CN113131537B - Interlocking control method for double-current system test line - Google Patents
Interlocking control method for double-current system test line Download PDFInfo
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- CN113131537B CN113131537B CN202110432683.8A CN202110432683A CN113131537B CN 113131537 B CN113131537 B CN 113131537B CN 202110432683 A CN202110432683 A CN 202110432683A CN 113131537 B CN113131537 B CN 113131537B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The invention relates to the technical field of rail transit control, in particular to an interlocking control method of a double-flow test line, which comprises the following steps: when the direct current power supply is selected, the first switch is closed, so that the direct current of the direct current bus is supplied to a contact net or a contact rail; the second switch is closed, and the direct current flowing through the contact net or the contact rail flows back to the direct current bus; when alternating current power supply is selected, the third switch is closed, so that alternating current input by the power supply inlet wire is boosted and supplied to a contact net; the fourth switch is closed, and the alternating current flowing through the contact network flows back to the step-up transformer; carrying out interlocking control on the third switches of the same type and the first switches corresponding to the contact net and the contact rail respectively; and carrying out interlocking control on the fourth switch of the same type and the second switches corresponding to the contact net and the contact rail respectively. The invention can realize the interlocking control of the related control switches and avoid the train safety accidents caused by the power supply conflict of the train.
Description
Technical Field
The invention relates to the technical field of rail transit control, in particular to an interlocking control method of a double-flow system test line.
Background
With the continuous development of the times, the construction of subway rails in China is continuously improved, so that people can go out more conveniently, and the safety is greatly improved. In order to further improve the convenience of people going out in each region in province and city, the construction number of subways is gradually increased in future subway construction planning, and the distance is from near to far, so that the subway construction planning is gradually covered from province center to surrounding counties.
At present, direct current power supply is mostly adopted for subways, and the subway system is short in route, small in line loss and convenient to adjust speed. And in the track construction that covers to surrounding district and county gradually from province meeting center, the construction length of a single track can increase undoubtedly, and the distance of subway station and subway station increases, if continue to adopt DC power supply, can make the track way increase in the electric substation that needs to and voltage loss increase, still can cause the construction cost increase. Therefore, a combination of dc power supply and ac power supply is required. However, the dc power supply and the ac power supply cannot be applied to the same track line at the same time, and some measures must be taken to separately supply power. If an operation error occurs or a control system has a problem, it is easy to cause that a control switch which should be partially turned off is in an on state, and a control switch which should be turned on is in an off state. Therefore, direct current power supply and alternating current power supply are simultaneously applied to the same track line, and power supply conflict occurs, so that train safety accidents are caused.
Disclosure of Invention
The invention aims to provide an interlocking control method of a double-current system test line, which can realize the interlocking control of related control switches when a train runs on the same track line by switching between direct current power supply and alternating current power supply, and avoid the occurrence of power supply conflict and train safety accidents.
In order to achieve the purpose, the interlocking control method of the double-current system test line comprises the following steps:
when the direct current power supply is selected, a first switch in a first power supply loop is closed, so that the direct current of a direct current bus is supplied to a contact net or a contact rail; closing a second switch in the first return circuit, and returning the direct current flowing through the contact net or the contact rail to the direct current bus;
when alternating current power supply is selected, a third switch in a second power supply loop is closed, so that alternating current input by a power supply inlet wire is boosted through a step-up transformer and supplied to a contact network; a fourth switch in the second return circuit is closed, and the alternating current flowing through the contact network flows back to the step-up transformer;
carrying out interlocking control on the third switches of the same type and the first switches corresponding to the contact net and the contact rail respectively;
and carrying out interlocking control on the fourth switch of the same type and the second switches corresponding to the contact network and the contact rail respectively.
The principle and the advantages are as follows:
1. when direct current power supply is needed, the first switch and the second switch are closed, the third switch and the fourth switch are disconnected, switching from alternating current power supply to direct current power supply can be achieved, when direct current is selected to be supplied to a load, then the first switch and the second switch of the corresponding contact net or the contact rail are started according to the requirement of the contact net or the contact rail as needed, and direct current of the direct current bus is supplied to the contact net or the contact rail through the first power supply loop. And finally, the direct current flowing through the contact net or the contact rail flows back to the direct current bus through the first return circuit.
2. When alternating current power supply is needed, the third switch and the fourth switch are closed, the first switch and the second switch are disconnected, alternating current can be supplied to a contact net only through the first power supply loop, and finally, the alternating current flowing through the contact net flows back to the step-up transformer through the second return circuit.
