阅读说明：本技术 一种zpw2000轨道电路调试实施方法 (ZPW2000 track circuit debugging implementation method ) 是由 王艳辉 孙永武 曹英德 张磊 杨维平 洪宗皓 于 2021-08-24 设计创作，主要内容包括：本发明提供一种ZPW2000轨道电路调试实施方法,包括以下具体步骤：S1.轨道电路发送与接受电缆长度进行补偿；S2.轨道电路功出电平选择确认；S3.轨道电路接收电平选择确认；S4.本区段正向小轨道电路调整；S5.本区段反向小轨道电路调整。本发明实施方法的每个步骤思路清楚,内容简洁明了,容易理解,可操作行强,为ZPW2000轨道电路的调试提供了通用性的样板,保证了轨道电路调试工作的顺利完成。(The invention provides a ZPW2000 track circuit debugging implementation method, which comprises the following specific steps: s1, compensating the lengths of a track circuit transmitting cable and a receiving cable; s2, selecting and confirming the output level of the track circuit; s3, receiving level selection confirmation by the track circuit; s4, adjusting the forward small track circuit of the section; and S5, adjusting the reverse small track circuit of the section. The implementation method of the invention has clear thought of each step, concise and clear content, easy understanding and strong operability, provides a universal sample plate for the debugging of the ZPW2000 track circuit and ensures the smooth completion of the debugging work of the track circuit.)

1. A ZPW2000 track circuit debugging implementation method is characterized by comprising the following specific steps:

s1, compensating the lengths of a track circuit transmitting cable and a receiving cable;

s2, selecting and confirming the output level of the track circuit;

s3, receiving level selection confirmation by the track circuit;

s4, adjusting the forward small track circuit of the section;

and S5, adjusting the reverse small track circuit of the section.

2. A ZPW2000 track circuit debugging method according to claim 1, wherein the following operations are required before step S1:

the track circuit tuning unit and the hollow coil are installed;

finishing the installation of the compensation capacitor of the section;

finishing the indoor and outdoor transmission cable distribution of the section;

finishing the installation and wiring of the indoor frequency shift cabinet equipment;

and finishing the equipment installation and wiring of the indoor lightning protection integrated cabinet.

3. A ZPW2000 track circuit debugging implementation method according to claim 1, wherein in step S1, the length of the receiving end cable is LS meters, the length of the sending end cable is LF meters, and the method for measuring the length of the sending end cable comprises: the two-core cable of the sending end is in short circuit, the whole-course cable resistance P is measured by the ohmmeter for the indoor lightning protection comprehensive cabinet, the resistance value is 23.5 ohms according to the length of each kilometer of the cable, the length of the cable of the sending end is L ═ P/2x23.5, the interval cables are uniformly compensated according to 7.5 kilometers, and then the two-core cable of the sending end is in short circuit, the whole-course cable resistance P is measured by the ohmmeter, the length of the cable of the sending end is P/2x23.5, the interval cables are compensated according to 7.5 kilometers in a unified mode, and the length of the interval cables is measured by the ohmmeter

The compensation length of a cable at a transmitting end is Lf 7500-LF;

and the compensation length of the cable at the receiving end is Ls 7500-LS.

4. A ZPW2000 track circuit debugging implementation method according to claim 1, wherein the track circuit output level selection confirmation of step S2 is obtained by querying ZPW2000 track circuit adjustment reference table.

5. A ZPW2000 track circuit debugging implementation method according to claim 1, wherein the track circuit reception level selection confirmation of step S3 is obtained through a Zpw2000 single frequency attenuation redundancy controller main track reception level adjustment wiring table.

6. A ZPW2000 track circuit debugging method according to claim 1, wherein the step S4 is implemented by confirming the forward small track circuit adjustment of this section through a single frequency attenuation redundancy controller small track forward adjustment connection table.

7. A ZPW2000 track circuit debugging implementation method according to claim 1, wherein the step S5 is implemented by confirming the reverse small track circuit adjustment of this section through a single frequency attenuation redundancy controller small track reverse adjustment connection table.

Technical Field

The invention relates to the field of signal systems of junction stations of high-speed railways, in particular to a ZPW2000 track circuit debugging implementation method.

Background

The CTCS-3 level train control system is adopted for high-speed railways with the speed per hour of 250Km/h and above, and is the highest level train operation control system at present. The track circuit is used as an important component in a train control system and plays a vital role, an zpw2000 track circuit is adopted by a high-speed railway at present, the track circuit is used for continuously transmitting a track circuit low-frequency code of a train front section to a motor train unit according to the idle condition of the front section or the opening condition of an access, the motor train unit generates a speed and distance control curve according to the received low-frequency code and the line data of the front line and the combination of the temporary speed limit condition, and the running of the train is monitored. The Zpw2000 track circuit debugging aims to ensure that the strength of low-frequency code signals transmitted on the track surface of the track circuit is basically consistent even if the cable transmission lengths of outdoor track circuit sections and indoor equipment are different, further ensure that the strength of low-frequency code signals sensed by a coil of a motor train unit is basically consistent, further ensure that the decoded signal strength is basically consistent, ensure the stable running of locomotive signal display and ensure the driving safety.

