CN104810923A - Intelligent power distribution and use integrated terminal based on IEC61850 stipulation - Google Patents
Intelligent power distribution and use integrated terminal based on IEC61850 stipulation Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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Abstract
The invention discloses an intelligent power distribution and use integrated terminal based on IEC61850 stipulation. The terminal comprises a chassis, a host back plate arranged in the chassis, a metering collection unit, a protection measurement and control unit, an electric energy quality monitoring unit, a low voltage comprehensive processing unit and a device state monitoring unit which are in communication connection with a main control unit through the host back plate and a power unit used for supplying power to the units. The terminal system adopts the integrated design, a power distribution automatic terminal, a distribution transformation monitoring terminal, a centralized meter reading terminal, an electric energy quality analyzing device, a reactive compensation control device, a three-phase electric energy meter, a comprehensive environment monitoring device and multiple terminals and devices in a power distribution room are highly integrated, device cost and power distribution station space are saved, data classification issuing and information sharing are achieved, multi-department data transmission can be achieved by one device, and each can take what he needs.
Description
Technical Field
The invention relates to an intelligent power distribution and utilization integrated terminal based on an IEC61850 protocol.
Background
Currently, the IEC61850 standard is the only global universal standard in the field of power system automation. The standardization of engineering operation of the intelligent substation is realized through standard realization. The engineering implementation of the intelligent substation becomes standard, uniform and transparent.
The intelligent substation in the intelligent power grid is formed by combining advanced, reliable, energy-saving, environment-friendly and integrated equipment under the IEC61850 standard specification, takes a platform of high-speed network communication as the basis of information transmission, automatically completes basic functions such as an information acquisition function, a measurement function, a control function, a protection function, a metering function, a monitoring function and the like, and can support advanced application functions such as automatic control, intelligent adjustment, online analysis and decision, cooperative interaction and the like during power grid production according to needs. The intelligent substation is characterized in that the intelligent substation is based on intelligent primary equipment and a unified information platform by adopting advanced technologies such as electronic sensors, electronics, information, communication, control and artificial intelligence, realizes the functions of real-time panoramic monitoring, automatic operation control, equipment state maintenance, operation state self-adaptation, intelligent analysis decision and the like of the substation, evaluates, pre-warns and controls the safety state of the intelligent power grid, optimizes the operation of an intelligent system, realizes the real-time access and exit of new energy, and can provide support for cooperative interaction with a dispatching center, a power supply and related substations.
The existing distribution network monitoring has the following problems:
1. the existing substation monitoring terminals are various in types, and comprise a substation terminal DTU, a distribution transformer terminal TTU, a relay protection device, a voltage monitor, an electric energy quality monitor and the like, wherein each device is managed by different business departments, and the equipment purchasing cost and the operation and maintenance cost are high.
2. Different monitoring terminals communicate with the background respectively, like DTUs in a same electric room use optical fiber communication, TTUs and other terminals use wireless communication respectively, unified planning is lacked, communication channel resources are wasted, and equipment purchasing cost is increased.
