CN111181141A - Relay protection device and method for distribution line of transformer substation - Google Patents
Relay protection device and method for distribution line of transformer substation Download PDFInfo
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- CN111181141A CN111181141A CN202010150186.4A CN202010150186A CN111181141A CN 111181141 A CN111181141 A CN 111181141A CN 202010150186 A CN202010150186 A CN 202010150186A CN 111181141 A CN111181141 A CN 111181141A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000008439 repair process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a substation distribution line relay protection device and a protection method, belongs to the technical field of distribution line relay protection control, and relates to a substation distribution line relay protection device and a protection method for wirelessly transmitting fault data information. The device comprises a transmitting part and a receiving part, wherein the transmitting part is provided with a shell, a circuit board is arranged in the shell, and a relay protection measurement and control unit, a wireless transmission unit and a fault data transmitting functional unit are arranged on the circuit board; the receiving part is a master control host and a data receiving terminal which are in wired or wireless connection with the sending part; the relay protection measurement and control unit is connected with the fault data sending functional unit, the fault data sending functional unit is connected with the wireless transmission unit, and the measurement and control fault data are sent to the master control host and the data receiving terminal. The method greatly shortens the learning time of fault data, shortens the time for emergency repair preparation work and emergency treatment work of each professional, and greatly improves social benefits.
Description
Technical Field
The invention discloses a substation distribution line relay protection device and a protection method, belongs to the technical field of distribution line relay protection control, and relates to a substation distribution line relay protection device and a protection method for wirelessly transmitting fault data information.
Background
When a line fault trips, the current substation distribution line relay protection device transmits fault information in two types: one is that protective device information is transmitted to a substation master control through 485 or optical fibers to send a fault signal, the device records fault data, the master control finally sends the fault signal to a dispatching department through a D5000 system, and a dispatching attendant issues the fault signal and a maintenance instruction to maintenance and operation personnel; the other method is that the protection device information is wirelessly transmitted to a substation master controller to send a fault signal, the device records fault data, the master controller finally sends the fault signal to a dispatching department through a D5000 system, and a dispatching attendant issues the fault signal and a maintenance instruction to maintenance and operation personnel.
The two methods have the biggest defect that no matter a dispatcher, a maintenance and an operator know signals (such as a line quick-break action and a line overcurrent action), fault data (such as fault current, fault voltage and fault time) cannot be mastered in time, a substation device needs to be called to read fault records on site to know, and the requirements on the rapidity and the accuracy of the current maintenance are different. Meanwhile, when the maintenance operator arrives at the site, manpower and material resources are wasted, the fault clearing time is prolonged, the power failure time is prolonged, the power consumption of the user is influenced, the power supply amount is reduced, and certain economic influence is brought to the user and an enterprise.
The D5000 system is a basic platform of a new generation of intelligent power grid dispatching technology support system, integrates various data such as dispatching plans, water inflow conditions, meteorological changes and the like, and can perform comprehensive analysis; in the past, a dispatching control center needs to maintain data of a plurality of platforms, and only one set of data needs to be maintained after a D5000 system is used.
Disclosure of Invention
The invention aims to provide a distribution line relay protection device and a protection method for a transformer substation, aiming at the defects, the wireless data transmission of the distribution line relay protection measurement and control device is realized, the method is simple and easy to implement, the fault data information transmission process and time can be greatly reduced, and certain economic benefits and social benefits are brought to power supply enterprises, users and society.
The invention is realized by adopting the following technical scheme:
the relay protection device for the distribution line of the transformer substation comprises a transmitting part and a receiving part, wherein the transmitting part is provided with a shell, a circuit board is arranged in the shell, and a relay protection measurement and control unit, a wireless transmission unit and a fault data transmitting functional unit are arranged on the circuit board; the receiving part is a master control host and a data receiving terminal machine which are in wired or wireless connection with the sending part, the master control host is arranged in a master control room, and the data receiving terminal machine is respectively arranged in a scheduling department, an overhaul department, an operation and maintenance department and a leader department.
The relay protection measurement and control unit is connected with the fault data sending functional unit, the fault data sending functional unit is connected with the wireless transmission unit, and the measurement and control fault data are sent to the master control host and the data receiving terminal.
The master control host and the data receiving terminal can also transmit data through a wireless communication module, and the wireless communication module adopts a wireless communication module sold in the market.
The relay protection measurement and control unit adopts a commercially available MTC-3 measurement and control unit and is responsible for all processes of collecting various data and outputting control, and the collected data are uploaded to the data receiving terminal and the host. The MTC-3 measurement and control unit is a distributed control and protection system and integrates five functions of protection, remote control, remote measurement, remote signaling and remote regulation; the protection and the monitoring are relatively independent and organically combined, so that hardware resources are fully utilized, the integrity and the independence of relay protection are ensured, and the device is ideal type selection equipment for comprehensive automation of a 110(35) kV transformer substation.