Disclosure of Invention

The invention aims to provide a ZPW2000 track circuit debugging implementation method which is strong in universality, clear and ensures that the track circuit debugging is efficiently, quickly and accurately completed.

The technical scheme of the invention is as follows:

a ZPW2000 track circuit debugging implementation method comprises the following specific steps:

s1, compensating the lengths of a track circuit transmitting cable and a receiving cable;

s2, selecting and confirming the output level of the track circuit;

s3, receiving level selection confirmation by the track circuit;

s4, adjusting the forward small track circuit of the section;

and S5, adjusting the reverse small track circuit of the section.

The following operations are also required before step S1 is performed:

the track circuit tuning unit and the hollow coil are installed;

finishing the installation of the compensation capacitor of the section;

finishing the indoor and outdoor transmission cable distribution of the section;

finishing the installation and wiring of the indoor frequency shift cabinet equipment;

and finishing the equipment installation and wiring of the indoor lightning protection integrated cabinet.

In the step S1, the length of the receiving-end cable is LS meters, the length of the transmitting-end cable is LF meters, and the method for measuring the length of the transmitting-end cable comprises the following steps: the two-core cable of the sending end is in short circuit, the whole-course cable resistance P is measured by the ohmmeter for the indoor lightning protection comprehensive cabinet, the resistance value is 23.5 ohms according to the length of each kilometer of the cable, the length of the cable of the sending end is L ═ P/2x23.5, the interval cables are uniformly compensated according to 7.5 kilometers, and then the two-core cable of the sending end is in short circuit, the whole-course cable resistance P is measured by the ohmmeter, the length of the cable of the sending end is P/2x23.5, the interval cables are compensated according to 7.5 kilometers in a unified mode, and the length of the interval cables is measured by the ohmmeter

The compensation length of a cable at a transmitting end is Lf 7500-LF;

and the compensation length of the cable at the receiving end is Ls 7500-LS.

The track circuit work level selection confirmation of step S2 is obtained by querying zpw2000 track circuit adjustment reference table.

The rail circuit receiving level selection confirmation of the step S3 is obtained through a main rail receiving level adjusting wiring table of Zpw2000 single-frequency attenuation redundancy controller of the rail circuit.

And step S4, the adjustment of the forward small track circuit of the section is confirmed by a single-frequency attenuation redundant controller small track forward adjustment wiring table.

And step S5, the adjustment of the reverse small track circuit of the section is confirmed by a single-frequency attenuation redundancy controller small track reverse adjustment wiring table.

Compared with the prior art, the invention has the beneficial effects that: the implementation method has the advantages of clear thought of each step, concise and clear content, easy understanding and strong operability, provides a universal sample plate for the debugging of the ZPW2000 track circuit, and ensures the smooth completion of the debugging work of the track circuit.

Drawings

FIG. 1 is a schematic flow chart of the method of the present invention.

Fig. 2 is a schematic diagram of a track circuit of the high-speed railway of the present invention.

FIG. 3 is a schematic diagram of a track circuit of an inter-zone bridge segment according to the present invention.

Fig. 4 is a schematic diagram of the track circuit for forward travel on a road in accordance with the present invention.

Fig. 5 is a schematic diagram of the track circuit for the invention running in the reverse direction of the track.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Application scope

The invention is suitable for debugging all ZPW2000 track circuits.

Zpw2000 track circuit system constitution

ZPW2000 track circuit indoor equipment: the system mainly comprises a transmitter, a receiver and a lightning protection simulation network disk;

ZPW2000 track circuit outdoor equipment: the cable mainly comprises a hollow coil, a tuning matching unit and indoor and outdoor equipment.

ZPW2000 track circuit equipment function

A transmitter: and transmitting the low-frequency codes to an outdoor track circuit through a lightning protection analog network disk by selecting a supply level matched with the section according to the low-frequency codes compiled by the train control center.

A receiver: the method comprises the steps of transmitting track circuit signals of an outdoor track circuit through a lightning protection simulation network disk, selecting a certain receiving level, solving signals with a certain amplitude to drive the suction of a section track circuit relay, and further judging whether the outdoor corresponding track circuit has vehicle occupation (the relay sucks up, no vehicle occupation exists, the outdoor corresponding track circuit is idle, or the outdoor corresponding track circuit has vehicle occupation).

