WO2019096039A1 - 一种调车机车及其高压安全联锁系统与方法 - Google Patents

一种调车机车及其高压安全联锁系统与方法 Download PDF

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Publication number
WO2019096039A1
WO2019096039A1 PCT/CN2018/114302 CN2018114302W WO2019096039A1 WO 2019096039 A1 WO2019096039 A1 WO 2019096039A1 CN 2018114302 W CN2018114302 W CN 2018114302W WO 2019096039 A1 WO2019096039 A1 WO 2019096039A1
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Prior art keywords
key
door lock
high voltage
grounding switch
switch key
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PCT/CN2018/114302
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English (en)
French (fr)
Inventor
王位
张树勋
彭新平
刘世杰
谭本旭
顾新东
张鹏
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中车株洲电力机车有限公司
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Priority to DE112018005865.4T priority Critical patent/DE112018005865T5/de
Publication of WO2019096039A1 publication Critical patent/WO2019096039A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/53—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells in combination with an external power supply, e.g. from overhead contact lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to the technical field of shunting locomotives, in particular to a shunting locomotive and a high-voltage safety interlocking system and method thereof.
  • electric locomotives and EMUs are equipped with safety interlock protection systems according to their power supply systems, but they are high-voltage safety interlocks for AC contact network power supply systems. Since electric locomotives and power units do not have on-board energy storage power units, There is no high-voltage safety interlock for the on-board energy storage power supply system.
  • the power supply system of the dual-source power shunting locomotive integrates the high-voltage DC vehicle-mounted energy storage power supply system based on the UHV AC contact network power supply system.
  • the power supply system can include AC (AC) 25 kV (kV), AC380V, AC230V. , DC (DC) 750V, DC110V and other voltage levels, once the human body touches these charged bodies, it will bring harm to the human body, even if the human body is slightly shocked, the body tissue burns and even death.
  • AC AC
  • DC DC 750V
  • DC110V DC110V
  • Electric locomotives and EMUs have a safety interlock protection system according to their power supply system.
  • a safety interlock protection system according to their power supply system.
  • Protection that is, the high-voltage safety interlock system of electric locomotives and EMUs is not suitable for dual-source power shunting locomotives; therefore, it is necessary to improve this.
  • the object of the present invention is to provide a shunting locomotive and a high-voltage safety interlocking system and method thereof, which can solve the ultra-high voltage AC contact network power supply and the high-voltage DC vehicle energy storage power supply system of the dual-source or multi-source power supply shunting locomotive.
  • the safety interlock problem ensures the personal safety of the staff during daily operation and maintenance, and prevents high-voltage electric shock events.
  • the present invention provides a high-pressure safety interlock system for a shunting locomotive, including a first interlocking key box, a high-voltage grounding switch, a vehicle energy storage unit disconnecting switch, a second interlocking key box, and a device door.
  • a lock the device door lock is opened and closed by a device key;
  • An air path handle for connecting or disconnecting the wind source of the shunting locomotive is disposed in the first interlocking key box, and the first interlocking key box is externally disposed to lock the air path handle to the first The grounding switch key of the interlocking key box;
  • the high voltage grounding switch has a grounding switch keyhole for inserting the grounding switch key, and the high voltage grounding switch can be turned on to achieve grounding when the grounding switch key is inserted into the grounding switch keyhole;
  • the high voltage grounding switch is further coupled to a high voltage grounding switch key for locking the high voltage grounding switch to the open and unlocked positions;
  • the vehicle-mounted energy storage unit isolation switch is connected with an isolating switch key for locking the vehicle-mounted energy storage unit isolation switch to an open and unlock position;
  • the second interlocking key box has a first interlocking keyhole for inserting the high voltage grounding switch key and the disconnector key, and a second interlocking keyhole for inserting the device key
  • the high voltage grounding switch key and the disconnector key cannot be pulled out of the first interlocking keyhole when the device key is pulled out of the second interlocking keyhole.
  • the device door lock comprises a main auxiliary converter door lock, a high voltage cabinet door lock, a mechanical door lock and a roof entrance door lock.
  • the number of the main auxiliary converter door lock and the high voltage cabinet door lock is two.
  • the high-voltage grounding switch is installed on one side of the main circuit breaker for the ultra-high voltage AC power supply system of the shunting locomotive, and is connected to the two ends of the main circuit breaker of the ultra-high voltage AC power supply system through a contact knife to realize The two ends of the main circuit breaker of the ultra high voltage AC power supply system are grounded.
  • the number of the high-voltage grounding switch keys is two, and the number of the isolating switch keys is four.
  • the present invention also provides a shunting locomotive comprising the high pressure safety interlock system of any of the above.
  • the invention also provides a high-pressure safety interlocking method for a shunting locomotive, comprising:
  • the pneumatic handle is driven by the grounding switch key to lock the interlocking device in the first interlocking key box;
  • the device key When the device key opens the device door lock, the device key is locked to the device door lock and cannot be taken out.
  • the removing the device key, the isolating switch key and the high voltage grounding switch key are locked in the second interlocking key box, specifically:
  • the high-voltage safety interlocking system of the shunting locomotive adopts the first interlocking key box to safely ground the safety ground of the ultra-high voltage AC contact network power supply circuit and the high-voltage circuit of the vehicle, and adopts the second interlocking
  • the key box safely isolates the high-voltage circuit of the high-voltage DC vehicle energy storage unit.
  • the high-voltage safety interlock system of the dual-source power shunting locomotive has the functions of perfect function, wide protection range, safety and reliability. It can fundamentally ensure the personal safety of the passengers and maintenance personnel of the shunting locomotive.
