CN104986190A - Method and system for utilizing recovered energy of rail train - Google Patents

Abstract

The embodiment of the invention provides a method and system for utilizing recovered energy of a rail train. The method mainly comprises the steps that in the brake speed reduction process of the rail train, the recovered energy is generated according to speed reduction, the rail train transmits the recovered energy to a power grid, and speed changing information of the rail train is transmitted to a train dispatching center; and after the train dispatching center determines the rail train required to be accelerated, according to the recovered energy and speed and position information of other rail trains required to be accelerated, the acceleration speed is calculated, and the acceleration speed is transmitted to the rail train required to be accelerated. By means of the embodiment, the recovered energy generated in the brake speed reduction process of the rail train under the moving block signal control condition is transmitted to the power grid, and the train dispatching center transmits the utilization scheme of the recovered energy to the accelerated train, so that the recovered energy of the train can be fully utilized in an optimized manner, and the energy-saving effect of the train is improved.

Description

The Application way of the regenerated energy of track train and system

Technical field

The present invention relates to train energy control technology field, particularly relate to a kind of Application way and system of regenerated energy of track train.

Background technology

Along with the quickening of Urbanization in China, trip requirements sharply increases.Have the urban track traffic of large conveying quantity, low energy consumption, high punctuality, its importance highlights day by day.While lifting urban track traffic operation ability, also bring the sharp increase of energy consumption.Therefore the relevant energy saving technologys such as energy-saving train operation control and regenerative brake receive very big concern.

In city rail system, train frequent starting and braking.The regenerated energy produced during train braking can reach and start more than 20% of institute's energy requirement.At present, mainly concentrate in the development of equipment the research of train regenerating braking energy, if feedback device, closed-center system etc., have the formulation etc. of timetable, and utilize comparatively rare based on the regenerated energy of optimal speed curve in the research of operation organizational aspects.

Under movable block signal control condition, safe operation only needs to maintain a certain distance between adjacent two row same direction trains.This master mode can ensure the rate of traffic flow improving circuit on the basis of safe passing, and then improves operation ability.In controlling at movable block, the density of running train is large, and situation is complicated, in order to ensure the safety of driving a vehicle, realize " line traffic control ", by means of the analog functuion of computing machine, carrying out research to the tracking operation of train and optimal control is the comparatively practicable method of one.

Analogy method based on key model, the analogy method based on time model and the analogy method based on event model are three kinds of methods of main application at present.They respectively have merits and faults: the method based on key model is applicable to the less situation of rail conducting ring length.Time-based method, though comparatively easy from modeling, brings the problem that calculated amount is large.Event triggering method is then that cost reduces calculated amount with simulation precision.

How to utilize the regenerated energy of train to be a current study hotspot effective and safe.

Summary of the invention

The embodiment provides a kind of Application way and system of regenerated energy of track train, with the regenerated energy of Optimum utilization train fully.

To achieve these goals, this invention takes following technical scheme.

An Application way for the regenerated energy of track train, comprising:

Track train produces regenerated energy according to the reduction of speed in braking deceleration process, and described regenerated energy is transferred in electrical network by described track train, by the velocity variations information transmission of described track train to train scheduling center;

After the track train needing to accelerate is determined at described train scheduling center, the speed of other track train accelerated according to described regenerated energy, described needs, positional information calculation go out acceleration/accel, described acceleration information are transferred to the described track train needing to accelerate.

Preferably, described track train produces regenerated energy according to the change of speed in braking deceleration process, comprising:

After track train receives train deceleration order, Traction Drive subsystem in described track train takes braking deceleration process, in braking deceleration process, the kinetic energy according to described track train reduces the regenerated energy producing described track train, the regenerated energy e that a jth track train produces _jcomputing formula as follows:

$e_j=\frac{1}{2}{M}_j(v_j^{\′2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

Traction Drive subsystem in described track train by current transformer by described regenerated energy e _jbe transferred in electrical network.

Preferably, described by the velocity variations information transmission of described track train to train scheduling center, comprising:

The multiple substation of train scheduling centre management, stores the administrative measure information of each substation, after described train scheduling receive centre to the velocity variations information of a jth track train, calculates the regenerated energy e of a described jth track train _j

$e_j=\frac{1}{2}{M}_j(v_j^{\′2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

After described train scheduling receive centre to the velocity variations information of all deceleration trains within the scope of a substation, after the regenerated energy that all deceleration trains within the scope of calculate substation produce is superposed, then store;

E _r＝Σe _j

E _rit is the regenerative brake gross energy that within the scope of whole substation, all deceleration trains produce.