Lightning protection simulation network dish: the resistance of the cable length of a certain length (7.5 km in an interval and 10km in a station) is compensated for uniformly transmitting and receiving cables in each section, so that the signal strength transmitted to the track surfaces of different track circuits is basically consistent.

Tuning matching unit: the signals transmitted to the outdoor track circuit are filtered, and only the signals with consistent carrier frequencies can be transmitted to the rail surface through the tuning matching unit to play a role in filtering.

An air-core coil: on one hand, the traction currents of the two steel rails are balanced, on the other hand, the two steel rails, the tuning matching unit and the small track circuit form a tuning circuit together, and signals of adjacent sections are filtered. It is ensured that only the track circuit signal of the local section is transmitted to the track surface of the local section.

The ZPW2000 track circuit debugging implementation method mainly comprises 5 steps: firstly, the method comprises the following steps: transmit and receive cable compensation; secondly, the method comprises the following steps: the sector successfully outputs level selection confirmation; thirdly, the method comprises the following steps: the section accepts level selection and determination; fourthly: adjusting the forward small track of the section; fourthly: the section is adjusted by small reverse tracks. As shown in fig. 1.

At present, high-speed railways are double-line lines, one line is called an uplink line, and the other line is called a downlink line. The carrier frequency of the track circuit of the uplink line adopts 2000HZ and 2600HZ, and the selection type is-1, -2; the descending line adopts 1700HZ, 2300HZ and the selection type is-1 and-2. Meanwhile, the carrier frequencies of adjacent sections are required to be inconsistent, and the-1-2 type selection and the-2 type selection are alternately configured. As shown in fig. 2:

zpw2000 method for electric rail test: the first step is as follows: the track circuit sends and receives cable compensation; taking the track circuit of the inter-zone bridge section as an example, as shown in fig. 3:

from the above fig. 3, it is known that the length of the receiving end cable of the 1111 section track circuit is 3950m, and the length of the transmitting end cable is 3000m (a transmitting end cable length measuring method is to short-circuit the two-core cable at the transmitting end, measure the whole-course cable resistance P by using an ohmmeter in an indoor lightning protection integrated cabinet, and according to the resistance value of the cable per kilometer being 23.5 ohms (20 ℃), the length of the cable at the transmitting end is L ═ P/2x 23.5). The interval cable is uniformly compensated according to 7.5Km, then

The compensation length of the cable at the transmitting end is Lf 7500-3000-4500 m;

the compensation length of the receiving end cable is Ls which is 7500 and 3950 which is 3550 m;

the total length of the interval is 7.5km, the compensation length of the lightning protection simulation network disk cable adjusts the wiring table, as the following table 1:

TABLE 1

According to the calculated compensation length of the 1111 section sending and receiving ends, the following steps are obtained: the 1111 sector transmitting end compensation length is 4500m, and the table look-up 1 obtains a corresponding table as follows: number 19, terminal seal line is: 3-9,4-10,11-25,12-26,27-29,28-30, that is, the terminal corresponding to the serial number 19 is connected well by the lightning protection analog network disk block line segment daughter board at the sending end of the 1111 section of the indoor lightning protection integrated cabinet; the 1111 sector receiving end compensation length is 3550m, and the table 1 is looked up to obtain the corresponding table: number 15, terminal seal line is: 3-9,4-10,11-13,12-14,15-17,16-18,19-29,20-30, that is, the terminal corresponding to the serial number 15 is connected well by the lightning protection analog network disk block line segment daughter board at the receiving end of the indoor lightning protection integrated cabinet 1111 segment. And completing the compensation of the cables at the transmitting end and the receiving end of all other track sections in the same way.

The second step is that: the track circuit outputs level selection confirmation;

the track circuit has three types, namely a track circuit of a ballastless bridge section; a roadbed section track circuit; tunnel segment track circuits. The track circuit length is from 300m to 1000 m. The selection of the power level of the track circuit with different lengths in different types of sections is different, and a 1111 section is taken as an example for explanation;

the table of the parameters of the 1-10 stage power output level of the track circuit is shown in table 2:

TABLE 2

Level stage	Connecting terminal	Voltage (S1, S2) V
			1	1-11 9-12	161-170
2	2-11 9-12	146-154
			3	3-11 9-12	126-137
4	4-11 9-12	103-112
			5	5-11 9-12	73-80
6	1-11 4-12	60-67
			7	3-11 5-12	54-60
8	2-11 4-12	44-48
			9	1-11 3-12	37-41
10	4-11 5-12

From fig. 3 it can be seen that: the 1111 segment is a track circuit of a ballastless bridge, the length of the track circuit is 950m, and the carrier frequency is 2300-2.

