台或多台转换器。转换器的直流功率输出端通过每个半导体断路器与每辆电气车的供电线相连接,转换器的交流功率输入端直接地与一个电力电容器相连接。换句话说,具有电力整流器和高速直流断路器的多个供电线路在变电站间被并联连接,这样可以构成一个直流供电设备。
另一方面,电气车供电线被分成多段,上述每一段电气车供电线通过提供用于电气车供电线的高速断路器与一个正极母线连接,而电气轨道与每个变电站的负极母线连接。
然而,在用于直流电气铁路的供电设备的已有技术中存在着各种缺点如下:(1)万一电力整流器整流失灵,由于整流失灵而产生的事故影响将会漫延。(2)一旦再生断路器(regenerative breaker)断路,所有附近的供电线将停止供电。(3)再生断路器的断开容量应该很大,这是因为必须要中断再生电流和多个备用供电电流。(4)为了减小再生断路器的断开容量,有必要在附近的变电站中断开附加的动力电流。这种操作会使防止事故的操作程序复杂化,因而降低了设备的可靠性。(5)在双轨铁路的情况下,由于要安装四台电力断路器,因而设备费用很昂贵。
在详细阐述最佳实施例时,将参照附图1对用于直流电气铁路的供电设备的先有技术作更详细的描述。
带着这些问题,本发明的主要目的在于提供一种用于直流电气铁路的新的供电设备,该设备能防止事故的有害影响,这些事故作用在设备的其他区段上或作用在附近的变电站中,从而使得在减少供电设备费用的同时保证电气车在尽可能大的范围内运行。
为了达到上述目的,根据本发明的向布置成串联并通过不通电区段的至少两根第一和第二电气车供电线(单轨铁路)供电的用于直流电气铁路的供电设备包括:(a)在动力操作中将交流电转换成直流电的电力整流器;(b)具有连接于该电力整流器的共连阴极的第一二极管桥式连接电路;(c)连接在第一二极管桥式连接电路的共连阴极和共连阳极之间的第一断路器,用于同时控制接通和切断由该电力整流器向两条电气车供电线供线的动力电流和由两条供电线中的一条向另一条供电线供给的再生电流;(d)连接在该第一二极管桥式连接电路的第一中间点和第一电气车供电线间的第一直流中断开关,用于万一事故发生在第一供电线上时中断来自该电力整流器的动力电流;(e)连接在该第一二极管桥式连接电路的第二中间点和第二电气车供电线之间的第二直流中断开关,用于万一事故发生在第二供电线上时中断来自该电力整流器的动力电流。
在双轨铁路的情况下,根据本发明的供电设备进一步包括:(a)一个第二二极管桥式连接电路,具有以与该一二极管桥式连接电路并联的方式与该电力整流器连接的共连阴极;(b)连接在该第二二极管桥式连接电路的共连阴极和共连阳极之间的第二断路器,用于同时控制接通和切断从该电力整流器分别提供给串联地通过不通电区段和与第一、第二供电线并联的第三、第四电气车供电线的动力电流,及由第三、第四供电线中的一条提供给其他供电线的再生电流;(c)连接在该第二二极管桥式连接电路的第一中间点和第三电气车供电线之间的第三直流中断开关,用于万一事故发生在第三供电线上时中断来自该电力整流器的动力电流,(d)连接在该第二二极管桥式连接电路的第二中间点和第四电气车供电线之间的第四直流中断开关,用于万一事故发生在第四供电线上时中断来自该电力整流器的动力电流;(e)连接在该第一二极管桥式连接电路的共连阳极和该第二二极管桥式连接电路的共连阳极之间的第五直流中断开关,该第五中断开关通常是被打开的,但只有当该第一和第二断路器中的任何一个出故障才合上。
在用于单轨的这个第一实施例中,产生在一条电气车供电线上的再生电流能回原到其他的电气车供电线。
在上述的设备中,万一任何一个断路器损坏,第五直流中断开关在相互备用的母线中合上从而与两个二极管桥式连接电路连接。因此,有可能保证向所有的电气车供电线供电。
万一地面故障产生在一条电气车供电线上时,只有连接于地面故障供电线的直流中断开关被打开。因此,有可能保证向除了地面故障供电线外的其他供电线供电。在这种情况下,来自附近变电站的备用动力电流也可以由打开的直流中断开关中断。
在只有一条铁路被要求停电的情况下,只有连接于该铁路的可控硅断路器被打开,而其他的可控硅保持接通。因此,可以只给其他的铁路提供备用的动力电流,而不向停电的铁路提供备用动力电流。
进而,万一事故发生在备用供电操作期间,只有连接于有故障的电气车供电线的可控硅断路器被打开。在这种情况下,由于备用动力电流同时被中断,没有必要在附近近变电站中中断备用动力电流。
在本发明的第二实施例中,并联于两个制动二极管的两个制动二极管和两个直流中断开关分别地连接在两个二极管桥式连接电路和相互备用的母线之间。因此,产生在一条电气车供电线上的再生电流也可以通过一个电力逆变器回原到供电母线上。
在本发明的第三实施例中,一个二极管串联连接电路连接在动力母线和再生母线之间,一个双路电力转换器连接于二极管串联连接电路,从而进一步提高该设备的可靠性。
根据本发明的优于先有技术的用于电气铁路的供电设备的特点和优点将通过对与本发明的最佳实施例有关的附图进行的描述而显得更加明显,图中同样的参考号标明为同样的或类似的元件或部份,其中:
图1是一个用于直流电气铁路的先有技术的供电设备的示意方框图;
图2是根据本发明的用于直流电气铁路的供电设备的第一实施例示意方框图;
图3是根据本发明的用于直流电气铁路的供电设备的第二实施例示意方框图;
图4是根据本发明的用于直流电气铁路的供电设备的第三实施例示意方框图;
