Fault tolerance testing method for simulation system of digital transformer substation

A substation simulation and system fault-tolerant technology, which is applied in the field of fault-tolerant testing of digital substation simulation systems, can solve problems such as failure to meet digital substation digital station equipment inspection and monitoring requirements, and lack of fault-tolerant testing methods to achieve efficient and fast processing and stable operation Effect

Active Publication Date: 2013-07-03
深圳市康必达中创科技有限公司
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no fault-tolerant test method for the performance of secondary equipment such as relay protection in digital substations in operation in China, which cannot meet the inspection and monitoring requirements of digital substation digital total station equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Due to the requirements of the IEC 61850-9-1 and IEC 61850-9-2 message standards of the substation automation system of the network communication platform, according to the IEC61850-9-1 and IEC 61850-9-2 standards, each byte in the message has strict The canonical definition for :

[0030] 1. The messages sent by the merging unit to the protection device must be sent at equal intervals. If the sampling rate is 100 points per cycle, the interval between the two messages before and after is 200 microseconds. During the fault-tolerant test, the interval between the two messages before and after can be set to unequal time to observe the response of the device under test.

[0031] 2. The voltage and current values ​​in each frame of message sent should not have abnormal conditions. During the fault tolerance test, some abnormal voltage and current values ​​are intentionally generated to observe the response of the device under test.

[0032] 3. The sampling counter SV must...

Embodiment 2

[0035] The fault-tolerant test analysis of object-oriented substation general event GOOSE message includes the following aspects:

[0036] 1. When a new event occurs, whether the four transmission times T0, T1, T2 and T3 meet the standard. During the fault tolerance test, the time of T0, T1, T2 and T3 is set wrongly to observe the reaction of the device under test.

[0037] 2. Whether the value changes of the state number StNum and the sequence number SqNum are correct. When it is a new hop message, the state number StNum remains unchanged, and the sequence number SqNum should increase continuously until it reaches the maximum value and then becomes 1. If the sequence SqNum is not continuous, Then there is frame loss; when there is a new event, the state number StNum increases continuously, the sequence SqNum value is 0, and then becomes 1 after the state number StNum reaches the maximum value, if the state number StNum is not continuous, then there is frame loss; but if the d...

Embodiment 3

[0039] For the object-oriented substation general event GOOSE communication interruption fault tolerance test, according to the minTime and maxTime values ​​​​configured in the SCD file, when the time interval between two frames of messages is greater than the sum of the maxTime value and minTime value 4 times, it is judged as communication Interrupt, during the fault tolerance test, the time interval between 2 frames of messages is greater than the sum of 4 times the maxTime value and the minTime value, in order to observe the response of the device under test.

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Abstract

The invention discloses a fault tolerance testing method for a simulation system of a digital transformer substation. The system is only controlled based on the digital substation and comprises a process layer, an interval layer and a transformer substation layer, wherein protection equipment, measurement control equipment and metering equipment are positioned in the interval layer; pieces of information between the interval layer and the process layer are interacted by a sampling value mapped by a specific communication service and a object-oriented transformer substation event to record a sampling value of the simulation system of the full-digital transformer and generic object-oriented substation event (GOOSE) message information, analyze and judge output information of the simulation system and the working performance of tested equipment in time, so that functions of recording digital faults, calibrating the current voltage waveform accuracy, adjusting the time standard and approval phases are realized; network analysis equipment can be used for recording a message of the whole network and analyzing an integrated Ethernet chip (IEC) 61850 protocol; and therefore, a whole processing and analyzing system can effectively and rapidly process a messages of the whole substation and is stable to operate.

Description

technical field [0001] The invention relates to the field of electric power control, in particular to a fault-tolerant testing method for a digital substation simulation system. Background technique [0002] Digital substation has the characteristics of information digitization, communication network, and information sharing standardization, and it can develop the basis for advanced applications, which is an important content of smart grid construction. Network communication instead of secondary cables is an important feature of digital substations. It is inevitable that the system will malfunction or refuse to operate due to faults in intelligent units or incorrect messages. Therefore, being able to simulate fault messages will be an important function of the simulation test system in the future. At present, there is no fault-tolerant test method for the performance of secondary equipment such as relay protection in digital substations in operation in China, which cannot me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY02E60/00Y04S10/16
Inventor 刘劲丁建义江峰林峰平廖明康张孝山
Owner 深圳市康必达中创科技有限公司
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