3. Various devices adopt various different communication protocols, and are arrayed respectively.
Disclosure of Invention
The invention aims to provide an intelligent power distribution and utilization integrated terminal based on an IEC61850 protocol aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: an intelligent power distribution and utilization integrated terminal based on an IEC61850 protocol comprises a case, a host backboard arranged in the case, a metering acquisition unit, a protection measurement and control unit, an electric energy quality monitoring unit, a low-voltage comprehensive processing unit, an equipment state monitoring unit and a power supply unit, wherein the metering acquisition unit, the protection measurement and control unit, the electric energy quality monitoring unit, the low-voltage comprehensive processing unit and the equipment state monitoring unit are respectively in communication connection with a main control unit through the host backboard; wherein,
the main control unit is communicated with the main station through an Ethernet IEC60870-5-104 protocol and is used for collecting, merging, storing, reporting at regular time, calling at random and managing in classification all local information in the whole site;
the metering and collecting unit collects electric energy metering data of an electric energy meter in a transformer substation through a transformer substation sensor, sends the electric energy metering data to the main control unit in a timing mode through an Ethernet IEC61850 protocol for classified storage and timing release, and immediately releases the timely data in the main control unit in an MMS protocol format through an SMV message;
the protection measurement and control unit analyzes and calculates all the acquired abnormal data through the transformer substation sensor, performs corresponding protection processing according to the calculation result, and reports the calculation result to the main control unit through an Ethernet IEC61850 protocol;
the power quality monitoring unit monitors the power quality and voltage of the medium-voltage side of the transformer substation through a transformer substation sensor, and adopts Fast Fourier Transform (FFT) and fast Discrete Fourier Transform (DFT) for calculation processing, and processing results are reported to the main control unit through an Ethernet IEC61850 protocol at regular time;
the low-voltage comprehensive processing unit monitors the low-voltage side power distribution information of the transformer substation through a transformer substation sensor, and reports a monitoring processing result to the main control unit through an Ethernet IEC61850 protocol at regular time;
the equipment state monitoring unit monitors the state of key equipment in the distribution network of the transformer substation through a transformer substation sensor, and reports the monitoring result to the main control unit regularly through an Ethernet IEC61850 protocol.
Furthermore, the main control unit adopts an ADSP-BF609 dual-core microprocessing chip of ADI company, the chip is provided with two paths of Ethernet MAC protocols, wherein one path is provided with a network chip DSP83640, and the other path is provided with a network switching chip RTL 8309; the network switching chip RTL8309 is provided with 9 independent network ports, wherein 1 network port is connected with one network port of the ADSP-BF609 dual-core microprocessor chip, and in addition, 8 network ports are used for being connected with other units, so that Ethernet data switching is realized inside the whole machine.
Furthermore, the electric energy metering unit adopts ADSP-BF609 as a core processing chip, and is configured with two Ethernet ports, and one Ethernet port is used for reading metering data of a transformer substation sensor; and the other Ethernet port is used for realizing data exchange with the host backplane.
Further, the protection function of the protection measurement and control unit includes: reclosing, three-phase inrush current detection, overvoltage protection, overload alarm, PT disconnection/voltage loss alarm and fault recording.
Further, the data collected by the power quality monitoring unit in the power quality monitoring includes: fundamental, harmonic, three-phase imbalance, voltage flicker, voltage event, and fundamental; the data collected by the power quality monitoring unit in the voltage monitoring comprises: the average value and time scale of each phase voltage per minute and daily and monthly statistics are monitored.
Further, the voltage flicker is calculated as follows: the acquired discrete data are transformed through Fast Fourier Transform (FFT), and correction processing is carried out on the amplitude attenuation of the power grid voltage caused in the calculation result of the FFT, so that the error of instantaneous flicker visual sensitivity of power grid voltage output fluctuation caused by amplitude modulation waves with different frequencies is reduced.
Furthermore, the power grid voltage is formed by taking a stable power frequency voltage as a carrier wave and superposing a regular or irregular amplitude modulation wave; wherein the amplitude modulated wave contains single or multiple frequency components.
Furthermore, the low-voltage comprehensive processing unit is in data communication with the transformer substation sensor in a micro-power wireless mode.
Furthermore, the low-voltage comprehensive processing unit is provided with an RS-485 chip and is used for communicating with the multifunctional comprehensive compensation module, so that reactive compensation is realized.
Further, the monitoring content of the device status monitoring unit includes: monitoring transformer temperature, monitoring auxiliary control of a transformer fan, monitoring switch cabinet temperature, monitoring switch cabinet barometer, monitoring switch cabinet partial discharge, monitoring cable partial discharge and monitoring cable circulation.