Preferably, after the track train needing to accelerate is determined at described train scheduling center, the speed of other track train accelerated according to described regenerated energy, described needs, positional information calculation go out acceleration/accel, described acceleration information are transferred to the described track train needing to accelerate, comprise:

Described train scheduling center calculation goes out classical acceleration formula to the acceleration/accel f needing i-th the acceleration train accelerated to bring _{i (1)};

$\begin{array}{cc}{f}_{i\left(1\right)}\left(\mathrm{\Δ}x\right)=\frac{1}{\mathrm{\τ}}\left(V_i^{OPT}-v_i\right)& V^{OPT}\left({\mathrm{\Δx}}_n\right(t\left)\right)=\frac{v_{\max }}{2}\[\tanh ({\mathrm{\Δx}}_n-h_c)+\tanh \left(h_c\right)\]\end{array}$

τ is the relaxation time of the driver of described i-th acceleration train, v _maxfor the maximum speed that described i-th acceleration train is exercised, h _cfor the safety distance between vehicle, Δ x _nfor the distance between described i-th acceleration train and front truck, v _ithe speed of current time train;

Described train scheduling center calculation goes out the acceleration/accel f that described regenerated energy brings to described i-th acceleration train _{i (2);}

$f_{i\left(2\right)}\left(\mathrm{\&Delta;}v\right)=\mathrm{\&lambda;}{\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;},\mathrm{\&lambda;}=\{\begin{array}{cc}1,& {\mathrm{\&Delta;x}}_i\left(t\right)>S_m\\ 0,& {\mathrm{\&Delta;x}}_i\left(t\right)<S_m\end{array}$

${\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;}=\frac{\sqrt{{\left(M_i{v}^{\&prime;}\right)}^2+2M_i\frac{E_r}{N}}-M_i{v}^{\&prime;}}{M_i}$

M _ibe the quality of described i-th acceleration train, v' is the acceleration/accel that described i-th acceleration train is reached by the subsequent time that following distance is calculated by classical acceleration formula, '=V ^oPT

E _rbe the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation, N is the total quantity accelerating train within the scope of whole substation;

Described train scheduling center calculation goes out the total acceleration f of i-th acceleration train _i=f _{i (1)}+ f _{i (2)}, by the total acceleration f of communication system by described i-th acceleration train _iinformation transmission gives described i-th acceleration train.

Preferably, described method also comprises:

Described train controlling center controls the quantity of regenerated energy by the departure interval and/or running velocity controlling track train.

According to a further aspect in the invention, what provide a kind of regenerated energy of track train utilizes system, comprising: track train and train scheduling center;

Track train, for producing regenerated energy according to the change of speed in braking deceleration process, described regenerated energy is transferred in electrical network by described track train, by the velocity variations information transmission of described track train to train scheduling center;

Described train scheduling center, after determining the track train that needs accelerate, the speed of other track train accelerated according to described regenerated energy, described needs, positional information calculation go out acceleration/accel, described acceleration/accel are transferred to the described track train needing to accelerate.

Preferably, described track train comprises: Traction Drive subsystem and train communication subsystem;

Described train communication subsystem, after receiving train deceleration order that described train scheduling central transmission comes, gives described Traction Drive subsystem by described train deceleration command transfer;

Described Traction Drive subsystem, after receiving train deceleration order, take braking deceleration process, in braking deceleration process, kinetic energy according to described track train reduces the regenerated energy obtaining described track train, the regenerated energy e that a jth track train produces _jcomputing formula as follows:

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

By current transformer by described regenerated energy e _jbe transferred in electrical network.

Preferably, described train scheduling centre management comprises: center to center communications subsystem, regenerated energy computing module and regenerated energy memory module;

Described center to center communications subsystem, for receive the jth track train that track train transmits velocity variations information after, give described regenerated energy computing module by the velocity variations information transmission of a described jth track train;

Described regenerated energy computing module, for receive a jth track train velocity variations information after, calculate the regenerated energy e of a described jth track train _j, by described regenerated energy e _jbe transferred to regenerated energy memory module;

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

Described regenerated energy memory module, for managing multiple substation, stores the administrative measure information of each substation, after being superposed by the regenerated energy that all deceleration trains within the scope of calculate substation produce, then stores;

E _r＝Σe _j

E _rit is the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation.

