CN104993586A - Monitoring information access automation identification diagnosis system and method - Google Patents

Abstract

The invention discloses a monitoring information access automatic identification and diagnosis system and method, including associating the monitoring information access automatic identification and diagnosis system with dispatch automation and power distribution automation master stations; according to the dispatch automation and power distribution automation terminal equipment types and Compile the standard information base for different models; use the standard information base to automatically check the names of signals in the master station system of dispatching automation and power distribution automation; prompt the staff when the meaning is inaccurate, unclear, prone to ambiguity, and different names for the same signal , which provides a reliable basis for the access of substation or distribution station monitoring information. Through the automatic identification and diagnosis of the system, the work efficiency is greatly improved; through the formation of unified and standardized monitoring information, the dispatching operation and monitoring personnel can monitor the signals collected in the system It can be grasped more clearly, and the fault signal can be clearly judged when sending faults and large-scale information, ensuring the safety of the power grid.

Description

A monitoring information access automatic identification and diagnosis system and method

technical field

The invention belongs to the technical field of power grid dispatching automation, and in particular relates to an automatic identification and diagnosis system and method for monitoring information access.

Background technique

The monitoring information of each substation (opening and closing station) is also different due to the large time span of station construction, design method, equipment manufacturer, equipment model and operation and maintenance mode of each operation department in Chengnan dispatching automation system and power distribution automation system. , there is no unified specification, and distribution automation is a new thing, and there is not much experience to follow. Unclear information classification, different names for the same signal, and similar names for different signals have caused a lot of trouble for scheduling operations and terminal staff. Especially when the power grid fails, the amount of information generated is large, which causes great interference to the dispatching and operating personnel to accurately judge the accident, and also causes great trouble to the later analysis of the accident.

The automatic identification and diagnosis system for monitoring information access can automatically identify and maintain real-time terminal monitoring information based on distribution automation monitoring information collection specifications, provide alarms for illegal information and inaccurate information, and automatically generate specification points for access equipment surface. Provide a reliable basis for the monitoring information access of substations (distribution stations), and improve work efficiency.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a monitoring information access automatic identification and diagnosis system and method, aiming to solve the problem of complex and diverse equipment for collecting and monitoring information in dispatching automation and power distribution automation systems, complicated information and no unified specification, and the monitoring of dispatching personnel. The power grid poses a big problem.

The embodiment of the present invention is achieved in this way, a monitoring information access automatic identification and diagnosis system, the monitoring information access automatic identification and diagnosis system includes:

The monitoring information association module connects the monitoring information to the automatic identification and diagnosis system and associates it with the main station of dispatching automation and power distribution automation;

Compile the standard information library module, and compile the standard information library according to the different types and models of dispatching automation and power distribution automation terminal equipment;

The checking module automatically checks the names of signals in the master station system of dispatching automation and power distribution automation with the standard information base;

The prompt module reminds the staff of inaccurate, unclear, ambiguous meanings and different names of the same signal.

Another object of the present invention is to provide a monitoring information access automatic identification diagnosis method, the monitoring information access automatic identification diagnosis method includes the following steps:

Step 1, connecting the monitoring information to the automatic identification and diagnosis system and associating with the main station of dispatching automation and power distribution automation;

Step 2, compile the standard information base according to the different types and models of dispatching automation and power distribution automation terminal equipment;

Step 3, use the standard information database to automatically check the names of the signals in the dispatching automation and power distribution automation master station systems;

Step 4: Notify the staff that the meaning is inaccurate, unclear, prone to ambiguity, and different names for the same signal.

Further, the monitoring information is connected to the standard library of the automatic identification and diagnosis method to automatically generate a specification point table for newly connected substation or switching station equipment.

Further, the distribution automation terminal is set in the primary equipment of the distribution network, and the distribution automation terminal includes:

The data acquisition module is connected to the primary equipment through the terminal block, and collects the three-phase AC voltage, AC current, DC flow, short-circuit fault current and ground fault current of the primary equipment;

The data processing module is connected with the data acquisition module, analyzes and processes the data collected by the data acquisition module, and realizes voltage, current, zero-sequence voltage, zero-sequence current, active power, reactive power, power factor, frequency measurement, analysis and calculation of harmonic components, three-phase unbalance, and real-time phase angle;

The controller is connected to the data processing module, compares the data analysis result of the data processing module with the preset value and state, and judges whether the primary device fails, and if a fault occurs, controls the action of the primary device;

The backup power supply module is connected with the controller, and is used to ensure the operation of the power distribution terminal and the communication equipment after the power failure of the line.

Further, the data acquisition module adopts a device for measuring AC voltage, AC current and DC current;

The backup power supply module adopts storage battery or supercapacitor.

