CN105514952A - Power network power supply line protective relaying apparatus control method - Google Patents
Power network power supply line protective relaying apparatus control method Download PDFInfo
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- CN105514952A CN105514952A CN201510927866.1A CN201510927866A CN105514952A CN 105514952 A CN105514952 A CN 105514952A CN 201510927866 A CN201510927866 A CN 201510927866A CN 105514952 A CN105514952 A CN 105514952A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001681 protective effect Effects 0.000 title claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 44
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
- H02H7/262—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 switching or blocking orders
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a power network power supply line protective relaying apparatus control method. Included in the method are an analog quantity acquisition module, a logic processing module, a DSP, a relay protective module, a communication module and a man-machine interface module, wherein the output ends of the analog quantity acquisition module and the relay protective module are connected with the logic processing module, the logic processing module is connected with the DSP, the logic processing module is connected with a terminal processing module through the communication module, and the DSP is also connected with an electrically erasable programmable ROM. Also included are a switching quantity input module and a photoelectric isolation module, wherein the switching quantity input module is connected with the DSP through the photoelectric isolation module. According to the invention, the structure principle is simple, the control precision is high, the anti-interference capability is high, a safe and reliable guarantee is provided for protection of a power network power supply line, at the same time, rapid, stable and reliable reaction can be made in case of power line abnormities, and the power supply quality of a power network is improved.
Description
Technical field:
The present invention relates to relay protection field, particularly relate to a kind of mains supply circuit relay protection apparatus control method.
Background technology:
When the force device (as generator, circuit etc.) in electric power system or electric power system itself there occurs fault jeopardize safe operation of power system time, can send warning signal in time to operator, or send trip signal to stop a kind of automation measure and the equipment of these event evolves directly to controlled circuit breaker.Realize the complete set of equipments of this automation measure, be generally commonly referred to as protective relaying device; Electric power is that the world today uses the most extensively, the of paramount importance energy in status, and therefore, the operation of power system safety and stability all has very important meaning to national economy, people's lives and even social stability.But due to the factor of the aspects such as natural environment, operation and maintenance levels, the various elements in electric power system are in operation and can not keep normal operating conditions always.Therefore, needing special technology is that an efficient public security system is set up in electric power system, and wherein one of of paramount importance technology is exactly Protection Technology.
When electric power system is broken down or other occur when jeopardizing the unusual service condition of safe operation; faulty equipment automatically can excise by protective relaying device within shortest time in the cards and Minimum Area from system; or send signal and eliminate unusual service condition root by operator on duty, to alleviate or to avoid the damage of other equipment and the impact of powering on adjoining area.
Summary of the invention:
The object of the invention provides a kind of structural principle simple; control precision is high, antijamming capability is strong; for mains supply route protection provides safe and reliable guarantee, can power circuit extremely be made fast, stablizes, be reacted reliably simultaneously, improve the technical scheme of grid supply quality:
A kind of mains supply circuit relay protection apparatus control method, comprise analogue collection module, logic processing module, dsp processor, relay protection module, communication module and human-computer interface module, analogue collection module, relay protection module output connects logic processing module, logic processing module connects dsp processor, logic processing module connects terminal processing module by communication module, dsp processor also connects EEPROM (Electrically Erasable Programmable Read Only Memo), also comprise switching input module, photoelectric isolation module, switching input module connects dsp processor by photoelectric isolation module.
As preferably; relay protection module is made up of relay, fly-wheel diode, LED light-emitting diode, resistance A, triode and resistance B; the two ends of the coil of relay connect with the collector electrode of 5V voltage output end and triode respectively; the normally-closed contact of relay connects with civil power live wire; fly-wheel diode is connected in reverse parallel between two coil-end two ends of relay; LED light-emitting diode and resistance A are connected in series between 5V power supply and the collector electrode of triode; the base stage of triode is connected with dsp processor by resistance B, the grounded emitter of triode.
