CN111458586A - Batch synchronous detection method and system for multi-interval in-situ line protection device of intelligent substation - Google Patents

Abstract

The invention discloses a method and system for batch synchronous detection of multi-interval on-site line protection devices in smart substations. The method includes building a test environment, connecting the on-site line protection devices in each interval with the batch synchronous detection system respectively, and according to the following steps: The preset model library and rule library create an execution use case template library, and the batch synchronous detection system executes sequentially according to the preset content of the execution use case in the execution use case template library, simulating the single-phase ground fault and For phase-to-phase short-circuit faults, the closed-loop control method is used to simultaneously analyze and determine the faults of the localized line protection devices at different intervals to obtain the corresponding detection results, and summarize and generate a detection report. The invention can realize the batch and same-frequency automatic maintenance test of the multi-interval on-site line protection device, which not only improves the automatic detection efficiency, but also can truly simulate the on-site operation environment and ensure the safe and reliable operation of the power grid.

Description

Batch synchronization detection method and system for multi-interval localized line protection devices in smart substations

technical field

The invention relates to a detection technology of an in-situ line protection device of a smart substation, in particular to a batch synchronous detection method and system of a multi-interval in-situ line protection device of a smart substation.

Background technique

Since the State Grid Corporation of China started the pilot construction of smart substations in 2009, up to now, more than 5,000 smart substations have been built in China, including first-generation smart substations and second-generation smart substations. Due to the high degree of system integration and reasonable structural layout, smart substations have achieved certain results in terms of economy, energy conservation and environmental protection. However, in practical application, many problems have also been exposed. Especially in the operation and maintenance of smart substations, the heavy maintenance workload and high maintenance costs greatly restrict the development of smart substations. In order to achieve the goals of high reliability of grid power supply and efficient operation and inspection of substations, State Grid Corporation of China started the pilot construction of smart substations with local protection in 2018. In-situ protection The core control equipment of the smart substation is in-situ protection, that is, to realize the localization of secondary protection, modularization of protection functions, and intelligent control of the whole station. In-situ protection device is one of the key components to protect power grid security. How to effectively detect, monitor and manage a large number of secondary in-situ protection devices is a key issue that needs to be solved urgently to protect the safe and stable operation of smart substations.

For the localized line protection with voltage levels of 220kv and above, the sampling data is analog sampling, and the line interval is large. However, in terms of its maintenance and debugging, there are the following problems: 1. The localized line protection device has no liquid crystal display structure, and adopts the traditional relay system. The manual detection mode of the tester + management machine is used for the maintenance and debugging of related functions. There are many types of test equipment and tools, the operation is cumbersome, and the degree of automation is low; ② The lines with voltage levels of 220kv and above have many branches, and the line protection adopts double sets of configuration , resulting in a large number of localized line protection devices, and it is inefficient to test one set and one set separately, which is not conducive to on-site operation; ③ There is an interlocking relationship such as failure and jumping between the line protection multi-bay operation and the busbar protection, and the single-bay line The protection test cannot perform the overall maintenance verification on the mutual influence relationship of multiple line intervals and the cooperation relationship with the busbar protection, and cannot truly display the actual operating conditions on site.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention: Aiming at the problems existing in the maintenance and debugging of the multi-interval on-site line protection device, a method and system for batch synchronization detection of the multi-interval on-site line protection device in a smart substation are provided. The batch and same-frequency automatic maintenance test of the interval localized line protection device not only improves the automatic detection efficiency, but also simulates the on-site operating environment, ensuring the safe and reliable operation of the power grid.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A method for batch synchronous detection of multi-interval on-site line protection devices in a smart substation, the implementation steps include:

1) Build a test environment, connect the localized line protection devices of each interval with the batch synchronous detection system, and the localized line protection devices of each interval use an independent data source, and the batch synchronous detection system includes the host computer and A plurality of integrated electronic information output control devices, the integrated electronic information output control device includes an open-output interface, an open-input interface, an optical digital communication interface and a plurality of small signal output interfaces, the front ends of the small signal output interfaces are connected in series There is a power amplifier, and the power amplifier includes a voltage output module and a current output module;