3. The switches of the same type are mutually interlocked and controlled, the interlocking control can refer to the interlocking control of positive and negative rotation of the motor, for example, when direct current power supply is selected, the first power supply loop and the first return loop are kept open, and the control switches (the third switch and the fourth switch) for realizing alternating current on the second power supply loop and the second return loop are kept closed, so that the control switches are used as starting conditions during direct current power supply, and power supply conflict and train safety accidents are avoided. Similarly, when the alternating current power supply is selected, the control switches (the first switch and the second switch) for realizing the direct current on the first power supply loop and the first reflux keep closed as the starting condition during the alternating current power supply. When the direct current power supply is selected and the power supply of the contact rail is selected, the control switch on the corresponding contact net is kept closed as the starting condition. When the direct current power supply is selected and the contact network power supply is selected, the control switch on the corresponding contact rail is kept closed as the starting condition. Therefore, mutual interlocking control is carried out on the switches of the same type, direct current power supply or alternating current power supply switching can be carried out on the same track, and meanwhile interlocking control is achieved, so that power supply conflict is avoided, and train safety accidents are avoided.
Further, when the direct current power supply is selected, a fifth switch additionally arranged in the first power supply loop is closed;
when the alternating current power supply is selected, a sixth switch additionally arranged in the second power supply loop is closed;
and carrying out interlocking control on the sixth switch of the same type and the fifth switches corresponding to the contact net and the contact rail respectively.
The effect is as follows: through carrying out mutual interlocking to the fifth switch that contact net and contact rail correspond respectively to and the sixth switch, guarantee that contact rail and contact net can only select one two, when selecting the contact net power supply, can only follow DC supply and AC supply and carry out one two selection moreover, and then avoid appearing the power supply accident.
Further, the first switch comprises a first contact rail switch close to the bus and corresponding to the contact rail and a first contact net switch close to the bus and corresponding to the contact net;
when the power supply of the contact rail is selected, the first contact rail switch is closed, and the first contact rail switch and the first contact network switch are mutually interlocked and controlled;
when the power supply of the contact network is selected, the first contact network switch is closed, and the first contact rail switch and the first contact network switch are mutually interlocked and controlled.
The effect is as follows: the interlocking control of first contact rail switch and first contact net switch, when selecting the contact rail power supply, the convenience guarantees that the contact net can not supply power. Similarly, when the power supply of the contact net is selected, the power supply of the contact rail is ensured, and the power supply conflict is avoided, so that the train safety accident is caused.
Further, the second switch comprises a second contact rail switch and a second contact network switch;
when the power supply of the contact rail is selected, the second contact rail switch is closed, and the second contact rail switch and the second contact network switch are mutually interlocked and controlled;
and when the power supply of the contact net is selected, closing the second contact net switch, and performing mutual interlocking control on the second contact net switch and the second contact net switch.
The effect is as follows: the interlocking control of second contact rail switch and second contact net switch, when selecting the contact rail power supply, the convenience guarantees that the contact net can not supply power, and when selecting the contact net power supply, guarantees that the contact rail can not supply power like the same reason, avoids appearing the power supply conflict, causes the train incident.
Further, the fifth switch comprises a fifth contact rail switch and a fifth contact network switch, and the fifth contact rail switch is a double-pole single-throw switch;
when the power supply of the contact rail is selected, the fifth contact rail switch is closed, and a first power supply loop and a first return loop of the contact rail are communicated; the fifth contact rail switch and the fifth contact network switch are mutually interlocked and controlled;
and when the power supply of the contact net is selected, closing the fifth contact net switch, and performing mutual interlocking control on the fifth contact net switch and the fifth contact net switch.
The effects are as follows: the interlocking control of fifth contact rail switch and fifth contact net switch, when selecting the contact rail power supply, the convenience guarantees that the contact net can not supply power, and when selecting the contact net power supply, guarantees that the contact rail can not supply power like the same reason, avoids appearing the power supply conflict, causes the train incident.
Further, the contact network comprises a static contact network and a dynamic contact network, and the second contact network switch comprises a second static switch correspondingly connected with the static contact network and a second dynamic switch correspondingly connected with the dynamic contact network;
when the static contact network is selected for power supply, the second static switch is closed, and the second static switch and the second dynamic switch are mutually interlocked and controlled;
and when the power supply of the movable adjusting contact network is selected, the second movable adjusting switch is closed, and the second static adjusting switch and the second movable adjusting switch are mutually interlocked and controlled.
The effect is as follows: the linkage control of the second static adjusting switch and the second dynamic adjusting switch is convenient to ensure that the static adjusting contact network cannot supply power when the dynamic adjusting contact network is selected for power supply, and similarly, the dynamic adjusting contact network cannot supply power when the static adjusting contact network is selected for power supply, so that power supply conflict is avoided, and train safety accidents are caused.
Further, the contact network comprises a static contact network and a dynamic contact network, and the fifth contact network switch comprises a fifth static switch correspondingly connected with the static contact network and a fifth dynamic switch correspondingly connected with the dynamic contact network;
when the static contact network is selected for power supply, the fifth static switch is closed, and the fifth static switch and the fifth dynamic switch are mutually interlocked and controlled;
and when the power supply of the movable adjusting contact network is selected, the fifth movable adjusting switch is closed, and the fifth static adjusting switch and the fifth movable adjusting switch are mutually interlocked and controlled.
