CN103365267B - A kind of spacing layer device for transformer station and its implementation with self-recovering function - Google Patents

Abstract

The invention relates to the field of electric power system automation, in particular to a transformer substation bay layer device with self-recovery function and a realization method thereof. The device includes a monitoring and self-inspection area, a functional module and a redundant resource module communicating with it, and the monitoring and self-inspection area is controlled by a CPU. On the basis of the development of programmable logic devices, the present invention effectively utilizes the hardware resources of programmable logic devices, divides the application functions of the bay layer equipment, and monitors and switches the operating status of each functional module through the peripheral monitoring module. When the bay layer equipment fails, the faulty module can be quickly identified and isolated, and the automatic recovery process can be started, thereby ensuring the safety and reliability of the bay layer equipment operation, reducing the workload of on-site maintenance of the bay layer equipment, and saving the smart substation. Operation and maintenance funds.

Description

A substation bay layer device with self-recovery function and its realization method

technical field

The invention relates to the field of power system automation, in particular to manufacturing power system automation equipment and its implementation method, in particular to a substation bay layer equipment with self-recovery function and its implementation method.

Background technique

The intelligent substation bay layer equipment is mainly used to summarize the real-time data information of the interval process layer, implement the protection and control function of the primary equipment, and control functions such as the operation lock and operation synchronization of the interval, and has the communication function connecting the preceding and the following. At present, most of the bay layer equipment adopts a multi-processor system composed of CPU, digital signal processor (DSP) and field programmable gate array (FPGA), and sometimes even uses multiple multi-processor systems to realize the functions of a device . In this way of implementation, on the one hand, a large number of hardware resources integrated by the multiprocessor system itself are idle because they do not meet the needs of device functions; Configured performance requirements. In addition, the larger the scale and the higher the degree of integration of a system composed of multiple multi-processors, the longer it takes to run and switch functions of the system, the more difficult it is to synchronize and share data, and the lower the resource utilization rate is. There are advantages brought by the development of software and hardware resources. Most of the existing research on the implementation of bay layer equipment focuses on the data collection and arrangement of devices, the improvement of function integration, and the realization of some advanced applications, and less attention is paid to the self-adaptability and self-healing capabilities of bay layer equipment.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a substation bay layer equipment with self-recovery function, and another purpose is to provide a method for realizing the substation bay layer equipment with self-recovery function. On the basis of device development, effectively utilize the hardware resources of the equipment at the bay layer, divide the application functions of the equipment at the bay layer, and monitor and switch the operating status of each functional module through the peripheral monitoring program, so that when the device fails, it can quickly Determine and isolate the faulty module and start the automatic recovery process, thereby ensuring the safety and reliability of the bay layer equipment operation, reducing the workload of on-site maintenance of the bay layer equipment, and saving the operation and maintenance funds of the smart substation.

The object of the present invention is to adopt following technical scheme to realize:

The invention provides a substation bay layer equipment with self-recovery function, the bay layer equipment is respectively connected with the station control layer equipment and the process layer equipment, the improvement is that the equipment includes a monitoring self-inspection area, and Communication function modules and redundant resource modules, the monitoring and self-inspection area, function modules and redundant resource modules are all integrated on the programmable controller; the monitoring and self-inspection area is controlled by the CPU of the programmable controller.

The monitoring and self-inspection area is jointly implemented by software and hardware running on the main CPU, and the functional modules and redundant resource modules can be implemented by software or hardware.

Wherein, the monitoring and self-inspection area is used to monitor the operating status of each functional module during normal operation, upload, download and maintain the parameters, fixed values and configuration files of the bay layer equipment, and output the normal operation signal of the bay layer equipment;

The functional modules are used for measurement, control, protection, communication and monitoring;

The redundant resource module is used as a backup module of the normal function module, and replaces the abnormal function module when the function module is abnormal (called by software).

Wherein, the monitoring and self-checking area includes a peripheral monitoring module, a trigger backup circuit, an alarm counter and an alarm control circuit; the peripheral monitoring module is respectively connected with the alarm counter, the alarm control circuit and the memory of the trigger backup circuit; the alarm counter and The station control layer network communication module connection of the function module.

Wherein, the functional modules include a station control layer network communication module, a logic judgment module, a calculation module, an information storage module, an acquisition module, a control module and a process layer network communication module; The judgment module, calculation module, information storage module and control module are connected; the acquisition module is connected with the calculation module; the process layer network communication module is respectively connected with the information storage module, acquisition module and control module.

