CN208665007U - A kind of electric railway switching station powered construction - Google Patents

Abstract

The utility model discloses a kind of electric railway switching station powered constructions, belong to electric railway traction power supply observation and control technology field.The bus of switching station feeds out three branches parallel with one another, i.e. the first branch, second branch and with third branch, two sectionalisers are set on closing exported contact net, it is connected between two sectionalisers by transition region, every branch passes through breaker, current transformer and upper cable and is connected on the contact net at sectionaliser or transition region nearby, wherein, it is being connected between breaker, current transformer and upper cable three in series system in every branch, voltage transformer is arranged in parallel between contact net and rail.It can not only timely and accurately find failure and isolated fault, but also can cause arcing and scaling loss by manipulating thoroughly eliminate pantograph shorting contact net when train drives into faulty section from non-faulting section new short circuit and train on-load is caused to enter non-Electric region, even blow the phenomenon that contact net causes accident and hidden danger.

Description

A kind of electric railway switching station powered construction

Technical field

The utility model belongs to attached wires of AC electrified railway traction power supply observation and control technology field.

Background technique

Directly occupy most status in the electric railway of power supply (direct-furnish) mode, it has, and structure is simple, investment is less, Many advantages, such as maintenance and repair is easy.Obviously, under direct-furnish mode, implement power supply or adjacent traction over long distances in traction substation Non-Electric region can be reduced or eliminated by implementing through cophase supply between electric substation, and then improve power supply capacity.At the same time, it is Failure is limited in minimum zone, guarantees larger range of normal power supply, needs Traction networks to realize sectional power supply, that is, is connecing Sectionaliser is installed in net-fault and switching station is set, to realize segmental resection, the isolation of failure.But this segmentation method is connecing Net-fault can also bring new problem when breaking down: (1) breaker open operation of faulty section two sides is by after Fault Isolation, if train from Non-faulting section drives into faulty section, then the contact net of normal contact net and faulty section can be shorted by its pantograph, causes new short circuit Failure；(2) if instantaneous short-circuit failure is after the catenary cut off of faulty section one end or the breaker open operation at faulty section both ends Through disappearing, if train from non-faulting section drives into faulty section at this time, belongs to train on-load and enters non-Electric region, arcing will be caused, Arcing meeting scaling loss contact line, or even contact line is blown, it leads to a disaster.

Obviously, technical problem urgently to be solved is now: while being found in time and accurately with isolated fault, thoroughly Eliminating pantograph shorting contact net when train drives into faulty section from non-faulting section causes new short circuit and train on-load to enter nothing The phenomenon that electric area causes arcing and scaling loss, even blows contact net and cause accident and hidden danger.

Utility model content

The utility model mesh is to provide a kind of electric railway switching station powered construction, it can efficiently solve the prior art Present in the technical issues of cannot timely and accurately finding failure and isolated fault, then by manipulation can thoroughly eliminate train from Pantograph shorting contact net causes new short circuit and train on-load to enter non-Electric region and cause to draw when non-faulting section drives into faulty section Arc and scaling loss, the phenomenon that even blowing contact net and causing accident and hidden danger, to improve the reliability and iron of power supply system The defeated efficiency of road transport.

In order to solve the above-mentioned technical problem, the utility model proposes following technical solutions:

A kind of electric railway switching station powered construction, including contact net and rail and switching station, contact net and rail Between be arranged in parallel voltage transformer, the bus of switching station feeds out three branches parallel with one another, the i.e. first branch, second branch With with third branch, two sectionalisers are set on the contact net of switching station outlet, pass through transition region company between two sectionalisers It connects, every branch passes through the contact net that breaker, current transformer and upper cable are connected to nearby at sectionaliser or transition region On, wherein it is being connected between breaker, current transformer and upper cable three in series system in every branch.

Preferably, the contact net of switching station outlet is arranged two sectionalisers being serially connected, i.e., sectionaliser one and point Section device two, the region between them is known as transition region.