2) Create an execution use case template library for batch synchronous detection based on the preset model library and rule library for batch synchronous detection based on predictive control theory. The model library includes the output of each integrated electronic information output control device, each The channel mapping between the MMS messages output by the localized line protection devices at intervals, the rule base includes the output of each integrated electronic information output control device, and the comparison rules of the localized line protection devices at each interval;

3) The batch synchronous detection system performs sequential execution according to the preset content of the execution use case in the execution use case template library, and simulates the single-phase ground fault and phase-to-phase short-circuit fault of the localized line protection device at each interval, and adopts a closed-loop control method at the same time. Perform fault analysis and judgment on localized line protection devices at different intervals and obtain corresponding detection results;

4) Summarize the test results of the localized line protection devices at each interval, and generate a test report.

Optionally, the output of each integrated electronic information output control device in the model library includes four categories of analog voltage and current, binary output position, binary input acquisition, and optical digital communication address, and is established by instantiation processing. Corresponding analog voltage and current instances, binary output location instances, binary input acquisition instances, and communication address instances. The MMS messages output by the localized line protection device at each interval include remote measurement, remote signaling, protection logic, and MMS. Communication IP is classified into four categories, and is instantiated to establish corresponding remote measurement instances, remote signaling instances, protection logic instances, communication IP instances, analog voltage and current instances, and output position instances of each integrated electronic information output control device. , A handshake mapping relationship is established among the instances of binary input data collection, communication address instances, and remote measurement instances, remote signaling instances, protection logic instances, and communication IP instances of the localized line protection device at each interval.

Optionally, the rule base includes: multi-interval localized line protection voltage sampling channel consistency rules, including voltage acquisition channels of localized line protection devices at various intervals and voltage output ports of each integrated electronic information output control device. The mapping between the channels, as well as the mapping between the voltage acquisition channel of the localized line protection device at each interval and the telemetry message sent to the upper computer; the consistency rule of the current sampling channel of the multi-interval localized line protection, including the Channel mapping between the current acquisition channel of the localized line protection device and the current output ports of each integrated electronic information output control device, as well as the current acquisition channel of the localized line protection device at each interval and the telemetry report sent to the host computer Mapping of the text; multi-interval localized line protection circuit breaker position sampling consistency rules, including the circuit breaker position acquisition channel of each interval localized line protection device and the output port of each integrated electronic information output control device. The mapping between the channels, as well as the mapping between the circuit breaker position acquisition channel of the localized line protection device at each interval and the remote signaling message sent to the upper computer; the sampling consistency rule of the tripping outlet of the multi-interval localized line protection, including each The channel mapping between the trip outlet of the localized line protection device of the interval and the binary input port of each integrated electronic information output control device, and the tripping outlet of the localized line protection device of each interval and the upper computer Mapping of protection action logic.

Optionally, in step 3), when performing fault analysis and judgment on the localized line protection devices of different intervals at the same time to obtain corresponding detection results, the processing steps for the localized line protection devices of a certain interval i include: firstly judging the Whether the localized line protection device of the interval i successfully identifies the single-phase ground fault and the interphase short-circuit fault, if it cannot successfully identify the single-phase grounding fault and the interphase short-circuit fault, it is determined that the localized line protection device of this interval is in the abnormal state Si_N1 and Record the abnormal content, otherwise judge whether the fault phase, trip exit, and operation time of the localized line protection device of the interval i are correct. Abnormal content, otherwise it is determined that the localized line protection device of this interval i is in the normal state Si_N3, so as to obtain the test result of the localized line protection device of this interval i.

Optionally, step 4) further includes the step of performing defect elimination processing for the localized line protection device in an abnormal state.

In addition, the present invention also provides a detection system for applying the aforementioned method for batch synchronous detection of multi-interval localized line protection devices in smart substations, comprising a host computer and a plurality of integrated electronic information output control devices, the integrated electronic information output control The device includes an open-output interface, an open-input interface, an optical digital communication interface and a plurality of small signal output interfaces. The front end of the small signal output interface is connected in series with a power amplifier, and the power amplifier includes a voltage output module and a current output module. .