Wherein, the peripheral monitoring module is connected with the functional module; the station control layer network communication module, logical judgment module, calculation module, information storage module, acquisition module, control module and process layer network communication module are all monitored by the peripheral monitoring module. It will run under the control mode and be scheduled by the peripheral monitoring module.

The present invention provides a method for realizing a substation bay layer device with a self-recovery function based on another purpose. The improvement is that the method includes the following steps:

1) Judging whether the functional module of the bay layer equipment is faulty, the peripheral monitoring module judges whether the functional module is faulty and the severity of the fault according to the status signal output by the functional module, and automatically identifies whether the fault affects the normal operation of the function; The severity is divided into four states: slight (does not affect the realization of the function), moderate (affects the partial realization of the function), severe (affects the overall realization of the function) and paralyzed (the function cannot respond at all);

2) When the severity of the fault is minor, the self-recovery function is not activated, and only an alarm signal is output; otherwise, the bay layer device needs to reconfigure the functional modules inside the bay layer device according to the severity of the faulty module to form a new function configuration file;

3) Stop the faulty module and cut it off from other modules (other modules include modules other than the faulty functional module, if the logic judgment module fails, other modules refer to the station control layer network communication module, calculation module, and information storage module , acquisition module, control module, or one or more modules in the process layer network communication module), the data and communication links between the said bay layer equipment enter the self-recovery state;

4) Determine whether the faulty module stops running and cut off all data and communication links with other modules;

5) Start the redundant resource module to replace the faulty module according to the configuration file, judge the running status of all modules inside the device, and operate the alarm counter according to the judgment result;

6) Determine whether the redundant resource module is started successfully, and whether its data and communication with other modules are restored;

7) Determine whether all functional modules inside the bay layer equipment are operating normally, and whether the overall operation of the bay layer equipment is normal;

8) End the self-recovery state.

Wherein, in the step 1), if the functional module fails, proceed to step 2); otherwise, continue to monitor whether the functional module of the bay layer device is faulty.

Wherein, in the step 4), if the operation is completely stopped, the backup circuit is triggered, and the redundant resource module is started, and the bay layer device enters the self-recovery process, and at the same time, the alarm counter of the bay layer device is triggered; otherwise, the fault-related module is re-judged Whether to stop running.

Wherein, in step 6), if the redundant resource module starts and operates normally, clear the alarm counter and proceed to step 7); otherwise, go to step 5), and increase the alarm counter of the interval layer device by 1 at the same time.

Wherein, in step 7), if the functional modules of the bay layer equipment are operating normally, restore the normal operation state of the bay layer equipment, and proceed to step 8); otherwise, send an alarm to the superior system and request to dispose of the faulty bay layer equipment.

Compared with prior art, the beneficial effect that the present invention reaches is:

The present invention provides an intelligent substation bay layer equipment with self-recovery function and its realization method. The functional modules of the bay layer equipment are designed. Each functional module has configuration and interface functions, and can be put in, out and switched in real time. During operation, the function module can quickly and dynamically restore the function of the failed module in the bay layer equipment, so that when the equipment fails, its basic functions can be guaranteed to meet the minimum safety operation requirements of the system. The present invention provides a new implementation method for the function design of the bay layer equipment, which can quickly and accurately restore the function of the bay layer equipment that has failed, and avoid the safety risk of the bay layer equipment operation; at the same time, it reduces the work of the bay layer equipment It improves the hardware integration and reliability of the bay layer equipment, and reduces the design and maintenance costs of the bay layer equipment.

Description of drawings

Fig. 1 is the structural block diagram of the substation bay layer equipment with self-recovery function provided by the present invention;

Fig. 2 is a flow chart of the implementation method of the substation bay layer equipment with self-recovery function provided by the present invention.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

The structural block diagram of the substation bay layer equipment with self-recovery function provided by the present invention is shown in Figure 1. The bay layer equipment is connected to the station control layer equipment and the process layer equipment respectively, and the equipment includes a monitoring self-inspection area and communication devices The functional module and the redundant resource module, the monitoring self-inspection area, the functional module and the redundant resource module are all integrated on the programmable controller; the monitoring self-inspection area is controlled by the CPU of the programmable controller.

The monitoring and self-checking area includes a peripheral monitoring module, a trigger backup circuit, an alarm counter and an alarm control circuit; the peripheral monitoring module is respectively connected with the alarm counter, the alarm control circuit and the memory of the trigger backup circuit; the station between the alarm counter and the functional module Control layer network communication module connection. The alarm control circuit is realized by the alarm controller. The trigger backup circuit includes memory.

