CN103401311A - Intelligent power distribution terminal - Google Patents

Intelligent power distribution terminal Download PDF

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Publication number
CN103401311A
CN103401311A CN2013103426016A CN201310342601A CN103401311A CN 103401311 A CN103401311 A CN 103401311A CN 2013103426016 A CN2013103426016 A CN 2013103426016A CN 201310342601 A CN201310342601 A CN 201310342601A CN 103401311 A CN103401311 A CN 103401311A
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CN
China
Prior art keywords
circuit
power
intelligent
distribution terminal
power distribution
Prior art date
Application number
CN2013103426016A
Other languages
Chinese (zh)
Inventor
赵勤标
Original Assignee
浙江威奇电气有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 浙江威奇电气有限公司 filed Critical 浙江威奇电气有限公司
Priority to CN2013103426016A priority Critical patent/CN103401311A/en
Publication of CN103401311A publication Critical patent/CN103401311A/en

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Abstract

The invention relates to an intelligent power distribution terminal. The intelligent power distribution terminal communicates with an intelligent meter through a 485 bus, and communicates with a remote main station in a wireless manner; real-time power of the intelligent meter is read and compared with a preset power limit value, and user load is fed back to the remote main station when the real-time power is greater than the power limit value; and user overload is processed by the remote main station. The intelligent power distribution terminal comprises a main control chip CPU (Central Processing Unit), a 485 communication circuit, a GPRS (General Packet Radio Service) communication module, a serial port communication circuit, a system reset circuit, a storage circuit, a clock circuit, an alarm circuit, a trip circuit, a two-way DI (Data Input) detection circuit, a standby battery and a charging circuit of the standby battery, an LED (Light Emitting Diode) indicating circuit and a power supply circuit; and the main control chip CPU is orderly connected with the GPRS communication module and each circuit. The intelligent power distribution terminal realizes that electrical conditions of large-capacity load users are monitored and controlled by the remote (main station), and is novel in structure, complete in function and flexible to use.

Description

A kind of Intelligent power distribution terminal

Technical field

The invention belongs to electrical equipment technical field, particularly relate to a kind of Intelligent power distribution terminal of remote monitoring.

Background technology

At present, power department generally adopts installs Intelligent power distribution terminal (negative control terminal), realizes the demands such as distribution transformer monitoring, remote meter reading.Built up the unified management platform by the whole province as Zhejiang Province, but, for the situation of some large volume loads of low-voltage-powered user that specially do not become, fail to install Intelligent power distribution terminal, in peak times of power consumption,, owing to lacking effective management means, often can not carry out the ordered electric plan of power department.

Intelligent power distribution cabinet with respect to traditional power distribution cabinet increased monitoring of electric power terminal, with the circuit breaker of trip gear and the electric shock device of feedback switch state.Can gather the tripping operation of ammeter data and control switch, with respect to the negative control on market, function is simple, and is with low cost.Supporting management Master Station Software, realize urgent trip remotely and by setting, carry out the control of power period, can help power department better to manage these districts.

Summary of the invention

The invention provides a kind of Intelligent power distribution terminal, realize large volume load user power utilization situation by long-range (main website) monitoring and controlling, its novel structure, multiple functional, use flexibly.

The present invention solves the technical scheme that its technical problem takes:

A kind of Intelligent power distribution terminal, it is communicated by letter with intelligent electric meter by 485 buses, by wireless mode and long-range master station communication; Read the intelligent electric meter realtime power and with default power limit relatively, realtime power feeds back to long-range main website with customer charge during greater than power limit; By long-range main website, user's excess load is processed.

Radio communication between described and long-range main website be keep the certain hour interval communicate by letter to determine that current universal data link is unimpeded.

Described power limit is set by keyboard to set up or by long-range main website.

Described a kind of Intelligent power distribution terminal, comprise main control chip CPU, 485 telecommunication circuits, GPRS communication module, serial communication circuit, system reset circuit, memory circuit, clock circuit, warning circuit, trip circuit, two-way DI testing circuit, reserve battery and charging circuit, LED indicating circuit and power circuit; Described main control chip CPU is connected between each circuit with being connected in order with the GPRS communication module.

Described power circuit comprises voltage conversion circuit, main control chip power supply circuits, reserve battery power supply circuits and wireless communication module power supply circuit.

This Intelligent power distribution terminal also comprises spare interface.

The present invention communicates by letter with intelligent electric meter by 485 buses, reads the current realtime power of intelligent electric meter, by the power limit with default relatively, will feed back to greater than the customer charge of power limit long-range main website, by long-range main website, user's excess load is processed.