It is further preferred that the first branch is nearest by concatenation breaker one, current transformer one and upper cable one It is connected in the contact net transition region between sectionaliser one and sectionaliser two.

It is further preferred that the second branch is nearest by concatenation breaker two, current transformer two and upper cable two It is connected on the contact net of one left end of sectionaliser.

It is further preferred that three branch third branches pass through concatenation breaker three, current transformer three and upper cable three It is connected on the contact net of two right end of sectionaliser nearby.

Compared with prior art, the utility model has the following beneficial effects: power supply structure described in technical solutions of the utility model It makes, two sectionalisers is mainly set on the contact net of switching station outlet, contact net transition region is set among it, it can not only be timely When accurately finding failure and isolated fault, but also can thoroughly eliminate train by manipulation and drive into faulty section from non-faulting section Pantograph shorting contact net causes new short circuit and train on-load to enter non-Electric region and cause arcing and scaling loss, even blow contact Net and the phenomenon that cause accident and hidden danger, to improve the reliability of power supply system and the efficiency of railway transportation；Meanwhile being related to Relevant apparatus investment it is less, it is easy to implement, both used convenient for new line, be also convenient for the transformation of old line.

Detailed description of the invention

Fig. 1 is the organigram of the utility model electric railway switching station.

Fig. 2 is the structural schematic diagram of the utility model electric railway switching station.

Fig. 3 is the structural schematic diagram of the utility model electric railway switching station direct supply system.

Specific embodiment

In order to preferably understand the utility model embodiment, the working principle of the utility model are as follows: when contact network short circuit fault, Contact net voltage train decompression lower than state threshold UT, train current transformer net side are closed, load=0, contact net short dot two Side breaker open operation, if it is △ t1 that train current transformer net side, which closes the reaction time, the contact net breaker open operation time is △ t2, column It is △ t3, reclosing after contact net short circuit that vehicle current transformer, which detects that contact net voltage normally restores the time interval worked normally afterwards, Time interval be △ t4；Two sectionalisers in setting left and right on the contact net of switching station outlet, two sectionalisers centre settings Contact net transition region；Due to △ t1 < △ t2 < △ t3 and △ t4, and assume △ t1+ △ t3 > △ t2+ △ t4, then, when connecing When net-fault short trouble, the breaker open operation at faulty section both ends, transition region breaker open operation material is thus formed normal reach, is connect Three kinds of sections of net-fault transition region and faulty section.Normal reach restores normal power supply at this time, but in short-circuit decompression range, transition region and Faulty section is without electricity, and the train current transformer net side within the scope of decompression is closed, i.e. train load=0, and train is passed through described by normal reach The sectionaliser of switching station outlet is not on-load when entering the transition region without electricity, therefore can enter nothing to avoid train on-load Electric area, the phenomenon that arcing and scaling loss would not be caused, even contact net is blown and cause accident and hidden danger, while contact net transition Area's breaker open operation and without electricity, its pantograph is by non-faulting when can drive into faulty section from normal reach (non-faulting section) to avoid train The contact net of section contact net and faulty section is shorted and causes new short circuit.

In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing and have The utility model is described in further detail for body embodiment.

As shown in Figure 1, the utility model embodiment provides a kind of electrified railway power supply construction, the switching station KB is supplied The bus MX for being electrically configured as the switching station KB feeds out three branches parallel with one another, i.e. the first branch, second branch and with Two sectionalisers are arranged on the contact net T of switching station outlet, are connected between two sectionalisers by transition region Ta for three branches It connects, every branch passes through the contact net T that breaker, current transformer and upper cable are connected to nearby at sectionaliser or transition region On, wherein it is being connected between breaker, current transformer and upper cable three in series system in every branch, the contact Voltage transformer YH is arranged in parallel between net T and rail R.