为了便于本发明的理解,将对用于直流电气铁路的先有技术的供电设备参照附图作一简单描述。
图1展示了安装在每个变电站中的用于双轨铁路的先有技术的供电设备。在图中,参考号1标明为由多个用于把交流电转换成直流电的可控硅组成的电力整流器;参考号2标明为由多个用于把直流电转换成交流电的可控硅组成的电力逆变器。参考号3标明为用于直接地把电力整流器1连接于电力逆变器2的直流母线。进而,参考号4a到4d标明为动力可控硅断路器(称为动力断路器);参考号6标明为一个再生可控硅断路器(称为再生断路器);参考号5a到5d标明为再生二极管。这些再生二极管5a到5d的阳极分别地与每一个动力断路器4a到4d的阴极连接,这些再生二极管5a到5d的阴极一起连接于再生断路器6的阳极。进而,再生断路器的阴极连接于把电力整流器1连接到电力逆变器2的直流母线3。参考号8a到8d标明为直流中断开关;参考号9a和9b标明为第一和第二电气车供电线,参考号10a和10b标明为第三和第四电气车供电线。第一和第二电气车供电线9a和9b由第一不通电区段11彼此分隔开,第三和第四电气车供电线10a和10b由第二不通电区12彼此分隔开(上述不通电区段意指没有电流通过该区段)。第一和第三供电线9a和10a系为在一个区段内的双轨铁路提供,而第二和第四供电线9b和10b则为在其他邻近区段内的双轨铁路提供。
因此,电力同时从该变电站和附近的变电站(未画出)向电气车供电线供电。进而,万一电力整流器1出了故障,可以从其他的电气车供电线(例如10b)通过供电设备(例如,直流中断开关8d,再生二极管5d,再生断路器6,直流母线3,动力断路器4a,和直流中断开关8a)向一条电气车供电线(例如9a)供电。上述供电***被称之为备用供电***。
展示在图1中的先有技术的设备操作如下:为了向电气车供应一个电气车驱动电源,通过一个交流电路断路器(未画出)从一工频三相交流输电线(未画出)获得一个三相交流电压,再通过安置在变电站内的一台变压器(未画出)使降之低至一个适当的电压,通过电力整流器1把其转换成直流电源,然后向运行在第四电气车供电线10b上的电气车13供电,例如,通过动力断路器4d和直流中断开关8d。
当电气车13,例如,处于再生制动操作时,再生电力从第四电气车供电线10b通过直流中断开关8d,再生二极管5d和再生断路器6回原至直流母线3。直流母线3的回原了的再生电力供应给运行在供电线9a、9b和10a中任何一条上的动力电气车(未画出)或通过电力逆变器2向供电母线供应。
上述用于直流电气铁路的先有技术的供电设备包含以下各种问题:
(1)由于电力整流器1和电力逆变器2系以倒向并联的方式直接连接在一起,一旦电力逆变器2整流失灵,一个巨大的故障电流从电力整流器1通过电力逆变器2流向供电母线,因此而来的问题在于由电力逆变器2的整流失灵而产生的故障将漫延开去。
(2)在只有中断开关8a为维修而被要求打开的情况下,例如,这个中断开关8a应在动力断路器4a为了安全而被断开后才打开。进而,当处于再生断路操作的电气车运行在第一电气车供电线9a上时,再生断路器6也应在打开直流中断开关8a之前而被打开。一旦再生断路器6被打开,就会产生以下的问题:
(a)由于再生电流不能通过再生断路器6回原,进而备用动力电流都被中断,甚至当要求在一个所需获围内停电时,提供给其他邻近电气车供电线的电力也同时被停止供应,这样许多电气车就要停止运行。
(b)在事故情况下,当只有再生断路器6被用于中断来自其他附近变电站的再生电流和备用供电电流时,再生断路器6的中断能力在四条供电线(双轨铁路)的情况下应至少四倍于动力断路器4a、4b、4c或4d的中断能力。
(c)为了减小再生断路器6的中断能力到这样小的程度以致于能够只中断再生电流,在事故期间当再生电气车运行在任何四条供电线中的一条上时不可能由再生断路器中断备用供电电流。因此,有必要中断流入邻近变电站的事故点的备用电流,这样防止事故的操作程序被复杂化,并且也降低了***的可靠性。
(d)在双轨铁路的情况下,由于必须安置4台动力断路器4a到4d,因而变电站费用昂贵。
鉴于上述描述,现介绍根据本发明的直流电气铁路供电设备,通过举例参照附图,应用在双轨铁路在的实施例中。
在图中,对具有如与图1中以前描述过的先有技术设备同样功能的类似的元件或部份保留了相同的参考号,没有必要对他们再作详细的描述。
图2展示了本发明的第一实施例,其中再生电流只回原在电气车供电线上。与图1中所展示的先有技术的设备不同的是该设备包括两个二极管桥式连接电路21和41。第一二极管桥式连接电路21包括第一对两个串联二极管22a和22b和第二对两个串联二极管22c和22d。同样,第二二极管桥式连接电路41包括第一对两个串联二极管42a和42b和第二对两个串联二极管42c和42d。
二极管22a的阳极与二极管22b的阴极连接,同样,二极管22c的阳极与二极管22d的阴极连接。二极管22a和22c的阴极与连接于动力母线3的共连点24连接,二极管22b和22d的阳极与连接于相互备用的母线60的另一个共连点25连接。
第一可控硅断路器23(或直流高速断路器)的阳极连接于第一二极管桥式连接电路21的共连点24,断路器23的阴极连接于第一二极管桥式连接电路21的共连点25。
进而,二极管22a阳极和二极管22b阴极的连接点26通过一个直流中断开关8a连接于第一电气车供电线9a,二极管22c的阳极和二极管22d的阴极的连接点27通过一个直流中断开关8b连接于第二电气车供电线9b。