As preferably, analogue collection module comprises synchronized sampling/maintenance module, AD conversion module, level switch module, memory module, AD conversion module connects synchronized sampling/maintenance module, level switch module, memory module respectively, and AD conversion module output connects logic processing module.
As preferably, its control method comprises the following steps:
A, analogue collection module gather the parameters of electric power of supply line, and switching input module gathers the switching value information of equipment in electric power system, and transfers to logic processing module;
B, logic processing module and dsp processor carry out exchanges data, and dsp processor is sent to logic processing module after carrying out fourier all-wave algorithm process to collection signal again;
C, logic processing module receive data receiving relay protection module guard signal simultaneously;
The voltage parameter that D, logic processing module obtain and AC sampling result are sent to terminal processing module analysis by communication module;
If E judge meet protective condition, then by communication module to the instruction of logic processing module output protection, starting relay protect.
Beneficial effect of the present invention is:
(1) structural principle of the present invention is simple; control precision is high, antijamming capability is strong; by communication module, gathered fault-signal is accurately determined the section position that fault occurs; and the really protection range of the protective relaying device of distance fault generation section and protected mode take corresponding error protection, for mains supply route protection provides safe and reliable guarantee.
(2) the present invention can detect the failure condition of circuit in all directions and reliably, extremely can make fast, stablize, react reliably power circuit, investigate fault fast, guarantee the operation of circuit normal table, improve grid supply quality.
Accompanying drawing illustrates:
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is analog acquisition module principle figure of the present invention;
Fig. 3 is relay protection module principle figure of the present invention.
Embodiment:
For making goal of the invention of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
As shown in Figure 1-Figure 3, a kind of mains supply circuit relay protection apparatus control method, comprises analogue collection module 1, logic processing module 2, dsp processor 3, relay protection module 4, communication module 5 and human-computer interface module 6, described analogue collection module 1, described relay protection module 4 output connects described logic processing module 2, described logic processing module 2 connects described dsp processor 3, described logic processing module 2 connects described terminal processing module 7 by described communication module 5, described dsp processor 3 also connects EEPROM (Electrically Erasable Programmable Read Only Memo) 8, also comprises switching input module 9, photoelectric isolation module 10, described switching input module 9 connects described dsp processor 3 by described photoelectric isolation module 10, and described analogue collection module 1 comprises synchronized sampling/maintenance module 11, AD conversion module 12, level switch module 13, memory module 14, described AD conversion module 12 connects described synchronized sampling/maintenance module 11 respectively, described level switch module 13, described memory module 14, described AD conversion module 12 output connects described logic processing module 2.
The TMS320LF2407DSP that dsp processor 3 adopts TI company to produce is as control core, and dsp processor 3 adopts the static CMOS technology of high-performance, the features such as supply power voltage 3.3V, has low-power consumption, and the instruction cycle is short; Communication module 5 adopts the MODBUS communication protocol of industrial standard, and the verification of its cyclic redundancy check (CRC) code substantially increases the reliability of transfer of data, subtracts
Minority, according to misinformation and the transmission of misdata, is convenient to communicate with other equipment networks in network, can distance data transmission thus realize communication that is on-the-spot and local area network (LAN).EEPROM (Electrically Erasable Programmable Read Only Memo) 8 in the present invention carries out reading and writing data; its memory capacity is 8K; protection judges frequently to use setting value and control word; these protection seting values set according to relevant criterion and system running environment in advance and are stored in EEPROM (Electrically Erasable Programmable Read Only Memo) 8; also some fault messages to be stored in EEPROM (Electrically Erasable Programmable Read Only Memo) 8 simultaneously, therefore when initialization, protection seting value and control word must be read in EEPROM (Electrically Erasable Programmable Read Only Memo) 8.