A measurement and control protection method of a relay protection measurement and control device of a distribution line of a transformer substation comprises the following steps:
1) working with a host;
1-1) when the relay protection measurement and control unit works, the detected fault data is transmitted to a host computer in a wired or wireless mode;
1-2) the host informs a dispatcher and sends an instruction of maintenance or operation to the dispatcher;
2) working cooperatively with the data receiving terminal;
1-1) when the relay protection measurement and control unit works, the detected fault data is transmitted to a data receiving terminal machine in a wireless mode through a fault transmitting functional unit;
1-2) when the data receiving terminal machine is arranged in a dispatching department, after receiving the information, a dispatcher contacts with an operator, a maintainer and a responsible leader to perform next fault treatment;
when the data receiving terminal machine is arranged in a maintenance department, a maintenance worker can timely process the fault after receiving the information;
when the data receiving terminal is arranged in an operation maintenance department, operation and maintenance personnel receive the information and then issue a protection action starting instruction aiming at the fault condition, and the instruction timely informs maintainers, scheduling personnel and leaders in charge;
and when the data receiving terminal machine is arranged in the leader department, the leader can know the fault condition at the first time after receiving the information.
The wireless transmission unit adopts a commercially available Exynos Modem5100 (Modem) to support a 4G/5G power private network.
The fault data sending functional unit adopts a PCS-9611D type line protection measurement and control device produced by Nanjing Reyangbao electric company Limited and is provided with a CPU unit and an Exynos Modem5100 transmission unit.
The data receiving terminal adopts a handset with an unlimited sending and receiving function sold in the market.
The invention has the advantages that:
the protection, measurement and control device has two ways for sending fault information, the first way is the same as the original fault transmission and keeps the same flow, namely the device-master control-D5000 system-scheduling- (sending instructions to the maintenance and operation by a dispatcher) -the maintenance operator sees data on site; in the second approach, the protection measurement and control device simultaneously sends the fault data recorded by the device to specific relevant personnel (a dispatcher, a maintainer, an operator, a leader and N clients holding the data receiving terminal). The method greatly shortens the learning time of fault data, shortens the time for emergency repair preparation work and emergency treatment work of each professional, and greatly improves social benefits.
Drawings
The invention will be further explained with reference to the drawings, in which:
FIG. 1 is a block schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic diagram of protection action initiation fault data signaling of the method of the present invention;
fig. 3 is a schematic block diagram of a fault data transmission path in use of the apparatus of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings 1 to 3 and specific embodiments.
Referring to the attached figure 1, the relay protection device for the distribution line of the transformer substation comprises a transmitting part and a receiving part, wherein the transmitting part is provided with a shell, a circuit board is arranged in the shell, and a relay protection measurement and control unit, a wireless transmission unit and a fault data transmitting functional unit are arranged on the circuit board; the receiving part is a master control host and a data receiving terminal machine which are in wired or wireless connection with the sending part, the master control host is arranged in a master control room, and the data receiving terminal machine is respectively arranged in a scheduling department, an overhaul department, an operation and maintenance department and a leader department. The relay protection measurement and control unit is connected with the fault data sending functional unit, the fault data sending functional unit is connected with the wireless transmission unit, and the measurement and control fault data are sent to the master control host and the data receiving terminal. The master control host and the data receiving terminal can also transmit data through wireless communication.
Referring to the attached figure 2, when the device of the invention operates, when a distribution line fault trips, a tripping signal (protection action) is sent, the measurement and control unit sends the signal to the fault data sending functional unit, the fault data sending functional unit transmits the content in the protection device to a data receiving terminal (namely, a handset of the dispatcher, the maintainer and the like) through the wireless transmission unit, and the data receiving terminal receives a fault data short message file, so that related technical personnel can obtain the same fault data content as the field protection device, the time for removing the device is saved, and the device can be more quickly put into field fault removal.
Fig. 3 is a schematic block diagram of a fault data transmission path when the device of the present invention is used, that is, a fault signal transmission and processing flow chart after the present invention is applied. Because the communication mode of the device has wired and wireless functions, the device is used as a dispatcher of a central command system of an electric power company, on one hand, a protection signal (without protection data) is transmitted to a dispatching desk through a D5000 system through an original wired intranet, the D5000 system gives an alarm to inform the dispatcher, and the dispatcher issues a power grid emergency repair command according to the signal transmitted by the D5000 system; on the other hand, the fault data sending function unit sends the fault data content to the operation, maintenance and dispatching personnel and the data receiving terminal machine responsible for leading the corresponding fault data through the wireless 4G/5G network through the wireless transmission unit, so that the fault data is instantly notified to the relevant personnel, the fault can be timely processed, the fault processing flow is shortened, the power supply recovery time is shortened, and the power supply reliability and the power grid operation economy are improved.