The effect is as follows: the fifth static adjusting switch and the fifth dynamic adjusting switch are linked to control, so that the static adjusting contact network can not supply power when the dynamic adjusting contact network is selected for power supply conveniently, and similarly, the dynamic adjusting contact network can not supply power when the static adjusting contact network is selected for power supply, so that power supply conflict is avoided, and train safety accidents are caused.
Further, the contact network comprises a static contact network and a dynamic contact network, and the sixth switch comprises a sixth static switch correspondingly connected with the static contact network and a sixth dynamic switch correspondingly connected with the dynamic contact network;
when the static contact network is selected for power supply, the sixth static switch is closed, and the sixth static switch and the sixth dynamic switch are mutually interlocked and controlled;
and when the power supply of the movable adjusting contact network is selected, the sixth movable adjusting switch is closed, and the sixth static adjusting switch and the sixth movable adjusting switch are mutually interlocked and controlled.
The effect is as follows: the sixth static adjusting switch and the sixth dynamic adjusting switch are linked to control, so that the static adjusting contact network can not supply power when the dynamic adjusting contact network is selected for power supply conveniently, and similarly, the dynamic adjusting contact network can not supply power when the static adjusting contact network is selected for power supply, so that power supply conflict is avoided, and train safety accidents are caused.
Further, the contact network comprises a static contact network and a dynamic contact network, and the fourth switch comprises a fourth static switch correspondingly connected with the static contact network and a fourth dynamic switch correspondingly connected with the dynamic contact network;
when the static contact network is selected for power supply, the fourth static switch is closed, and the fourth static switch and the fourth dynamic switch are mutually interlocked and controlled;
and when the power supply of the movable adjusting contact network is selected, the fourth movable adjusting switch is closed, and the fourth static adjusting switch and the fourth movable adjusting switch are mutually interlocked and controlled.
The effect is as follows: the fourth static adjusting switch and the fourth dynamic adjusting switch are linked to control, so that power supply of the static adjusting contact network is guaranteed when power supply of the dynamic adjusting contact network is selected conveniently, power supply of the dynamic adjusting contact network is guaranteed similarly when power supply of the static adjusting contact network is selected, power supply conflict is avoided, and train safety accidents are caused.
Further, the first switch is a direct current breaker, the second switch, the fourth switch, the fifth switch and the sixth switch are all electric isolating switches, and the third switch is an alternating current breaker.
Further, the direct current circuit breakers and the electric isolating switches in the same first power supply loop are mutually locked and controlled;
and carrying out mutual interlocking control on the alternating current circuit breaker and the electric isolating switch in the same second power supply loop.
The effect is as follows: the circuit breaker and the electric isolating switch which are in the same power supply loop are mutually interconnected and controlled in a locking mode, so that the power supply loop can be protected. For example, on the same power supply circuit, the electric disconnector which cannot be loaded is turned on first, and the circuit breaker which can be loaded is turned on later, so that the circuit breaker which can be loaded must be turned on only when the electric disconnector which cannot be loaded is in a closed state, in other words, the electric disconnector which cannot be loaded is in the closed state as an opening condition of the circuit breaker which can be loaded. Similarly, the breaker with the load is in an off state and serves as an opening condition of the electric isolating switch without the load, so that the switch on the same power supply loop is subjected to interlocking control, and the power supply loop is protected.
Further, a current divider for detecting current is arranged on the first power supply loop and the first return loop;
and a live display device for detecting a live condition is arranged at two ends of the third switch and the fourth switch on the second power supply loop and the second loop back loop.
The effect is as follows: the shunt can conveniently measure the magnitude of direct current in the first power supply loop and the first return loop of the direct current power supply, and confirm whether the first power supply loop and the first return loop are electrified or not, so that the states of the first switch and the second switch can be conveniently monitored, and the interlocking control of each associated switch can be conveniently realized. The electrified display device can conveniently detect whether high-voltage alternating current exists in the second power supply loop and the second return loop, thereby conveniently monitoring the states of the third switch and the fourth switch and further conveniently realizing the interlocking control of each associated switch.
Further, the electrified display device comprises a capacitor and an indicator, wherein one end of the capacitor is electrically connected with the power supply loop or the reflux loop, the other end of the capacitor is electrically connected with the indicator, and one end of the indicator is grounded.
The effects are as follows: whether the second power supply loop and the second return loop have high-voltage alternating current or not can be conveniently and safely measured.
