CN201466695U - Multifunctional relay protection device - Google Patents
Multifunctional relay protection device Download PDFInfo
- Publication number
- CN201466695U CN201466695U CN2009200744317U CN200920074431U CN201466695U CN 201466695 U CN201466695 U CN 201466695U CN 2009200744317 U CN2009200744317 U CN 2009200744317U CN 200920074431 U CN200920074431 U CN 200920074431U CN 201466695 U CN201466695 U CN 201466695U
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- protection
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- transformer
- sampling plate
- analog sampling
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Abstract
The utility model discloses a multifunctional relay protection device which carries out process control through a front panel provided with a 32-bit microprocessor, carries out relay protection operation through a main board provided with a DSP chip, and carries out sampling of electrical signals through an analog sampling board provided with a voltage transformer and a current transformer. In the sampling process, according to different relay protection types, the wiring terminals of the corresponding voltage transformer and the corresponding current transformer on the analog sampling board are connected with an external signal source to realize the sampling of the electrical signals. The main board provided with the DSP chip carries out protection operation on the sampled data according to the logic program stored in a programmable logic device. The utility model can ensure the relay protection types of at least five devices of lead-in protection, feeder protection, motor protection, transformer protection and capacitor protection, thereby achieving the purpose of realizing multiple relay protection types through one device.
Description
Technical field
The utility model relates to field of relay protection in power, particularly a kind of multifunctional relay protection device.
Background technology
Relay protection to circuit and unit piece electric equipment is realized by the corresponding relays protective device respectively.Realize by the corresponding protection device such as incoming relay-protection, protection for feed line, motor protection, tranformer protection and capacitor protection etc.; every type protection can not be exchanged use, such as: the protective device of transformer type can not be used for the protection of motor.The user of relaying protection is when making spare part, and the protective device of each type all must be made spare part, and in this case, the quantity of spare part can be a lot, the maintenance cost height.Device fabrication merchant's research and development department is various because of different protection types of devices, makes research and development safeguard that human cost is very high.
The utility model content
The purpose of this utility model provides a kind of multifunctional relay protection device, and it can realize the protection of multiple relaying protection type is realized.
The utility model provides a kind of multifunctional relay protection device, comprising:
Front panel is provided with first microprocessor and is connected with bus;
Mainboard is provided with second microprocessor and is connected with bus;
The analog sampling plate, its input receives analog sampled data, and its output is exported the digital sample data to described front panel and mainboard by bus;
Programmable logic device, the stored logic program also connects described front panel and mainboard by bus;
The switching value tablet, be connected with bus and by the bus output switching signal to described front panel and mainboard;
Digital output module is connected with bus and receives the control command that described front panel and mainboard send by bus.
Described analog sampling plate comprises that further the voltage of being made up of the voltage transformer summation current transformer that connects successively forms the loop, the signal of telecommunication is carried out the hardware filtering loop of low-pass filtering and the sample circuit that the analog electrical parameter is sampled.
The voltage of described analog sampling plate forms the loop and comprises following voltage transformer summation current transformer:
Be arranged at described analog sampling plate first row's the threephase current transformer that is used to protect; Be arranged at described analog sampling plate second row's the threephase current transformer that is used to measure; Be arranged at described analog sampling plate the 3rd row's threephase potential transformer and zero sequence current mutual inductor; Be arranged at described analog sampling plate the 4th row's zero sequential potential transformer, line side voltage transformer and low-pressure side voltage transformer.
Described hardware filtering loop comprises the analog quantity low pass filter of each measurement passage of being made up of resistance and electric capacity.
Described sample circuit comprises 2 14 high-speed AD chips that 16 tunnel analog electrical parameters are sampled.
Adopt a kind of multifunctional relay protection device described in the utility model; it carries out process control by the front panel that is provided with 32-bit microprocessor; carry out the relaying protection computing by the mainboard that is provided with dsp chip; carry out the sampling of the signal of telecommunication by the analog sampling plate that the voltage transformer summation current transformer is installed; when sampling; look different relaying protection type; the binding post of correspondent voltage instrument transformer summation current transformer on the analog sampling plate is connected with the signal source of outside; realize the sampling of the signal of telecommunication; the mainboard that is provided with dsp chip is protected computing according to the logical program of programmable logic device storage to sampled data. and the utility model can guarantee incoming relay-protection at least; protection for feed line; motor protection; the relaying protection type of tranformer protection and five kinds of devices of capacitor protection has reached by a kind of purpose that realizes multiple relaying protection type of installing.