Optionally, the integrated electronic information output control device includes a core control unit, a small signal output unit, an optical digital communication unit, a binary output unit, an binary input unit and a power supply unit, and the core control unit is respectively connected with the small signal output unit. unit, optical digital communication unit, binary output unit, binary input unit, the output end of the power supply unit is respectively connected with the core control unit, small signal output unit, optical digital communication unit, binary output unit, binary input unit connected, the small-signal output unit has a plurality of small-signal output interfaces.

Optionally, the core control unit includes a D/A module, an FPGA module, a control module, and a communication module that are connected in sequence, the output end of the D/A module is connected to the small signal output unit, and the output end of the FPGA module is connected. They are respectively connected with the optical digital communication unit, the binary output unit and the binary input unit.

Optionally, the core control unit is integrated on the mother circuit board, and the small signal output unit, optical digital communication unit, binary output unit, binary input unit, and power supply unit are respectively inserted and installed on the mother circuit board. on different sub-boards.

Optionally, the control module includes an ARM processor and a DSP processor that are connected to each other, wherein the ARM processor is connected to the FPGA module, and the DSP processor is connected to the communication module.

Compared with the prior art, the present invention has the following advantages: the problem that the multi-interval localized line protection device of the intelligent substation cannot realize batch automatic detection is solved by the method of cascading synchronous control and independent same-frequency model prediction. The one-key automatic test efficiency of the line protection device can be greatly improved, and the unstable factors affecting the safe operation of the intelligent substation can be eliminated. The real simulation of the on-site operating environment ensures the safe and reliable operation of the power grid.

Description of drawings

FIG. 1 is a basic flowchart of a method according to an embodiment of the present invention.

FIG. 2 is a detailed flowchart of a method according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of the construction of a model library and a rule library in an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a detection system in an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of an integrated electronic information output control device in an embodiment of the present invention.

Detailed ways

The method and system for batch synchronous detection of multi-interval localized line protection devices in smart substations of the present invention will be further described in detail below by taking the batch synchronous detection of 4-interval localized line protection devices as an example. Undoubtedly, the method and system for batch synchronization detection of multi-interval localized line protection devices in smart substations of the present invention are not limited to being applied to batch synchronization detection of four-interval localized line protection devices.

As shown in FIG. 1 and FIG. 2 , the implementation steps of the batch synchronous detection method for multi-interval localized line protection devices in smart substations in this embodiment include:

1) Build a test environment, connect the localized line protection devices at each interval with the batch synchronous detection system, and use independent data sources for the localized line protection devices in each interval. The batch synchronous detection system includes the host computer 1 and multiple An integrated electronic information output control device 2, the integrated electronic information output control device 2 includes an open-output interface, an open-input interface, an optical digital communication interface and a plurality of small signal output interfaces, and the front end of the small signal output interface is connected in series with a power amplifier 3. The power amplifier 3 includes a voltage output module and a current output module;

2) Create an execution use case template library for batch synchronous detection based on the preset model library and rule library for batch synchronous detection based on predictive control theory. The model library includes the output of each integrated electronic information output control device 2, and the interval The channel mapping between the MMS messages output by the localized line protection device, the rule base includes the output of each integrated electronic information output control device 2, and the comparison rules of the localized line protection device at each interval;

3) The batch synchronous detection system executes sequentially according to the preset content of the execution use case in the execution use case template library, simulates the single-phase ground fault and phase-to-phase short-circuit fault of the localized line protection device at each interval, and adopts the closed-loop control method to simultaneously detect different Interval localized line protection devices carry out fault analysis and judgment and obtain corresponding detection results;

4) Summarize the test results of the localized line protection devices at each interval, and generate a test report.