Preferably, described train scheduling centre management also comprises:

Regenerated energy distribution module, for calculating classical acceleration formula to the acceleration/accel f needing i-th the acceleration train accelerated to bring _{i (1)};

$\begin{array}{cc}{f}_{i\left(1\right)}\left(\mathrm{\&Delta;}x\right)=\frac{1}{\mathrm{\&tau;}}(V_i^{OPT}-v_i)& V^{OPT}\left({\mathrm{\&Delta;x}}_n\right(t\left)\right)=\frac{v_{\max }}{2}\&lsqb;\tanh ({\mathrm{\&Delta;x}}_n-h_c)+\tanh \left(h_c\right)\&rsqb;\end{array}$

τ is the relaxation time of the driver of described i-th acceleration train, v _maxfor the maximum speed that described i-th acceleration train is exercised, h _cfor the safety distance between vehicle, Δ x _nfor the distance between described i-th acceleration train and front truck, v _ithe speed of current time train

Calculate the acceleration/accel f that described regenerated energy brings to described i-th acceleration train _{i (2)};

$f_{i\left(2\right)}\left(\mathrm{\&Delta;}v\right)=\mathrm{\&lambda;}{\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;},\mathrm{\&lambda;}=\{\begin{array}{cc}1,& {\mathrm{\&Delta;x}}_i\left(t\right)>S_m\\ 0,& {\mathrm{\&Delta;x}}_i\left(t\right)<S_m\end{array}$

${\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;}=\frac{\sqrt{{\left(M_i{v}^{\&prime;}\right)}^2+2M_i\frac{E_r}{N}}-M_i{v}^{\&prime;}}{M_i}$

M _ibe the quality of described i-th acceleration train, v' is the acceleration/accel that described i-th acceleration train is reached by the subsequent time that following distance is calculated by classical acceleration formula, v'=V ^oPT

E _rbe the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation, N is the total quantity accelerating train within the scope of whole substation;

Calculate the total acceleration f of i-th acceleration train _i=f _{i (1)}+ f _{i (2)};

Described center to center communications subsystem, for by the total acceleration f of communication system by described i-th acceleration train _ibe transferred to the Traction Drive subsystem in described i-th acceleration train.

Preferably, described train controlling center controls the quantity of regenerated energy by the departure interval and/or running velocity controlling track train.

The technical scheme provided as can be seen from the embodiment of the invention described above, the embodiment of the present invention is by being transferred to electrical network by the regenerated energy that the track train under movable block signal control condition produces in braking deceleration process, regenerated energy is transferred to acceleration train by train scheduling center again, thus can the regenerated energy of Optimum utilization train fully, improve the energy-saving effect of train.

The aspect that the present invention adds and advantage will part provide in the following description, and these will become obvious from the following description, or be recognized by practice of the present invention.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

The processing flow chart of the Application way of the regenerated energy of a kind of track train that Fig. 1 provides for the embodiment of the present invention;

A kind of regenerating braking energy transitive graph that Fig. 2 provides for the embodiment of the present invention;

The regenerated energy that Fig. 3 provides for the embodiment of the present invention and departure interval graph of a relation;

The regenerated energy that Fig. 4 provides for the embodiment of the present invention and the maximum speed limit graph of a relation of system;

The regenerated energy that Fig. 5 provides for the embodiment of the present invention and dwell time graph of a relation;

The regenerated energy that Fig. 6 provides for the embodiment of the present invention and safety distance graph of a relation;

The regenerated energy that Fig. 7 provides for the embodiment of the present invention and relaxation time graph of a relation;

The concrete structure figure utilizing system of the regenerated energy of a kind of track train that Fig. 8 provides for the embodiment of the present invention, in figure, track train 81, train scheduling center 82, Traction Drive subsystem 811, train communication subsystem 812, center to center communications subsystem 821, regenerated energy computing module 822, regenerated energy memory module 823, regenerated energy distribution module 824.

Detailed description of the invention

Be described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.

Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in specification sheets of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.

Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.

For ease of the understanding to the embodiment of the present invention, be further explained explanation below in conjunction with accompanying drawing for several specific embodiment, and each embodiment does not form the restriction to the embodiment of the present invention.

Embodiment one

Kinetic transformation, when train deceleration or braking, can be electric energy, this electric energy is input to traction power supply net as regenerated energy by the embodiment of the present invention, is equivalent to have input a regenerated energy impacted to electrical network.Then, slowing down therewith, the accelerating vehicle in train certain limit can suck above-mentioned regenerated energy from supply network, utilizes these regenerated energies to accelerate.

At present, the research of train regenerating braking energy is mainly concentrated in the development of equipment, if feedback device and closed-center system etc., have the formulation etc. of timetable in the research of operation organizational aspects, and utilize comparatively rare based on the regenerated energy of optimal speed curve.