Claims (4)
1. The utility model provides a distribution lines relay protection device of transformer substation which characterized in that: the device comprises a transmitting part and a receiving part, wherein the transmitting part is provided with a shell, a circuit board is arranged in the shell, and a relay protection measurement and control unit, a wireless transmission unit and a fault data transmitting functional unit are arranged on the circuit board; the receiving part is a master control host and a data receiving terminal machine which are in wired or wireless connection with the sending part, the master control host is arranged in a master control room, and the data receiving terminal machine is respectively arranged in a scheduling department, a maintenance department, an operation and maintenance department and a leader department;
the relay protection measurement and control unit is connected with the fault data sending functional unit, the fault data sending functional unit is connected with the wireless transmission unit, and the measurement and control fault data are sent to the master control host and the data receiving terminal.
2. The substation distribution line relay protection device of claim 1, characterized in that: and the master control host and the data receiving terminal transmit data through the wireless communication module.
3. The substation distribution line relay protection device according to claim 1 or 2, characterized in that: the relay protection measurement and control unit adopts an MTC-3 measurement and control unit.
4. The measurement and control protection method of the relay protection measurement and control device of the distribution line of the transformer substation as claimed in claim 1 or 2, characterized by comprising the following steps:
1) working with a host;
1-1) when the relay protection measurement and control unit works, the detected fault data is transmitted to a host computer in a wired or wireless mode;
1-2) the host informs a dispatcher and sends an instruction of maintenance or operation to the dispatcher;
2) working cooperatively with the data receiving terminal;
1-1) when the relay protection measurement and control unit works, the detected fault data is transmitted to a data receiving terminal machine in a wireless mode through a fault transmitting functional unit;
1-2) when the data receiving terminal machine is arranged in a dispatching department, after receiving the information, a dispatcher contacts with an operator, a maintainer and a responsible leader to perform next fault treatment;
when the data receiving terminal machine is arranged in a maintenance department, a maintenance worker can timely process the fault after receiving the information;
when the data receiving terminal is arranged in an operation maintenance department, operation and maintenance personnel receive the information and then issue a protection action starting instruction aiming at the fault condition, and the instruction timely informs maintainers, scheduling personnel and leaders in charge;
and when the data receiving terminal machine is arranged in the leader department, the leader can know the fault condition at the first time after receiving the information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010150186.4A CN111181141A (en) | 2020-03-06 | 2020-03-06 | Relay protection device and method for distribution line of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010150186.4A CN111181141A (en) | 2020-03-06 | 2020-03-06 | Relay protection device and method for distribution line of transformer substation |
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| Publication Number | Publication Date |
|---|---|
| CN111181141A true CN111181141A (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010150186.4A Pending CN111181141A (en) | 2020-03-06 | 2020-03-06 | Relay protection device and method for distribution line of transformer substation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014154164A1 (en) * | 2013-03-29 | 2014-10-02 | 北京映翰通网络技术股份有限公司 | Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network |
| CN105048630A (en) * | 2015-09-24 | 2015-11-11 | 国网天津武清供电有限公司 | Intelligent scheduling control system and method based on data automatic analysis system |
| CN205353265U (en) * | 2015-12-05 | 2016-06-29 | 国网山东省电力公司巨野县供电公司 | Distribution lines trouble on -line monitoring system |
| CN211239328U (en) * | 2020-03-06 | 2020-08-11 | 国网江苏省电力有限公司沭阳县供电分公司 | Distribution lines relay protection device of transformer substation |
-
2020
- 2020-03-06 CN CN202010150186.4A patent/CN111181141A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014154164A1 (en) * | 2013-03-29 | 2014-10-02 | 北京映翰通网络技术股份有限公司 | Method and system for detecting and locating single-phase ground fault on low current grounded power-distribution network |
| CN105048630A (en) * | 2015-09-24 | 2015-11-11 | 国网天津武清供电有限公司 | Intelligent scheduling control system and method based on data automatic analysis system |
| CN205353265U (en) * | 2015-12-05 | 2016-06-29 | 国网山东省电力公司巨野县供电公司 | Distribution lines trouble on -line monitoring system |
| CN211239328U (en) * | 2020-03-06 | 2020-08-11 | 国网江苏省电力有限公司沭阳县供电分公司 | Distribution lines relay protection device of transformer substation |
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