The invention has the beneficial effects that: the terminal system adopts an integrated design, highly integrates various terminals and equipment such as a distribution automation terminal (DTU), a distribution transformer monitoring terminal (TTU), a centralized meter reading terminal, an electric energy quality analysis device, a reactive compensation control device, a three-phase electric energy meter, a comprehensive environment monitoring device and the like in a power distribution room, is uniformly designed according to the IEC61850 standard in communication of all functional modules, uniformly collects parameters required by each department of a power supply system, saves equipment cost and space of a distribution station, realizes classified distribution and information sharing of all data, and realizes data common transmission and individual acquisition of multiple departments by one equipment.
Drawings
Fig. 1 is a functional schematic diagram of the present invention.
Detailed Description
Fig. 1 shows, relates to an integrated terminal of intelligent distribution and utilization of electricity based on IEC61850 stipulation, including quick-witted case, set up the host computer backplate at quick-witted incasement, carry out communication connection's measurement acquisition unit, protection measurement and control unit, power quality monitoring unit, low pressure integrated processing unit and equipment state monitoring unit through host computer backplate and main control unit respectively to and be used for carrying out the electrical unit that supplies power to each unit of system.
For the main control unit, the main control unit communicates with a main station through an Ethernet IEC60870-5-104 protocol and is used for being responsible for acquisition, data combination, data storage, timing report, random call and classification management of all local information in the whole site;
for the metering and collecting unit, electric energy metering data of an electric energy meter in a transformer substation is collected through a transformer substation sensor, the electric energy metering data is sent to a main control unit in a timing mode through an Ethernet IEC61850 protocol for classified storage and timing release, and timely data in the electric energy metering data is immediately released in an MMS protocol format through an SMV message;
for the protection measurement and control unit, all the acquired abnormal data are analyzed and calculated through a transformer substation sensor, corresponding protection processing is carried out according to the calculation result, and meanwhile, the calculation result is reported to the main control unit through an Ethernet IEC61850 protocol;
for the electric energy quality monitoring unit, the electric energy quality and the voltage of the medium-voltage side of the transformer substation are monitored through a transformer substation sensor, calculation processing is carried out by adopting Fast Fourier Transform (FFT) and fast Discrete Fourier Transform (DFT), and a processing result is reported to the main control unit through an Ethernet IEC61850 protocol at regular time;
for the low-voltage comprehensive processing unit, monitoring low-voltage side power distribution information of a transformer substation through a transformer substation sensor, and reporting a monitoring processing result to the main control unit through an Ethernet IEC61850 protocol at regular time;
and for the equipment state monitoring unit, monitoring the state of key equipment in the distribution network of the transformer substation through a transformer substation sensor, and reporting the monitoring result to the main control unit regularly through an Ethernet IEC61850 protocol.
In the invention, a main control unit adopts an ADSP-BF609 dual-core microprocessing chip of ADI company, and the microprocessing chip is provided with two paths of Ethernet MAC protocols, wherein one path is externally provided with a network chip DSP83640, and the other path is provided with a network exchange chip RTL 8309; the network switching chip RTL8309 is provided with 9 independent network ports, wherein 1 network port is connected with one network port of the ADSP-BF609 dual-core microprocessor chip, and in addition, 8 network ports are used for being connected with all units, so that the Ethernet data switching is realized inside the whole machine.
In the invention, an ADSP-BF609 is adopted as a core processing chip of the electric energy metering unit, 2 Ethernet ports are configured on the electric energy metering unit, and one Ethernet port is used for reading the metering data of the sensor; and the other Ethernet port and the host back panel realize data exchange.
Specifically, the electric energy metering unit reads parameters such as current, voltage, frequency and phase of the loop through the Ethernet port. The device has the following measurement precision: the voltage, current, frequency, phase, active power, reactive power and electric quantity precision are equal to the conversion precision of the sensor. The sample measurement value transmission class model adopts the sample values SAV in the public data class of the measurement value information, and the exchange of the sample measurement values is based on a publish/subscribe mechanism. In view of the electric energy and harmonic calculation required by the electric energy metering unit, the sampling value is set to 256 points/cycle.