The treatment scheme that this embodiment offers a kind of Application way of regenerated energy of track train as shown in Figure 1, comprises following treatment step:

Step S110, in the moving block system of track train, track is equipped with sensor along the line, sensor gathers the train running information such as speed, position of train, and train running information is first delivered to wireless communication repeater station by sensor, then repeater station is delivered to train scheduling center thus.

A multiple substation of train scheduling centre management, stores the administrative measure information of each substation.In Train Detection and Identification analogy method, control center is according to train diagram and the information such as train position, speed received, calculated the acceleration/accel of train by classic optimisation speed formula, produce train scheduling order, then train scheduling order is issued to the train of operation by repeater station.

When train scheduling center is according to the present speed of train and position, the distance calculated between train and objects ahead point is less than the deceleration distance threshold value of setting, then train deceleration order is issued to the train of operation by repeater station.Running train receives traffic order, last by vehicle-mounted Traction Drive subsystem, ATP (automatic train protection system, Automatic Train Protect System) and ATO (train personal vehicle system, Automatic Train Operation System) control the operation of train.

After step S120, operating train receive train deceleration order, Traction Drive subsystem in train takes braking deceleration process immediately, in braking deceleration process, the quantity of regenerated energy reduces from the kinetic energy of deceleration train to be derived, i.e. the regenerated energy e of a jth train generation _jfor:

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

Then, the regenerated energy of generation is transferred in electrical network by train, because the Traction Drive subsystem in track train is a reversible bilateral system, it can realize the conversion of electric energy to mechanical energy of traction working condition, the mechanical energy that can realize damped condition is again changed to electric energy, therefore Traction Drive subsystem by current transformer by Way of Regenerating Energy Feedback to contact system, do not need to increase new parts.

Track train by communication subsystem by the velocity variations information transmission of track train to train scheduling center, train scheduling center according to the information such as speed, position of the track train received, according to regenerated energy e above _jcomputing formula calculate the regenerated energy that single deceleration train produces, after then the regenerated energy that all deceleration trains within the scope of a substation produce being superposed, then store.

E _r＝Σe _j

Er is the regenerated energy that in whole substation task interval, all deceleration trains produce

Step S130, when train scheduling center is according to the present speed of train and position, distance between train and objects ahead point, calculated the value of the acceleration/accel of train subsequent time by the optimal velocity computing formula of classics, can judge that train needs to slow down or accelerate by this value.

Train scheduling center can obtain the train information that the needs within the scope of each substation accelerate thus, is averaged by the regenerated energy within the scope of each substation of above-mentioned storage, just obtains the obtainable regenerated energy of each acceleration train.

The acceleration and deceleration of step S140, train are by self present speed and objects ahead determining positions, and objects ahead may be train, also may be website, if train then point station apart from front truck certain distance, if website, then must accurately to stop.

In embodiments of the present invention, the acceleration/accel of train comprises two parts, and a part is the acceleration/accel f that regenerated energy brings _{i (2)}, a part is the acceleration/accel f that classical acceleration formula calculates _{i (1)}.

${\stackrel{\&CenterDot;\&CenterDot;}{x}}_i=f_{i\left(1\right)}\left(\mathrm{\&Delta;}x\right)+f_{i\left(2\right)}\left(\mathrm{\&Delta;}v\right)$

$\begin{array}{cc}{f}_{i\left(1\right)}\left(\mathrm{\&Delta;}x\right)=\frac{1}{\mathrm{\&tau;}}(V_i^{OPT}-v_i)& V^{OPT}\left({\mathrm{\&Delta;x}}_n\right(t\left)\right)=\frac{v_{\max }}{2}\&lsqb;\tanh ({\mathrm{\&Delta;x}}_n-h_c)+\tanh \left(h_c\right)\&rsqb;\end{array}$

τ is the relaxation time, v _maxfor the maximum speed that vehicle is exercised, h _cfor the safety distance between vehicle, Δ x _nwith the distance of front truck.

$f_{i\left(2\right)}\left(\mathrm{\&Delta;}v\right)=\mathrm{\&lambda;}{\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;},\mathrm{\&lambda;}=\{\begin{array}{cc}1,& {\mathrm{\&Delta;x}}_i\left(t\right)>S_m\\ 0,& {\mathrm{\&Delta;x}}_i\left(t\right)<S_m\end{array}$

${\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;}=\frac{\sqrt{{\left(M_i{v}^{\&prime;}\right)}^2+2M_i\frac{E_r}{N}}-M_i{v}^{\&prime;}}{M_i}$

M _ibe the quality of i-th acceleration train, v' is the acceleration/accel that this car is reached by the subsequent time that following distance is calculated by classical optimal velocity, E _rbe the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation, N is the interval interior total quantity accelerating train.