The functional modules include a station control layer network communication module, a logic judgment module, a calculation module, an information storage module, an acquisition module, a control module and a process layer network communication module; The module, the information storage module and the control module are connected; the acquisition module is connected with the calculation module; the process layer network communication module is respectively connected with the information storage module, the acquisition module and the control module. Divide the function of the compartment layer into multiple functional modules, each functional module operates independently, cooperates with each other through internal information transmission, or uses public data storage space to cooperate.

The peripheral monitoring module is connected with the functional modules; the station control layer network communication module, logical judgment module, calculation module, information storage module, acquisition module, control module and process layer network communication module are all running under the monitoring of the peripheral monitoring module , is scheduled to run by the peripheral monitoring module. When the internal function module of the bay layer equipment fails, the peripheral monitoring module first judges the fault type, fault range and fault level according to the operating status information of the functional module, runs the relevant processing program according to the judgment result, triggers the memory of the backup circuit, and enables redundant resources The module repairs the function of the device; at the same time, the monitoring program triggers the system alarm counter to record the number of activated redundant resource modules and whether the status is normal. Once the internal redundant modules of the device are all activated and the repair fails, it will send a failure notification to the upper system signal to request the superior system to process and replace the failed bay layer equipment.

The rapidity, reliability and economy of the self-recovery process of the bay layer equipment under the fault state of the functional module are the key to the realization of the intelligent substation bay layer equipment with self-recovery function. The logic processing process of most of the functions of the bay layer equipment is fixed, so some logic modules with simple logic process and high reusability can be solidified with large-scale field programmable logic devices, which is convenient to call and simplifies the design difficulty of bay layer equipment , which ensures the reliability and accuracy of the application function realization during the self-recovery process, and improves the self-recovery speed of the bay layer equipment.

The flow chart of the implementation method of the substation bay layer equipment with self-recovery function provided by the present invention is shown in Figure 2, including the following steps:

1) Judging whether the functional module of the bay layer equipment is faulty, the peripheral monitoring module judges whether the functional module is faulty and the severity of the fault according to the status signal output by the functional module, and automatically identifies whether the fault affects the normal operation of the function; The severity is divided into four states: slight (does not affect the realization of the function), moderate (affects the partial realization of the function), severe (affects the overall realization of the function) and paralyzed (the function cannot respond at all); if the function module fails, Then go to step 2); otherwise, continue to monitor whether there is a fault in the functional module of the bay layer equipment.

2) When the severity of the fault is minor, the self-recovery function is not activated, and only an alarm signal is output; otherwise, the bay layer device needs to reconfigure the functional modules inside the bay layer device according to the severity of the faulty module to form a new function configuration file;

3) Stop the faulty module and cut it off from other modules (other modules include modules other than the faulty functional module, if the logic judgment module fails, other modules refer to the station control layer network communication module, calculation module, and information storage module , acquisition module, control module, or one or more modules in the process layer network communication module), the data and communication links between the said bay layer equipment enter the self-recovery state;

4) Determine whether the faulty module stops running and cut off all data and communication with other modules: if it stops running completely, the backup circuit will be triggered, the redundant resource module will be started, and the bay layer equipment will enter the self-recovery process, and at the same time trigger Alarm counter; otherwise, re-judgment whether the module related to the fault stops running.

5) Start the redundant resource module to replace the faulty module according to the configuration file, judge the running status of all modules inside the device, and operate the alarm counter according to the judgment result;

6) Determine whether the redundant resource module is started successfully, and whether its data and communication with other modules are restored: if the redundant resource module starts and operates normally, clear the alarm counter and proceed to step 7); otherwise, go to step 5) , and the alarm counter of the device at the interval layer is incremented by 1.

7) Determine whether all functional modules inside the bay layer equipment are operating normally, and whether the overall operation of the bay layer equipment is normal: if the functional modules of the bay layer equipment are operating normally, restore the normal operation status of the bay layer equipment, and proceed to step 8); otherwise, report to the superior System alarm, requesting to deal with faulty bay layer equipment.

8) End the self-recovery state.

Example

Taking the 110 (66) kV transformer protection measurement and control device as an example, the settings of the device modules are shown in Table 1:

Table 1 Module Settings

The hardware design of the device adopts a back plug-in structure, and is equipped with plug-ins such as power board, CPU board, network communication interface board, input board, and output board. Its software design includes hardware drivers, system-level platforms, application interfaces, and application functions. part.