In the protection measurement and control unit, relevant data are collected from a transformer substation sensor, real-time data are analyzed and calculated, and the real-time data are respectively processed according to calculation results; if overcurrent protection is carried out, when the overcurrent condition of the line is found, three sections of overcurrent protection are immediately started, and the time of occurrence of the event is stored and reported to the main control unit. The protection function of it includes: reclosing, three-phase inrush current detection, overvoltage protection, overload alarm, PT disconnection/voltage loss alarm, fault recording and the like. When the event happens, the protection test unit can automatically and immediately process the event and report the event record to the main control unit through the Ethernet according to the IEC61850 protocol.
In the invention, the electric energy quality monitoring unit is used for monitoring the electric energy quality, and the collected data comprises the following data: fundamental wave: the specific effective values of voltage and current; voltage, current phase; active power, reactive power, apparent power, power factor, split-phase power factor; harmonic waves: specifically, the total harmonic distortion rate of the voltage and the current; 2-50 order harmonic voltage and current effective value (content); harmonic voltage, current phase; and three-phase imbalance: specifically, the voltage, current sequence components and the degree of imbalance. In addition, there is a voltage flicker: specifically, there are voltage long-time flicker and voltage short-time flicker; voltage event: the method specifically comprises voltage rising and falling waveform data and event parameters, and short-time interruption waveform data and event parameters; basic amount: specifically, the frequency, the voltage, the effective value of the current, the active power, the reactive power, the apparent power, the power factor and the like.
In the invention, the power quality monitoring unit is used for monitoring the voltage, and the collected data comprises the following data: the average value per minute and time scale of each phase voltage and daily and monthly statistics are monitored. The daily and monthly statistics include qualification rate, qualification cumulative time, upper limit rate, upper limit cumulative time, lower limit rate, lower limit cumulative time, power failure times and total power failure time.
Considering that a large amount of calculation and data processing are needed for monitoring the power quality, 2-50 harmonics need to be detected, and the content of the harmonics needs to be calculated. The fast fourier transform FFT and the fast discrete fourier transform DFT are usually adopted for calculation, the calculation amount is large, and it is necessary to ensure that the system has sufficient real-time calculation capability to ensure the real-time performance of the calculation.
In the power quality monitoring unit, the voltage flicker is calculated by the following method: the acquired discrete data are transformed through Fast Fourier Transform (FFT), and correction processing is carried out on the amplitude attenuation of the power grid voltage caused in the calculation result of the FFT, so that the error of instantaneous flicker visual sensitivity of power grid voltage output fluctuation caused by amplitude modulation waves with different frequencies is reduced.
The power grid voltage is formed by taking a stable power frequency voltage as a carrier wave and superposing a regular or irregular amplitude modulation wave; wherein the amplitude modulated wave contains single or multiple frequency components.
In addition, the low-voltage comprehensive processing unit of the invention adopts a micropower wireless mode to carry out data communication with the transformer substation sensor; the unit is provided with an RS-485 chip and is used for communicating with the multifunctional comprehensive compensation module, so that reactive compensation is realized.
In addition, the equipment state monitoring unit of the invention can realize the state monitoring of key equipment in the distribution network, and the main monitoring contents comprise: monitoring transformer temperature, monitoring auxiliary control of a transformer fan, monitoring switch cabinet temperature, monitoring switch cabinet barometer, monitoring switch cabinet partial discharge, monitoring cable partial discharge and monitoring cable circulation.
It should be noted that the RS-485 chip in the invention mainly has the following functions:
1. the device collects alternating current analog quantity (voltage, current, active power, reactive power, power factors and the like), has a wave recording function, and can display in a curve or graph mode.
2. Acquiring electric energy data: the total electric energy indicating value, each rate electric energy indicating value, the total electric energy, each rate electric energy, the maximum demand and the like.