  • FIG. 1 is a schematic diagram of the principle of a shunting locomotive and a high-pressure safety interlocking system thereof according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of the principle of a shunting locomotive and a high-pressure safety interlocking system thereof according to an embodiment of the present invention.
  • the invention provides a high-pressure safety interlock system for a shunting locomotive, which mainly comprises a first interlocking key box 15, a high-voltage grounding switch 17, an on-board energy storage unit disconnecting switch 16, a second interlocking key box 18 and a device.
  • the door lock, the device door lock is opened and closed by the device key.
  • the device door lock may include a main auxiliary converter door lock, a high voltage cabinet door lock, a mechanical door lock and a roof entrance door lock
  • the main and auxiliary converter door locks may be the main auxiliary converter door lock 1 and the main Auxiliary converter door lock 2.
  • the main and auxiliary converter door locks 1 are opened and closed by the first main and auxiliary converter door lock keys 9, and the main and auxiliary converter door locks 2 are passed through the second main and auxiliary converter door lock keys 10
  • the high voltage cabinet door lock 1 is opened and closed by the first high voltage cabinet door lock key 11
  • the high voltage cabinet door lock 2 is opened and closed by the second high voltage cabinet door lock key 12
  • the mechanical door lock 1 is passed through the machine.
  • the door lock key 13 is opened and closed
  • the roof entrance door lock is opened and closed by the roof entrance door lock key 14.
  • the first interlocking key box 15 is provided with an air passage handle 1 for connecting or disconnecting the windshield locomotive wind source.
  • the first interlocking key box 15 is further provided with a grounding switch key 2, and the high voltage grounding switch 17 includes a grounding switch key. a hole for inserting the grounding switch key 2; and when the grounding switch key 2 is inserted into the grounding switch keyhole, the high voltage grounding switch 17 can be turned on to achieve grounding; the high voltage grounding switch 17 also has a high voltage grounding switch key, including the first high voltage Grounding switch key 3 and second high voltage grounding switch key 4.
  • the vehicle energy storage unit disconnecting switch 16 has an isolating switch key, including a first isolating switch key 5, a second isolating switch key 6, a third isolating switch key 7, and a fourth isolating switch key 8.
  • the second interlocking key box 18 has a first interlocking keyhole and a second interlocking keyhole, the first interlocking keyhole being capable of inserting a high voltage grounding switch key and a disconnecting switch key, and the second interlocking keyhole being capable of providing a device key Inserted, and when the device key is removed from the second interlocking keyhole, the high voltage grounding switch key and the disconnector key cannot be removed from the first interlocking keyhole.
  • the first interlocking key box 15 has a grounding switch key 2, an air path handle 1, and a safety interlock signal feedback is provided in the first interlocking key box 15, and the first interlocking key box 15 can be outwardly
  • the "allow" signal is given, and the air inlet of the first interlocking key box 15 is connected to the wind source of the shunting locomotive, and the air outlet of the first interlocking key box 15 is connected to the air supply line of the pantograph of the shunting locomotive.
  • the airway handle 1 of the first interlocking key box 15 is in the "1 position" to open the airway, and sends a permission to raise the bow signal to the shunting locomotive control system.
  • the high-voltage grounding switch 17 is installed beside the main circuit breaker for the ultra-high voltage AC power supply system of the shunting locomotive, and can be connected to both ends of the main circuit breaker by the contact knife and the ultra-high voltage AC power supply system, so that the UHV AC power supply system is used by the main Both ends of the circuit breaker are grounded.
  • the vehicle energy storage unit isolating switch 16 is installed together with the vehicle energy storage unit, and the key of the vehicle energy storage unit isolating switch 16 can be taken out only when the vehicle energy storage unit is correctly isolated from the main circuit of the vehicle locating vehicle (ie, the first isolation)
  • the switch key 5, the second disconnector key 6, the third disconnector key 7 and the fourth disconnector key 8 can be taken out).
  • the second interlocking key box 18 has a first interlocking keyhole and a second interlocking keyhole, the first interlocking keyhole and the second interlocking keyhole are two rows side by side as shown in FIG. 1 of the specification;
  • the lock keyhole can be inserted into the first disconnector key 5, the second disconnector key 6, the third disconnector key 7, the fourth disconnector key 8, the first high voltage grounding switch key 3 and the second high voltage grounding switch key 4,
  • the second interlocking keyhole can be provided for the first main auxiliary converter door lock key 9, the second main auxiliary converter door lock key 10, the first high voltage cabinet door lock key 11, the second high voltage cabinet door lock key 12, The mechanical door lock key 13 and the roof entry door lock key 14 are inserted.
  • the first isolating switch key 5, the second isolating switch key 6, the third isolating switch key 7, the fourth isolating switch key 8, the first high voltage grounding switch key 3 and the second high voltage grounding switch key 4 are the same type Mutual common key, first main and auxiliary converter door lock key 9, second main and auxiliary converter door lock key 10, first high voltage cabinet door lock key 11, second high voltage cabinet door lock key 12, mechanical door
  • the lock key 13 and the roof entry door lock key 14 are the same type of key that can be used interchangeably.
  • the grounding switch key 2, the first high voltage grounding switch key 3, and the first main and auxiliary converter door lock keys 9 are different keys.
  • the safety interlocks corresponding to the second interlocking key box 18 are respectively mounted on the doors of various high-voltage devices, and can only be opened by the device key in the second interlocking key box 18, and the device key is opened after the door is opened.