第二二极管桥式连接电路41也包括第一对两个串联二极管42a和42b和第二对串联二极管42c和42d。进而,第二可控硅断路器43连接在第二二极管桥式连接电路41中。第二二极管桥式连接电路41的二极管42a、42b、42c和42d和第二可控硅断路器43以十分相同于二极管22a到22d和第一断路器23的方法互相连接。因此,这些元件的连接方式的描述在这里就不进行了。然而,二极管42a的阳极和二极管42b的阴极的连接点46通过一个直流中断开关8c连接于第三电气车供电线10a;二极管42c的阳极和二极管42d的阴极的连接点通过一个直流中断开关8d连接于第四电气车供电线10b。
进而,另一个直流中断开关61连接在两个二极管桥式连接电路21和41的两个连接点25和45之间的相互备用母线60的中间。这个直流中断开关61在正常条件下保持打开但万一任何一个第一和第二可控硅断路器23和43出了故障就被合上。进而,在这个实施例中,尽管电力整流器1由一个二极管整流器表示,当然可以由多个可控硅去形成电力整流器1。
第一实施例的操作将作描述如下。在正常条件下,两个可控硅断23和43和四个直流中断开关8a到8d都保持接通,直流中断开关61保持打开。因此,电力整流器1的动力电流由第一可控硅断路器23和二极管22b和直流中断开关8a向第一电气供电线9a供应,同样由相同的第一中断开关可控硅断路器23、二极管22d和直流中断开关8b,即通过第一可控硅断路器23和第一二极管桥式连接电路21向第二电气车供电线9b供应。同样,电力整流器1的动力电流由第二可控硅断路器43,二极管42b和直流中断开关8c向第三电气车供电线10a供应。由第二可控硅断路器43、二极管42d和直流中断开关8d,即通过第二可控硅断路器43和第二二极管桥式连接电路41向第四电气车供电线10b供应。
进而,由运行在第一电气车供电线9a上的电气车产生的再生电流通过直流中断开关8a、二极管22a、第一可控硅断路器23、二极管22d和直流中断开关8b回原到第二电气车供电线9b上。
通过直流中断开关8a、二极管22a、动力母线3、第二可控硅断路器43、二极管42b和直流中断开关8c恢复在第三供电线10a上,或通过直流中断开关8a、二极管22a、动力母线3、第二可控硅断路器43、二极管42d和直流中断开关8d回原在第四供电线10b上。
以同样的方法,产生在第二、第三和第四供电线9b、10a和10b上的再生电流通过任何一个第一和第二可控硅断路器23和43和任何一个第一和第二二极管桥式连接电路21和41向其他的供电线供应。
在上述操作中,应注意的是只有两个动力断路器23和43控制提供至或来自四条电气车供电线9a、9b、10a和10b的动力电流和再生电流。在图1中所展示的先有技术的情况下,四台动力断路器4a到4d都被连接用于供应动力电流。由于可控硅断路器价格较高,在本实施例中有可能减少设备的费用。进而,由于动力电流和再生电流都流经第一和第二可控硅断路器23和43,有可能只打开断路器23和43同时中断动力和再生电流。这就简化了用于维修或由于事故而进行修理的操作程序。
例如,万一一次地面故障发生在第一电气车供电线9a上的F点,动力电流由打开第一可控硅断路器23而被中断。接着,直流中断开关8a被打开,然后第一可控硅断路器23再次合上。在这些条件下,甚至当再生电气车14运行在第二供电线9b上时,再生电流可通过已描述过的途径回原在第三和第四供电线10a和10b上。
进而,在单轨情况下,(第一和第二电气车供电线9a和9b)被要求在备用供电操作中停电,只有第一可控硅断路器23是打开的,而第二可控硅断路器43保持合上。在这种情况下,由于备用动力电流能被中断于第一和第二供电线9a和9b但是只能向第三和第四供电线10a和10b供应,因此电气车仍可顺利地运行在第三和第四供电线10a和10b上。
进而,万一事故发生在备用供电操作期间,只有连接于事故供电线的可控硅断路器23或43被打开。更详细地说,万一故障发生在第一供电线9a的F点上时,第一可控硅断路器23被打开,这样动力电流当然被中断。在这种情况下,尽管其他备用动力电流从附近的变电站通过第二供电线9b向第一供电线9a供应,由于这种备用动力电流由二极管22a和22d所中断,可以通过只打开第一可控硅断路器23同时中断两个动力电流。因此,没有必要中断通过在附近变电站中的第二供电线9b由附近变电站向第一供电线供应的备用动力电流。
这就简化了防止事故的操作程序,大大减小了一条事故供电线产生在其他供电线上产生的有害影响,从而提高了由电气车的操作效率和***的可靠性。
而且,万一第一可控硅断路器23出了故障,例如,连接在相互备用母线60中间的直流中断开关61被合上。在这些条件下,可以向第一和第二供电线9a和8b供应电力,该供电线9a和9b从第二可控硅断路器43通过相互备用母线60被连接于有故障的可控硅断路器23。这就提高了***的可靠性。
图3展示了本发明的第二实施例,除了参照图2描述的设备功能以外,其中进一步提供了两个制动二极管71和91和一个电力逆变器2,用以把再生电力回原到再生母线,并通过电力逆变器进一步回原到供电母线上。