3. Electric energy data statistics: voltage qualification rate, three-phase unbalance, voltage fluctuation and flicker, temporary or transient overvoltage, voltage sag/interruption/ramp, 2-19 harmonic components of voltage (current), harmonic content rate and total distortion rate, frequency deviation, load rate, power supply continuity and the like.
4. The system has multiple protection/alarm functions such as overvoltage protection, overcurrent protection, overload protection, undervoltage protection, overheat protection and the like, and simultaneously completes recording, storing and reporting.
5. Monitoring user electricity utilization information: the method realizes the electric energy information acquisition of the distribution station area, comprises the steps of electric energy meter data acquisition, electric energy metering device working condition and power supply electric energy quality monitoring, electric load and electric energy monitoring, and related data processing, storage, management and transmission.
6. Monitoring a distribution transformer metering summary table: the intelligent electric energy meter management system has the advantages that comprehensive management of the intelligent electric energy meter in the public power distribution station area is achieved, the metering effectiveness is checked, the abnormal operation condition of the intelligent electric energy meter is analyzed, judged and alarmed, and relevant information transmission is completed.
7. Monitoring the residual current operated protector: the monitoring of the running state and the residual current value of the residual current operated protector is realized, and the functions of recording, storing and uploading are realized.
8. And (3) state monitoring: the intelligent distribution transformer has the advantages that the oil temperature and the gas concentration of the distribution transformer, the outlet switch state of a transformer area, the switching state of a capacitor/filter, the running state of an intelligent distribution transformer terminal and the like are monitored in real time, and the intelligent distribution transformer has an abnormal alarm function.
9. Load management: the load of the distribution transformer area is comprehensively controlled and managed, and the functions of closed-loop control of the power fixed value, fixed value control of electric quantity, fixed value control of rate and remote direct control of the transformer area are realized.
10. Low-pressure comprehensive treatment: the dynamic reactive compensation and active wave filtering mixed mode is supported, the reactive power of the distribution transformer area is rapidly and dynamically compensated, the harmonic waves with variable frequency and variable size are restrained, the harmonic waves with rapidly variable load can be tracked and compensated, and the problem of three-phase imbalance of the load of the transformer area can be solved.
11. And (3) calculating line loss: the line loss and the loss of the distribution station are analyzed and calculated on site, and when the line loss exceeds a set threshold value, an alarm can be given according to a preset alarm mode.
12. And (3) economic operation analysis: the running voltage and the three-phase load balance are adjusted by analyzing the three-phase load of the distribution transformer, and the economic running of the transformer and the low-voltage line is analyzed.
13. The safety anti-theft function: the method comprises the steps of monitoring key facilities such as a distribution transformer in real time, uploading monitored abnormal information in time, and informing related personnel of information such as names and places of the abnormal facilities.
14. The electricity larceny prevention function: the power utilization information of the power distribution station area is monitored on line in real time, an abnormal processing flow is started after abnormality is found, abnormal power utilization information is uploaded in time to warn, and electricity stealing behavior is prevented.
15. Information security protection: and a hardware security module which is approved by the national password administration and meets the standard requirement of the Q/GDW 377 is adopted to realize encryption and decryption of data storage and transmission of the power distribution station area, and the accuracy, reliability and security of the data are ensured.
16. Interactive management: the wireless connection and other access modes are provided, bidirectional data interaction is completed with operation maintenance personnel and users, the users are guided to adopt reasonable power utilization structures and power utilization modes through the power price strategy, and the utilization efficiency of power resources is improved.
17. Distributed power access management: and monitoring and controlling a user side distributed power system accessed to a public power grid.
18. Environmental monitoring: temperature and humidity information of the outdoor distribution box, the distribution station and the box transformer substation is monitored in real time by adopting temperature and humidity sensors.
19. And (4) event and alarm processing, namely, alarming various events and accidents in the power distribution station area by configuring auxiliary equipment such as a sound-emitting and light-emitting device, and realizing automatic recording, recall and uploading of the events and the accidents.