In the present embodiment, relay protection module 4 is by relay 41, fly-wheel diode 42, LED light-emitting diode 43, resistance A1a, triode 44 and resistance B2a form, the two ends of the coil of described relay 41 connect with the collector electrode of 5V voltage output end and triode 44 respectively, the normally-closed contact 411 of described relay 41 connects with civil power live wire, described fly-wheel diode 42 is connected in reverse parallel between two coil-end two ends of relay 41, described LED light-emitting diode 43 and resistance A1a are connected in series between the collector electrode of 5V power supply and triode 44, the base stage of described triode 44 is connected with dsp processor 3 by resistance B2a, the grounded emitter of described triode 44.When supply line normally runs, the adhesive of relay 41 normally closed switch, now to be equivalent to conductive line resistance values less for relay, be connected in parallel on the LED light-emitting diode 43 at relay two ends and do not work with resistance A1a, LED light-emitting diode 43 does not work, be short-circuited fault in supply line, and relay trips, and LED light-emitting diode 43 is bright.The present invention can detect the failure condition of circuit in all directions and reliably, extremely can make fast, stablize, react reliably power circuit, investigate fault fast, guarantee the operation of circuit normal table, improve grid supply quality.
Its control method comprises the following steps:
A, analogue collection module 1 gather the parameters of electric power of supply line, and switching input module 9 gathers the switching value information of equipment in electric power system, and transfers to logic processing module 2;
B, logic processing module 2 carry out exchanges data with dsp processor 3, are sent to logic processing module 2 again after dsp processor 3 pairs of collection signals carry out fourier all-wave algorithm process;
C, logic processing module 2 receive data receiving relay protection module 4 guard signal simultaneously;
The voltage parameter that D, logic processing module 2 obtain and AC sampling result are sent to terminal processing module 7 by communication module 5 and analyze;
If E judges to meet protective condition, then pass through communication module 5 to the instruction of logic processing module 2 output protection, starting relay is protected.
Beneficial effect of the present invention is: structural principle of the present invention is simple, control precision is high, antijamming capability is strong, by communication module, gathered fault-signal is accurately determined the section position that fault occurs, and the really protection range of the protective relaying device of distance fault generation section and protected mode take corresponding error protection, for mains supply route protection provides safe and reliable guarantee; The present invention can detect the failure condition of circuit in all directions and reliably, extremely can make fast, stablize, react reliably power circuit, investigate fault fast, guarantee the operation of circuit normal table, improve grid supply quality.
Above-described embodiment is preferred embodiment of the present invention; it is not the restriction to technical solution of the present invention; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of patent of the present invention.
Claims (5)
1. a mains supply circuit relay protection apparatus control method, it is characterized in that: comprise analogue collection module, logic processing module, dsp processor, relay protection module, communication module and human-computer interface module, described analogue collection module, described relay protection module output connects described logic processing module, described logic processing module connects described dsp processor, described logic processing module connects described terminal processing module by described communication module, described dsp processor also connects EEPROM (Electrically Erasable Programmable Read Only Memo), also comprise switching input module, photoelectric isolation module, described switching input module connects described dsp processor by described photoelectric isolation module.
2. a kind of mains supply circuit relay protection apparatus control method according to claim 1, it is characterized in that: described relay protection module is by relay, fly-wheel diode, LED light-emitting diode, resistance A, triode and resistance B form, the two ends of the coil of described relay connect with the collector electrode of 5V voltage output end and triode respectively, the normally-closed contact of described relay connects with civil power live wire, described fly-wheel diode is connected in reverse parallel between two coil-end two ends of relay, described LED light-emitting diode and resistance A are connected in series between 5V power supply and the collector electrode of triode, the base stage of described triode is connected with dsp processor 3 by resistance B, the grounded emitter of described triode.
3. a kind of mains supply circuit relay protection apparatus control method according to claim 1; it is characterized in that: described analogue collection module comprises synchronized sampling/maintenance module, AD conversion module, level switch module, memory module; described AD conversion module connects described synchronized sampling/maintenance module, described level switch module, described memory module respectively, and described AD conversion module output connects described logic processing module.