在图3中,参考号71和91标明为制动二极管。制动二极管71的阳极连接于第一二极管桥式连接电路21的共连点25,制动二极管91的阳极连接于第二二极管桥式连接电路41的共连点45。两个制动二极管71和91的阴极一起连接于相互备用母线60。这一相互备用的母线通过再生母线63连接于电力逆变器2。参考号72和92标明为两个分别并联连接于制动二极管71和91的直流中断开关。这两个直流中断开关72和92在正常情况下保持打开,但当任何一个可控硅断路器23或43出故障时即保持接通。
展示在图3中的第二实施例的操作将作描述如下。以与第二实施例同样的方法,动力电流通过第一可控硅断路器23、第一二极管式连接电路21和直流中断开关8a或8b向第一和第二供电线9a和9b供应,通过第二可控硅断路器43、第二二极管桥式连接电路41和直流中断开关8c或8d向第三和第四供电线10a和10b供应。
产生在第一供电线9a上的再生电流通过直流中断开关8a、二极管22a、可控硅断路器23、二极管22d和直流中断开关8b向第二供电线9b供应,或通过直流中断开关8a、二极管22a、动力母线3、可控硅断路器43、二极管42b和直流中断开关8c向第三供电线供应,或通过直流中断开关8a、二极管22a、动力母线3、可控硅断路器43、二极管42d和直流中断开关8d向第四供电线供应,或另外通过直流中断开关8a、二极管22a、第一可控硅断路器23、制动二极管71或处于关闭时的直流中断开关72、相互备用母线60或通过中断开关8a、二极管22a、动力母线3、第二可控硅断路器43、和制动二极管91或处于关闭时的直流中断开关92向再生母线供应。进而,产生在其他第二、第三和第四供电线9b、10a和10b上的再生电流被回原至每条其他的供电线或分别通过第一或第二二极管桥式连接电路21或41或制动二极管71或91或直流中断开关72或92回原至再生母线63。
在这第二实施例中,应注意的是可以省去用在如图1展示的先有技术设备中的再生断路器6。
以与第二实施例相同的方法,由于动力电流和再生电流流经第一和第二可控硅断路器23和43,可以通过打开两个断路器23和43来中断动力和再生电流,这样用于维修的操作程序可被简化。
进而,万一一次地面故障发生在第一供电线9a的F点上时,第一可控硅断路器23被打开用于中断动力电流。因此,直流中断开关8a被打开,进而第一可控硅断路器23被再次接通。在这些条件下,甚至如果一列再生电气车14运行在第二供电线上时,其再生电流通过已经描述的途径回原至再生母线63或第三和第四供电线10a和10b。进而,在F点的地面故障中,由于第一和第二二极管桥式连接电路21和41通过两个制动二极管71和91和相互备用母线60连接在一起(当直流中断开关30和31保持打开时),一旦第一可控硅断路器23被打开,事故电流不会从第二可控硅断路器43流向第一供电线9a(因为制动二极管71以倒向连接),这样可以防止F点事故的漫延。
在备用供电操作中,第一和第二二极管桥式连接电路21和41和第一和第二可控硅断路器23和43都在运行,如果只有第一和第二供电线9a和9b被要求停电,则又有第一可控硅断路器23被打开。因此,可以向其他的第三和第四供电线10a和10b供电。进而,万一事故发生在备用供电操作期间,只要打开可控硅断路器23和43中的任何一个,这样就没必要在附近的变电站中中断备用供电电流。这简化了防止事故的操作程序并大大减小事故的有害影响并提高电气车驱动操作的效率。
进而,万一第一和第二可控硅断路器23和43中的一个出了故障,直流中断开关72和92都被闭合用于在第一和第二二极管桥式连接电路21和41之间相互提供电力,因为该设备相互备用母线型。就是,万一第一可控硅断路器23出了故障,动力电力可以通过第二可控硅断路器43、制动二极管91、相互备用母线60、直流中断开关72、二极管22d和直流中断开关8a或8b向第一和第二供电线9a和9b供应。进而来自第一和第二供电线9a和9b的再生电流能被回原至再生母线63。
图4展示了本发明的第三实施例,其中双路电力转换器被连接代替了如3所示的电力逆变器2并进一步提供了为了提高该设备的可靠性的二极管串联电路。
在图4中,参考号101标明为包括两个二极管102和103的一个二极管串联电路。二极管102的阳极通过相互备用母线60连接于两个制动二极管71和91的阴极。二极管103的阴极通过动力母线3连接于电力整流器1。进而,再生母线63连接于两个二极管102和103之间的共连点104。一个用于把交流电流转换成直流电流或把直流电流转换成交流电流的双路电力转换器100被连接于再生母线63。
下面将描述的仅仅是如图3所示的第二实施例的操作与第三实施例操作的不同之处。
当除了电力整流器1外双路电力转换器100被用作备用电力整流器,有可能减小电力整流器1的容量。进而,万一电力整流器1出了故障,有可能通过第一和第二二极管桥式连接电路21和41和第一和第二可控硅断路器23和43向所有的电气车供电线9a、9b、10a和10b供应动力电流而变电站不必停电。
进而,当双路电力转换器100作为一个电力逆变器使时,可以通过两个二极管102和103向动力母线3传输再生电流。因此,万一双路电力转换器100在电力逆变器操作期间整流失灵,有可能防止再生电流流进双路电力转换器100的一侧,即防止由于电力转换器100的整流失灵而引起的事故的漫延。
如上所述,在根据本发明用于直流电气铁路的供电设备中,有着以下各种优点:
(a)由于动力和再生电流只由两个可控硅断路器23和43控制,这就节省了与先有技术供电设备相比之下可控硅断路器的只数,因在先有技术设备中要求用四台动力断路器和一台再生断路器。因此,设备费用可以减小因为可控硅断路器非常昂贵,另外用于维修的操作程序也可以简化。
(b)由于设备为相互备用供电型,甚至如果两台可控硅断路器23和43中的一台出了故障或损坏,有可能通过无故障的可控硅断路器和相互备用母线向所有的电气车供电线供应动力电流和从那里回原再生电流。
(c)由于提供了一台直流中断开关61或两个制动二极管71和91,万一在一条电气车供电线上发生了地面故障,有可能通过只打开连接于故障供电线的可控硅断路器而去防止动力电流从无故障供电线流进故障供电线。进而,两个直流中断开关72和92分别并联连接于两个制动二极管71和91,当这两个开关被合上时,就可使相互备用供电***运行。
(d)当备用供电操作期间要求双轨铁路中的一条停电时,可控硅断路器23和43中的一个被打开。因此,可以通过其他合上的可控硅断路器继续向其他铁路供应动力电流。
(e)万一一次事故发生在备用电力供应期间,由于来自附近变电站的备用供电电流可以由连接于故障供电线的可控硅断路器中断,而没有必要在附近的变电站中中断动力电流。因此,有可能简化修理和维护的操作程序,进而大大减小在其他变电站中的事故影响。
(f)进而,在如图4所示的第三实施例的情况中,由于双路电力转换器100和二极管桥式连接电路101是附加接上的且可被用作电力整流器,而有可能减小电力整流器1的容量或万一在电力整流器1出了故障时提供动力电流,而不需在变电站中停电。
进而,当双路电力转换器100被用作电力逆变器且整流失灵时,可以中断从电力整流器1流进双路电力转换器100的故障电流或防止再生电流流进双向电力转换器100。即,可以防止双路电力转抉器的事故的漫延。
进而,当在相互备用供电操作期间提供了一个动力电流时,万一事故发生在一条供电线上,进而双路电力转换器100正被用作电力整流器,则有可能通过只打开连接于故障供电线的可控硅断路器而防止动力电流直接从双路电力转换器流进故障供电线。
(g)总之,根据本发明设备的特点和优点在于万一事故发生,有可能有效地防止事故的漫延从而提高***的可靠性,尽管事实上可控硅断路器的数目减少到只有两个。
Claims (9)
1、一种用于直流电气铁路的供电设备可向至少两条串联布置并通过一个不通电区段的电气车供电线(9a,9b)供电,该设备包括:
(a)一台用于在动力操作中把交流电源转换成直流电源的电力整流器(1);
(b)具有连接于该电力整流器的共连阴极的第一二极管桥式连接电路(21);
(c)连接在该第一二极管桥式连接电路的共连阴极和共连阳极之间的第一断路器(23),用于同时控制从该电力整流器向两条电气车供电线供应的动力电流和从两条供电线中的一条向其他供电线供应的再生电流的按通和断开;
(d)连接在该第一二极管桥式连接电路(21)的第一中间点(26)和第一电气车供电线(9a)之间的第一直流中断开关(8a),用于万一一次事故发生在第一电气车供电线(9a)上时中断来自该电力整流器的动力电流;
(e)连接在该第一二极管桥式连接电路(21)的第二中间点(27)和第二电气车供电线(9b)之间的第二直流中断开关(8b),用于万一一次事故发生在第二供电线(9b)上时中断来自该电力整器的动力电流。
2、如权利要求1所述的用于直流电气铁路的供电设备,进一步包括:
(a)具有连接于该电力整流器(1)的共连阴极并与该第一二极管桥式连接电路(21)并联的第二二极管桥式连接电路(41);
(b)连接在该第二二极管桥式连接电路的共连阴极和共连阳极之间的第二断路器(43),用于同时控制从该电力整流器向布置成串联通过不通电区段和并联与第一和第二供电线(9a,9b)的第三和第四电气车供电线(10a,10b)供应的动力电流,和从第三和第四供电线(10a,10b)中的一条向其他供电线供应的再生电流的接通和断开;
(c)连接在该第一二极管桥式连接电路(41)的第一中间点(46)和第三电气车供电线(10a)之间的第三直流中断开关(8c),用于万一事故发生在第三电气车供应电线(10a)上时中断来自该电力整流器的动力电流;
(d)连接于该第二二极管桥式连接电路(41)的第一中间点(47)和第四电气车供电线(10b)之间的第四直流中断开关(8d),用于万一事故发生在第四电气车供电线(10b)上时中断来自该电力整流器的动力电流;
(e)连接在该第一二极管桥式连接电路(21)的共连阳极(25)和该第二二极管桥式连接电路(41)的共连阳极(45)之间的第五直流中断开关(61),该第五直流中断开关(61)通常是打开的,只是在该第一和第二断路器(23,43)中的一个出了故障时才合上。
3、根据权利要求1所述的用于直流电气铁路的供电设备,进一步包括:
(a)具有连接于该电力整流器(1)的共连阴极且并联于该第一二极管桥式连接电路(71)的第二桥式连接电路(41);
(b)连接在该第二二极管桥式连接电路的共连阳极和共连阴极之间的第二断路器(43),用于同时控制从该电力整流器向分别布置成串联通过不通电区段和并联于第一和第二供电线(9a,9b)的第三和第四电气车供电线(10a,10b)供应的动力电流,和从第三和第四供电线(10a,10b)中的一条向其他供电线供应的再生电流的接通和断开;