Drawings
FIG. 1 is a logic block diagram of an interlock control system for a dual flow test line in accordance with an embodiment of the present invention;
fig. 2 is a circuit schematic of an interlock control system for a dual flow test line.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the first switch 1, the second switch 2, the third switch 3, the fourth switch 4, the fifth switch 5, the sixth switch 6, the fifth contact rail switch 2031, the fifth movable switch 2021, the fifth static switch 2022, the sixth movable switch 2711, the sixth static switch 2712, the second contact rail switch 3113, the second static switch 3112, the second movable switch 3111, the fourth static switch 3702, the fourth movable switch 3701, the first contact rail switch 213, the first contact rail switch 212, the first backup switch 211, the shunt 4011, and the live display device 4012.
Examples
An interlocking control method for a double-flow system test line is applied to an interlocking control system for the double-flow system test line, and is mainly applied to a subway test line, and the system is basically as shown in the attached figures 1 and 2: the method comprises the following steps:
a direct current load module: the direct current return circuit is used for supplying direct current of the direct current bus to a contact network or a contact rail through the first power supply loop and returning the direct current flowing through the contact network or the contact rail to the direct current bus through the first return circuit;
in this embodiment, the dc bus includes a positive bus and a negative bus for providing 750V or 1500V dc power.
The contact rail comprises a positive single-rail line, a grounding rail and a negative single-rail line. The contact net comprises a static contact net and a dynamic contact net. The static contact net comprises a subway static line and a steel rail and is used for static adjustment when a train stops on the steel rail statically. The movable contact network comprises a subway movable line (train test line) and a steel rail, and is used for moving and regulating the train on the steel rail during test running.
For dc supply:
in power supply of the contact rail, one end of a first power supply loop is electrically connected with a positive bus, and the other end of the first power supply loop is electrically connected with a positive single-rail line of the contact rail;
in the power supply of the contact network, one end of the first power supply loop is electrically connected with the positive bus, and the other end of the first power supply loop is electrically connected with a subway static adjusting line of the contact network or a subway dynamic adjusting line of the contact network.
The first power supply loop comprises a first switch 1 and a fifth switch 5 which are used for opening and closing the first power supply loop; the first switch 1 is close to the positive bus, and the fifth switch 5 is close to the positive single-rail line, the subway static adjusting line or the subway dynamic adjusting line.
The first switch 1 includes a first busbar switch 213 close to the positive busbar and corresponding to the busbar, and a first catenary switch 212 close to the positive busbar and corresponding to the catenary. The positive bus is also electrically connected with a reserved standby direct current supply loop, a first switch 1 is also arranged on the standby direct current supply loop, and the first switch 1 is a first standby switch 211 for opening and closing the standby direct current supply loop. In this embodiment, the first contact rail switch 213, the first contact network switch 212, and the first backup switch 211 are all the same type of dc circuit breakers.
The fifth switch 5 includes a fifth contact rail switch 2031 corresponding to the contact rail and a fifth contact network switch corresponding to the contact network, the fifth switch 5 includes the same type of fifth contact rail switch 2031 and the fifth contact network switch, and the fifth contact rail switch 2031 is a double-pole single-throw switch and is configured to simultaneously turn on and off the first power supply loop and the first return loop of the contact rail. The fifth contact network switch comprises a fifth static switch 2022 correspondingly connected with the static contact network and a fifth dynamic switch 2021 correspondingly connected with the dynamic contact network, which are of the same type. In this embodiment, the fifth contact rail switch 2031, the fifth static tone switch 2022, and the fifth dynamic tone switch 2021 are all electric isolating switches.
In the power supply of the contact rail, one end of the first return circuit is electrically connected with the negative bus, and the other end of the first return circuit is electrically connected with the grounding rail of the contact rail;
in the power supply of the contact network, one end of the first return circuit is electrically connected with the negative bus, and the other end of the first return circuit is electrically connected with a steel rail corresponding to a subway static adjusting line or a steel rail corresponding to a subway dynamic adjusting line in the contact network.
The first return circuit comprises a second switch 2 for opening and closing the first return circuit; the second switch 2 is close to the negative bus, and the second switch 2 includes a second contact rail switch 3113 correspondingly connected to the contact rail and a second contact net switch correspondingly connected to the contact net.
The second contact net switch comprises a second static switch 3112 correspondingly connected with the static contact net and a second dynamic switch 3111 correspondingly connected with the dynamic contact net. In this embodiment, the second contact rail switch 3113, the second static switch 3112 and the second dynamic switch 3111 are all electric isolating switches. The fifth contact rail switch 2031 in the first power supply circuit is a double-pole single-throw switch, and can simultaneously turn on and off the first power supply circuit and the first return circuit of the contact rail. The fifth contact rail switch 2031 opens and closes one end of the first return circuit of the contact rail, and is closer to the ground rail than the second contact rail switch 3113.
