CN106771760A - A kind of distributed FA functional diagnosis method based on main website simulation - Google Patents

Abstract

The present invention relates to a distributed FA function diagnosis method based on master station simulation. Its technical characteristics include the following steps: Step 1. The master station selects the distributed FA object device as the target terminal, sets the fault type, and generates a corresponding fault type at the master station. The FA simulation results of the corresponding terminal equipment and the simulation data of the corresponding terminal equipment; step 2, the master station starts the distributed FA simulation test, and after packetizing the simulation data of the corresponding terminal equipment, sends the simulation data message to the target terminal, and the The target terminal recognizes the simulated data message and performs internal simulation calculation; step 3, the target terminal uploads the terminal simulation result to the master station, and performs a logical comparison with the master station simulation result. Based on the automatic simulation detection technology, the present invention realizes the one-button detection of the logic function of the feeder automation, solves the problem that the action logic verification and test of the distributed feeder automation require on-site synchronous incremental testing, and improves the stability and reliability of the feeder automation.

Description

A Distributed FA Function Diagnosis Method Based on Master Station Simulation

technical field

The invention belongs to the technical field of power distribution automation, in particular to a distributed FA function diagnosis method based on master station simulation.

Background technique

According to the State Grid Corporation of China's "Technical Standards for Acceptance of Distribution Automation Systems" and "Detailed Rules for the Practical Acceptance of Distribution Automation", distribution automation products need to go through factory acceptance test (FAT) and site acceptance test (SAT). ) and practical acceptance before it can be formally operated. In terms of fault handling performance testing of feeder automation, although there are four types of testing methods, they all have shortcomings and deficiencies: 1) The main station injection method, once proposed and applied, has realized the acceptance testing of major distribution automation projects across the country , provides an auxiliary tool for the fault detection and operation and maintenance of the distribution automation system, which greatly promotes the healthy development of China's distribution automation field, but does not consider the influence of the coordination and cooperation of the main station, communication, terminal and other links on the reliability of FA . 2) The secondary injection method uses a fault simulation device to add a fault current at the entrance of the secondary side FTU to simulate the actual fault, which not only requires power failure, but also requires time-consuming preparation work and manpower and material resources for testing, which is not conducive to large-scale Popularization and application; 3) The main station and secondary synchronous injection method, although make up for the deficiency of the main station injection method, but also bring the deficiency of the secondary injection method, need to cut off the power and consume manpower and material resources. 4) The laboratory simulation test method is applied to the field test. The consistency between the laboratory simulation test environment and the field situation is the difficulty and the key.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a distributed FA function diagnosis method based on master station simulation, which is reasonable in design, convenient and practical, low in operation cost, and can improve the stability and reliability of feeder automation.

The present invention solves its technical problem and realizes by taking the following technical solutions:

A method for diagnosing distributed FA functions based on master station simulation, comprising the following steps:

Step 1. The master station selects the distributed FA object device as the target terminal, sets the fault type, and generates the corresponding FA simulation results and the simulation data of the corresponding terminal equipment at the master station;

Step 2. The master station starts the distributed FA simulation test, packs the simulated data of the corresponding terminal equipment into packets, and sends the simulated data message to the target terminal. The target terminal recognizes the simulated data message and performs internal simulation calculate;

Step 3. The target terminal uploads the terminal simulation result to the master station, and performs a logical comparison with the master station simulation result.

Moreover, the fault types in step 1 include outgoing line faults, bus faults, load side faults, inter-station faults and terminal faults.

Moreover, the FA simulation result of step 1 includes simulation of fault occurrence, fault judgment, fault isolation, and fault recovery process.

Moreover, the corresponding terminal devices in step 1 include distributed FA target devices and their upstream and downstream terminal devices.

Moreover, the simulation data in step 1 includes the telemetry and telesignaling status data of the switches of the ring main unit corresponding to the distributed FA target device and its upstream and downstream terminal devices.

Moreover, the specific method of packetizing the simulated data of the corresponding terminal equipment in step 2 is: the simulated data of the corresponding terminal equipment is added with a time section mark and a function code representing the simulation application to package the message.

Moreover, the specific method of identifying the analog data message by the target terminal in step 2 and performing internal simulation calculations is: the target terminal identifies the analog data message as a test message, and blocks the circuit breaker tripping and closing relay outlet, and only performs internal simulation calculations. Simulation calculation.

Moreover, the terminal simulation result in step 3 includes simulation of fault occurrence, fault judgment, fault isolation and fault recovery process.

Moreover, the target terminal in step 3 uploads the terminal emulation result to the master station in the form of an xml file.

Advantage and positive effect of the present invention are:

1. The present invention simulates the actual fault occurrence, fault judgment, fault isolation, and fault recovery process through the analysis of the topology model of the power distribution network based on the DAS itself, the FA function module of the main station, the communication system, and the on-site automatic power distribution terminal. The station FA function module monitors and analyzes the whole process of fault handling, and finally realizes the distributed FA function detection. The present invention improves the function of the FA at the existing main station end, so that it has the simulation detection function for the distributed FA, and solves the problem that the current distributed FA is tested on the equipment side, and the main station side does not have the test capability .

2. The present invention will diagnose and verify the FA logic of distributed terminals as an acceptance tool for distribution network automation projects and a means for daily system testing and maintenance, and achieve low-cost "normalized" FA planned detection purposes through highly automated means .

