阅读说明：本技术 风力发电机组wp4084系统的通讯防雷方法 (Communication lightning protection method of WP4084 system of wind generating set ) 是由 吴增辉 裴跃辉 孔金良 李建华 高国青 范晓飞 王彦龙 张志强 于 2021-06-24 设计创作，主要内容包括：一种风力发电机组WP4084系统的通讯防雷方法。目前现有技术机组的防雷措施存在较大的缺陷与不足,经常遭到雷击,直接影响风力发电设备的安全运行。本发明该方法包括如下步骤：(1)WP351模块com 2口侧接线：将通讯线网状屏蔽线剥离成区域5,所剥离的屏蔽线与延长导线通过线鼻子进行紧团,并使用电工胶带将所述的区域5处屏蔽层包裹住,以防与搂地母线铜排相接触；(2)机舱柜内X:12端子排侧接线：将柜内WP4084模块通讯连接线的“5"处屏蔽线剥离；并将该通讯连接线的屏蔽层通过线鼻子与延长导线短接,并使用电工胶带将屏蔽线包裹,以防外漏与其他线缆接触；(3)WP4084模块的安装接地：检查WP4084安排固定方式。本发明用于风力发电机组WP4084系统的通讯防雷方法。(A communication lightning protection method of a WP4084 system of a wind generating set. The lightning protection measures of the prior art unit have great defects and shortcomings, and the safe operation of the wind power generation equipment is directly influenced by frequent lightning strikes. The method comprises the following steps: (1) WP351 module com2 port side wiring: stripping a communication wire mesh-shaped shielding wire into an area 5, tightly bunching the stripped shielding wire and an extension lead through a wire nose, and wrapping a shielding layer at the area 5 by using an electrical adhesive tape so as to prevent the shielding wire from contacting a ground-hugged bus copper bar; (2) connecting wires at the X:12 terminal row side in the cabin cabinet: stripping a shielding wire at the position of '5' of the WP4084 module communication connecting wire in the cabinet; the shielding layer of the communication connecting line is in short circuit with the extension lead through a line nose, and the shielding line is wrapped by an electrical adhesive tape to prevent the leakage from contacting other cables; (3) mounting ground of WP4084 module: WP4084 arrangement is checked for fixturing. The invention relates to a communication lightning protection method for a WP4084 system of a wind generating set.)

1. A communication lightning protection method of a WP4084 system of a wind generating set is characterized in that: the method comprises the following steps:

(1) WP351 module com2 port side wiring:

stripping a communication wire mesh-shaped shielding wire into an area 5, tightly bunching the stripped shielding wire and an extension lead through a wire nose, and wrapping a shielding layer at the area 5 by using an electrical adhesive tape so as to prevent the shielding wire from contacting a ground-hugged bus copper bar;

selecting a group of blue and white lines in the communication line: the X11:1 and the X11:2 are used as signal feedback lines and correspond to a '3' line and a '4' line of the com2 of the WP351 module, and the shield line extension line '5' is in short circuit with one grounding line;

respectively connecting short-circuited outgoing lines of a 3 line and a 4 line to a pin3 port and a pin4 port of a WP351 module com2, and respectively connecting short-circuited 100 omega resistors between short-circuited extension lines of the 3 line and the 4 line and an extension line of a 5 line to a pin1 port and a pin2 port of a WP351 module com 2; the 5-line is respectively connected with a pin6 port and a pin5 port of the WP351 module com2 after being pressed by a wire nose;

after a com2 port cable of the WP351 module is connected, a resistance between a pin1 and a pin2 in com2 is measured to be 100 omega by using an ohm shift of a multimeter;

(2) connecting wires at the X:12 terminal row side in the cabin cabinet:

stripping a shielding wire at the position of '5' of the WP4084 module communication connecting wire in the cabinet; the shielding layer of the communication connecting line is in short circuit with the extension lead through a line nose, and the shielding line is wrapped by an electrical adhesive tape to prevent the leakage from contacting other cables;

selecting a blue-white line '3' line and a blue-white line '4' line in the communication line, marking and using a line nose to press lines;

stripping a shielding wire of the WP4084 module side communication wire, and pressing the shielding wire and the extension lead by using a wire nose; wiring was performed as follows:

TABLE 1X 12 terminal row connection

(3) Mounting ground of WP4084 module:

checking a WP4084 arrangement fixing mode, if the bottom of the WP4084 module is fixed by 4 screws, polishing and removing paint at the position of a cabin base mounting hole and near a mounting hole of a bottom plate of the WP4084 module, and adding a grounding gasket; according to the WP4084 module, 2 screws are used for fixing the bottom, the plane of the installation position of the cabin base and the WP4084 bottom plate are ground and subjected to paint removal, and conductive paste is coated, so that the WP4084 shell is fully grounded.

Technical Field

The invention relates to the technical field of wind power generation equipment, in particular to a communication lightning protection method of a WP4084 system of a wind generating set.

Background

Wind power generation equipment generally sets up in open valley, on the mountain in summer and autumn, and the frequent wind generating set thunderstorm of thunderbolt is many, the main thunderbolt problem that appears in the scene, and the lightning protection measure of prior art's unit exists great defect and not enough at present, often suffers the thunderbolt, directly influences wind power generation equipment's safe operation.

Disclosure of Invention

The invention aims to provide a communication lightning protection method of a WP4084 system of a wind generating set, which is mainly used for carrying out lightning protection optimization on the wind generating set frequently struck by lightning in open valleys, increasing a surge protector, improving a line pressing process, reducing the damage of the lightning strike and improving the operating efficiency of the set.

The above purpose is realized by the following technical scheme:

a communication lightning protection method of a WP4084 system of a wind generating set comprises the following steps:

(1) WP351 module com2 port side wiring:

stripping a communication wire mesh-shaped shielding wire into an area 5, tightly bunching the stripped shielding wire and an extension lead through a wire nose, and wrapping a shielding layer at the area 5 by using an electrical adhesive tape so as to prevent the shielding wire from contacting a ground-hugged bus copper bar;

selecting a group of blue and white lines in the communication line: the X11:1 and the X11:2 are used as signal feedback lines and correspond to a '3' line and a '4' line of the com2 of the WP351 module, and the shield line extension line '5' is in short circuit with one grounding line;

respectively connecting short-circuited outgoing lines of a 3 line and a 4 line to a pin3 port and a pin4 port of a WP351 module com2, and respectively connecting short-circuited 100 omega resistors between short-circuited extension lines of the 3 line and the 4 line and an extension line of a 5 line to a pin1 port and a pin2 port of a WP351 module com 2; the 5-line is respectively connected with a pin6 port and a pin5 port of the WP351 module com2 after being pressed by a wire nose;

after a com2 port cable of the WP351 module is connected, a resistance between a pin1 and a pin2 in com2 is measured to be 100 omega by using an ohm shift of a multimeter;

(2) connecting wires at the X:12 terminal row side in the cabin cabinet:

stripping a shielding wire at the position of '5' of the WP4084 module communication connecting wire in the cabinet; the shielding layer of the communication connecting line is in short circuit with the extension lead through a line nose, and the shielding line is wrapped by an electrical adhesive tape to prevent the leakage from contacting other cables;

selecting a blue-white line '3' line and a blue-white line '4' line in the communication line, marking and using a line nose to press lines;

stripping a shielding wire of the WP4084 module side communication wire, and pressing the shielding wire and the extension lead by using a wire nose; wiring was performed as follows:

TABLE 1X 12 terminal row connection

(3) Mounting ground of WP4084 module:

checking a WP4084 arrangement fixing mode, if the bottom of the WP4084 module is fixed by 4 screws, polishing and removing paint at the position of a cabin base mounting hole and near a mounting hole of a bottom plate of the WP4084 module, and adding a grounding gasket; according to the WP4084 module, 2 screws are used for fixing the bottom, the plane of the installation position of the cabin base and the WP4084 bottom plate are ground and subjected to paint removal, and conductive paste is coated, so that the WP4084 shell is fully grounded.