(c)连接在该第二二极管桥式连接电路(41)的第一中间点(46)和第三电气车供电线(10a)之间的第三直流中断开关(8c),用于万一事故发生在第三供电线(10a)上时中断来自该电力整流器的动力电流;
(d)连接在该第二二极管桥式连接电路(41)的第二中间点(47)和第四电气车供电线(10b)之间的第四直流中断开关(8d),用于万一事故发生在第四供电线(10b)上时中断来自该电力整流器的动力电流;
(e)一条相互备用母线(60);
(f)连接在该第一二极管桥式连接电路(21)的共连阳极(25)和该相互备用母线(60)之间的第一制动二极管(71);
(g)连接在该第二二极管桥式连接电路(41)的共连阳极(45)和该相互备用母线(60)之间的第二制动二极管(91);
(h)并联连接于该第一制动二极管(71)的第五直流中断开关(72),该第五直流中断开关通常被打开,只有当该第一断路器(23)出了故障时才合上;
(i)并联连接于该第二制动二极管(91)的第六直流中断开关(92),该第六直流中断开关通常被打开,只有当该第二断路器(43)出了故障时才合上;
(j)连接于该相互备用母线(60)的电力逆变器(2),用于回原产生在任何电气车供电线上的再生电流。
4、根据权利要求1所述的用于直流电气铁路的供电设备,进一步包括:
(a)具有连接于该电力整流器(1)的共连阴极且并联于该第一二极管桥式连接电路(21)的第二二极管桥式连接电路(41);
(b)连接在该第二二极管桥式连接电路的共连阴极和共连阳极之间的第二断路器(43)用于同时控制从该电力整流器向分别布置成串联通过不通电区段且并联于第一和第二供电线(9a,9b)供应的动力电流,和从第三和第四供电线(10a,10b)中的一条向其他供电线供应的再生电流的接通和断路;
(c)连接在该第二二极管桥式连接电路(41)的第一中间点(46)和第三电气车供电线(10a)之间的第三直流中断开关(8c),用于万一事故发生在第三供电线(10a)上时中断来自电力整流器的动力电流;
(d)连接在该第二二极管桥式连接电路(41)的第二中间点(47)和第四电气车供电线(10b)之间的第四直流中断开关(8d),用于万一事故发生在第四供电线(10b)上时中断来自该电力整流器的动力电流;
(e)一条相互备用母线(60);
(f)连接在该第一二极管桥式连接电路(21)的共连阳极(25)和该相互备用母线(60)之间的第一制动二极管(71);
(g)连接在该第二二极管桥式连接电路(41)的共连阳极(45)和该相互备用母线(60)之间的第二制动二极管(91);
(h)并联连接于该第一制动二极管(71)的第五直流中断开关(72),该第五直流中断开关通常被打开,只有当该第一断路器(23)出了故障时才被合上;
(i)并联连接于该于第二制动二极管(91)的第六直流中断开关(92),该第六直流中断开关通常是被打开的,只有当该第二断路器(43)出了故障时才被合上;
(j)连接在该电力整流器(1)和该相互备用母线(60)之间的二极管串联连接电路(101);
(k)连接于该第一二极管串联连接电路的中间点的双路电力转换器(100),在用作电力整流器时用于向该两个二极管桥式连接电路(21,41)提供动力电流,而当用作电力逆变器时用于把再生电流回原在电气车供电线(9a,9b,10a,10b)之上。
5、根据权利要求1所述的用于直流电气铁路的供电设备,其中该第一二极管桥式连接电路包括:
(a)第一对两个第一和第二串联连接的二极管(22a,22b),一个连接于该第二二极管(22b)的阴极的该第一二极管(22a)的阳极,一个连接于该电力整流器(1)的该第一二极管(22a)的阴极;
(b)第二对两个第三和第四串联连接的二极管(22c,22d),连接于该第四二极管(22d)的阴极的该第三二极管(22c)的阳极;连接于该电力整流器(1)的该第三二极管(22c)的阴极,通常连接于该第二二极管(22b)的阳极的该第四二极管(22d)的阳极。
6、根据权利要求1所述的用于直流电气铁路的供电设备,其中该第一断路器(23)是具有一个连接于该电力整流器(1)的阳极和一个连接于该第一二极管桥式连接电路共连阳极的阴极的闸门电路断开可控硅。
7、根据权利要求1所述的用于直流电气铁路的供电设备,其中该第二二极管桥式连接电路(41)包括:
(a)第一对两个第一和第二串联连接二极管(42a,42b),连接于该第二二极管(42b)的阴极的该第一二极管(42a)的阳极,连接于该电力整流器(1)第一二极管(42a)的阴极;
(b)第二对两个第三和第四串联连接的二极管(42c,42d),连接于该第四二极管(42d)的阴极的该第三二极管(42c)的阳极,连接该电力整流器(1)的该第三二极管(42c)的阴极,通过连接于该第二二极管(42b)的阳极的该第四二极管(42d)的阳极。
8、根据权利要求1所述的用于直流电气铁路的供电设备,其中该第二断路器(43)是一个具有连接于该电力整流器(1)阳极和连接于该第二二极管桥连接电路共连接阳极的一个阴极的闸门电路断开可控硅。
9、根据权利要求1所述的用于直流电气铁路的供电设备,其中该二极管串联连接电路(101)包括:
(a)具有一个连接于该相互备用母线的阳极和连接于该双路电力转换器(100)的阴极的第一二极管(102);
(b)具有一个连接于该第一二极管(102)的阴极的一个阳极和连接于该电力整流器(1)的一个阴极的第二二极管(103)。