  • the lock that is locked on the door cannot be removed, and the device key can be removed only after the door is accessed.
  • the top entry door lock key 14 is in the second interlock key box 1 and inserted in the second interlock key hole;
  • the first isolating switch key 5, the second isolating switch key 6, the third isolating switch key 7, and the fourth isolating switch key 8 are respectively disposed on the four vehicle energy storage unit isolation switches;
  • the first high voltage grounding switch key 3 and the second high voltage grounding switch key 4 are inserted in the high voltage grounding switch 17, and the grounding switch key 2 is in the first interlocking key case 15.
  • the shunting locomotive with the high-pressure safety interlocking system provided by the present invention includes the high-pressure safety interlocking system described in the above specific embodiment; the other parts of the shunting locomotive can refer to the prior art, and will not be developed herein.
  • the invention also provides a high-pressure safety interlocking method for a shunting locomotive, which mainly comprises:
  • the air circuit handle 1 is driven by the grounding switch key 2 to lock the interlocking device in the first interlocking key box 15;
  • the device key When the device key opens the device door lock, the device key is locked to the device door lock and cannot be taken out.
  • the device key is taken out, and the isolating switch key and the high-voltage grounding switch key are locked in the second interlocking key box 18, specifically:
  • the door entry door lock key 14 is any one of the six keys, and the disconnector key and the high voltage grounding switch key are locked in the second interlocking key case 18.
  • the door of each device is closed, and the key is removed from the device door lock: the first main and auxiliary converter door lock key 9, the second main and auxiliary converter door lock key 10, the first high voltage cabinet door lock key 11, The second high voltage cabinet door lock key 12, the mechanical door lock key 13 and the roof entrance door lock key 14 are removed;
  • the first main and auxiliary converter door lock key 9, the second main and auxiliary converter door lock key 10, the first high voltage cabinet door lock key 11, the second high voltage cabinet door lock key 12, the mechanical door lock key 13 and the roof entrance door lock key 14 is inserted back into the second interlocking keyhole of the second interlocking key box 18, and the above six keys are all rotated to the "1" position, at which time the first interlock can be Removing the first isolating switch key 5, the second isolating switch key 6, the third isolating switch key 7, the fourth isolating switch key 8, the first high voltage grounding switch key 3 and the second high voltage grounding switch key 4;
  • the first isolating switch key 5, the second isolating switch key 6, the third isolating switch key 7, the fourth isolating switch key 8, the first high voltage grounding switch key 3 and the second high voltage grounding switch key 4 are sequentially rotated to " 1" position and take out, at this time, the first main and auxiliary converter door lock key 9, the second main and auxiliary converter door lock key 10, the first high voltage cabinet door lock key 11, the second high voltage cabinet door lock key 12 , the mechanical door lock key 13 and the roof entrance door lock key 14 are interlocked in the second interlocking key hole of the second interlocking key box 18;
  • the first isolating switch key 5, the second isolating switch key 6, the third isolating switch key 7 and the fourth isolating switch key 8 are sequentially inserted into the four vehicle energy storage unit isolating switches 16 and rotated to the "1" position. Controlling the operation handle of the vehicle energy storage unit isolation switch 16 to the "ON" position, at which time the vehicle energy storage unit is connected to the main circuit, and the first isolation switch key 5, the second isolation switch key 6, and the third isolation switch key 7 and the fourth isolation switch key 8 are locked on the vehicle energy storage unit isolation switch 16;
  • the first high voltage grounding switch key 3 and the second high voltage grounding switch key 4 are sequentially inserted into the high voltage grounding switch 17, and the first high voltage grounding switch key 3 and the second high voltage grounding switch key 4 are rotated, and then the high voltage grounding switch 17 is rotated.
  • the operating handle is in the "running" position, at which time the first high voltage grounding switch key 3 and the second high voltage grounding switch key 4 are locked on the high voltage grounding switch 17; the primary side of the roofing device and the traction transformer are in an ungrounded state;
  • grounding switch key 2 is inserted into the first interlocking key case 15 and rotated to the "1" position, and the airway handle 1 is rotated to the "1" position, at which time the grounding switch key 2 is locked to the first interlocking key.
  • the raising of the bow allows the signal to be turned on, and the air path to the pantograph is turned on.