Train scheduling center obtains the total acceleration f of each acceleration train _i=f _{i (1)}+ f _{i (2)}.Then, train scheduling center will speed up the total acceleration f of train by communication system _ibe transferred to acceleration train, upgrade position and the speed of each train.

Train driving hourly velocity, the rule change of position, can use such as C language, C Plus Plus or Matlab language.This analog system be based on single track, unidirectional Rail Transit System in, simulation train operation conditions.At double track, under complicated situation, can by suitably having revised simulation.

The embodiment of the present invention requires that train adopts electric braking, car is equipped with Traction Drive subsystem, relates in Rail Transit System: mobile unit, trackside equipment, station and control center, traction power supply net five parts.The transitive graph of regenerating braking energy shown in Fig. 2.In figure, suppose that the acceleration/accel of train is 1.5 meter per seconds ², retro-speed is 1 meter per second ², the maximum speed of train is 15 meter per seconds, and driver's reflecting time is 2 seconds.

In simulation process, suppose that trackside equipment completes the collection of speed to train, location information, the onboard system of train obtains these information, then by radio communication, relevant data is sent to station, station again by this real-time data transmission to control center.Control center, according to receiving for information about, with reference to the train operation plan ordered, determines that the front of train follows the trail of the objective, and calculates the speed of train driving according to this, then by station, corresponding control command is sent to operating train in real time.

Experimental simulation:

The theoretical basis that this analog system realizes is that the regenerated energy that deceleration train produces feeds back to supply network, and the acceleration train in distance deceleration train certain limit, required acceleration energy can utilize the regenerated energy fed back in supply network.Regenerated energy transfer principle as shown in Figure 2, at the system cloud gray model initial stage, without train deceleration, so do not have regenerated energy to produce, after first train will slow down and enter the station, follow-up train also slows down successively, corresponding moment regenerated energy produces, and regenerated energy number be change.Therefore known, Fig. 2 simulates the production process of regenerated energy in system.

Regenerated energy provided by the invention utilizes analog control system, simulates under movable block signal control, and the operation conditions of train and regenerated energy produce and utilization obstacle.The relation of correlation parameter when regenerated energy shown in Fig. 3 ~ 7 and train operation.Fig. 3 shows and changes when the departure interval, and regenerated energy trend reduces, but one among a small circle in, regenerated energy change is violent, then regenerated energy number substantially tend towards stability.In fact, increase when the departure interval, the following distance between train widens, and the deceleration behavior of train reduces, and can regard the departure interval of 1 boundary's point at one as, and train, except entering the station and will slowing down, does not need to slow down, so regenerated energy reduces sharply At All Other Times;

And in the display of Fig. 4, then can be clear that, substantially linear between regenerated energy and maximum speed.Increase although the increase of speed is kinetic energy, but in order to ensure traffic safety, following distance also must widen, the minimizing of operational vehicle and decelerating manoeuvre, be greater than on the impact of regenerated energy the increase that speed increase brings regenerated energy, therefore regenerated energy reduces along with the increase of speed limit.Fig. 5 and 6 changes train following distance, and along with the increase of following distance, regenerated energy reduces.Several figure indicates when carrying out organizational scheduling above, and these parameters are on the impact of regenerated energy.Fig. 7 is the relation of relaxation time and regenerated energy.Relaxation time refers to the reaction time of driver, and relaxation time little expression reaction is fast.This is the impact of human factor on regenerated energy.As we can see from the figure, driver's reflection is faster, and Shaoxing opera is strong, and regenerated energy is more, and make train operation comparatively steady if driver's reflection is more gentle, then regenerated energy is just few, meets energy-conservation manipulation.These all match with practical experience or observation, demonstrate this analog system and tally with the actual situation.From these 5 figure, although the increase regenerated energy shown along with parameter is all reduction trend, the relation of regenerated energy and correlation parameter is had nothing in common with each other, and has linear, has exponentially relation, and in exponential relationship, its rate of decay is different again.

Train controlling center can by controlling the departure interval of train, and running velocity reduces deceleration, thus affects the quantity of regenerated energy, also by above measure, train can be avoided to concentrate and accelerate and require to improve to the instantaneous power output of electrical network.

Embodiment two

The regenerated energy of a kind of track train that this embodiment provides utilize system, its concrete structure as shown in Figure 8, comprising: track train 81 and train scheduling center 82;

Track train 81, for producing regenerated energy according to the change of speed in braking deceleration process, described regenerated energy is transferred in electrical network by described track train, by the velocity variations information transmission of described track train to train scheduling center;

Train scheduling center 82, after determining the track train that needs to accelerate, the speed of other track train accelerated according to described regenerated energy, described needs, positional information calculation go out acceleration/accel, described acceleration/accel are transferred to the described track train needing to accelerate.