Further, the distribution automation terminal further includes a switch, which is connected to the controller and the distribution automation master station, and sends fault information to the distribution automation master station.

Further, the power distribution automation terminal also includes a power management module connected to the controller, equipped with non-relay switching dual mains input, mains power failure alarm, battery equalization/float charge control, low voltage alarm, undervoltage Pressure cut, activation control function;

The distribution automation terminal also includes a display module connected to the controller for displaying the measurement results and operation instructions of the distribution automation terminal;

The display module adopts a liquid crystal screen.

Further, the liquid crystal screen includes an energy-saving device, and the energy-saving device specifically includes:

The side backlight drive circuit corresponds to the side backlight arranged on the rectangular frame of the liquid crystal screen, and is used to control the brightness of the LED lights on the side backlight;

The energy-saving control module is implemented by a CPU, and the CPU controls the drive chip of the side backlight drive circuit corresponding to the side backlight individually through I2C, and is used to send a control command to the side backlight drive circuit when the liquid crystal screen is in the middle display mode, Indicates that the driving circuit of the side backlight board reduces the brightness of the LED light on the side backlight board of the frame where the black screen area is located by 10% to 30%; The side backlight drive circuit sends control commands, or at the same time sends control commands to the side backlight drive circuits corresponding to the two side backlight panels in the frame where the black screen area is located;

The side backlight drive circuit includes:

The boost circuit is used to keep the LED lights on the side backlight board at a stable voltage and current;

The control switch is used to control the conduction time of the LED light on the side backlight board, and the drain of the control switch is connected to the negative pole of the LED light;

The driver chip is used to control the conduction time of the control switch through the conduction duty cycle Q of the PWM signal output by LED_CON, wherein, Q=t1/T, T is a conduction and cut-off period of the control switch , t1 is the conduction time of the control switch.

Further, in the energy-saving control module, the middle display mode is a display mode in which the left and right areas are black screens when the liquid crystal screen normally displays images, or the display mode in which the upper and lower sides areas are black screens.

The monitoring information access automatic identification and diagnosis system and method provided by the present invention provide a reliable basis for the monitoring information access of substations or power distribution stations, and greatly improve work efficiency through automatic identification and diagnosis of the system; through the formation of a unified and standardized The monitoring information enables dispatching and monitoring personnel to have a clearer grasp of the signals collected in the system, and can clearly judge fault signals when sending faults and large-scale information, ensuring the safety of the power grid. The standard library adopted in the present invention automatically generates a standard point table for newly connected substation or switching station equipment, ensuring the accuracy of information connected to the system, reducing the maintenance workload of staff in the later stage, and greatly improving work efficiency. The standard library adopted in the present invention automatically generates a standard point table for newly connected substation or switching station equipment, ensuring the accuracy of information connected to the system, reducing the maintenance workload of staff in the later stage, and greatly improving work efficiency. The power distribution terminal of the present invention adopts a modular design, has scalability, and is convenient for function expansion and on-site upgrade; the power distribution terminal and primary equipment adopt a standardized interface, which is convenient for on-site construction, installation and debugging; the backup power supply of the power distribution terminal can use batteries or super capacitors and other methods; the power distribution terminal has obvious status indications such as device operation, communication, and remote signaling, and has non-contact maintenance methods; Good heat dissipation; the power distribution terminal can meet the functional requirements of automatic isolation of faults in the self-healing ring and automatic recovery of non-faulty areas; the power distribution terminal adopts industrial-grade standard design to meet the requirements of various harsh operating environments.

Description of drawings

Fig. 1 is a flow chart of a monitoring information access automatic identification and diagnosis method provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a power distribution automation terminal provided by an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the monitoring information access automatic identification and diagnosis method of the embodiment of the present invention includes the following steps:

S101: Connect the monitoring information to the automatic identification and diagnosis system and associate it with the master station of dispatching automation and power distribution automation;

S102: Prepare a standard information base according to the different types and models of dispatching automation and power distribution automation terminal equipment;

S103: Use the standard information database to automatically check the names of the signals in the dispatching automation and distribution automation master station systems;

S104: Notify the staff of situations such as inaccurate meaning, unclear meaning, ambiguity, and different names for the same signal.