An alternating current load module: the second power supply loop is used for boosting the alternating current input by the power supply inlet wire through the step-up transformer, supplying the alternating current to the contact network through the second power supply loop, and returning the alternating current flowing through the contact network to the step-up transformer through the second return loop;
the alternating current input by the power supply inlet wire is 10KV alternating current, the step-up transformer is a three-phase to single-phase transformer, the three-phase to single-phase transformer is a transformer with three-phase input and two-path single-phase output, and the 10KV three-phase alternating current can be converted into 27.5KV single-phase alternating current.
For ac supply:
the alternating current power supply is only used for supplying power to the contact network, one end of the second power supply loop is electrically connected with one output end of the step-up transformer, and the other end of the second power supply loop is electrically connected with a subway static adjusting line of the contact network or a subway dynamic adjusting line of the contact network;
the second power supply loop comprises a third switch 3 and a sixth switch 6 which are used for opening and closing the second power supply loop; the third switch 3 is close to an output terminal of the step-up transformer. The sixth switch 6 includes a sixth static switch 2712 connected correspondingly and close to the static contact network and a sixth dynamic switch 2711 connected correspondingly and close to the dynamic contact network. In this embodiment, the third switch 3 is an ac circuit breaker, and the sixth static adjustment switch 2712 and the sixth dynamic adjustment switch 2711 are the same type of electric isolation switches.
The second return circuit comprises a fourth switch 4 for opening and closing the second return circuit; the fourth switch 4 comprises a fourth static switch 3702 correspondingly connected to the static contact network and a fourth dynamic switch 3701 correspondingly connected to the dynamic contact network. In this embodiment, the fourth static tone switch 3702 and the fourth dynamic tone switch 3701 are the same type of electric disconnecting switch.
Interlocking control module: the system is used for carrying out mutual interlocking control on the switches of the same type; the first switch 1 in the first power supply loop and the third switch 3 in the second power supply loop with the same power supply attribute are the same type of switch; the second switch 2 in the first return circuit and the fourth switch 4 in the second return circuit of the same return property are of the same type of switch.
The first contact rail switch 213, the first contact network switch 212 and the first standby switch 211 which are included in the first switch 1 are switches of the same type;
the second switch 2 includes a second contact rail switch 3113, a second static switch 3112 and a second dynamic switch 3111 which are of the same type;
the fourth switch 4 includes a fourth static switch 3702 and a fourth dynamic switch 3701 which are the same type of electric isolation switch.
The fifth switch 5 includes a fifth contact rail switch 2031, a fifth static tone switch 2022, and a fifth dynamic tone switch 2021, which are the same type of electric disconnecting switches.
The sixth switch 6 includes a sixth static switch 2712 and a sixth dynamic switch 2711 which are the same type of electric isolation switch.
The method specifically comprises the following steps:
the first contact rail switch 213, the first contact network switch 212 and the first standby switch 211 of the first switch 1 in the first power supply loop and the third switch 3 in the second power supply loop are controlled in an interlocking manner, so that only one of the first contact rail switch 213, the first contact network switch 212, the first standby switch 211 and the third switch 3 can be turned on; for example, the first busbar switch 213 is to be opened, the first catenary switch 212, the first standby switch 211, and the third switch 3 all need to be closed as a necessary condition for the first busbar switch 213 to be opened. The interlocking control of other switches is the same.
Interlocking control is carried out on a fifth contact rail switch 2031, a fifth static adjusting switch 2022 and a fifth dynamic adjusting switch 2021 of a fifth switch 5 in the first power supply loop and a sixth static adjusting switch 2712 and a sixth dynamic adjusting switch 2711 of a sixth switch 6 in the second power supply loop, so that only one of the fifth contact rail switch 2031, the fifth static adjusting switch 2022, the fifth dynamic adjusting switch 2021, the sixth static adjusting switch 2712 and the sixth dynamic adjusting switch 2711 can be switched on;
the second contact switch 3113, the second static switch 3112, and the second dynamic switch 3111 of the second switch 2 in the first return circuit, and the fourth switch 4 in the second return circuit are interlock-controlled, so that only one of the second contact switch 3113, the second static switch 3112, and the second dynamic switch 3111 of the second switch 2, and the fourth static switch 3702 and the fourth dynamic switch 3701 of the fourth switch 4 can be turned on.
Interlocking control module: the power supply circuit comprises a first power supply circuit and a second power supply circuit, and the circuit breaker comprises an alternating current circuit breaker and a direct current circuit breaker. The method specifically comprises the following steps:
the first power supply circuit in the power supply to the contact rail has a first contact rail switch 213 (dc breaker) and a fifth contact rail switch 2031 (electric disconnector) that are controlled to interlock with each other. The first contact rail switch 213 (dc breaker) may be started with a load, the fifth contact rail switch 2031 (electric disconnector) may not be started with a load, and the fifth contact rail switch 2031 (electric disconnector) is in a closed state as an opening condition of the first contact rail switch 213 (dc breaker) that may be loaded; the first contact rail switch 213 (dc breaker) that can be loaded is turned off as the on condition of the fifth contact rail switch 2031 (electric disconnector) that cannot be loaded, so that the circuit breaker and the electric disconnector on the same power supply circuit are interlocked and controlled.