Further, described track train 81 can comprise: Traction Drive subsystem 811 and train communication subsystem 812;

Described train communication subsystem 811, after receiving train deceleration order that described train scheduling central transmission comes, gives described Traction Drive subsystem by described train deceleration command transfer;

Described Traction Drive subsystem 812, after receiving train deceleration order, take braking deceleration process, in braking deceleration process, kinetic energy according to described track train reduces the regenerated energy obtaining described track train, the regenerated energy e that a jth track train produces _jcomputing formula as follows:

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after train deceleration, v _jit is then the rate of onset of deceleration train;

By current transformer by described regenerated energy e _jbe transferred in electrical network.

Further, described train scheduling centre management 82 comprises: center to center communications subsystem 821, regenerated energy computing module 822, regenerated energy memory module 823, regenerated energy distribution module 824;

Described center to center communications subsystem 821, for receive the jth track train that track train transmits velocity variations information after, give described regenerated energy computing module by the velocity variations information transmission of a described jth track train;

Described regenerated energy computing module 822, for receive a jth track train velocity variations information after, calculate the regenerated energy e of a described jth track train _j, by described regenerated energy e _jbe transferred to regenerated energy memory module;

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

Described regenerated energy memory module 823, for managing multiple substation, stores the administrative measure information of each substation, after being superposed by the regenerated energy that all deceleration trains within the scope of calculate substation produce, then stores;

E _r＝Σe _j

E _rit is the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation.

Regenerated energy distribution module 824, for calculating classical acceleration formula to the acceleration/accel f needing i-th the acceleration train accelerated to bring _{i (1)};

$\begin{array}{cc}{f}_{i\left(1\right)}\left(\mathrm{\&Delta;}x\right)=\frac{1}{\mathrm{\&tau;}}(V_i^{OPT}-v_i)& V^{OPT}\left({\mathrm{\&Delta;x}}_n\right(t\left)\right)=\frac{v_{\max }}{2}\&lsqb;\tanh ({\mathrm{\&Delta;x}}_n-h_c)+\tanh \left(h_c\right)\&rsqb;\end{array}$

τ is the relaxation time of the driver of described i-th acceleration train, v _maxfor the maximum speed that described i-th acceleration train is exercised, h _cfor the safety distance between vehicle, Δ x _nfor the distance between described i-th acceleration train and front truck, v _ithe speed of current time train

Calculate the acceleration/accel f that described regenerated energy brings to described i-th acceleration train _{i (2)};

$f_{i\left(2\right)}\left(\mathrm{\&Delta;}v\right)=\mathrm{\&lambda;}{\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;},\mathrm{\&lambda;}=\{\begin{array}{cc}1,& {\mathrm{\&Delta;x}}_i\left(t\right)>S_m\\ 0,& {\mathrm{\&Delta;x}}_i\left(t\right)<S_m\end{array}$

${\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;}=\frac{\sqrt{{\left(M_i{v}^{\&prime;}\right)}^2+2M_i\frac{E_r}{N}}-M_i{v}^{\&prime;}}{M_i}$

M _ibe the quality of described i-th acceleration train, v' is the acceleration/accel that described i-th acceleration train is reached by the subsequent time that following distance is calculated by classical acceleration formula, v'=V ^oPT

E _rbe the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation, N is the total quantity accelerating train within the scope of whole substation;

Calculate the total acceleration f of i-th acceleration train _i=f _{i (1)}+ f _{i (2)};

Described center to center communications subsystem 821, for by the total acceleration f of communication system by described i-th acceleration train _ibe transferred to the Traction Drive subsystem in described i-th acceleration train.

Further, described train controlling center controls the quantity of regenerated energy by the departure interval and/or running velocity controlling track train.

Carry out the detailed process of the utilization of the regenerated energy of track train with the device of the embodiment of the present invention and preceding method embodiment similar, repeat no more herein.

In sum, the embodiment of the present invention is by being transferred to electrical network by the regenerated energy that the track train under movable block signal control condition produces in braking deceleration process, regenerated energy is transferred to acceleration train by train scheduling center again, thus can the regenerated energy of Optimum utilization train fully, improve the energy-saving effect of train.

The scheme of the embodiment of the present invention can under movable block signal control condition, and the operation conditions of display train, clearly demonstrates the evolutionary process of wagon flow in real time; Adopt the method for discrete iteration, running velocity is fast; Not high to hardware requirement, realize cost low, applied range.

One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be Personal Computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the present invention or embodiment.