  • the “0” bit in this document refers to the disconnection bit
  • “1” refers to the connected bit
  • the “ON” position refers to the start bit
  • the “OFF” position refers to the closed bit

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Abstract

一种用于调车机车的高压安全联锁系统，包括第一联锁钥匙箱（15）、高压接地开关（17）、车载储能单元隔离开关（16）、第二联锁钥匙箱（18）和设备门锁，所述设备门锁通过设备钥匙开启与关闭。还公开了一种包括上述高压安全联锁系统的调车机车以及一种用于调车机车的高压安全联锁方法。该高压安全联锁系统，确保在日常运用和检修保养时工作人员的人身安全，防止高压触电事件的发生。

Description

一种调车机车及其高压安全联锁系统与方法 技术领域
本发明涉及调车机车技术领域，特别涉及一种调车机车及其高压安全联锁系统与方法。
背景技术
目前，电力机车和动车组根据其供电系统设置有安全联锁保护系统，但均是对交流接触网供电系统的高压安全联锁，由于电力机车和动力组并没有车载储能动力单元，也就没有涉及对车载储能动力供电系统的高压安全联锁。
双源制电力调车机车的供电系统在超高压交流接触网供电系统基础上整合了高压直流车载储能动力供电系统，其供电系统可包括交流(AC)25千伏(kV)、AC380V、AC230V、直流(DC)750V、DC110V等电压等级，一旦人身触及到这些带电体，将会给人身带来伤害，轻则人身轻微电击，重则会出现人体组织灼伤，甚至死亡。在调车机车的设计与运用过程中需要对这些电压等级的供电系统进行安全联锁保护，以防止由于误操作供电系统的开关或误接近带电部件而造成的人身触电事故。
电力机车和动车组根据其供电系统设置了安全联锁保护系统，但由于其供电系统中不存在高压直流车载储能动力供电系统，并不涉及针对高压直流车载储能动力供电系统的安全联锁保护，也即电力机车和动车组的高压安全联锁系统并不适用于双源制电力调车机车；因此，很有必要对此加以改进。
发明内容
本发明的目的是提供一种调车机车及其高压安全联锁系统与方法，可以解决双源或多源供电的电力调车机车的超高压交流接触网供电和高压直流车载储能动力供电系统的安全联锁问题，确保在日常运用和检修保养时工作人员的人身安全，防止高压触电事件的发生。
为实现上述目的，本发明提供一种用于调车机车的高压安全联锁系统，包括第一联锁钥匙箱、高压接地开关、车载储能单元隔离开关、第二联锁钥匙箱和设 备门锁，所述设备门锁通过设备钥匙开启与关闭；
所述第一联锁钥匙箱内设有用以连通或断开调车机车风源的气路手柄，所述第一联锁钥匙箱外设有用以将所述气路手柄锁于所述第一联锁钥匙箱的接地开关钥匙；
所述高压接地开关具有用以供所述接地开关钥匙插入的接地开关钥匙孔，当所述接地开关钥匙插入所述接地开关钥匙孔中时，所述高压接地开关能够开启以实现接地；所述高压接地开关还连接有用以将所述高压接地开关锁定于开启和解锁位置的高压接地开关钥匙；
所述车载储能单元隔离开关连接有用以将所述车载储能单元隔离开关锁定于开启和解锁位置的隔离开关钥匙；
所述第二联锁钥匙箱具有用以供所述高压接地开关钥匙和所述隔离开关钥匙插入的第一互锁钥匙孔，还包括用以供所述设备钥匙插入的第二互锁钥匙孔，当所述设备钥匙从所述第二互锁钥匙孔中拔出时，所述高压接地开关钥匙和所述隔离开关钥匙无法从所述第一互锁钥匙孔中拔出。
优选地，所述设备门锁包括主辅变流器门锁、高压柜门锁、机械间门锁和车顶入口门锁。
优选地，所述主辅变流器门锁和所述高压柜门锁的个数均为两个。
优选地，所述高压接地开关安装于调车机车的超高压交流供电系统用主断路器的一侧，且通过触刀与所述超高压交流供电系统用主断路器的两端相连，以实现所述超高压交流供电系统用主断路器的两端接地。
优选地，所述高压接地开关钥匙的个数为两个，且所述隔离开关钥匙的个数为四个。
本发明还提供一种调车机车，包括如上述任意一项所述的高压安全联锁系统。
本发明还提供一种用于调车机车的高压安全联锁方法，包括：
将第一联锁钥匙箱上的气路手柄转至隔离位，允许升弓信号断开，且调车机车的空气管路关断并将通往受电弓气路中的压缩空气排向大气；
转动并取出接地开关钥匙，所述气路手柄被接地开关钥匙带动联锁装置而锁在所述第一联锁钥匙箱中；
将取出的所述接地开关钥匙插入高压接地开关的接地开关钥匙孔中，转动所述高压接地开关的操作手柄到接地位，插入所述高压接地开关的所述接地开关钥匙被锁在所述高压接地开关上；
转动并取出位于所述高压接地开关的高压接地开关钥匙，此时所述高压接地开关的操作手柄被锁定在接地位，车顶设备和主变压器的原边处于接地状态；
确认隔离开关钥匙在“0”位置，并操作车载储能单元隔离开关的操作手柄到“OFF”位置，然后转动所述隔离开关钥匙到“1”位置并取出；
将所述高压接地开关钥匙以及取出的所述隔离开关钥匙插入到第二联锁钥匙箱的第一互锁钥匙孔，然后将所述隔离开关钥匙和所述高压接地开关钥匙全部转动至“0”位置，解除对设备门锁的锁止，此时可以取出插入于所述第二联锁钥匙箱的第二互锁钥匙孔的设备钥匙，并利用所述设备钥匙开启所述设备门锁；