In utility model embodiment, two sectionalisers being serially connected are arranged in the contact net T of the switching station outlet, i.e., One FDa of sectionaliser and right two FDb of sectionaliser sectionaliser, the region between them is known as transition region Ta.The first branch passes through Concatenation one DL0 of breaker, one LH0 of current transformer and one SW0 of upper cable are connected to one FDa of sectionaliser and sectionaliser two nearby On transition region Ta between FDb.The second branch passes through concatenation two DL1 of breaker, two LH1 of current transformer and upper cable two SW1 is connected to nearby on the contact net T of one left end FDa of sectionaliser.Third branch passes through concatenation three DL3 of breaker, Current Mutual Inductance Three LH2 of device and three SW3 of upper cable are connected to nearby on the contact net T of two FDb right end of sectionaliser.

And two sectionalisers in left and right are arranged in the utility model embodiment on the contact net T that switching station exports, and set among it Transition region Ta is set, transition region Ta is powered by switching station's direct-furnish；Train unsteady flow when contact net T short trouble, within the scope of decompression Device net side is closed, i.e. train load=0, the sectionaliser FDa and sectionaliser FDb and transition region that train is exported by the switching station When be not on-load, therefore non-Electric region can be entered to avoid train on-load, arcing and scaling loss would not be caused, even blown Contact net and the phenomenon that cause accident and hidden danger, while transition region separating brake power loss, can be driven into avoid train from non-faulting section therefore The contact net of non-faulting section contact net and faulty section is shorted and causes new short circuit by barrier Duan Shiqi pantograph.

As shown in Fig. 2, electric railway switching station powered construction described in the utility model embodiment and contact net T and rail R constitutes electric railway switching station.As shown in figure 3, including the opening and closing of electric railway described in multiple the utility model embodiments The switching station of institute's powered construction and contact net T and rail R constitute electric railway switching station direct supply system.Using the electricity described in this Gasification railway switching station and switching station's direct supply system can enter non-Electric region to avoid train on-load, would not cause arcing and burning The phenomenon that damaging, even blowing contact net and cause accident and hidden danger, while contact net T transition region separating brake power loss, can be to avoid column The contact net of non-faulting section contact net and faulty section is shorted and causes new by its pantograph when vehicle drives into faulty section from non-faulting section Short circuit.

Claims (5)

1. a kind of electric railway switching station powered construction, including contact net (T) and rail (R) and switching station (KB), contact Voltage transformer (YH) is arranged in parallel between net (T) and rail (R), it is characterised in that: the bus (MX) of switching station (KB) is fed out Three branches parallel with one another, the i.e. first branch, second branch and with third branch, the switching station outlet contact net (T) two sectionalisers are set on, are connected between two sectionalisers by transition region (Ta), every branch passes through breaker, electricity Current transformer and upper cable are connected to nearby on the contact net at sectionaliser or transition region (T), wherein breaking in every branch It is connected between device, current transformer and upper cable three in series system.

2. electric railway switching station according to claim 1 powered construction, which is characterized in that the switching station outlet Two sectionalisers being serially connected, i.e. sectionaliser one (FDa) and sectionaliser two (FDb), the area between them is arranged in contact net (T) Domain is known as transition region (Ta).

3. electric railway switching station according to claim 2 powered construction, which is characterized in that the first branch passes through Concatenation breaker one (DL0), current transformer one (LH0) and upper cable one (SW0) are connected to sectionaliser one (FDa) nearby and divide In contact net transition region (Ta) between section device two (FDb).

4. electric railway switching station according to claim 2 powered construction, which is characterized in that the second branch passes through Concatenation breaker two (DL1), current transformer two (LH1) and upper cable two (SW1) are connected to the left end sectionaliser one (FDa) nearby Contact net (T) on.

5. electric railway switching station according to claim 2 powered construction, which is characterized in that three branch third branches Sectionaliser two (FDb) is connected to nearby by concatenation breaker three (DL3), current transformer three (LH2) and upper cable three (SW3) On the contact net (T) of right end.