20. Human-computer interaction: the transformer station remote monitoring system has the advantages that the human-computer interface is clear and easy to understand, the general key operation mode is configured in an auxiliary mode, the operation is convenient and simple, rich light indication information is provided, the operation information of the transformer station is displayed more visually, and the remote maintenance and monitoring of the device are realized by supporting remote wireless access.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intelligent power distribution and utilization integrated terminal based on an IEC61850 protocol is characterized by comprising a case, a host backboard arranged in the case, a metering acquisition unit, a protection measurement and control unit, an electric energy quality monitoring unit, a low-voltage comprehensive processing unit, an equipment state monitoring unit and a power supply unit, wherein the metering acquisition unit, the protection measurement and control unit, the electric energy quality monitoring unit, the low-voltage comprehensive processing unit and the equipment state monitoring unit are respectively in communication connection with a main control unit through the host backboard; wherein,
the main control unit is communicated with the main station through an Ethernet IEC60870-5-104 protocol and is used for collecting, merging, storing, reporting at regular time, calling at random and managing in classification all local information in the whole site;
the metering and collecting unit collects electric energy metering data of an electric energy meter in a transformer substation through a transformer substation sensor, sends the electric energy metering data to the main control unit in a timing mode through an Ethernet IEC61850 protocol for classified storage and timing release, and immediately releases the timely data in the main control unit in an MMS protocol format through an SMV message;
the protection measurement and control unit analyzes and calculates all the acquired abnormal data through the transformer substation sensor, performs corresponding protection processing according to the calculation result, and reports the calculation result to the main control unit through an Ethernet IEC61850 protocol;
the power quality monitoring unit monitors the power quality and voltage of the medium-voltage side of the transformer substation through a transformer substation sensor, and adopts Fast Fourier Transform (FFT) and fast Discrete Fourier Transform (DFT) for calculation processing, and processing results are reported to the main control unit through an Ethernet IEC61850 protocol at regular time;
the low-voltage comprehensive processing unit monitors the low-voltage side power distribution information of the transformer substation through a transformer substation sensor, and reports a monitoring processing result to the main control unit through an Ethernet IEC61850 protocol at regular time;
the equipment state monitoring unit monitors the state of key equipment in the distribution network of the transformer substation through a transformer substation sensor, and reports the monitoring result to the main control unit regularly through an Ethernet IEC61850 protocol.
2. The integrated terminal for intelligent power distribution and utilization according to claim 1, wherein the main control unit employs an ADSP-BF609 dual-core microprocessor chip of ADI corporation, the chip has two paths of ethernet MAC protocols, one path of the chip configures a network chip DSP83640, and the other path configures a network switching chip RTL 8309; the network switching chip RTL8309 is provided with 9 independent network ports, wherein 1 network port is connected with one network port of the ADSP-BF609 dual-core microprocessor chip, and in addition, 8 network ports are used for being connected with other units, so that Ethernet data switching is realized inside the whole machine.
3. The intelligent distribution and power integration integrated terminal as claimed in claim 1, wherein the electric energy metering unit adopts ADSP-BF609 as a core processing chip, and is configured with two Ethernet ports, and one Ethernet port is used for reading metering data of a transformer substation sensor; and the other Ethernet port is used for realizing data exchange with the host backplane.
4. The integrated terminal for intelligent power distribution and utilization according to claim 1, wherein the protection measurement and control unit has protection functions including: reclosing, three-phase inrush current detection, overvoltage protection, overload alarm, PT disconnection/voltage loss alarm and fault recording.
5. The intelligent power distribution and utilization integrated terminal as claimed in claim 1, wherein the data collected by the power quality monitoring unit in power quality monitoring comprises: fundamental, harmonic, three-phase imbalance, voltage flicker, voltage event, and fundamental; the data collected by the power quality monitoring unit in the voltage monitoring comprises: the average value and time scale of each phase voltage per minute and daily and monthly statistics are monitored.