A first contact network switch 212 (a direct current breaker) of a first power supply loop in contact network power supply and a fifth static adjusting switch 2022 (an electric isolating switch) or a fifth dynamic adjusting switch 2021 (an electric isolating switch) are mutually interlocked and controlled, and the mutual interlocking control principle is the same as that of a first contact rail switch 213 (a direct current breaker) and a fifth contact rail switch 2031 (an electric isolating switch);
the third switch 3 (alternating current breaker) of the second power supply loop in the power supply of the contact network and the sixth static adjusting switch 2712 (electric isolating switch) or the sixth dynamic adjusting switch 2711 (electric isolating switch) of the sixth switch 6 are mutually interlocked and controlled, and the mutual interlocking control principle is the same as that of the first contact rail switch 213 (direct current breaker) and the fifth contact rail switch 2031 (electric isolating switch).
The interlocking control module can realize interlocking control of direct current power supply and alternating current power supply, interlocking control of contact rail power supply and contact network power supply, interlocking control of static adjustment and dynamic adjustment of contact network power supply and interlocking control of a circuit breaker and an electric isolating switch on the same power supply loop through interlocking control of each switch. Therefore, a protection circuit is achieved, and the condition that power supply conflict occurs to cause train safety accidents is avoided.
The first power supply loop and the first return loop are provided with current dividers 4011 for detecting current, and two ends of the third switch 3 and the fourth switch 4 on the second power supply loop and the second return loop are provided with electrified display devices 4012. Electrified display device 4012 includes electric capacity and indicator, power supply circuit or backward flow return circuit are connected to electric capacity one end electricity, and the indicator is connected to electric capacity other end electricity, and indicator one end ground connection sets up.
The interlocking control method for the double-flow test line specifically comprises the following steps of:
and S1, selecting a power supply mode, wherein the power supply mode comprises direct current power supply and alternating current power supply, contact rail power supply or contact net power supply, the direct current power supply and the alternating current power supply can be selected from one to the other, and the contact rail power supply or the contact net power supply can be selected from one to the other. The contact net comprises a static contact net and a dynamic contact net, so that the power supply of the contact net comprises static contact net power supply and dynamic contact net power supply. The static contact network power supply and the dynamic contact network power supply can be selected from two.
S2, when the direct current power supply is selected, a first switch 1 in the first power supply loop is closed, so that the direct current of the direct current bus is supplied to a contact net or a contact rail; the second switch 2 in the first return circuit is closed, and the direct current flowing through the contact net or the contact rail is returned to the direct current bus;
the step S2 specifically includes two steps:
s201, supplying direct current of a positive bus in a direct current bus to a positive single-rail line of a contact rail; and the direct current flowing through the negative single-rail line is refluxed to the negative bus of the direct current bus.
And S202, supplying the direct current of the positive bus in the direct current bus to a contact network, and refluxing the direct current flowing through the rail to the negative bus of the direct current bus.
The step S201 specifically includes two steps:
s2011, when selecting the power supply of the contact rail, first closing the first contact rail switch 213 of the first power supply loop; the first contact rail switch 213 and the first contact network switch 212 are mutually interlocked and controlled;
s2012, closing the fifth contact rail switch 2031 of the first power supply circuit, and communicating the first power supply circuit and the first return circuit of the contact rail; and the fifth contact rail switch 2031, the fifth static adjustment switch 2022 and the fifth dynamic adjustment switch 2021 are controlled to be interlocked with each other.
S2013, the second contact rail switch 3113 of the first return circuit is closed again, and the second static adjustment switch 3112 and the second dynamic adjustment switch 3111 are controlled to be interlocked with each other.
The step S202 specifically includes the steps of:
s2021, when the power supply of the overhead line system is selected, closing the first overhead line system switch 212 of the first power supply circuit, and performing mutual interlock control on the first contact rail switch 213 and the first overhead line system switch 212. And then the fifth contact network switch is closed, and the fifth contact rail switch 2031 and the fifth contact network switch are mutually interlocked and controlled. And finally, closing the second contact network switch, and performing mutual interlocking control on the second contact network switch and the second contact rail switch 3113.
The step S2021 specifically includes the steps of: step S2021-1, step S2021-2, step S2022-1 and step S2022-2;
step S2021-1 and step S2021-2 are operation steps of a first power supply loop and a first return loop when the static contact network is selected for power supply;
step S2022-1 and step S2022-2 are operation steps of the first power supply loop and the first return loop when the power supply of the touch screen is selected.