The operating system of the device uses the embedded real-time system vxWorks, and uses the interrupt mechanism and task mechanism to coordinate and process different functions inside the device.

During normal operation, the device collects the state parameters output by each functional module, and judges the operating state of the functional modules through the software running on the CPU board. When a functional module fails, the severity of the failure is judged by software, and the self-recovery process of the device is completed according to the flow chart in Figure 2.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims (7)

1. A substation bay layer equipment with self-recovery function, said bay layer equipment is connected with station control layer equipment and process layer equipment respectively, it is characterized in that said bay layer equipment includes a monitoring self-checking area, and communicates with it Function modules and redundant resource modules, the monitoring self-inspection area, functional modules and redundant resource modules are all integrated on the programmable controller; the monitoring self-inspection area is controlled by the CPU of the programmable controller; The monitoring and self-inspection area is used to monitor the operating status of the functional modules during normal operation, upload, download and maintain the parameters, fixed values and configuration files of the bay layer equipment, and output the normal operation signal of the bay layer equipment; The functional modules are used for measurement, control, protection, communication and monitoring; The redundant resource module is used as a backup module of the normal function module, and replaces the abnormal function module when the function module is abnormal; The monitoring and self-checking area includes a peripheral monitoring module, a trigger backup circuit, an alarm counter and an alarm control circuit; the peripheral monitoring module is respectively connected to the alarm counter, the alarm control circuit and the memory of the trigger backup circuit; the alarm counter is connected to the functional module The station control layer network communication module connection; The functional modules include a station control layer network communication module, a logic judgment module, a calculation module, an information storage module, an acquisition module, a control module and a process layer network communication module; the station control layer network communication module is connected with the logic judgment module respectively , the calculation module, the information storage module and the control module are connected; the collection module is connected with the calculation module; the process layer network communication module is respectively connected with the information storage module, the collection module and the control module. 2. substation bay layer equipment as claimed in claim 1, is characterized in that, peripheral monitoring module is connected with described functional module; Described station control layer network communication module, logical judgment module, calculation module, information storage module, acquisition module The control module, the process layer network communication module all run under the monitoring of the peripheral monitoring module, and are scheduled to run by the peripheral monitoring module. 3. a method for realizing the substation bay layer equipment with self-recovery function as claimed in claim 1, characterized in that, the method comprises the steps of: 1) Judging whether the functional module of the bay layer equipment is faulty, the peripheral monitoring module judges whether the functional module is faulty and the severity of the fault according to the status signal output by the functional module, and automatically identifies whether the fault affects the normal operation of the function; Severity is divided into four states: mild, moderate, severe and paralyzed; 2) When the severity of the fault is slight, the self-recovery function is not activated, and only an alarm signal is output; otherwise, the bay layer device needs to reconfigure the functional modules inside the bay layer device according to the severity of the faulty module to form a new function configuration file; 3) stop the faulty module and cut off the data and communication links between it and other modules, and the said bay layer equipment enters the self-recovery state; 4) Determine whether the faulty module stops running and cut off all data and communication links with other modules; 5) Start the redundant resource module to replace the faulty module according to the configuration file, judge the operating status of all modules inside the device, and operate the alarm counter according to the judgment result; 6) judging whether the redundant resource module starts successfully, and whether its data and communication with other modules are restored; 7) Judging whether all functional modules inside the bay layer equipment are operating normally, and whether the overall operation of the bay layer equipment is normal; 8) End the self-recovery state. 4. the substation bay layer equipment implementation method as claimed in claim 3, is characterized in that, in described step 1), if functional module breaks down, then carry out step 2); Otherwise continue to monitor whether the bay layer equipment functional module has a fault occur. 5. the substation bay layer equipment implementation method as claimed in claim 3, is characterized in that, in described step 4), if stop running completely then trigger backup circuit, start redundant resource module, described bay layer equipment enters self-recovery At the same time, trigger the alarm counter of the equipment at the bay layer; otherwise, re-judge whether the module related to the fault stops running. 6. the substation bay layer equipment implementation method as claimed in claim 3, is characterized in that, in described step 6), if redundant resource module starts and runs normally, clears alarm counter counting, and carries out step 7); Otherwise turn to Enter step 5), and increase the alarm counter of the equipment at the bay layer by 1 at the same time. 7. the implementation method of substation bay layer equipment as claimed in claim 3, is characterized in that, in described step 7), if the functional module of bay layer equipment all runs normally, restores the normal operating state of bay layer equipment, carries out step 8 ); otherwise, send an alarm to the superior system and request to dispose of the faulty compartment layer equipment.