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60153698A JPS6215140A (ja) | 1985-07-12 | 1985-07-12 | 直流給電装置 |
JP153698/85 | 1985-07-12 | ||
JP60158699A JPS6218339A (ja) | 1985-07-18 | 1985-07-18 | 直流給電装置 |
JP15870585A JPH0688512B2 (ja) | 1985-07-18 | 1985-07-18 | 直流給電装置 |
JP158705/85 | 1985-07-18 | ||
JP158699/85 | 1985-07-18 |
Publications (2)
Publication Number | Publication Date |
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CN86104573A true CN86104573A (zh) | 1987-01-14 |
CN1007507B CN1007507B (zh) | 1990-04-11 |
Family
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Application Number | Title | Priority Date | Filing Date |
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CN86101664A Expired CN1007507B (zh) | 1985-07-12 | 1986-07-12 | 用于直流电气铁路的供电设备 |
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Country | Link |
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US (1) | US4731723A (zh) |
EP (1) | EP0209087B1 (zh) |
KR (1) | KR960001555B1 (zh) |
CN (1) | CN1007507B (zh) |
DE (1) | DE3688347T2 (zh) |
HK (1) | HK142393A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101282855B (zh) * | 2005-10-12 | 2010-08-18 | 株式会社明电舍 | 直流电气轨道的电力存储单元 |
CN114981143A (zh) * | 2019-12-27 | 2022-08-30 | 阿罗姆运输***有限公司 | 用于气动输送***的分段隔离阀 |
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DE3941885A1 (de) * | 1989-12-19 | 1991-06-20 | Philips Patentverwaltung | Stromversorgungseinrichtung mit unsymmetrieueberwachungsschaltung |
US5280418A (en) * | 1990-11-11 | 1994-01-18 | Griffin Anthony J | Voltage regulation in a railway power distribution system |
DE4104384A1 (de) * | 1991-02-11 | 1992-08-13 | Elpro Ag | Verfahren und schaltungsanordnung zum betrieb eines gleichrichter-unterwerkes |
DE4106054C2 (de) * | 1991-02-22 | 1996-05-15 | Elpro Ag | Schaltungsanordnung zur Gleichstromversorgung in Gleichrichter-Unterwerken |
WO1993002890A1 (de) * | 1991-08-09 | 1993-02-18 | Elpro Ag Berlin-Industrieelektronik Und Anlagenbau- | Schaltungsanordnung für ein gleichrichter-unterwerk |
AU2432701A (en) * | 1999-12-16 | 2001-06-25 | Mcandrews Enterprises Inc. | Spare bus power plant |
US7277782B2 (en) * | 2001-01-31 | 2007-10-02 | Oshkosh Truck Corporation | Control system and method for electric vehicle |