6. The intelligent power distribution and utilization integrated terminal as claimed in claim 5, wherein the voltage flicker is calculated by the following method: the acquired discrete data are transformed through Fast Fourier Transform (FFT), and correction processing is carried out on the amplitude attenuation of the power grid voltage caused in the calculation result of the FFT, so that the error of instantaneous flicker visual sensitivity of power grid voltage output fluctuation caused by amplitude modulation waves with different frequencies is reduced.
7. The integrated terminal for intelligent power distribution and utilization according to claim 6, wherein the grid voltage is formed by a stable power frequency voltage as a carrier wave and a regular or irregular amplitude modulation wave superposed on the carrier wave; wherein the amplitude modulated wave contains single or multiple frequency components.
8. The integrated terminal for intelligent power distribution and utilization according to claim 1, wherein the low-voltage comprehensive processing unit is in data communication with a transformer substation sensor in a micro-power wireless mode.
9. The integrated terminal for intelligent power distribution and utilization according to claim 8, wherein the low-voltage comprehensive processing unit is provided with an RS-485 chip and is used for communicating with the multifunctional comprehensive compensation module so as to realize reactive compensation.
10. The integrated terminal for intelligent power distribution and utilization according to claim 1, wherein the monitoring content of the equipment state monitoring unit comprises: monitoring transformer temperature, monitoring auxiliary control of a transformer fan, monitoring switch cabinet temperature, monitoring switch cabinet barometer, monitoring switch cabinet partial discharge, monitoring cable partial discharge and monitoring cable circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510198530.6A CN104810923A (en) | 2015-04-23 | 2015-04-23 | Intelligent power distribution and use integrated terminal based on IEC61850 stipulation |
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| CN105553105A (en) * | 2016-01-29 | 2016-05-04 | 国家电网公司 | Integrated method of primary and secondary equipment |
| CN105572624A (en) * | 2015-12-14 | 2016-05-11 | 国网重庆市电力公司电力科学研究院 | Detection device and method of simulation digital meter |
| CN106908639A (en) * | 2017-04-28 | 2017-06-30 | 国网江苏省电力公司电力科学研究院 | A kind of intelligent digitalized metering cabinet |
| CN108848118A (en) * | 2018-03-29 | 2018-11-20 | 杭州海兴电力科技股份有限公司 | The electrical integrated communication apparatus of the means of communication, adapted and system |
| CN109116148A (en) * | 2018-07-28 | 2019-01-01 | 宋云飞 | Electric energy quality monitoring method |
| CN109151080A (en) * | 2018-10-31 | 2019-01-04 | 中原工学院 | Three phase electrical parameters monitoring and electric energy metered system based on Internet of Things |
| CN109142916A (en) * | 2018-07-28 | 2019-01-04 | 宋云飞 | Electric energy quality monitoring system |
| CN109255554A (en) * | 2018-10-12 | 2019-01-22 | 江苏亚威变压器有限公司 | A kind of low pressure matches electricity consumption monitoring and management system |
| CN109765465A (en) * | 2018-12-20 | 2019-05-17 | 福建和盛高科技产业有限公司 | A kind of enhanced power instrument with high-tension switch cabinet and cable insulation status on-line monitoring function |
| CN109831027A (en) * | 2018-12-30 | 2019-05-31 | 国网浙江省电力有限公司电力科学研究院 | A kind of flexible testing and analysis system of distribution network electric energy quality |