取出所述设备钥匙，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱中；
当所述设备钥匙开启所述设备门锁时，所述设备钥匙锁定于所述设备门锁，无法取出。
优选地，所述取出所述设备钥匙，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱中具体为：
取出两把主辅变流器门锁钥匙、两把高压柜门锁钥匙、机械间门锁钥匙和车顶入口门锁钥匙六把钥匙中的任意一把，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱中。
相对于上述背景技术，本发明提供的调车机车的高压安全联锁系统，采用第一联锁钥匙箱将超高压交流接触网供电回路安全接地及车内高压回路安全接地，采用第二联锁钥匙箱将高压直流车载储能单元高压回路安全隔离，通过钥匙的各级互锁关系，令双源制电力调车机车的高压安全联锁系统具有功能完善、保护范围宽，安全可靠的特点，能从根本上确保调车机车司乘人员和维保人员的人身安全。也即解决了双源或多源供电的电力调车机车的超高压交流接触网供电和高压直流车载储能动力供电系统的安全联锁问题，确保在日常运用和检修保养时工作人员的人身安全，防止高压触电事件的发生。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本发明实施例所提供的调车机车及其高压安全联锁系统的原理示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
为了使本技术领域的技术人员更好地理解本发明方案，下面结合附图和具体实施方式对本发明作进一步的详细说明。
请参考图1，图1为本发明实施例所提供的调车机车及其高压安全联锁系统的原理示意图。
本发明提供了一种用于调车机车的高压安全联锁系统，主要包括第一联锁钥匙箱15、高压接地开关17、车载储能单元隔离开关16、第二联锁钥匙箱18和设备门锁，设备门锁通过设备钥匙开启与关闭。
其中，设备门锁可以包括主辅变流器门锁、高压柜门锁、机械间门锁和车顶入口门锁，主辅变流器门锁可以为主辅变流器门锁1和主辅变流器门锁2。与之对应地，主辅变流器门锁1通过第一主辅变流器门锁钥匙9实现开启与关闭，主辅变流器门锁2通过第二主辅变流器门锁钥匙10实现开启与关闭，高压柜门锁1通过第一高压柜门锁钥匙11实现开启与关闭，高压柜门锁2通过第二高压柜门锁钥匙12实现开启与关闭，机械间门锁1通过机械间门锁钥匙13实现开启与关闭，车顶入口门锁通过车顶入口门锁钥匙14实现开启与关闭。
第一联锁钥匙箱15内设有气路手柄1，用以连通或断开调车机车风源，第一联锁钥匙箱15还设有接地开关钥匙2，高压接地开关17包括接地开关钥匙孔， 用以供接地开关钥匙2插入；且当接地开关钥匙2插入接地开关钥匙孔中时，高压接地开关17能够开启以实现接地；高压接地开关17还具有高压接地开关钥匙，包括第一高压接地开关钥匙3和第二高压接地开关钥匙4。
车载储能单元隔离开关16具有隔离开关钥匙，包括第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7和第四隔离开关钥匙8。第二联锁钥匙箱18具有第一互锁钥匙孔和第二互锁钥匙孔，第一互锁钥匙孔能够供高压接地开关钥匙和隔离开关钥匙插入，第二互锁钥匙孔能够供设备钥匙插入，且当设备钥匙从第二互锁钥匙孔中拔出时，高压接地开关钥匙和隔离开关钥匙无法从第一互锁钥匙孔中拔出。
第一联锁钥匙箱15中具有一把接地开关钥匙2、一把气路手柄1，在第一联锁钥匙箱15中设置有安全联锁信号反馈，第一联锁钥匙箱15能够向外给出“允许”信号，同时第一联锁钥匙箱15的进风口与调车机车风源相连，第一联锁钥匙箱15的出风口与调车机车受电弓的供风管路相连。当调车机车正常运行时，第一联锁钥匙箱15的气路手柄1处于“1位”接通气路，并向调车机车控制系统发出允许升弓信号。
高压接地开关17安装于调车机车的超高压交流供电系统用主断路器旁边，可以通过触刀与超高压交流供电系统用主断路器的两端相接，从而使超高压交流供电系统用主断路器的两端接地。
车载储能单元隔离开关16与车载储能单元安装在一起，只有将车载储能单元与调车机车的主电路正确隔离，才能将车载储能单元隔离开关16的钥匙取出(也即第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7和第四隔离开关钥匙8才可取出)。
第二联锁钥匙箱18具有第一互锁钥匙孔和第二互锁钥匙孔，第一互锁钥匙孔和第二互锁钥匙孔如说明书附图1所示的并排两列；第一互锁钥匙孔可以供第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7、第四隔离开关钥匙8、第一高压接地开关钥匙3和第二高压接地开关钥匙4插入，第二互锁钥匙孔可以供第一主辅变流器门锁钥匙9、第二主辅变流器门锁钥匙10、第一高压柜门锁钥匙11、第二高压柜门锁钥匙12、机械间门锁钥匙13和车顶入口门锁钥匙14插入。
其中，第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7、第四隔离开关钥匙8、第一高压接地开关钥匙3和第二高压接地开关钥匙4是同一类的可相互通用的钥匙，第一主辅变流器门锁钥匙9、第二主辅变流器门锁钥匙10、第一高压柜门锁钥匙11、第二高压柜门锁钥匙12、机械间门锁钥匙13和车顶入口门锁钥匙14是同一类的可相互通用的钥匙。接地开关钥匙2、第一高压接地开关钥匙3、第一主辅变流器门锁钥匙9是不同的钥匙。