S2021-1, when the static contact network power supply is selected, the fifth static switch 2022 in the fifth contact network switch is closed, and the fifth contact rail switch 2031, the fifth static switch 2022, and the fifth dynamic switch 2021 are controlled to interlock with each other;
s2021-2, finally, the second static switch 3112 is closed, and the second contact rail switch 3113, the second static switch 3112 and the second dynamic switch 3111 are controlled to be interlocked with each other.
S2022-1, when the power supply of the dynamic adjustment contact network is selected, the fifth dynamic adjustment switch 2021 in the fifth contact network switch is closed, and the fifth contact rail switch 2031, the fifth static adjustment switch 2022, and the fifth dynamic adjustment switch 2021 are controlled to be interlocked with each other.
S2022-2, finally, the second dynamic adjustment switch 3111 is closed, and the second contact rail switch 3113, the second static adjustment switch 3112 and the second dynamic adjustment switch 3111 are controlled in an interlocking manner.
S3, when alternating current power supply is selected, a third switch 3 in a second power supply loop is closed, so that alternating current input by a power supply inlet wire is boosted through a booster transformer and supplied to a contact network; a fourth switch 4 in the second return circuit is closed, and the alternating current flowing through the contact network flows back to the step-up transformer;
the step S3 specifically includes two steps:
s301, when the static contact network is selected for power supply, closing a third switch 3 in a second power supply loop, closing a sixth static switch 2712, and finally closing a fourth static switch 3702 in a second return loop;
and S302, when the power supply of the dynamic adjustment contact network is selected, closing a third switch 3 in the second power supply loop, closing a sixth dynamic adjustment switch 2711, and finally closing a fourth dynamic adjustment switch 3701 in the second return loop.
S4, the third switch 3 is interlocked with the first contact rail switch 213, the first catenary switch 212, and the first backup switch 211.
S5, the fifth contact rail switch 2031, the fifth static adjusting switch 2022, the fifth dynamic adjusting switch 2021, the sixth static adjusting switch 2712 and the sixth dynamic adjusting switch 2711 are mutually interlocked and controlled.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is described herein in more detail, so that a person of ordinary skill in the art can understand all the prior art in the field and have the ability to apply routine experimentation before the present date, after knowing that all the common general knowledge in the field of the invention before the application date or the priority date of the invention, and the person of ordinary skill in the art can, in light of the teaching provided herein, combine his or her own abilities to complete and implement the present invention, and some typical known structures or known methods should not become an obstacle to the implementation of the present invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. The interlocking control method for the double-flow test line is characterized by comprising the following steps of:
when the direct current power supply is selected, a first switch in a first power supply loop is closed, so that the direct current of a direct current bus is supplied to a contact net or a contact rail; closing a second switch in the first return circuit, and returning the direct current flowing through the contact net or the contact rail to the direct current bus;
when alternating current power supply is selected, a third switch in a second power supply loop is closed, so that alternating current input by a power supply inlet wire is boosted through a boosting transformer and supplied to a contact net; a fourth switch in the second return circuit is closed, and the alternating current flowing through the contact network flows back to the step-up transformer;
carrying out interlocking control on the third switches of the same type and the first switches corresponding to the contact net and the contact rail respectively;
carrying out interlocking control on the fourth switches of the same type and the second switches corresponding to the contact net and the contact rail respectively;
when the direct current power supply is selected, a fifth switch additionally arranged in the first power supply loop is closed;
when the alternating current power supply is selected, a sixth switch additionally arranged in the second power supply loop is closed;
carrying out interlocking control on the sixth switch of the same type and the fifth switches corresponding to the contact net and the contact rail respectively;
the second switch comprises a second contact rail switch and a second contact network switch;
when the power supply of the contact rail is selected, the second contact rail switch is closed, and the second contact rail switch and the second contact network switch are mutually interlocked and controlled;
when the power supply of the contact network is selected, a second contact network switch is closed, and the second contact rail switch and the second contact network switch are mutually interlocked and controlled;
the second contact net switch comprises a second static switch correspondingly connected with the static contact net and a second dynamic switch correspondingly connected with the dynamic contact net;
when the static contact network is selected for power supply, the second static switch is closed, and the second static switch and the second dynamic switch are mutually interlocked and controlled;
when the power supply of the movable adjusting contact network is selected, the second movable adjusting switch is closed, and the second static adjusting switch and the second movable adjusting switch are mutually interlocked and controlled;
the fifth switch comprises a fifth contact rail switch and a fifth contact network switch, and the fifth contact rail switch is a double-pole single-throw switch;
when the power supply of the contact rail is selected, the fifth contact rail switch is closed, and a first power supply loop and a first return loop of the contact rail are communicated; the fifth contact rail switch and the fifth contact network switch are mutually interlocked and controlled;
and when the power supply of the contact net is selected, closing the fifth contact net switch, and performing mutual interlocking control on the fifth contact net switch and the fifth contact net switch.