The carrier frequency 2300HZ ballastless bridge zpw2000 track circuit adjustment reference table is shown in table 3.

TABLE 3

2300HZ

The 1111 segment is a track circuit of a ballastless bridge, the length of the track circuit is 950m, the carrier frequency is 2300-2, and the following are found out from the table 3: the 1111 sector of the track circuit length 950m corresponds to the table with the serial number of 13, and the power level is 1 level. The following were found from Table 2: the 1111 sector transmitter should select level 1, requiring terminals on the back side of the transmitter: 1-11,9-12.

The third step: the track circuit receives a level selection acknowledgement;

from Table 4, the carrier frequency 2300HZ is found, and the reception level of 1111 segments with the track circuit length of 950m is 20 levels, as shown in Table 4.

TABLE 4

Zpw2000 track circuit single frequency attenuation redundant controller main track receiving level adjusting wiring table, table 5.

TABLE 5

From table 5 it can be seen that: the connection terminals of the 20-level reception level of the 1111 sector are: J2-16-J2-10, J2-17-J2-11 and J2-8-J2-12, namely, after the 1111 section redundancy attenuation controller, a J2 section sub-board connects 16 with 10, 17 with 11 and 8 with 12 at the same time, and then the receiving level adjustment of the 1111 section is completed.

After the adjustment of the sending level and the receiving level of the 1111 sections is finished, the signal voltage level with the carrier frequency of 2300HZ measured by the frequency shift meter by the test hole which is inserted into the front surface of the attenuation box meets the following requirements: 1.394v < Uv (1111) <2.389v (Ur (1111) is 1111 segment rail signal voltage). The voltage level of the main output signal of the 1111 track segment should satisfy: 0.240v < Ur (1111) <0.412v (Uv (1111) is 1111 sector main track-out signal), to drive 1111 sector track relay to suck up, indicating 1111 sector track circuit is idle.

The fourth step: adjusting a forward small track circuit of the section;

when the line is running in the forward direction, the receiving end of the section not only receives the signal transmitted by the transmitting end of the section through the main track, but also receives the signal transmitted by the transmitter of the next 1109 section through the small track, as shown in fig. 4.

The single-frequency attenuation redundant controller small track forward adjustment wiring table is shown in table 6.

Small track output voltage requirements: 155mv +/-10 mv.

TABLE 6

Two signals measured by a frequency shift meter in a test hole are guided into the front face of the attenuation box in the 1111 section, one signal with the carrier frequency of 2300-2HZ, one signal with the carrier frequency of 1700-1HZ transmitted by a small track in the adjacent 1109 section, and the signal with the carrier frequency of 1700-1HZ is measured to be 74mv, namely the small track signal in the 1111 section, which is obtained through the table 6, the terminals to be connected are J3-1-J3-2, J3-3-J3-4, J3-6-J3-11, namely a J3 sub-board on the back face of the redundancy controller in the 1111 section, and the small track forward adjustment of the 1111 section can be completed by connecting 1 with 2, connecting 3 with 4, and connecting 6 with 11. The voltage of the 1700-1HZ signal measured by the frequency shift meter in the 1111 section of the small-track test hole of the attenuation box is about 155 mv.

The fifth step: adjusting a reverse small track circuit of the section;

under the reverse driving of the line, the receiving end of the segment not only receives the signal transmitted from the transmitting end of the segment through the main track, but also receives the small track signal transmitted from the transmitter of the next segment 1113 under the reverse driving through the small track, as shown in fig. 5 below.

The single frequency attenuation redundant controller small track reverse regulation wiring table is shown in table 7.

The requirement of adjusting the output voltage of the reverse small track is as follows: 155mv +/-10 mv.

TABLE 7

Two signals measured by a frequency shift meter are guided into a test hole on the front surface of the attenuation box in the 1111 section, one is a reverse signal with the carrier frequency of 2300-2HZ, one is a signal transmitted by a small track from the adjacent 1113 section with the carrier frequency of 1700-2HZ reverse, the signal of 1700-2HZ is supposed to be 77mv, namely the signal of the small track in the 1111 section reverse, the signal is obtained through a table 7, the terminals to be connected are J3-17-J3-22, namely the J3 sub-plate on the back surface of the redundancy controller in the 1111 section, and the small track reverse adjustment of the 1111 section can be completed by connecting 17 and 22. The voltage of the 1700-2HZ signal measured by the frequency shift meter in the 1111 section of the small-track test hole of the attenuation box is about 155 mv.

It can be known from the above that, the ZPW2000 track circuit debugging implementation method is composed of 5 steps, each step of the implementation method is clear in thought, concise and clear in content, easy to understand, and strong in operability, and provides a universal sample plate for the ZPW2000 track circuit debugging, thereby ensuring the smooth completion of the track circuit debugging work.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.