与第二联锁钥匙箱18相对应的各安全联锁，分别安装在各种高压设备的门上，只有通过第二联锁钥匙箱18内的设备钥匙才能打开，门被打开后，设备钥匙将锁定在门上的锁上不能被取出，只有关上门后，设备钥匙才能被取出。
本申请的电力调车机车在正常运行时，高压安全联锁系统的各种钥匙处于如下的位置：
第一主辅变流器门锁钥匙9、第二主辅变流器门锁钥匙10、第一高压柜门锁钥匙11、第二高压柜门锁钥匙12，机械间门锁钥匙13和车顶入口门锁钥匙14均在第二联锁钥匙箱1中，插于第二互锁钥匙孔中；
第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7、第四隔离开关钥匙8分别在四个车载储能单元隔离开关上；
第一高压接地开关钥匙3和第二高压接地开关钥匙4插于高压接地开关17，接地开关钥匙2在第一联锁钥匙箱15中。
本发明所提供的一种具有高压安全联锁系统的调车机车，包括上述具体实施例所描述的高压安全联锁系统；调车机车的其他部分可以参照现有技术，本文不再展开。
本发明还提供一种用于调车机车的高压安全联锁方法，主要包括：
将第一联锁钥匙箱15上的气路手柄1转至隔离位，允许升弓信号断开，且调车机车的空气管路关断并将通往受电弓气路中的压缩空气排向大气；
转动并取出接地开关钥匙2，所述气路手柄1被接地开关钥匙2带动联锁装置而锁在所述第一联锁钥匙箱15中；
将取出的所述接地开关钥匙2插入高压接地开关17的接地开关钥匙孔中，转动所述高压接地开关17的操作手柄到接地位，插入所述高压接地开关17的所述接地开关钥匙2被锁在所述高压接地开关17上；
转动并取出位于所述高压接地开关17的高压接地开关钥匙，此时所述高压接地开关17的操作手柄被锁定在接地位，车顶设备和主变压器的原边处于接地状态；
确认隔离开关钥匙在“0”位置，并操作车载储能单元隔离开关16的操作手柄到“OFF”位置，然后转动所述隔离开关钥匙到“1”位置并取出；
将所述高压接地开关钥匙以及取出的所述隔离开关钥匙插入到第二联锁钥匙箱18的第一互锁钥匙孔，然后将所述隔离开关钥匙和所述高压接地开关钥匙全部转动至“0”位置，解除对设备门锁的锁止，此时可以取出插入于所述第二联锁钥匙箱18的第二互锁钥匙孔的设备钥匙，并利用所述设备钥匙开启所述设备门锁；
取出所述设备钥匙，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱18中；
当所述设备钥匙开启所述设备门锁时，所述设备钥匙锁定于所述设备门锁，无法取出。
上述步骤中，取出所述设备钥匙，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱18中具体为：
取出第一主辅变流器门锁钥匙9、第二主辅变流器门锁钥匙10、第一高压柜门锁钥匙11、第二高压柜门锁钥匙12，机械间门锁钥匙13和车顶入口门锁钥匙14这六把钥匙中的任意一把，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱18中。
电力调车机车高压安全联锁系统的恢复运行的操作过程是：
首先，将各设备门关闭，从设备门锁上取出钥匙：将第一主辅变流器门锁钥匙9、第二主辅变流器门锁钥匙10、第一高压柜门锁钥匙11、第二高压柜门锁钥匙12，机械间门锁钥匙13和车顶入口门锁钥匙14取下；
其次，将第一主辅变流器门锁钥匙9、第二主辅变流器门锁钥匙10、第一高压柜门锁钥匙11、第二高压柜门锁钥匙12，机械间门锁钥匙13和车顶入口门锁钥匙14插回到第二联锁钥匙箱18的第二互锁钥匙孔中，并将上述六把钥匙均转动到“1”位置，此时可从第一互锁钥匙孔中取出第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7、第四隔离开关钥匙8、第一高压接地开关 钥匙3和第二高压接地开关钥匙4；
然后，依次将第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7、第四隔离开关钥匙8、第一高压接地开关钥匙3和第二高压接地开关钥匙4转动到“1”位置并取出，此时，第一主辅变流器门锁钥匙9、第二主辅变流器门锁钥匙10、第一高压柜门锁钥匙11、第二高压柜门锁钥匙12，机械间门锁钥匙13和车顶入口门锁钥匙14都被联锁在第二联锁钥匙箱18的第二互锁钥匙孔中；
而后，依次将第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7和第四隔离开关钥匙8插入到四个车载储能单元隔离开关16中并转动到“1”位，控制车载储能单元隔离开关16的操作手柄到“ON”位置，此时车载储能单元与主电路接通，并且第一隔离开关钥匙5、第二隔离开关钥匙6、第三隔离开关钥匙7和第四隔离开关钥匙8被锁定在车载储能单元隔离开关16上；
接着，依次将第一高压接地开关钥匙3和第二高压接地开关钥匙4插入到高压接地开关17，并转动第一高压接地开关钥匙3和第二高压接地开关钥匙4，然后转动高压接地开关17的操作手柄到“运行”位置，此时第一高压接地开关钥匙3和第二高压接地开关钥匙4被锁定在高压接地开关17上；车顶设备和牵引变压器的原边处于非接地的状态；
再次，转动并取出接地开关钥匙2，此时高压接地开关17的操作手柄被锁在“运行”位置；