AT500328B1 (de) * | 2002-02-07 | 2010-03-15 | Elin Ebg Traction Gmbh | Fahrzeug mit einem elektrischen antrieb und verfahren zum betrieb eines solchen fahrzeuges |
TWI339930B (en) * | 2007-03-28 | 2011-04-01 | Delta Electronics Inc | Energy recycle system for use with ac current power supply |
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DE1956527C3 (de) * | 1969-11-11 | 1973-01-04 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Differentialschutzeinrichtung |
FR2474784A1 (fr) * | 1979-12-20 | 1981-07-31 | Alsthom Atlantique | Dispositif electronique de commande d'une machine a courant continu a excitation separee |
US4480298A (en) * | 1983-01-25 | 1984-10-30 | Westinghouse Electric Corp. | Multiple output DC-to-DC voltage converter apparatus |
JPS6033133A (ja) * | 1983-07-30 | 1985-02-20 | Meidensha Electric Mfg Co Ltd | 電気鉄道用き電区分装置 |
JPS6082452A (ja) * | 1983-10-13 | 1985-05-10 | Meidensha Electric Mfg Co Ltd | 電気鉄道用き電区分装置 |
US4600982A (en) * | 1984-02-22 | 1986-07-15 | Rolm Corporation | Low power consuming AC to DC converter |
-
1986
- 1986-07-10 US US06/883,998 patent/US4731723A/en not_active Expired - Fee Related
- 1986-07-11 DE DE8686109492T patent/DE3688347T2/de not_active Expired - Fee Related
- 1986-07-11 EP EP86109492A patent/EP0209087B1/en not_active Expired - Lifetime
- 1986-07-11 KR KR1019860005593A patent/KR960001555B1/ko not_active IP Right Cessation
- 1986-07-12 CN CN86101664A patent/CN1007507B/zh not_active Expired
-
1993
- 1993-12-30 HK HK1423/93A patent/HK142393A/xx unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101282855B (zh) * | 2005-10-12 | 2010-08-18 | 株式会社明电舍 | 直流电气轨道的电力存储单元 |
CN114981143A (zh) * | 2019-12-27 | 2022-08-30 | 阿罗姆运输***有限公司 | 用于气动输送***的分段隔离阀 |
CN114981143B (zh) * | 2019-12-27 | 2024-07-09 | 阿罗姆运输***有限公司 | 用于气动输送***的分段隔离阀 |
Also Published As
Publication number | Publication date |
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DE3688347T2 (de) | 1993-08-05 |
EP0209087B1 (en) | 1993-04-28 |
HK142393A (en) | 1994-01-07 |
EP0209087A2 (en) | 1987-01-21 |
US4731723A (en) | 1988-03-15 |
KR870001699A (ko) | 1987-03-17 |
DE3688347D1 (de) | 1993-06-03 |
EP0209087A3 (en) | 1988-02-10 |
CN1007507B (zh) | 1990-04-11 |
KR960001555B1 (ko) | 1996-02-02 |
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