Each embodiment in this specification sheets all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for device or system embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.Apparatus and system embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.

The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (10)

1. an Application way for the regenerated energy of track train, is characterized in that, comprising:

Track train produces regenerated energy according to the reduction of speed in braking deceleration process, and described regenerated energy is transferred in electrical network by described track train, by the velocity variations information transmission of described track train to train scheduling center;

After the track train needing to accelerate is determined at described train scheduling center, the speed of other track train accelerated according to described regenerated energy, described needs, positional information calculation go out acceleration/accel, described acceleration information are transferred to the described track train needing to accelerate.

2. the Application way of the regenerated energy of track train according to claim 1, is characterized in that, described track train produces regenerated energy according to the change of speed in braking deceleration process, comprising:

After track train receives train deceleration order, Traction Drive subsystem in described track train takes braking deceleration process, in braking deceleration process, the kinetic energy according to described track train reduces the regenerated energy producing described track train, the regenerated energy e that a jth track train produces _jcomputing formula as follows:

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

Traction Drive subsystem in described track train by current transformer by described regenerated energy e _jbe transferred in electrical network.

3. the Application way of the regenerated energy of track train according to claim 1, is characterized in that, described by the velocity variations information transmission of described track train to train scheduling center, comprising:

The multiple substation of train scheduling centre management, stores the administrative measure information of each substation, after described train scheduling receive centre to the velocity variations information of a jth track train, calculates the regenerated energy e of a described jth track train _j

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

After described train scheduling receive centre to the velocity variations information of all deceleration trains within the scope of a substation, after the regenerated energy that all deceleration trains within the scope of calculate substation produce is superposed, then store;

E _r＝Σe _j

E _rit is the regenerative brake gross energy that within the scope of whole substation, all deceleration trains produce.

4. the Application way of the regenerated energy of track train according to claim 1, it is characterized in that, after the track train needing to accelerate is determined at described train scheduling center, the speed of other track train accelerated according to described regenerated energy, described needs, positional information calculation go out acceleration/accel, described acceleration information is transferred to the described track train needing to accelerate, comprises:

Described train scheduling center calculation goes out classical acceleration formula to the acceleration/accel f needing i-th the acceleration train accelerated to bring _{i (1)};

$\begin{array}{cc}{f}_{i\left(1\right)}\left(\mathrm{\&Delta;}x\right)=\frac{1}{\mathrm{\&tau;}}({V_i}^{OPT}-v_i)& V^{OPT}\left({\mathrm{\&Delta;x}}_n\right(t\left)\right)=\frac{v_{\max }}{2}\&lsqb;\tanh ({\mathrm{\&Delta;x}}_n-h_c)+\tanh \left(h_c\right)\&rsqb;\end{array}$

τ is the relaxation time of the driver of described i-th acceleration train, v _maxfor the maximum speed that described i-th acceleration train is exercised, h _cfor the safety distance between vehicle, Δ x _nfor the distance between described i-th acceleration train and front truck, v _ithe speed of current time train;

Described train scheduling center calculation goes out the acceleration/accel f that described regenerated energy brings to described i-th acceleration train _{i (2)};

$f_{i\left(2\right)}\left(\mathrm{\&Delta;}v\right)=\mathrm{\&lambda;}{\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;},\mathrm{\&lambda;}=\left\{\begin{array}{cc}1,& {\mathrm{\&Delta;x}}_i\left(t\right)>S_m\\ 0,& {\mathrm{\&Delta;x}}_i\left(t\right)<S_m\end{array}\right.$

${\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;}=\frac{\sqrt{{\left(M_i{v}^{\&prime;}\right)}^2+2M_i\frac{E_r}{N}}-M_i{v}^{\&prime;}}{M_i}$

M _ibe the quality of described i-th acceleration train, v' is the acceleration/accel that described i-th acceleration train is reached by the subsequent time that following distance is calculated by classical acceleration formula, '=V ^oPT

E _rbe the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation, N is the total quantity accelerating train within the scope of whole substation;

Described train scheduling center calculation goes out the total acceleration f of i-th acceleration train _i=f _{i (1)}+ f _{i (2)}, by the total acceleration f of communication system by described i-th acceleration train _iinformation transmission gives described i-th acceleration train.

5. the Application way of the regenerated energy of the track train according to any one of Claims 1-4, is characterized in that, described method also comprises:

Described train controlling center controls the quantity of regenerated energy by the departure interval and/or running velocity controlling track train.