3. Based on the topological relationship of the distribution network to be tested, the present invention selects the distributed FA object to set the fault type, and generates the FA result of the master station; at the same time, the master station simulates the signals of the object terminal and the upstream and downstream equipment, and telemeters and remotely detects the corresponding switches. The signal state sequence is downloaded to the terminal equipment of the distribution network to be tested, the target terminal receives the data to perform the simulation FA test, and returns the test result to the master station for logical comparison with the master station FA, thus realizing the distributed FA of the distribution terminal Logical diagnostic verification. Based on the automatic simulation detection technology, the present invention realizes the one-button detection of the logic function of feeder automation, and solves the problem that the action logic verification and test of distributed feeder automation require on-site synchronous incremental testing; by mining the potential risk points in the distributed FA plan, The present invention proposes a more complete backup plan measure to improve the stability and reliability of feeder automation.

Description of drawings

Fig. 1 is a flow chart of the method of the present invention.

detailed description

Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

The present invention provides a distributed FA function diagnosis method based on master station simulation, which generates FA simulation results through distributed FA simulation at the master station end; at the same time, the fault process and related data packets are sent to the target terminal, and the target terminal is After receiving the data, perform simulation calculations, and then feed the results back to the master station; the master station compares the distributed simulation results of the terminal and the master station for the distributed FA logic diagnosis and verification of the power distribution terminal.

A method for diagnosing distributed FA functions based on master station simulation, as shown in Figure 1, comprises the following steps:

Step 1. The master station selects the distributed FA object device as the target terminal, selects and sets the fault type according to various types such as outgoing line fault, bus fault, load side fault, inter-station fault and terminal fault, and the master station generates FA simulation results and corresponding terminals Simulated data for the device.

In this embodiment, the FA simulation results include fault occurrence, fault judgment, fault isolation, and simulation of a fault recovery process.

In this embodiment, the corresponding terminal devices include distributed FA target devices and their upstream and downstream terminal devices.

In this embodiment, the simulated data includes telemetry and telesignaling status data of switches of the ring main unit corresponding to the distributed FA target device and its upstream and downstream terminal devices.

Step 2. The master station starts the distributed FA simulation test, and adds the time section marks and representative The function code of the simulation application performs message grouping, and sends the simulated data message to the target terminal. The distributed FA object device should recognize the simulated data message as a test message, block the circuit breaker tripping and closing relay outlet, and only perform internal simulation calculation;

Step 3. The target terminal generates an FA file of the terminal simulation results including fault occurrence, fault judgment, fault isolation, and fault recovery process simulation, and uploads it to the master station in the form of an xml file for logical comparison with the simulation results of the master station right.

It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, so the present invention includes and is not limited to the embodiments described in the specific implementation, and those skilled in the art according to the technology of the present invention Other implementations derived from the scheme also belong to the protection scope of the present invention.

Claims (9)

1. A distributed FA function diagnosis method based on master station simulation, characterized in that: comprise the following steps: Step 1. The master station selects the distributed FA object device as the target terminal, sets the fault type, and generates the corresponding FA simulation results and the simulation data of the corresponding terminal equipment at the master station; Step 2. The master station starts the distributed FA simulation test, packs the simulated data of the corresponding terminal equipment into packets, and sends the simulated data message to the target terminal. The target terminal recognizes the simulated data message and performs internal simulation calculate; Step 3. The target terminal uploads the terminal simulation result to the master station, and performs a logical comparison with the master station simulation result. 2. A method for diagnosing distributed FA functions based on master station simulation according to claim 1, wherein the fault types in step 1 include outgoing line faults, bus faults, load side faults, inter-station faults, and terminal faults. Fault. 3. a kind of distributed FA function diagnosis method based on master station simulation according to claim 1 or 2, is characterized in that: the FA simulation result of described step 1 comprises fault generation, fault judgment, fault isolation, and fault recovery Simulation of the process. 4. A distributed FA function diagnosis method based on master station simulation according to claim 1 or 2, characterized in that: the corresponding terminal devices in step 1 include distributed FA target devices and their upstream and downstream terminal devices. 5. A method for diagnosing distributed FA functions based on master station simulation according to claim 1 or 2, characterized in that: the simulated data in step 1 includes distributed FA target devices and their upstream and downstream terminal devices Telemetry and telesignaling status data of each switch of the ring main unit. 6. A kind of distributed FA function diagnosis method based on master station simulation according to claim 1 or 2, it is characterized in that: the specific method of carrying out message grouping with the simulated data of corresponding terminal equipment in described step 2 is : the simulation data of the corresponding terminal equipment is added with a time section mark and a function code representing a simulation application for message grouping. 7. A kind of distributed FA function diagnosis method based on master station simulation according to claim 1 or 2, characterized in that: the specific method of identifying the simulation data message by the target terminal and performing internal simulation calculation in the step 2 It is: the target terminal recognizes the analog data message as a test message, and blocks the circuit breaker tripping and closing relay outlet, and only performs internal simulation calculations. 8. A kind of distributed FA function diagnosis method based on master station simulation according to claim 1 or 2, characterized in that: the terminal simulation results in step 3 include fault occurrence, fault judgment, fault isolation and fault recovery process simulation. 9. A distributed FA function diagnosis method based on master station simulation according to claim 1 or 2, characterized in that: the target terminal in step 3 uploads the terminal simulation result to the master station in the form of an xml file.