The batch synchronous detection system includes a host computer 1 and multiple integrated electronic information output control devices 2. Multiple integrated electronic information output control devices 2 can realize the synchronous output of multiple devices through cascade connection, and realize multiple groups of analog, switch and optical digital. control of the signal. The 0-10V AC voltage output signal is used to drive the output of 6 channels of voltage and 6 channels of current power amplifiers to ensure independent control of analog sampling data for localized line protection at different intervals. The analog voltage and current signals and switching signals are physically connected to different intervals in a point-to-point mode, and the optical digital communication interface is connected to the IEC61850 communication interface of different intervals through the network exchange communication principle to realize the information exchange of MMS messages. The optical digital communication interface of the integrated electronic information output control device 2 is respectively connected with the IEC61850 communication ports of the localized line protection at different intervals, and the actual sampling of the localized line protection device at different intervals is actively obtained through the MMS client in the form of model calling Data, circuit breaker position collection and protection-related event reports, etc., actively modify the protection action settings and pressure plates of localized line protection devices at different intervals in the data preset mode, and synchronously control the output and synchronously control the closed loop of control detection The test mode realizes automatic detection of the functions and performances related to the protection logic of the multi-interval localized line protection. The localized line protection device of each bay is independently equipped with a set of power amplifiers 3, and the voltage and current output channels are physically connected to the localized line protection device in a point-to-point mode, and the entire system hardware is implemented in a one-to-many mode cascade control. The output of the power amplifier corresponding to each interval is independently controlled, and with the assistance of the clock synchronization signal, the output of the power amplifier of the hardware system can be maximized, and the analog sampling signal of the localized line protection device in all intervals of the smart substation can be output synchronously. Each bay localized line protection device is equipped with 8 independent binary output contacts and 8 binary input contacts. Collect and subscribe the location of the three-phase tripping outlet and reclosing outlet of the localized line protection device, etc. The digital channel of the synchronous automatic detection system is physically connected with the localized line protection devices at different intervals in a point-to-point mode. The whole system hardware is controlled by one-to-many mode cascade control to independently control the digital output boards corresponding to each interval. Card output and binary input board card trip position subscription, with the assistance of clock synchronization signal, the digital output channel and digital input channel of the hardware system can be maximized, and the smart substation can be completed in the form of model preset and result prediction The independent control and detection of the localized line protection devices of all bays finally realizes the automatic detection of all the protection logic functions and performances of the localized line protection of all bays.

In step 2) of this embodiment, a control detection model is constructed by the method of model prediction, so that the hardware structure of the automatic detection system can simultaneously perform batch synchronization function performance test on the localized line protection of multiple bays. The automatic detection system sets the fault model, and the control hardware system independently outputs relevant sampling signals for the localized line protection at different intervals. At the same time, the fault analysis and judgment are carried out for the localized line protection of different intervals, and finally the batch synchronous automatic detection of multi-interval localized line protection devices is realized under the one-to-many independent control strategy combined with the closed-loop automatic simulation test technology.

As shown in Figure 3, the output of each integrated electronic information output control device 2 in the model library includes four categories of analog voltage and current, binary output position, binary input acquisition, and optical digital communication address, and is established by instantiation processing. The corresponding analog voltage and current instances, binary output position instances, binary input acquisition instances, and communication address instances are listed. There are four categories of MMS communication IP, and they are instantiated to establish corresponding remote measurement instances, remote signaling instances, protection logic instances, and communication IP instances. A handshake mapping relationship is established between the location instance, the binary input data collection instance, the communication address instance, and the remote measurement instance, remote signaling instance, protection logic instance, and communication IP instance of the localized line protection device at each interval.