6. track train regenerated energy utilize a system, it is characterized in that, comprising: track train and train scheduling center;

Track train, for producing regenerated energy according to the change of speed in braking deceleration process, described regenerated energy is transferred in electrical network by described track train, by the velocity variations information transmission of described track train to train scheduling center;

Described train scheduling center, after determining the track train that needs accelerate, the speed of other track train accelerated according to described regenerated energy, described needs, positional information calculation go out acceleration/accel, described acceleration/accel are transferred to the described track train needing to accelerate.

7. track train according to claim 6 regenerated energy utilize system, it is characterized in that, described track train comprises: Traction Drive subsystem and train communication subsystem;

Described train communication subsystem, after receiving train deceleration order that described train scheduling central transmission comes, gives described Traction Drive subsystem by described train deceleration command transfer;

Described Traction Drive subsystem, after receiving train deceleration order, take braking deceleration process, in braking deceleration process, kinetic energy according to described track train reduces the regenerated energy obtaining described track train, the regenerated energy e that a jth track train produces _jcomputing formula as follows:

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

By current transformer by described regenerated energy e _jbe transferred in electrical network.

8. track train according to claim 6 regenerated energy utilize system, it is characterized in that, described train scheduling centre management comprises: center to center communications subsystem, regenerated energy computing module and regenerated energy memory module;

Described center to center communications subsystem, for receive the jth track train that track train transmits velocity variations information after, give described regenerated energy computing module by the velocity variations information transmission of a described jth track train;

Described regenerated energy computing module, for receive a jth track train velocity variations information after, calculate the regenerated energy e of a described jth track train _j, by described regenerated energy e _jbe transferred to regenerated energy memory module;

$e_j=\frac{1}{2}{M}_j(v_j^{\&prime;2}-v_j^2)$

M _jthe quality of a jth train, v' _jthe speed after a jth train deceleration, v _jit is the rate of onset of a jth train;

Described regenerated energy memory module, for managing multiple substation, stores the administrative measure information of each substation, after being superposed by the regenerated energy that all deceleration trains within the scope of calculate substation produce, then stores;

E _r＝Σe _j

E _rit is the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation.

9. track train according to claim 6 regenerated energy utilize system, it is characterized in that, described train scheduling centre management also comprises:

Regenerated energy distribution module, for calculating classical acceleration formula to the acceleration/accel f needing i-th the acceleration train accelerated to bring _{i (1)};

$\begin{array}{cc}{f}_{i\left(1\right)}\left(\mathrm{\&Delta;}x\right)=\frac{1}{\mathrm{\&tau;}}({V_i}^{OPT}-v_i)& V^{OPT}\left({\mathrm{\&Delta;x}}_n\right(t\left)\right)=\frac{v_{\max }}{2}\&lsqb;\tanh ({\mathrm{\&Delta;x}}_n-h_c)+\tanh \left(h_c\right)\&rsqb;\end{array}$

τ is the relaxation time of the driver of described i-th acceleration train, v _maxfor the maximum speed that described i-th acceleration train is exercised, h _cfor the safety distance between vehicle, Δ x _nfor the distance between described i-th acceleration train and front truck, v _ithe speed of current time train

Calculate the acceleration/accel f that described regenerated energy brings to described i-th acceleration train _{i (2)};

$f_{i\left(2\right)}\left(\mathrm{\&Delta;}v\right)=\mathrm{\&lambda;}{\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;},\mathrm{\&lambda;}=\left\{\begin{array}{cc}1,& {\mathrm{\&Delta;x}}_i\left(t\right)>S_m\\ 0,& {\mathrm{\&Delta;x}}_i\left(t\right)<S_m\end{array}\right.$

${\stackrel{\&CenterDot;\&CenterDot;}{x}}_i^{\&prime;}=\frac{\sqrt{{\left(M_i{v}^{\&prime;}\right)}^2+2M_i\frac{E_r}{N}}-M_i{v}^{\&prime;}}{M_i}$

M _ibe the quality of described i-th acceleration train, v' is the acceleration/accel that described i-th acceleration train is reached by the subsequent time that following distance is calculated by classical acceleration formula, v'=V ^oPT

E _rbe the regenerative brake gross energy of the generation of deceleration train within the scope of whole substation, N is the total quantity accelerating train within the scope of whole substation;

Calculate the total acceleration f of i-th acceleration train _i=f _{i (1)}+ f _{i (2)};

Described center to center communications subsystem, for by the total acceleration f of communication system by described i-th acceleration train _ibe transferred to the Traction Drive subsystem in described i-th acceleration train.

10. the regenerated energy of the track train according to any one of claim 6 to 9 utilize system, it is characterized in that, described train controlling center controls the quantity of regenerated energy by the departure interval and/or running velocity controlling track train.