CN204679601U - A kind of power angle measuring device for power generator - Google Patents
A kind of power angle measuring device for power generator Download PDFInfo
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- CN204679601U CN204679601U CN201520267644.7U CN201520267644U CN204679601U CN 204679601 U CN204679601 U CN 204679601U CN 201520267644 U CN201520267644 U CN 201520267644U CN 204679601 U CN204679601 U CN 204679601U
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Abstract
The utility model discloses a kind of power angle measuring device for power generator, comprising: motherboard module, exchange module, measure module, open into module, key phase pulse module, analog input module, analog output module, signal module, power module and human-computer interaction device; Motherboard module comprises input/output bus, measures module, opens and be all connected with motherboard module by input/output bus into module, key phase pulse module, analog input module, analog output module, signal module, human-computer interaction device; Key phase pulse module is connected with measurement module, measures module and is connected by Ethernet with human-computer interaction device, exchanges module and is connected with measurement module; Power module is connected with motherboard module.Each to open based on IO bus and couples together into module, signal module, analog input module, analog output module by the utility model, and each module on device flexible configuration can become not same module combination, meets different requirement of engineering.
Description
Technical field
The present invention relates to the power angle measuring device for power generator of a kind of relay protection of power system and automatic safety device, belong to technical field of relay protection.
Background technology
Along with the development of China's power grid construction, grid structure is day by day perfect, also becomes increasingly complex, and in the urgent need to having new technological means to strengthen the dynamic safety monitored control ability of electrical network, improves electricity net safety stable level.Tradition SCADA system collection be the steady state data that second, level refreshed, fault oscillograph to provide before and after fault fast transient Wave data in a period of time, the Dynamic Phasors data providing network-wide basis inter-sync to gather of all having no idea.Synchronous phasor measuring device (PMU) then utilizes satellite synchronizing clock system to provide unified sampling pulse and standard time for the whole network synchronized sampling in wide scope; make between each website, had identical time reference point and sample reference reference point; at synchronized sampling and the dynamic process of synchronized phasor energy accurate description real system that obtains after calculating, for electric system is novel protected, observing and controlling, security and stability control provide new data source.Phase angle difference between generator built-in potential and system busbar voltage is generator's power and angle, and generator's power and angle is the important state variables of characterization system safe and stable operation.
Conventional power angle measuring device for power generator and synchronous phasor measuring device separate, and are generally to adopt the direct method of measurement to measure generator's power and angle, if but there is no global synchronized timing system, then measurement result does not possess temporal correlation.Conventional synchronous phasor measuring set carries out the whole network synchronized sampling under global synchronized timing system is synchronous, can adopt theoretical calculation calculating generator merit angle, but does not possess the function directly measuring generator's power and angle.
Utility model content
For overcoming the deficiency in prior art, the utility model object provides a kind of power angle measuring device for power generator based on IO bus, each opens into module based on IO bus by the utility model, signal module, analog input module, analog output module couples together, according to different requirement of engineering, each module flexible configuration on device can be become not same module combination, and both can by having accessed satellite synchronizing clock signal under the whole network satellite synchronizing clock is synchronous, the direct method of measurement measuring power angle module of set end voltage signal and key phase pulse signal directly measures generator actual work angle, again can by having accessed three-phase set end voltage signal, three camera end current signals, the theoretical calculation measuring power angle module of clock sync pulse and generator parameter measures dynamo theory merit angle, two kinds of methods complement each other, greatly improve measuring power angle precision and reliability.
Technical solutions of the utility model are as follows:
A kind of power angle measuring device for power generator, motherboard module, interchange (AC) module, measures module, opens into (DI) module, key phase pulse (KPM) module, analog input (AI) module, analog output (AO) module, signal (SIG) module, power module and human-computer interaction device.
Motherboard module comprises input and output (IO) bus, measures module, opens and be connected with motherboard module by input/output bus into module, key phase pulse module, analog input module, analog output module, signal module, human-computer interaction device;
Key phase pulse module is connected with measurement module, measures module and is connected by Ethernet with human-computer interaction device, exchanges module and is connected with measurement module;
Power module is connected with motherboard module.