| CN110417058A (en) * | 2019-08-06 | 2019-11-05 | 杭州继保南瑞电子科技有限公司 | The grid-connected interface monitor system of distributed power generation access utility network |
| CN110672971A (en) * | 2019-07-04 | 2020-01-10 | 广州供电局有限公司 | Built-in fault recording device of power distribution terminal |
| CN111224464A (en) * | 2018-11-27 | 2020-06-02 | 鼎桥通信技术有限公司 | Management control information transmission method and system for multiple inverters |
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| CN105572624A (en) * | 2015-12-14 | 2016-05-11 | 国网重庆市电力公司电力科学研究院 | Detection device and method of simulation digital meter |
| CN105553105A (en) * | 2016-01-29 | 2016-05-04 | 国家电网公司 | Integrated method of primary and secondary equipment |
| CN106908639A (en) * | 2017-04-28 | 2017-06-30 | 国网江苏省电力公司电力科学研究院 | A kind of intelligent digitalized metering cabinet |
| CN108848118B (en) * | 2018-03-29 | 2021-09-10 | 杭州海兴电力科技股份有限公司 | Communication method, power distribution and utilization integrated communication equipment and system |
| CN108848118A (en) * | 2018-03-29 | 2018-11-20 | 杭州海兴电力科技股份有限公司 | The electrical integrated communication apparatus of the means of communication, adapted and system |
| CN109142916A (en) * | 2018-07-28 | 2019-01-04 | 宋云飞 | Electric energy quality monitoring system |
| CN109116148A (en) * | 2018-07-28 | 2019-01-01 | 宋云飞 | Electric energy quality monitoring method |
| CN109255554A (en) * | 2018-10-12 | 2019-01-22 | 江苏亚威变压器有限公司 | A kind of low pressure matches electricity consumption monitoring and management system |
| CN109151080A (en) * | 2018-10-31 | 2019-01-04 | 中原工学院 | Three phase electrical parameters monitoring and electric energy metered system based on Internet of Things |
| CN111224464A (en) * | 2018-11-27 | 2020-06-02 | 鼎桥通信技术有限公司 | Management control information transmission method and system for multiple inverters |
| CN111224464B (en) * | 2018-11-27 | 2022-07-19 | 鼎桥通信技术有限公司 | Management control information transmission method and system for multiple inverters |
| CN109765465A (en) * | 2018-12-20 | 2019-05-17 | 福建和盛高科技产业有限公司 | A kind of enhanced power instrument with high-tension switch cabinet and cable insulation status on-line monitoring function |
| CN109831027A (en) * | 2018-12-30 | 2019-05-31 | 国网浙江省电力有限公司电力科学研究院 | A kind of flexible testing and analysis system of distribution network electric energy quality |
| CN110672971A (en) * | 2019-07-04 | 2020-01-10 | 广州供电局有限公司 | Built-in fault recording device of power distribution terminal |
| CN110417058A (en) * | 2019-08-06 | 2019-11-05 | 杭州继保南瑞电子科技有限公司 | The grid-connected interface monitor system of distributed power generation access utility network |
| CN111562416A (en) * | 2020-04-30 | 2020-08-21 | 广东电网有限责任公司 | Electric power data acquisition device |
| CN112001550A (en) * | 2020-08-25 | 2020-11-27 | 杭州电力设备制造有限公司 | Multipoint power quality monitoring system for transformer substation |
| CN112613691A (en) * | 2020-11-09 | 2021-04-06 | 贵州电网有限责任公司 | Chip relay protection universal device |
| CN112630552A (en) * | 2020-12-16 | 2021-04-09 | 国家电网有限公司华东分部 | Method for determining unbalance degree of bus electric quantity |
| CN112630552B (en) * | 2020-12-16 | 2021-08-31 | 国家电网有限公司华东分部 | Method for determining unbalance degree of bus electric quantity |
| CN113079208A (en) * | 2021-03-26 | 2021-07-06 | 南方电网数字电网研究院有限公司 | Ethernet-based distributed control system and method for power distribution network |
| CN113079208B (en) * | 2021-03-26 | 2023-01-20 | 南方电网数字电网研究院有限公司 | Ethernet-based distributed control system and method for power distribution network |
| CN116131467A (en) * | 2023-04-13 | 2023-05-16 | 深圳市凌祺实业有限公司 | Can monitor controllable thing networking block terminal |
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