As shown in Figure 3, the rule base includes: multi-interval localized line protection voltage sampling channel consistency rules, including the voltage acquisition channels of the localized line protection devices at each interval and the voltage output of each integrated electronic information output control device 2 The channel mapping between ports, as well as the mapping between the voltage acquisition channel of the localized line protection device at each interval and the telemetry message sent to the upper computer 1; the consistency rule of the current sampling channel of the multi-interval localized line protection, including each Channel mapping between the current acquisition channel of the localized line protection device at intervals and the current output ports of each integrated electronic information output control device 2, as well as the current acquisition channel of the localized line protection device of each interval and the upper computer 1 mapping of telemetry messages; multi-interval localized line protection circuit breaker position sampling consistency rules, including the circuit breaker position acquisition channel of each interval localized line protection device and the opening of each integrated electronic information output control device 2 The channel mapping between the output ports, and the mapping between the circuit breaker position acquisition channel of the localized line protection device at each interval and the remote signaling message sent to the host computer 1; the sampling of the multi-interval localized line protection tripping outlet Consistency rules, including the channel mapping between the trip outlet of the localized line protection device of each bay and the binary input port of each integrated electronic information output control device 2, and the trip of the localized line protection device of each bay The mapping between the exit and the protection action logic sent to the upper computer 1.

As shown in Figure 2, in step 3), when fault analysis and judgment are performed simultaneously on the localized line protection devices at different intervals to obtain the corresponding detection results, the processing steps for the localized line protection devices at a certain interval i include: first Determine whether the localized line protection device of the interval i successfully identifies the single-phase ground fault and the phase-to-phase short-circuit fault. If the single-phase grounding fault and the phase-to-phase short-circuit fault cannot be successfully identified, the localized line protection device of the interval is judged to be in an abnormal state. Si_N1 and record the abnormal content, otherwise judge whether the fault phase, trip exit, and action time of the localized line protection device of this interval i are correct, if not, judge that the localized line protection device of this interval i is in an abnormal state Si_N2 And record the abnormal content, otherwise it is determined that the localized line protection device of this interval i is in the normal state Si_N3, so as to obtain the test result of the localized line protection device of this interval i. As shown in FIG. 2 , step 4) also includes the step of eliminating defects (represented as protection function correction in FIG. 3 ) for the localized line protection device in an abnormal state.

In this embodiment, the batch synchronization detection method of the multi-interval localized line protection device of the smart substation uses the model preset control theory to construct the relevant model library and rule library. For the construction of the model library, the one-to-many control strategy is adopted to automatically test the multi-interval localized line protection devices in batches. Measured objects, create different measured objects at different intervals. Class processing and instantiation processing of controlled objects include analog voltage and current, binary output position, binary input position, optical digital communication. Communication IP address, controlled object and controlled object use point-to-point mode for independent handshake mapping; for the construction of rule base, point-to-point mode is used to realize synchronous automatic detection of system hardware structure voltage, current output channel, binary output contact, binary input The contact channels are respectively mapped with the multi-interval localized line protection, and the rules for the digital comparison of the measured localized line protection by the hardware output of the automatic detection system are constructed. Finally, combined with the theory of model predictive control, a closed-loop control localized line protection device batch synchronous automatic detection is formed by constructing a control model library, setting judgment rules, presetting detection results in advance, and comprehensively researching and judging detection results; multi-interval localization The line protection device adopts an independent data source structure and control structure to ensure the uniqueness and independence of the fault types of the localized line protection at different intervals. The synchronous automatic detection system adopts an independent data source structure to independently and synchronously simulate single-phase ground faults and phase-to-phase short-circuit faults of localized line protection devices at different intervals. The event reports and trip exit locations of localized line protection at different intervals are obtained at the same time. According to the model predictive control theory, the consistent synchronization comparison method is used to confirm whether the automatic detection results of localized line protection at different intervals are correct. When the detection results of localized line protection at different intervals are consistent and meet the judgment expectations of the results, the relevant functions and performance of multi-interval localized line protection are consistent and correct; When the result is different from the expected result, the relevant functions and performance of the localized line protection of the interval are defective, and the defect content can be actively identified through specific different devices and contents; finally, the localized line protection function of different intervals is realized. Automatic detection of batch synchronization and performance. To sum up, the batch synchronous detection method of the multi-interval localized line protection device of the smart substation in this embodiment is mainly applied to the synchronous batch maintenance test of the multi-interval localized line protection of the smart substation and the batch of multiple localized line protections. Factory synchronization detection, which adopts the control theory of model prediction to realize the synchronization and automatic detection of multiple localized line protections. number. In this embodiment, the batch synchronous detection method of the multi-interval localized line protection device of the smart substation provides a new method for the automatic test and maintenance of the function and performance of the multi-interval localized line protection in batches. This technology can be applied to other types of The synchronous automatic detection of multiple sets of secondary protection devices has greatly improved the maintenance and maintenance efficiency of local intelligent substations, and ensured the safe and reliable operation of the power grid.