Exchange module for measuring a grade light current mutual inductor;
Key phase pulse module connects tested generator, for generator terminal voltage and key phase pulse signal are converted to 3.3V CMOS level;
Open and measure for intake into module, be directly connected with motherboard module input and output (IO) bus;
Signal module is used for providing central alarm signal, is directly connected with motherboard module input/output bus;
Analog input module, for measuring 4 ~ 20mA direct current signal, is connected with motherboard module input/output bus;
Analog output module is used for driver output 4 ~ 20mA direct current signal, is connected with motherboard module input/output bus;
Measure module and be used for sampling and real-time Communication for Power, be directly connected with the IO bus of motherboard module;
Human-computer interaction device, for controlling printer, with background communication, is directly connected with motherboard module IO bus;
Power module is used for providing power supply for each module of device;
Motherboard module is used for all modules to couple together.
Measure module to comprise for the synchronous synchronizing circuit of signal clock.
Key phase pulse module comprises voltage conversion circuit, voltage conversion circuit access set end voltage and key phase pulse signal, and is shaped as the 3.3V CMOS level signal being suitable for CPU and gathering.
Measure module and comprise sample circuit, clock synchronization circuit, 1PPS signal extraction unit and direct method of measurement measuring power angle module, theoretical calculation measuring power angle module, generator parameter load module;
Direct method of measurement measuring power angle module comprises comparer, and clock synchronization circuit, 1PPS signal extraction unit, direct method of measurement measuring power angle module are linked in sequence successively; 1PPS signal extraction unit connects sample circuit; Sample circuit, generator parameter load module are all connected with theoretical calculation measuring power angle module
Compared with prior art, the utility model comprises following beneficial effect:
The utility model based on IO bus each is opened into, analog input, analog output module couples together, according to different requirement of engineering, each module flexible configuration on device can be become not same module combination, such as in conventional substation side without the need to analog input, analog output module, but need to measure a lot of intake, then more module can be configured to open into module, need to measure and export 4 ~ 20mA signal at Power Plant Side, and switching value number ratio is less, then need to configure analog input, analog output module, open and then configure less into module, combination between such module is very flexible, can meet the needs of different application occasion.
The utility model introduces satellite clock B code time signal, set end voltage current signal, key phase pulse signal, both directly generator's power and angle can be measured, can adopt again theoretical calculation calculating generator merit angle, two kinds of methods complement each other, and greatly improve measuring power angle precision and reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of power angle measuring device for power generator of the utility model;
Fig. 2 is the structural representation that the utility model measures module.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of power angle measuring device for power generator, motherboard module, exchange module, measure module, open into module, key phase pulse module, analog input module, analog output module, signal module, power module and human-computer interaction device.
Motherboard module comprises input and output (IO) bus, measure module, open and be connected with motherboard module by input/output bus into module, key phase pulse module, analog input module, analog output module, signal module, human-computer interaction device.
Key phase pulse module is connected with measurement module, measures module and is connected by Ethernet with human-computer interaction device, exchanges module and is connected with measurement module;
Power module is connected with motherboard module.
Exchange module for measuring a grade light current mutual inductor;
Key phase pulse module connects tested generator, for generator terminal voltage and key phase pulse signal are converted to 3.3V CMOS level;
Open and measure for intake into module, be directly connected with motherboard module input and output (IO) bus;
Signal module is used for providing central alarm signal, is directly connected with motherboard module input/output bus;
Analog input module, for measuring 4 ~ 20mA direct current signal, is connected with motherboard module input/output bus;
Analog output module is used for driver output 4 ~ 20mA direct current signal, is connected with motherboard module input/output bus;
Measure module and be used for sampling and real-time Communication for Power, be directly connected with motherboard module IO bus;
Human-computer interaction device, for controlling printer, with background communication, is directly connected with motherboard module IO bus;
Power module is used for providing power supply for each module of device;
Motherboard module is used for all modules to couple together.
Measure module to comprise for the synchronous synchronizing circuit of signal clock.