Further, as shown in Figure 2, the present invention provides a power distribution automation terminal, which is set in the primary equipment of the distribution network, and the primary equipment includes a ring network unit, a pole-mounted circuit breaker, a line monitoring point and so on:

The distribution automation terminal described includes:

Data collection module 107, it connects primary equipment by connecting terminal, collects the three-phase alternating voltage of primary equipment, alternating current, direct flow, short-circuit fault current and grounding fault current; This data collection module 107 adopts and can measure alternating voltage, alternating current and Devices for direct current;

Data processing module 108, it is connected with described data acquisition module 107, the data collected by data acquisition module 107 is analyzed and processed, realizes voltage, current, zero-sequence voltage, zero-sequence current, active power, reactive power, power factor , frequency measurement, analysis and calculation of harmonic components, three-phase unbalance, and real-time phase angle;

Controller 101, which is connected to the data processing module 108, the controller 101 compares the data analysis result of the data processing module 108 with the preset value and state, and judges whether the primary device breaks down, and if a fault occurs, controls the primary Equipment actions, such as start-stop operation, disconnection of circuit breaker, closure of section switch, etc.; the controller 101 adopts a digital signal processor or a microprocessor;

Switch 106, which connects the controller 101 and the distribution automation master station, and sends the fault information to the distribution automation master station;

The power management module 102, which is connected to the controller 101, is provided with non-relay switching dual-way mains input, mains failure alarm, storage battery equalization/float charge control, low voltage alarm, undervoltage cut-off, activation control (remote charge and discharge) and other functions;

The backup power supply module 103, which is connected to the controller 101, can at least ensure that the power distribution terminal and communication equipment work for 12 hours after the power failure of the line, and complete 10 opening-closing operations of all switches; the backup power supply module 103 can use Various methods such as storage battery or super capacitor;

An interface module 104, which connects the controller 101 and the primary equipment, and sends the operation instruction of the controller 101 to the primary equipment; the interface module 104 is an Ethernet interface, an optical fiber interface, an RS232 interface, etc.;

A display module 105, which is connected to the controller 101, displays the measurement results and operation instructions of the power distribution automation terminal; the display module can use a display device such as a liquid crystal screen;

Further, the liquid crystal screen includes an energy-saving device, and the energy-saving device specifically includes:

The side backlight drive circuit corresponds to the side backlight arranged on the rectangular frame of the liquid crystal screen, and is used to control the brightness of the LED lights on the side backlight;

The energy-saving control module is implemented by a CPU, and the CPU controls the drive chip of the side backlight drive circuit corresponding to the side backlight individually through I2C, and is used to send a control command to the side backlight drive circuit when the liquid crystal screen is in the middle display mode, Indicates that the driving circuit of the side backlight board reduces the brightness of the LED light on the side backlight board of the frame where the black screen area is located by 10% to 30%; The side backlight drive circuit sends control commands, or at the same time sends control commands to the side backlight drive circuits corresponding to the two side backlight panels in the frame where the black screen area is located;

The side backlight drive circuit includes:

The boost circuit is used to keep the LED lights on the side backlight board at a stable voltage and current;

The control switch is used to control the conduction time of the LED light on the side backlight board, and the drain of the control switch is connected to the negative pole of the LED light;

The driver chip is used to control the conduction time of the control switch through the conduction duty cycle Q of the PWM signal output by LED_CON, wherein, Q=t1/T, T is a conduction and cut-off period of the control switch , t1 is the conduction time of the control switch.

Further, in the energy-saving control module, the middle display mode is a display mode in which the left and right areas are black screens when the liquid crystal screen normally displays images, or the display mode in which the upper and lower sides areas are black screens.

Working principle of the present invention:

The invention connects the monitoring information into the automatic identification and diagnosis system and associates the main station of dispatching automation and power distribution automation. According to the different types and models of dispatching automation and power distribution automation terminal equipment, the standard information base is compiled. This information base covers all kinds of equipment that need to collect signals, and automatically generates standard monitoring information names through monitoring information access to the automatic identification and diagnosis system. Use this standard information base to automatically check the names of signals in the master station system of dispatching automation and power distribution automation, and remind the staff of inaccurate, unclear, ambiguous and different names of the same signal, etc., and the staff can follow the standard The library changes the name of the monitoring information in the system to reduce the disturbance to dispatchers in case of failure.

This standard library automatically generates a specification point table for the newly connected substation (opening and closing station) equipment to ensure the accuracy of the information connected to the system, reduce the maintenance workload of the staff, and greatly improve the work efficiency.

The invention provides a reliable basis for the monitoring information access work of the substation (distribution station), and greatly improves the work efficiency through the automatic identification and diagnosis of the system; through the formation of unified and standardized monitoring information, the dispatching operation and monitoring personnel can monitor the signals collected in the system It can be grasped more clearly, and the fault signal can be clearly judged when sending faults and large-scale information, ensuring the safety of the power grid.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (9)

1. monitor message accesses an automatic identifying and diagnosing system, it is characterized in that, this monitor message accesses automatic identifying and diagnosing system and comprises:

Monitor message relating module, accesses automatic identifying and diagnosing system and is associated with dispatching automation, power distribution automation main website by monitor message;

Level of organization Knowledge Base Module, according to the different level of organization information banks of dispatching automation, distribution power automation terminal device category and model;

Check module, with each signal name in standard information storehouse automatic checking dispatching automation, power distribution automation main station system;

Reminding module, implication is inaccurate, unclear, easily to produce ambiguity and same signal different names situation is prompted to staff.