The present invention is that GPRS communicates by letter with the communication mode of long-range main website.Long-range main website and data of the present invention do not need real-time update, only need keep the communication at certain hour interval to determine that current universal data link is unimpeded.Long-range main website can revise that the present invention presets power limit.

In practice, long-range main website can carry out active warning to the excessive situation of user power utilization of the present invention load is installed, in case of necessity can the disconnected end load and being connected of electrical network.

Operation principle of the present invention and beneficial effect are: master cpu reads the clock of clock circuit, according to the condition of setting (comprising that main website sets and keyboard to set up),, regularly by GPRS communication module and master station communication, with definite current universal data link, is unimpeded.Master cpu passes through 485 bus Real-time Collection users' load data, and with default power limit, compares, and initiatively will feed back to main website by the GPRS communication module over the event of preset value, by main website, event is processed.Master cpu with Real-time Feedbacks such as the abnormal information of native system such as RS485 communication abnormality, terminal breaker tripping and closing and terminal power failures to main website.

Description of drawings

Fig. 1 is operation principle block diagram of the present invention.

Fig. 2 is main control chip CPU structural representation in one embodiment of the present invention.

Fig. 3 is 485 telecommunication circuit structural representations in one embodiment of the present invention.

Fig. 4 is GPRS communication module structural representation in one embodiment of the present invention.

Fig. 5 is serial communication circuit structural representation in one embodiment of the present invention.

Fig. 6 is system reset circuit structural representation in one embodiment of the present invention.

Fig. 7 is memory circuit structure schematic diagram in one embodiment of the present invention.

Fig. 8 is clock circuit structural representation in one embodiment of the present invention.

Fig. 9 is warning circuit structural representation in one embodiment of the present invention.

Figure 10 is trip circuit structural representation in one embodiment of the present invention.

Figure 11 is two-way DI testing circuit structural representation in one embodiment of the present invention.

Figure 12 is charging circuit of stand-by battery structural representation in one embodiment of the present invention.

Figure 13 is LED indicating circuit structural representation in one embodiment of the present invention.

Figure 14 is circuit construction of electric power schematic diagram in one embodiment of the present invention.

Figure 15 is spare interface electrical block diagram in one embodiment of the present invention.

Embodiment

The invention will be further described below in conjunction with drawings and Examples:

A kind of Intelligent power distribution terminal, comprise main control chip CPU(such as Fig. 2), 485 telecommunication circuits (as Fig. 3), GPRS communication module (as Fig. 4), serial communication circuit (as Fig. 5), system reset circuit (as Fig. 6), memory circuit (as Fig. 7), clock circuit (as Fig. 8), warning circuit (as Fig. 9), trip circuit (as Figure 10), two-way DI testing circuit (as Figure 11), reserve battery, charging circuit (as Figure 12), LED indicating circuit (as Figure 13) and power circuit (as Figure 14); Power circuit comprises voltage conversion circuit, main control chip power supply circuits, reserve battery power supply circuits and wireless communication module power supply circuit; It can also comprise spare interface (spare interface circuit such as Figure 15).Be connected namely and connect according to the word that marks in figure or symbol in order between main control chip CPU and GPRS communication module and each circuit.Its operation principle as shown in Figure 1.

Main control chip CPU(U15) communicate by letter with ammeter by 485 telecommunication circuits, the real-time current performance number of reading electric meters, 485 telecommunication circuits are by optocoupler U2, U5, U8 and insulating power supply U1 and main control chip CPU isolation, and U6 is 485 communication chips.The data that main control chip CPU will read back from ammeter, process according to time of real-time clock and default power limit and period.

U12 is real-time timepiece chip, and BAT1 is its back-up source, and after guaranteeing that power supply breaks, real-time clock still can continue operation.

U13 is FeRAM memory chip, preserves important parameter, and power down can not lost.

Main control chip CPU deal with data, in the time of need to feeding back to main website, by wireless communication module, data are sent to main website, or main website sends to the GPRS communication module with parameters such as preset values, main control chip CPU obtains data from the GPRS communication module, CN4 EM310 is GPRS communication module chip, and SIM1 is the supporting SIM card of GPRS communication module.

U9, U10, U16, U17 are the serial communication circuit chip, the main serial communications such as downloading debugging of carrying out.

U21, U22 are that two-way DI input detects a mouthful chip, detect the feedback signal of tripping operation,, to determine the being successfully completed tripping operation action, determine that circuit breaker is in off-state after carrying out tripping operation.

P3 is the relay of trip circuit, by it, circuit breaker is disconnected, and trip circuit has coordinated tripping operation and tripping operation to confirm with U21, U22.

U3, U4, U7 are master cpu external reset circuit chip, when CPU crashes, by U7, are responsible for to reset signal of CPU, and the CPU that resets, restart work.