As shown in FIG. 4 , this embodiment also provides a detection system for the aforementioned method for batch synchronous detection of multi-interval on-site line protection devices in smart substations, including a host computer 1 and a plurality of integrated electronic information output control devices 2 . The electronic information output control device 2 includes an open-output interface, an open-input interface, an optical digital communication interface and a plurality of small signal output interfaces. The front end of the small signal output interface is connected in series with a power amplifier 3, and the power amplifier 3 includes a voltage output module and Current output module.

As shown in FIG. 5, the integrated electronic information output control device 2 includes a core control unit 21, a small signal output unit 22, an optical digital communication unit 23, an output unit 24, an input unit 25 and a power supply unit 26. The core control unit 21 are respectively connected with the small signal output unit 22, the optical digital communication unit 23, the digital output unit 24 and the digital input unit 25, and the output end of the power supply unit 26 is respectively connected with the core control unit 21, the small signal output unit 22, the optical digital communication unit The unit 23, the binary output unit 24, and the binary input unit 25 are connected, and the small signal output unit 22 has a plurality of small signal output interfaces.

In order to facilitate the installation and maintenance of the integrated electronic information output control device 2, in this embodiment, the core control unit 21 is integrated on the mother circuit board, the small signal output unit 22, the optical digital communication unit 23, the output unit 24, the input unit 25. The power supply units 26 are respectively inserted into different sub-circuit boards installed on the mother circuit board, so as to facilitate installation and maintenance and easy expansion.

The core control unit 21 is the core component of the entire test system. As shown in FIG. 5 , the core control unit 21 includes a D/A module 211, an FPGA module 212, a control module 213, a communication module 214, and a D/A module 211. The output end is connected to the small signal output unit 26 , and the output end of the FPGA module 212 is connected to the optical digital communication unit 22 , the binary output unit 23 , and the binary input unit 24 respectively.

In this embodiment, the control module 213 includes an ARM processor and a DSP processor that are connected to each other, wherein the ARM processor is connected to the FPGA module 212, and the DSP processor is connected to the communication module 214. Through the above method, it is possible to improve the relationship between testing and communication. The degree of parallelism is beneficial to improve the accuracy of the test. The control module 213 completes the calculation and processing of all data through ARM+DSP, and externally realizes the cascade control of multiple sets of hardware equipment (multi-interval localized line protection device) through the communication module 214 (Ethernet communication port or WIFI module) to realize output. Infinite expansion of the port; Internally, the MMS message communication of the optical digital communication unit 23, the output state control of the output unit 24 and the channel state acquisition of the input unit 25 are realized through the FPGA module 212, and the D/A module 211 is realized. The small signal output unit 22 is controlled to output a small signal of 0-10V AC voltage.

In this embodiment, the small signal output unit 22 has 12 channels of AC analog output channels, and one small signal output unit 22 can cooperate with one power amplifier 3 to realize 6 channels of 0~130V AC voltage and 6 channels of 0~30A current output. A set of test systems can be configured with no less than three small signal output units 22, and multiple sets of small signal output units 22 can be cascaded for synchronous output with the assistance of an external clock to realize the synchronous output of multiple power amplifiers 3, and ensure that the multi-interval operation is performed. The analog signal acquisition signal of the localized line protection device is independently output and controlled to realize the batch synchronous automatic detection of the localized line protection device.