2. The interlock control method for the dual flow test line according to claim 1, characterized in that: the first switch comprises a first contact rail switch close to the bus and corresponding to the contact rail and a first contact net switch close to the bus and corresponding to the contact net;
when the power supply of the contact rail is selected, closing a first contact rail switch, and performing mutual interlocking control on the first contact rail switch and a first contact network switch;
when the power supply of the contact net is selected, the first contact net switch is closed, and the first contact net switch are mutually interlocked and controlled.
3. The interlock control method for the dual flow test line according to claim 1, characterized in that: the contact net comprises a static contact net and a dynamic contact net, and the fifth contact net switch comprises a fifth static switch correspondingly connected with the static contact net and a fifth dynamic switch correspondingly connected with the dynamic contact net;
when the static contact network is selected for power supply, the fifth static switch is closed, and the fifth static switch and the fifth dynamic switch are mutually interlocked and controlled;
and when the power supply of the movable adjusting contact network is selected, the fifth movable adjusting switch is closed, and the fifth static adjusting switch and the fifth movable adjusting switch are mutually interlocked and controlled.
4. The interlock control method for the dual flow test line according to claim 1, characterized in that: the contact network comprises a static contact network and a dynamic contact network, and the sixth switch comprises a sixth static switch correspondingly connected with the static contact network and a sixth dynamic switch correspondingly connected with the dynamic contact network;
when the static contact network is selected for power supply, the sixth static switch is closed, and the sixth static switch and the sixth dynamic switch are mutually interlocked and controlled;
and when the power supply of the movable adjusting contact network is selected, the sixth movable adjusting switch is closed, and the sixth static adjusting switch and the sixth movable adjusting switch are mutually interlocked and controlled.
5. The interlock control method for the dual flow test line according to claim 1, characterized in that: the contact network comprises a static contact network and a dynamic contact network, and the fourth switch comprises a fourth static switch correspondingly connected with the static contact network and a fourth dynamic switch correspondingly connected with the dynamic contact network;
when the static contact network is selected for power supply, the fourth static switch is closed, and the fourth static switch and the fourth dynamic switch are mutually interlocked and controlled;
and when the power supply of the movable adjusting contact network is selected, the fourth movable adjusting switch is closed, and the fourth static adjusting switch and the fourth movable adjusting switch are mutually interlocked and controlled.
6. The interlock control method for the dual flow test line according to claim 1, characterized in that: the first switch is a direct current breaker, the second switch, the fourth switch, the fifth switch and the sixth switch are all electric isolating switches, and the third switch is an alternating current breaker.
7. The interlock control method for the dual flow test line according to claim 6, characterized in that:
carrying out mutual interlocking control on a direct-current breaker and an electric isolating switch in the same first power supply loop;
and carrying out mutual interlocking control on the alternating current circuit breaker and the electric isolating switch in the same second power supply loop.
8. The interlock control method for the dual flow test line according to claim 1, characterized in that:
a current divider used for detecting current is arranged on the first power supply loop and the first loop back loop;
and a live display device for detecting a live condition is arranged at two ends of the third switch and the fourth switch on the second power supply loop and the second loop back loop.
9. The interlock control method for the dual flow test line according to claim 8, characterized in that: the electrified display device comprises a capacitor and an indicator, wherein one end of the capacitor is electrically connected with a power supply loop or a backflow loop, the other end of the capacitor is electrically connected with the indicator, and one end of the indicator is grounded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110432683.8A CN113131537B (en) | 2021-04-21 | 2021-04-21 | Interlocking control method for double-current system test line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110432683.8A CN113131537B (en) | 2021-04-21 | 2021-04-21 | Interlocking control method for double-current system test line |
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| CN203592908U (en) * | 2013-11-18 | 2014-05-14 | 中铁第一勘察设计院集团有限公司 | Direct current-alternating current traction power supply system |
| CN103950394B (en) * | 2014-03-25 | 2015-03-25 | 株洲变流技术国家工程研究中心有限公司 | Alternating current and direct current mixed traction power supply system with ice melting function |
| CN112670988B (en) * | 2021-01-11 | 2022-08-19 | 重庆中车长客轨道车辆有限公司 | Double-flow control device in trial run static adjustment line and control mode thereof |
| CN112670989A (en) * | 2021-01-12 | 2021-04-16 | 重庆中车长客轨道车辆有限公司 | Control device and control method for trial run dynamic line switching in alternating current and direct current |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3406476A1 (en) * | 2016-03-03 | 2018-11-28 | NR Electric Co., Ltd. | Locomotive regenerative electric energy feedback system with ice melting function and control method |
| CN106253289A (en) * | 2016-08-12 | 2016-12-21 | 成都运达科技股份有限公司 | A kind of electric power supply system for subway power flow calculation method of car net coupling |
| CN112599370A (en) * | 2020-12-17 | 2021-04-02 | 中车广东轨道交通车辆有限公司 | Rail transit safety interlocking device |
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