最后，将接地开关钥匙2插入到第一联锁钥匙箱15中并转动至“1”位置，转动气路手柄1到“1”位置，此时接地开关钥匙2被锁定在第一联锁钥匙箱15中，此时升弓允许信号接通，且通往受电弓的气路接通。
需要说明的是，本文中的“0”位是指断开位，“1”为是指连通位，而“ON”位置是指开始位，“OFF”位置是指关闭位。
也即，在接近高压设备的过程中，通过硬件机械互锁和控制系统的双重作用下，保证AC25kV供电网侧的受电弓不能升起和真空断路器不能闭合；在接近高压设备的过程中，通过硬件机械互锁和控制系统的双重作用下，保证用于隔离DC750V车载储能单元的隔离开关断开且不能闭合和高速直流断路器不能闭合；在接近高压设备时(车载储能单元除外)，机车网侧电路(包括车顶电路和主变压器 原边电路)已经接地，车载储能单元已被正确隔离，确保人身安全；通过硬件反馈给调车机车控制系统的信号对高压安全联锁系统进行监控。
需要说明的是，在本说明书中，诸如第一和第二之类的关系术语仅仅用来将一个实体与另外几个实体区分开来，而不一定要求或者暗示这些实体之间存在任何这种实际的关系或者顺序。
以上对本发明所提供的调车机车及其高压安全联锁系统与方法进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。

Claims (11)

  1. 一种用于调车机车的高压安全联锁系统，其特征在于，包括第一联锁钥匙箱(15)、高压接地开关(17)、车载储能单元隔离开关(16)、第二联锁钥匙箱(18)和设备门锁，所述设备门锁通过设备钥匙开启与关闭；
    所述第一联锁钥匙箱(15)内设有用以连通或断开调车机车风源的气路手柄(1)，所述第一联锁钥匙箱(15)外设有用以将所述气路手柄(1)锁于所述第一联锁钥匙箱(15)的接地开关钥匙(2)；
    所述高压接地开关(17)具有用以供所述接地开关钥匙(2)插入的接地开关钥匙孔，当所述接地开关钥匙(2)插入所述接地开关钥匙孔中时，所述高压接地开关(17)能够开启以实现接地；所述高压接地开关(17)还连接有用以将所述高压接地开关(17)锁定于开启和解锁位置的高压接地开关钥匙；
    所述车载储能单元隔离开关(16)连接有用以将所述车载储能单元隔离开关(16)锁定于开启和解锁位置的隔离开关钥匙；
    所述第二联锁钥匙箱(18)具有用以供所述高压接地开关钥匙和所述隔离开关钥匙插入的第一互锁钥匙孔，还包括用以供所述设备钥匙插入的第二互锁钥匙孔，当所述设备钥匙从所述第二互锁钥匙孔中拔出时，所述高压接地开关钥匙和所述隔离开关钥匙无法从所述第一互锁钥匙孔中拔出。
  2. 根据权利要求1所述的高压安全联锁系统，其特征在于，所述设备门锁包括主辅变流器门锁、高压柜门锁、机械间门锁和车顶入口门锁。
  3. 根据权利要求2所述的高压安全联锁系统，其特征在于，所述主辅变流器门锁和所述高压柜门锁的个数均为两个。
  4. 根据权利要求1～3任意一项所述的高压安全联锁系统，其特征在于，所述高压接地开关(17)安装于调车机车的超高压交流供电系统用主断路器的一侧，且通过触刀与所述超高压交流供电系统用主断路器的两端相连，以实现所述超高压交流供电系统用主断路器的两端接地。
  5. 根据权利要求4所述的高压安全联锁系统，其特征在于，所述高压接地开关钥匙的个数为两个，且所述隔离开关钥匙的个数为四个。
  6. 根据权利要求1所述的高压安全联锁系统，其特征在于，
    所述隔离开关钥匙包括第一隔离开关钥匙(5)、第二隔离开关钥匙(6)、第三隔离开关钥匙(7)、第四隔离开关钥匙(8)；
    所述高压接地开关钥匙包括第一高压接地开关钥匙(3)和第二高压接地开关钥匙(4)；
    所述设备钥匙包括第一主辅变流器门锁钥匙(9)、第二主辅变流器门锁钥匙(10)、第一高压柜门锁钥匙(11)、第二高压柜门锁钥匙(12)、机械间门锁钥匙(13)和车顶入口门锁钥匙(14)；
    第一隔离开关钥匙(5)、第二隔离开关钥匙(6)、第三隔离开关钥匙(7)、第四隔离开关钥匙(8)、第一高压接地开关钥匙(3)和第二高压接地开关钥匙(4)是同一类的可相互通用的钥匙，第一主辅变流器门锁钥匙(9)、第二主辅变流器门锁钥匙(10)、第一高压柜门锁钥匙(11)、第二高压柜门锁钥匙(12)、机械间门锁钥匙(13)和车顶入口门锁钥匙(14)是同一类的可相互通用的钥匙；
    所述接地开关钥匙(2)、第一高压接地开关钥匙(3)、第一主辅变流器门锁钥匙(9)是不同的钥匙。
  7. 根据权利要求1所述的高压安全联锁系统，其特征在于，
    所述隔离开关钥匙包括第一隔离开关钥匙(5)、第二隔离开关钥匙(6)、第三隔离开关钥匙(7)、第四隔离开关钥匙(8)；
    所述高压接地开关钥匙包括第一高压接地开关钥匙(3)和第二高压接地开关钥匙(4)；
    所述设备钥匙包括第一主辅变流器门锁钥匙(9)、第二主辅变流器门锁钥匙(10)、第一高压柜门锁钥匙(11)、第二高压柜门锁钥匙(12)、机械间门锁钥匙(13)和车顶入口门锁钥匙(14)；
    调车机车在正常运行时，高压安全联锁系统的各种钥匙处于如下的位置：
    第一主辅变流器门锁钥匙(9)、第二主辅变流器门锁钥匙(10)、第一高压柜门锁钥匙(11)、第二高压柜门锁钥匙(12)、机械间门锁钥匙(13)和车顶入口门锁钥匙(14)均在第二联锁钥匙箱(1)中，插于第二互锁钥匙孔中；