Description of drawings
Fig. 1 is a structural principle block diagram of the present utility model;
Fig. 2 is an alternating interface between man and computer of the present utility model;
Fig. 3 is an analog sampling board plane position view of the present utility model, and wherein, E, F are outside current transformer and voltage transformer connecting terminal blocks.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
With reference to Fig. 1, the utility model provides a kind of multifunctional relay protection device 100, comprising:
Front panel 110 is responsible for alternating interface between man and computer, is provided with first microprocessor and is connected with bus 170, and described first microprocessor carries out process control as 32 bit CPUs of master control.
Mainboard 120 is provided with second microprocessor and is connected with bus 170, described second microprocessor as dsp chip in order to protect computing.
Referring to Fig. 3, Fig. 3 has shown the composition of instrument transformer on the described analog sampling plate 130, and the voltage of described analog sampling plate 130 forms the loop and comprises following voltage transformer summation current transformer: the threephase current transformer that is used to protect that is arranged at described analog sampling plate 130 first rows; Be arranged at described analog sampling plate 130 second rows' the threephase current transformer that is used to measure; Be arranged at described analog sampling plate 130 the 3rd row's threephase potential transformer and zero sequence current mutual inductor; Be arranged at described analog sampling plate 130 the 4th row's zero sequential potential transformer, line side voltage transformer and low-pressure side voltage transformer.
Among the top embodiment; described protective device 100 carries out the sampling of the signal of telecommunication by the analog sampling plate 130 that the voltage transformer summation current transformer is installed; when sampling; look different relaying protection type; the binding post of correspondent voltage instrument transformer summation current transformer on the analog sampling plate 130 is connected with the signal source of outside, realizes the sampling of the signal of telecommunication.
Programmable logic device 140, the stored logic program is also passed through bus 170 described front panel 110 of connection and mainboards 120.
Switching value tablet 150, it is as signal input part, be connected with bus 170 and by bus 170 output switching signals to described front panel 110 and mainboard 120.
Referring to Fig. 2; Fig. 2 has shown the alternating interface between man and computer of described protective device 100; described protective device 100 can be realized incoming relay-protection; protection for feed line; motor protection; the relaying protection type of tranformer protection and five kinds of devices of capacitor protection; select the protective device type (as the electric motor protecting type) of needs by Fig. 2 interface displayed; being about to protective device 100 this moment adjusts and is the electric motor protecting type; at this moment this definite required measurement requirement of protection type has also just been decided; by the foreign current instrument transformer; the secondary connection of voltage transformer satisfies measurement requirement. such as type of device being adjusted into behind the electric motor protecting; the required measurement requirement of electric motor protecting is: three-phase phase voltage; measure and use the three-phase phase current; protection three-phase phase current; zero-sequence current; residual voltage. and when if handle assembly protection type is adjusted to incoming relay-protection again; the required measurement requirement of incoming relay-protection is: three-phase phase voltage; measure and use the three-phase phase current; protection three-phase phase current; zero-sequence current; residual voltage; the line side voltage transformer that the low-pressure side zero sequence is required with reclosing. compare with the protection of inlet wire type; motor protecting device does not need to insert low-pressure side zero sequence and the required line side voltage transformer of circuit reclosing; so with corresponding foreign current instrument transformer; the secondary line of voltage transformer is by the measurement terminal (E among Fig. 3 on the required analog sampling plate of receiving device respectively of unit protection type; the F connecting terminal block), so just make hardware realize configuration.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of above embodiment.