When external power source breaks, power to main control chip CPU through reserve battery power supply circuits (chip U11) by the lithium battery that the J1 mouth connects, also give simultaneously other circuit supplies, make it complete data and preserve and to main website, send the order of this tester in power-down state, so that main website in time goes and finds out what's going on and processes.

U20, U23 are the charging circuit chip of lithium battery, and charging circuit is responsible for to lithium cell charging.

Q5 is the switching device of warning circuit, is responsible for alarming horn is opened and closed.

The LED indicating circuit, indicate online, trip and other running statuses.

Claims (6)

1. an Intelligent power distribution terminal, is characterized in that, communicates by letter with intelligent electric meter by 485 buses, by wireless mode and long-range master station communication; Read the intelligent electric meter realtime power and with default power limit relatively, realtime power feeds back to long-range main website with customer charge during greater than power limit; By long-range main website, user's excess load is processed.
2. Intelligent power distribution terminal according to claim 1, is characterized in that, the radio communication between described and long-range main website be keep the certain hour interval communicate by letter to determine that current universal data link is unimpeded.
3. Intelligent power distribution terminal according to claim 1, is characterized in that, described power limit is set by keyboard to set up or by long-range main website.
4. according to claim 1,2 or 3 described Intelligent power distribution terminals, it is characterized in that, comprise main control chip CPU, 485 telecommunication circuits, GPRS communication module, serial communication circuit, system reset circuit, memory circuit, clock circuit, warning circuit, trip circuit, two-way DI testing circuit, reserve battery and charging circuit, LED indicating circuit and power circuit; Described main control chip CPU is connected between each circuit with being connected in order with the GPRS communication module.
5. Intelligent power distribution terminal according to claim 4, is characterized in that, described power circuit comprises voltage conversion circuit, main control chip power supply circuits, reserve battery power supply circuits and wireless communication module power supply circuit.
6. Intelligent power distribution terminal according to claim 4, is characterized in that, also comprises spare interface.
CN2013103426016A 2013-08-08 2013-08-08 Intelligent power distribution terminal CN103401311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013103426016A CN103401311A (en) 2013-08-08 2013-08-08 Intelligent power distribution terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013103426016A CN103401311A (en) 2013-08-08 2013-08-08 Intelligent power distribution terminal

Publications (1)

Publication Number Publication Date
CN103401311A true CN103401311A (en) 2013-11-20

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Application Number Title Priority Date Filing Date
CN2013103426016A CN103401311A (en) 2013-08-08 2013-08-08 Intelligent power distribution terminal

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734340A (en) * 2013-12-20 2015-06-24 国家电网公司 Power consumption monitoring terminal
CN104734341A (en) * 2013-12-20 2015-06-24 国家电网公司 Power consumption monitoring terminal
CN105553805A (en) * 2015-12-15 2016-05-04 深圳市汇川控制技术有限公司 Master station power-down protection system and method in CAN (Controller Area Network) network

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202309232U (en) * 2011-11-08 2012-07-04 北京电研华源电力技术有限公司 Intelligent power distribution terminal
CN102738894A (en) * 2012-06-06 2012-10-17 中国电力科学研究院 Modularized intelligent power distribution terminal based on bus port
CN202840683U (en) * 2012-07-31 2013-03-27 湖南斯凯电气有限公司 Low-voltage grid intelligent distribution transformer terminal
CN103138395A (en) * 2011-12-05 2013-06-05 中国科学院沈阳自动化研究所 Building intelligent power consumption management system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202309232U (en) * 2011-11-08 2012-07-04 北京电研华源电力技术有限公司 Intelligent power distribution terminal
CN103138395A (en) * 2011-12-05 2013-06-05 中国科学院沈阳自动化研究所 Building intelligent power consumption management system
CN102738894A (en) * 2012-06-06 2012-10-17 中国电力科学研究院 Modularized intelligent power distribution terminal based on bus port
CN202840683U (en) * 2012-07-31 2013-03-27 湖南斯凯电气有限公司 Low-voltage grid intelligent distribution transformer terminal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734340A (en) * 2013-12-20 2015-06-24 国家电网公司 Power consumption monitoring terminal
CN104734341A (en) * 2013-12-20 2015-06-24 国家电网公司 Power consumption monitoring terminal
CN105553805A (en) * 2015-12-15 2016-05-04 深圳市汇川控制技术有限公司 Master station power-down protection system and method in CAN (Controller Area Network) network
CN105553805B (en) * 2015-12-15 2019-04-19 深圳市汇川控制技术有限公司 Main website power down protection system and method in CAN network

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Application publication date: 20131120