Has the advantages that:

1. the invention mainly provides a communication lightning protection method of a WP4084 system of a wind generating set, which overcomes the defect that the set equipment in the prior art is frequently struck by lightning, carries out lightning protection optimization design aiming at the wind generating set frequently struck by lightning in open valleys, increases a surge protector, improves a line pressing process, effectively reduces the damage caused by the lightning, improves the running efficiency of the set and ensures the safe running of the wind generating set.

The communication wire mesh-shaped shielding wire is grounded, so that the self device of the lightning protection module is effectively protected, the lightning stroke quantity led by the lightning current communication module is reduced compared with that before the communication wire mesh-shaped shielding wire is not modified, the lightning stroke quantity led by the lightning current communication module is rapidly dispersed to the ground from a lightning stroke point, and the safety performance of equipment is improved.

The mounting mode of the WP4084 module shell is optimized, the module shell is not conducted with a grounding system of a wind generating set before optimization, the WP4084 module shell is fully grounded after polishing and paint removal optimization, the length of a grounding connecting line is shortened by multipoint large-area grounding, parasitic inductance of the grounding connecting line is reduced, and lightning current is enhanced to be rapidly led into a ground grounding grid.

Description of the drawings:

FIG. 1 is one of the port side wiring diagrams of the WP351 module com2 of the invention.

FIG. 2 is a second connection diagram of the com2 port side of the WP351 module of the invention.

Fig. 3 is a side wiring diagram of the X:12 terminal block in the cabin cabinet of the present invention.

Figure 4 is a schematic illustration of the mounting ground of the WP4084 module of the present invention.

Figure 5 is an electrical schematic diagram of the optimized lightning protection connection of the WP4084 module and the X11 terminal block communication wire of the present invention.

The specific implementation mode is as follows:

example 1:

a communication lightning protection method of a WP4084 system of a wind generating set comprises the following steps: (1) WP351 module com2 port side wiring:

stripping a communication wire mesh-shaped shielding wire into an area 5, tightly bunching the stripped shielding wire and an extension lead through a wire nose, and wrapping a shielding layer at the area 5 by using an electrical adhesive tape so as to prevent the shielding wire from contacting a ground-hugged bus copper bar;

selecting a group of blue and white lines in the communication line: the X11:1 and the X11:2 are used as signal feedback lines and correspond to a '3' line and a '4' line of the com2 of the WP351 module, and the shield line extension line '5' is in short circuit with one grounding line;

respectively connecting short-circuited outgoing lines of a 3 line and a 4 line to a pin3 port and a pin4 port of a WP351 module com2, and respectively connecting short-circuited 100 omega resistors between short-circuited extension lines of the 3 line and the 4 line and an extension line of a 5 line to a pin1 port and a pin2 port of a WP351 module com 2; the 5-line is respectively connected with a pin6 port and a pin5 port of the WP351 module com2 after being pressed by a wire nose;

after a com2 port cable of the WP351 module is connected, a resistance between a pin1 and a pin2 in com2 is measured to be 100 omega by using an ohm shift of a multimeter;

(2) connecting wires at the X:12 terminal row side in the cabin cabinet:

stripping a shielding wire at the position of '5' of the WP4084 module communication connecting wire in the cabinet; the shielding layer of the communication connecting line is in short circuit with the extension lead through a line nose, and the shielding line is wrapped by an electrical adhesive tape to prevent the leakage from contacting other cables;

selecting a blue-white line '3' line and a blue-white line '4' line in the communication line, marking and using a line nose to press lines;

stripping a shielding wire of the WP4084 module side communication wire, and pressing the shielding wire and the extension lead by using a wire nose; wiring was performed as follows:

TABLE 1X 12 terminal row connection

(3) Mounting ground of WP4084 module:

checking a WP4084 arrangement fixing mode, if the bottom of the WP4084 module is fixed by 4 screws, polishing and removing paint at the position of a cabin base mounting hole and near a mounting hole of a bottom plate of the WP4084 module, and adding a grounding gasket; according to the WP4084 module, 2 screws are used for fixing the bottom, the plane of the installation position of the cabin base and the WP4084 bottom plate are ground and subjected to paint removal, and conductive paste is coated, so that the WP4084 shell is fully grounded.