Claims (5)
1. a multifunctional relay protection device is characterized in that, comprising:
Front panel is provided with first microprocessor and is connected with bus;
Mainboard is provided with second microprocessor and is connected with bus;
The analog sampling plate, its input receives analog sampled data, and its output is exported the digital sample data to described front panel and mainboard by bus;
Programmable logic device, the stored logic program also connects described front panel and mainboard by bus;
The switching value tablet, be connected with bus and by the bus output switching signal to described front panel and mainboard;
Digital output module is connected with bus and receives the control command that described front panel and mainboard send by bus.
2. protective device as claimed in claim 1; it is characterized in that described analog sampling plate comprises that further the voltage of being made up of the voltage transformer summation current transformer that connects successively forms the loop, the signal of telecommunication is carried out the hardware filtering loop of low-pass filtering and the sample circuit that the analog electrical parameter is sampled.
3. protective device as claimed in claim 2 is characterized in that, the voltage of described analog sampling plate forms the loop and comprises following voltage transformer summation current transformer:
Be arranged at described analog sampling plate first row's the threephase current transformer that is used to protect; Be arranged at described analog sampling plate second row's the threephase current transformer that is used to measure; Be arranged at described analog sampling plate the 3rd row's threephase potential transformer and zero sequence current mutual inductor; Be arranged at described analog sampling plate the 4th row's zero sequential potential transformer, line side voltage transformer and low-pressure side voltage transformer.
4. as claim 2 or 3 described protective devices, it is characterized in that described hardware filtering loop comprises the analog quantity low pass filter of each measurement passage of being made up of resistance and electric capacity.
5. protective device as claimed in claim 4 is characterized in that, described sample circuit comprises 2 14 high-speed AD chips that 16 tunnel analog electrical parameters are sampled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200744317U CN201466695U (en) | 2009-08-21 | 2009-08-21 | Multifunctional relay protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200744317U CN201466695U (en) | 2009-08-21 | 2009-08-21 | Multifunctional relay protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201466695U true CN201466695U (en) | 2010-05-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200744317U Expired - Fee Related CN201466695U (en) | 2009-08-21 | 2009-08-21 | Multifunctional relay protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201466695U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118022A (en) * | 2011-01-21 | 2011-07-06 | 保定和易法电气科技有限公司 | Intelligent protection system |
| CN105305235A (en) * | 2015-05-07 | 2016-02-03 | 国家电网公司 | Portable relay protection device for distribution network |
| CN106124888A (en) * | 2016-06-15 | 2016-11-16 | 珠海科众技术有限公司 | The full-automatic adjustment method of a kind of microcomputer protective relay device and system |
| CN107834508A (en) * | 2017-11-29 | 2018-03-23 | 深圳供电局有限公司 | A kind of feeder protection equipment of external interface standard |
| CN108181537A (en) * | 2018-03-13 | 2018-06-19 | 云南电网有限责任公司电力科学研究院 | A kind of protective device automatic testing method and system |
-
2009
- 2009-08-21 CN CN2009200744317U patent/CN201466695U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118022A (en) * | 2011-01-21 | 2011-07-06 | 保定和易法电气科技有限公司 | Intelligent protection system |
| CN105305235A (en) * | 2015-05-07 | 2016-02-03 | 国家电网公司 | Portable relay protection device for distribution network |
| CN105305235B (en) * | 2015-05-07 | 2017-05-03 | 国家电网公司 | portable relay protection device for distribution network |
| CN106124888A (en) * | 2016-06-15 | 2016-11-16 | 珠海科众技术有限公司 | The full-automatic adjustment method of a kind of microcomputer protective relay device and system |
| CN106124888B (en) * | 2016-06-15 | 2018-09-18 | 珠海科众技术有限公司 | A kind of full-automatic adjustment method and system of microcomputer protective relay device |
| CN107834508A (en) * | 2017-11-29 | 2018-03-23 | 深圳供电局有限公司 | A kind of feeder protection equipment of external interface standard |
| CN107834508B (en) * | 2017-11-29 | 2023-07-25 | 深圳供电局有限公司 | Feeder line protection device with standardized external interface |
| CN108181537A (en) * | 2018-03-13 | 2018-06-19 | 云南电网有限责任公司电力科学研究院 | A kind of protective device automatic testing method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20150821 |
|
| EXPY | Termination of patent right or utility model |