    第一隔离开关钥匙(5)、第二隔离开关钥匙(6)、第三隔离开关钥匙(7)、第四隔离开关钥匙(8)分别在四个车载储能单元隔离开关上；
    第一高压接地开关钥匙(3)和第二高压接地开关钥匙(4)插于高压接地开关 (17)，接地开关钥匙(2)在第一联锁钥匙箱(15)中。
  8. 一种调车机车，其特征在于，包括如上述权利要求1至7任意一项所述的高压安全联锁系统。
  9. 一种用于调车机车的高压安全联锁方法，其特征在于，包括：
    将第一联锁钥匙箱(15)上的气路手柄(1)转至隔离位，允许升弓信号断开，且调车机车的空气管路关断并将通往受电弓气路中的压缩空气排向大气；
    转动并取出接地开关钥匙(2)，所述气路手柄(1)被接地开关钥匙(2)带动联锁装置而锁在所述第一联锁钥匙箱(15)中；
    将取出的所述接地开关钥匙(2)插入高压接地开关(17)的接地开关钥匙孔中，转动所述高压接地开关(17)的操作手柄到接地位，插入所述高压接地开关(17)的所述接地开关钥匙(2)被锁在所述高压接地开关(17)上；
    转动并取出位于所述高压接地开关(17)的高压接地开关钥匙，此时所述高压接地开关(17)的操作手柄被锁定在接地位，车顶设备和主变压器的原边处于接地状态；
    确认隔离开关钥匙在“0”位置，并操作车载储能单元隔离开关(16)的操作手柄到“OFF”位置，然后转动所述隔离开关钥匙到“1”位置并取出；
    将所述高压接地开关钥匙以及取出的所述隔离开关钥匙插入到第二联锁钥匙箱(18)的第一互锁钥匙孔，然后将所述隔离开关钥匙和所述高压接地开关钥匙全部转动至“0”位置，解除对设备门锁的锁止，此时可以取出插入于所述第二联锁钥匙箱(18)的第二互锁钥匙孔的设备钥匙，并利用所述设备钥匙开启所述设备门锁；
    取出所述设备钥匙，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱(18)中；
    当所述设备钥匙开启所述设备门锁时，所述设备钥匙锁定于所述设备门锁，无法取出。
  10. 根据权利要求9所述的高压安全联锁方法，其特征在于，所述取出所述设备钥匙，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱(18)中具体为：
    取出第一主辅变流器门锁钥匙(9)、第二主辅变流器门锁钥匙(10)、第一高压柜门 锁钥匙(11)、第二高压柜门锁钥匙(12)、机械间门锁钥匙(13)和车顶入口门锁钥匙(14)六把钥匙中的任意一把，所述隔离开关钥匙和所述高压接地开关钥匙锁定在所述第二联锁钥匙箱(18)中。
  11. 根据权利要求9所述的高压安全联锁方法，其特征在于，调车机车高压安全联锁系统的恢复运行的操作过程是：
    首先，将各设备门关闭，从设备门锁上取出钥匙：将第一主辅变流器门锁钥匙(9)、第二主辅变流器门锁钥匙(10)、第一高压柜门锁钥匙(11)、第二高压柜门锁钥匙(12)、机械间门锁钥匙(13)和车顶入口门锁钥匙(14)取下；
    其次，将第一主辅变流器门锁钥匙(9)、第二主辅变流器门锁钥匙(10)、第一高压柜门锁钥匙(11)、第二高压柜门锁钥匙(12)、机械间门锁钥匙(13)和车顶入口门锁钥匙(14)插回到第二联锁钥匙箱(18)的第二互锁钥匙孔中并均转动到“1”位置，此时可从第一互锁钥匙孔中取出第一隔离开关钥匙(5)、第二隔离开关钥匙(6)、第三隔离开关钥匙(7)、第四隔离开关钥匙(8)、第一高压接地开关钥匙(3)和第二高压接地开关钥匙(4)；
    然后，依次将第一隔离开关钥匙(5、第二隔离开关钥匙(6)、第三隔离开关钥匙(7)、第四隔离开关钥匙(8)、第一高压接地开关钥匙(3)和第二高压接地开关钥匙(4)转动到“1”位置并取出，此时，第一主辅变流器门锁钥匙(9)、第二主辅变流器门锁钥匙(10)、第一高压柜门锁钥匙(11)、第二高压柜门锁钥匙(12)，机械间门锁钥匙(13)和车顶入口门锁钥匙(14)都被联锁在第二联锁钥匙箱(18)的第二互锁钥匙孔中；
    而后，依次将第一隔离开关钥匙(5)、第二隔离开关钥匙(6)、第三隔离开关钥匙(7)和第四隔离开关钥匙(8)插入到四个车载储能单元隔离开关(16)中并转动到“1”位，控制车载储能单元隔离开关(16)的操作手柄到“ON”位置，此时车载储能单元与主电路接通，并且第一隔离开关钥匙(5)、第二隔离开关钥匙(6)、第三隔离开关钥匙(7)和第四隔离开关钥匙(8)被锁定在车载储能单元隔离开关(16)上；
    接着，依次将第一高压接地开关钥匙(3)和第二高压接地开关钥匙(4)插入到高压接地开关(17)，并转动第一高压接地开关钥匙(3)和第二高压接地开关钥匙(4)，然后转动高压接地开关(17)的操作手柄到“运行”位置，此时第一高压接地 开关钥匙(3)和第二高压接地开关钥匙(4)被锁定在高压接地开关(17上；车顶设备和牵引变压器的原边处于非接地的状态；
    再次，转动并取出接地开关钥匙(2)，此时高压接地开关(17)的操作手柄被锁在“运行”位置；
    最后，将接地开关钥匙(2)插入到第一联锁钥匙箱(15)中并转动至“1”位置，转动气路手柄(1)到“1”位置，此时接地开关钥匙(2)被锁定在第一联锁钥匙箱(15)中，此时升弓允许信号接通，且通往受电弓的气路接通。
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