In this embodiment, the optical digital communication unit 23 has 10 optical fiber communication interfaces, and has the switch forwarding function. It can communicate MMS messages with the multi-interval localized line protection device through the IEC61850 protocol under different IP addresses, and actively divide the interval. Obtain the protection action setting value, pressure plate, event report and other information of the localized line protection device, remotely modify the protection action setting value, pressure plate, etc. of the localized line protection device at each interval, and assist the automatic test system to complete the localized circuit Batch automatic detection of protective devices.

In this embodiment, the binary output unit 24 has 16-way switching contacts, and the binary output contacts adopt a relay structure, which can independently provide circuit breaker position information for multi-interval localized line protection in the mode of serially connecting a 220V DC power supply.

In this embodiment, the binary input unit 25 has 16 channels of binary contacts. The binary contacts adopt an optocoupler structure, and the closing and opening time does not exceed 100ns. The contact positions of the three-phase trip outlet and reclosing outlet of the line protection device are adjusted, and the auxiliary test system completes the batch automatic detection of the multi-interval localized line protection device.

In this embodiment, the power supply unit 26 is powered by an AC220 power supply, which converts the AC power supply into a 5V DC power supply, and the 5V DC power supply provides power supply for other units.

The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (10)

1. A batch synchronous detection method for intelligent substation multi-interval in-situ line protection devices is characterized by comprising the following implementation steps:

1) the method comprises the following steps of setting up a test environment, connecting each spaced in-situ line protection device with a batch synchronous detection system respectively, wherein each spaced in-situ line protection device adopts an independent data source, the batch synchronous detection system comprises an upper computer (1) and a plurality of integrated electronic information output control devices (2), each integrated electronic information output control device (2) comprises an output interface, an input interface, an optical digital communication interface and a plurality of small signal output interfaces, the front ends of the small signal output interfaces are connected in series with a power amplifier (3), and the power amplifier (3) comprises a voltage output module and a current output module;

2) creating an execution case template base for batch synchronous detection according to a model base and a rule base which are preset based on a predictive control theory and used for batch synchronous detection, wherein the model base comprises the output quantity of each comprehensive electronic information output control device (2) and channel mapping between MMS messages output by local line protection devices at intervals, and the rule base comprises the output quantity of each comprehensive electronic information output control device (2) and comparison rules of the local line protection devices at intervals;

3) the batch synchronous detection system sequentially executes according to preset contents of execution cases in an execution case template library, simulates single-phase earth faults and interphase short-circuit faults of the on-site line protection devices at all intervals, simultaneously analyzes and judges the faults of the on-site line protection devices at different intervals in a closed-loop control mode, and acquires corresponding detection results;

4) and summarizing the test results of the local line protection devices of each interval and generating a detection report.

2. The batch synchronous detection method for the multi-interval in-place line protection devices of the intelligent substation according to claim 1, wherein the output quantity of each integrated electronic information output control device (2) in the model library comprises four categories of analog quantity voltage and current, output quantity position, input quantity acquisition and optical digital communication address, the instantiated processing establishes a corresponding analog quantity voltage and current example, output quantity position example, input quantity acquisition example and communication address example, the MMS message output by each interval in-place line protection device comprises four categories of telemeasurement, telesignaling, protection logic and MMS communication IP, the instantiated processing establishes a corresponding telemeasurement example, telesignaling example, protection logic example and communication IP example, and the analog quantity voltage and current example of each integrated electronic information output control device (2), Handshake mapping relations are established among the output position instance, the input acquisition instance, the communication address instance, the remote measurement instance, the remote signaling instance, the protection logic instance and the communication IP instance of the local line protection devices of all intervals.