2. monitor message accesses an automatic identifying and diagnosing method, it is characterized in that, this monitor message accesses automatic identifying and diagnosing method and comprises the following steps:

Step one, accesses automatic identifying and diagnosing system and is associated with dispatching automation, power distribution automation main website by monitor message;

Step 2, according to the different level of organization information banks of dispatching automation, distribution power automation terminal device category and model;

Step 3, with each signal name in standard information storehouse automatic checking dispatching automation, power distribution automation main station system;

Step 4, implication is inaccurate, unclear, easily to produce ambiguity and same signal different names situation is prompted to staff.

3. monitor message as claimed in claim 2 accesses automatic identifying and diagnosing method, it is characterized in that, this monitor message accesses the java standard library of automatic identifying and diagnosing method to new access transformer station or Switching Station equipment automatic generating standard point table.

4. monitor message as claimed in claim 1 accesses automatic identifying and diagnosing method, and it is characterized in that, described distribution power automation terminal is arranged in the primary equipment of power distribution network, and described distribution power automation terminal comprises:

Data acquisition module, connects primary equipment by binding post, gathers the three-phase alternating voltage of primary equipment, alternating current, DC quantity, short-circuit current and earth fault current;

Data processing module, be connected with described data acquisition module, to the data analysis process that described data collecting module collected arrives, realize the measurement of voltage, electric current, residual voltage, zero-sequence current, active power, reactive power, power factor, frequency, the analytical calculation at harmonic component, tri-phase unbalance factor, real-time phase angle;

Controller, is connected with described data processing module, the data results of described data processing module and the numerical value preset and state is contrasted, judges whether primary equipment breaks down, if break down, then controls primary equipment action;

Back-up source module, is connected with described controller, for ensureing distribution terminal and communication device works after line outage.

5. monitor message as claimed in claim 4 accesses automatic identifying and diagnosing method, it is characterized in that, described data acquisition module adopts the device measuring alternating voltage, alternating current and direct current;

Described back-up source module adopts storage battery or super capacitor.

6. monitor message as claimed in claim 4 accesses automatic identifying and diagnosing method, and it is characterized in that, described distribution power automation terminal also comprises switch, is connected with described controller and power distribution automation main website, fault message is sent to power distribution automation main website.

7. monitor message as claimed in claim 4 accesses automatic identifying and diagnosing method, it is characterized in that, described distribution power automation terminal also comprises power management module, be connected with described controller, possess the two-way civil power input of non-relay switching, the alarm of civil power dead electricity, storage battery all fills/floating charge control, low pressure warning, under-voltage excision, activation controlling functions;

Described distribution power automation terminal also comprises display module, is connected with described controller, for showing measurement result and the operation instruction of distribution power automation terminal;

Described display module adopts liquid crystal display screen.

8. monitor message as claimed in claim 7 accesses automatic identifying and diagnosing method, and it is characterized in that, described liquid crystal display screen comprises energy saver, and described energy saver specifically comprises:

Side backlight board drive circuit, corresponding with the side backlight being located at liquid crystal display screen rectangular shaped rim, for controlling the brightness of LED in the backlight of described side;

Energy-saving control module, CPU is adopted to realize, CPU controls separately the driving chip of side backlight board drive circuit corresponding to side backlight by I2C, for when liquid crystal display screen mediates display mode, control command is sent, the brightness of LED 10% to 30% in the side backlight of backlight board drive circuit reduction place, blank screen region, instruction side frame to described side backlight board drive circuit; Described energy-saving control module is when liquid crystal display screen mediates display mode, a described side backlight board drive circuit separately to place, blank screen region frame sends control command, or sends control command to the side backlight board drive circuit that two pieces of side backlight of place, blank screen region frame are corresponding simultaneously;

Described side backlight board drive circuit comprises:

Booster circuit, keeps stable voltage and current for making LED in the backlight of side;

Control switch, for controlling the ON time of LED in the backlight of described side, the drain electrode of described control switch connects the negative pole of LED;

Driving chip, for the conducting duty ratio Q of pwm signal exported by LED_CON, control the ON time of described control switch, wherein, Q=t1/T, T are a conducting, the off period of described control switch, and t1 is the ON time of described control switch.

9. monitor message as claimed in claim 8 accesses automatic identifying and diagnosing method, it is characterized in that, in described energy-saving control module, described middle display mode is that liquid crystal display screen is when normally showing image, region, the left and right sides is the display mode of blank screen, or two side areas is the display mode of blank screen up and down.