4. a kind of mains supply circuit relay protection apparatus control method according to claim 1, is characterized in that: described communication module adopts the MODBUS communication protocol of industrial standard.
5. a kind of mains supply circuit relay protection apparatus control method according to claim 1, is characterized in that: its control method comprises the following steps:
A, analogue collection module gather the parameters of electric power of supply line, and switching input module gathers the switching value information of equipment in electric power system, and transfers to logic processing module;
B, logic processing module and dsp processor carry out exchanges data, and dsp processor is sent to logic processing module after carrying out fourier all-wave algorithm process to collection signal again;
C, logic processing module receive data receiving relay protection module guard signal simultaneously;
The voltage parameter that D, logic processing module obtain and AC sampling result are sent to terminal processing module analysis by communication module;
If E judge meet protective condition, then by communication module to the instruction of logic processing module output protection, starting relay protect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927866.1A CN105514952A (en) | 2015-12-15 | 2015-12-15 | Power network power supply line protective relaying apparatus control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510927866.1A CN105514952A (en) | 2015-12-15 | 2015-12-15 | Power network power supply line protective relaying apparatus control method |
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| CN105514952A true CN105514952A (en) | 2016-04-20 |
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| CN201510927866.1A Pending CN105514952A (en) | 2015-12-15 | 2015-12-15 | Power network power supply line protective relaying apparatus control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169743A (en) * | 2016-08-31 | 2016-11-30 | 国网山东省电力公司平度市供电公司 | A kind of micro-capacitance sensor protective relaying device and guard method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1460950A (en) * | 2003-01-15 | 2003-12-10 | 西安交通大学 | Restructurable hardware designing platform for intelligent electric equipment |
| US20070276613A1 (en) * | 2006-05-23 | 2007-11-29 | Kim Gi-Young | Automatic Trip Device, Network System using it And Control Method Thereof |
| CN203086097U (en) * | 2012-12-14 | 2013-07-24 | 深圳市华力特电气股份有限公司 | Relay protection device |
| CN103560496A (en) * | 2013-11-08 | 2014-02-05 | 宁夏天地经纬电力设备工程有限公司 | Control system of intelligent circuit breaker |
| CN204167883U (en) * | 2014-10-25 | 2015-02-18 | 西安科技大学 | A kind of 10kV line short fault microcomputer protective relay device |
-
2015
- 2015-12-15 CN CN201510927866.1A patent/CN105514952A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1460950A (en) * | 2003-01-15 | 2003-12-10 | 西安交通大学 | Restructurable hardware designing platform for intelligent electric equipment |
| US20070276613A1 (en) * | 2006-05-23 | 2007-11-29 | Kim Gi-Young | Automatic Trip Device, Network System using it And Control Method Thereof |
| CN203086097U (en) * | 2012-12-14 | 2013-07-24 | 深圳市华力特电气股份有限公司 | Relay protection device |
| CN103560496A (en) * | 2013-11-08 | 2014-02-05 | 宁夏天地经纬电力设备工程有限公司 | Control system of intelligent circuit breaker |
| CN204167883U (en) * | 2014-10-25 | 2015-02-18 | 西安科技大学 | A kind of 10kV line short fault microcomputer protective relay device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169743A (en) * | 2016-08-31 | 2016-11-30 | 国网山东省电力公司平度市供电公司 | A kind of micro-capacitance sensor protective relaying device and guard method |
| CN106169743B (en) * | 2016-08-31 | 2018-07-31 | 国网山东省电力公司平度市供电公司 | A kind of micro-capacitance sensor protective relaying device and guard method |
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Effective date of registration: 20160824 Address after: 273200 No. 34 Guangming Road, Surabaya County, Shandong, Jining Applicant after: SISHUI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER COMPANY Applicant after: State Grid Corporation of China Address before: 273200 No. 34 Guangming Road, Surabaya County, Shandong, Jining Applicant before: SISHUI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER COMPANY |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160420 |