Key phase pulse module comprises voltage conversion circuit, voltage conversion circuit access set end voltage and key phase pulse signal, and is shaped as the 3.3V CMOS level signal being suitable for CPU and gathering.
As shown in Figure 2, measure module and comprise sample circuit, clock synchronization circuit, 1PPS signal extraction unit and direct method of measurement measuring power angle module, theoretical calculation measuring power angle module, generator parameter load module.Theoretical calculation measuring power angle module is realized by CPU.
Direct method of measurement measuring power angle module comprises comparer, and clock synchronization circuit, 1PPS signal extraction unit, direct method of measurement measuring power angle module are linked in sequence successively; 1PPS signal extraction unit connects sample circuit; Sample circuit, generator parameter load module are all connected with theoretical calculation measuring power angle module.Direct method of measurement measuring power angle module measures generator's power and angle by the satellite B code clock directly comparing acquisition.
Be worth illustrating, theoretical calculation measuring power angle module is realized by cpu chip, is the measuring power angle theory calculate of prior art, does not improve method for measuring power angle.
Those skilled in the art can change the utility model or modification design but do not depart from thought of the present utility model and scope.Therefore, if these amendments of the present utility model and modification belong within the utility model claim and equivalent technical scope thereof, then the utility model is also intended to comprise these change and modification.
Claims (5)
1. a power angle measuring device for power generator, it is characterized in that, comprising: motherboard module, exchange module, measure module, open into module, key phase pulse module, analog input module, analog output module, signal module, power module and human-computer interaction device;
Described motherboard module comprises input/output bus, described measurement module, opens and is all connected with motherboard module by input/output bus into module, key phase pulse module, analog input module, analog output module, signal module, human-computer interaction device;
Described key phase pulse module is connected with measurement module, and described measurement module is connected by Ethernet with human-computer interaction device, and described interchange module is connected with measurement module;
Described power module is connected with motherboard module.
2. a kind of power angle measuring device for power generator according to claim 1, is characterized in that,
Described measurement module comprises for the clock synchronization circuit synchronous with satellite clock signal.
3. a kind of power angle measuring device for power generator according to claim 1, is characterized in that,
Described key phase pulse module comprises voltage conversion circuit.
4. a kind of power angle measuring device for power generator according to claim 1, is characterized in that,
Measure module and comprise sample circuit, clock synchronization circuit, 1PPS signal extraction unit and direct method of measurement measuring power angle module, theoretical calculation measuring power angle module, generator parameter load module;
Described clock synchronization circuit, 1PPS signal extraction unit, direct method of measurement measuring power angle module are linked in sequence successively; Described 1PPS signal extraction unit connects sample circuit; Described sample circuit, generator parameter load module are all connected with theoretical calculation measuring power angle module.
5. a kind of power angle measuring device for power generator according to claim 4, is characterized in that, described direct method of measurement measuring power angle module comprises comparer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520267644.7U CN204679601U (en) | 2015-04-29 | 2015-04-29 | A kind of power angle measuring device for power generator |
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| CN201520267644.7U CN204679601U (en) | 2015-04-29 | 2015-04-29 | A kind of power angle measuring device for power generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572590A (en) * | 2015-12-22 | 2016-05-11 | 国电南瑞科技股份有限公司 | Generator power angle measurement method based on RFID |
| CN109459678A (en) * | 2018-10-10 | 2019-03-12 | 北京艾博唯科技有限公司 | A kind of board testing system, board test machine |
-
2015
- 2015-04-29 CN CN201520267644.7U patent/CN204679601U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572590A (en) * | 2015-12-22 | 2016-05-11 | 国电南瑞科技股份有限公司 | Generator power angle measurement method based on RFID |
| CN105572590B (en) * | 2015-12-22 | 2018-06-29 | 国电南瑞科技股份有限公司 | Generator's power and angle measuring method based on RFID |
| CN109459678A (en) * | 2018-10-10 | 2019-03-12 | 北京艾博唯科技有限公司 | A kind of board testing system, board test machine |
| CN109459678B (en) * | 2018-10-10 | 2024-04-12 | 朝阳晋慧智能科技有限公司 | Board card testing system and board card testing machine |
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