3. The method of claim 1, wherein the rule base comprises: the consistency rule of the multi-interval in-place line protection voltage sampling channels comprises channel mapping between the voltage acquisition channels of the in-place line protection devices at intervals and the voltage output ports of the integrated electronic information output control equipment (2), and mapping between the voltage acquisition channels of the in-place line protection devices at intervals and a telemetering message sent to an upper computer (1); the consistency rule of the multi-interval in-place line protection current sampling channels comprises channel mapping between the current acquisition channels of the in-place line protection devices at intervals and the current output ports of the integrated electronic information output control equipment (2), and mapping between the current acquisition channels of the in-place line protection devices at intervals and a telemetering message sent to an upper computer (1); the sampling consistency rule of the positions of the multi-interval on-site line protection circuit breakers comprises channel mapping between circuit breaker position acquisition channels of the on-site line protection devices at intervals and output ports of the comprehensive electronic information output control equipment (2), and mapping between the circuit breaker position acquisition channels of the on-site line protection devices at intervals and remote signaling messages sent to an upper computer (1); the sampling consistency rule of the multi-interval in-place line protection trip outlet comprises channel mapping between the trip outlet of each interval in-place line protection device and the input port of each comprehensive electronic information output control device (2), and mapping between the trip outlet of each interval in-place line protection device and the protection action logic of the upper computer (1).

4. The batch synchronous detection method for the multiple-interval in-place line protection devices of the intelligent substation according to claim 1, wherein when fault analysis, judgment and corresponding detection results are obtained for the in-place line protection devices at different intervals in step 3), the processing step for the in-place line protection device at a certain interval i comprises: firstly, judging whether the local line protection device of the interval i successfully identifies the single-phase earth fault and the interphase short-circuit fault, if the single-phase earth fault and the interphase short-circuit fault cannot be successfully identified, judging that the local line protection device of the interval i is in an abnormal state Si _ N1 and recording abnormal contents, otherwise judging that the fault phase, the trip exit and the action time of the local line protection device of the interval i are correct, if not, judging that the local line protection device of the interval i is in an abnormal state Si _ N2 and recording abnormal contents, otherwise, judging that the local line protection device of the interval i is in a normal state Si _ N3, thereby obtaining the test result of the local line protection device of the interval i.

5. The method for synchronously detecting the batch of the multi-interval in-place line protection devices of the intelligent substation according to claim 1, wherein the step 4) further comprises the step of eliminating the defect of the in-place line protection device with abnormal state.

6. A batch synchronous detection system for applying the multi-interval in-place line protection device batch synchronous detection method of the intelligent substation according to any one of claims 1 to 5 is characterized by comprising an upper computer (1) and a plurality of integrated electronic information output control devices (2), wherein each integrated electronic information output control device (2) comprises an output interface, an input interface, an optical digital communication interface and a plurality of small signal output interfaces, the front ends of the small signal output interfaces are connected with power amplifiers (3) in series, and each power amplifier (3) comprises a voltage output module and a current output module.

7. The batch synchronous detection system according to claim 6, wherein the integrated electronic information output control device (2) comprises a core control unit (21), a small signal output unit (22), an optical digital communication unit (23), an output unit (24), an input unit (25) and a power supply unit (26), the core control unit (21) is respectively connected with the small signal output unit (22), the optical digital communication unit (23), the output unit (24) and the input unit (25), the output end of the power supply unit (26) is respectively connected with the core control unit (21), the small signal output unit (22), the optical digital communication unit (23), the output unit (24) and the input unit (25), and the small signal output unit (22) is provided with a plurality of small signal output interfaces.

8. The batch synchronous detection system according to claim 7, wherein the core control unit (21) comprises a D/A module (211), an FPGA module (212), a control module (213) and a communication module (214) which are connected in sequence, an output end of the D/A module (211) is connected with the small signal output unit (26), and an output end of the FPGA module (212) is connected with the optical digital communication unit (22), the output unit (23) and the input unit (24) respectively.

9. The batch synchronous detection system according to claim 6, wherein the core control unit (21) is integrated on a mother circuit board, and the small signal output unit (22), the optical digital communication unit (23), the output unit (24), the input unit (25) and the power supply unit (26) are all respectively inserted and installed on different daughter circuit boards on the mother circuit board.

10. The batch synchronous detection system according to claim 6, wherein the control module (213) comprises an ARM processor and a DSP processor connected with each other, wherein the ARM processor is connected with the FPGA module (212), and the DSP processor is connected with the communication module (214).

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