Non-stop online transformation method and verification platform for intelligent substation measurement and control devices

Abstract

The present invention relates to a method and a verification platform for online transformation of a measurement and control device of an intelligent substation without power outage. The method comprises: when an old measurement and control device of the intelligent substation needs to be transformed into a new measurement and control device, obtaining an ICD model of the new measurement and control device; simulating the connection of the new measurement and control device to the intelligent substation according to the ICD model, and obtaining a new measurement and control configuration file of the new measurement and control device, a new simulation configuration file of a virtual device, and a new SCD configuration file of a mirrored background server; after verifying that three remote signals are correct, simulating the connection of the new measurement and control device to the intelligent substation on an offline intelligent substation measurement and control device online transformation verification platform without power outage, and obtaining configuration files corresponding to the new measurement and control device, the virtual device, and the mirrored background server; at the actual measurement and control device replacement site, connecting the verification platform to the station control layer network of the intelligent substation, and connecting the old measurement and control device to a measurement and control configuration verification module. The transformation time is short, the power supply is not affected, and the monitoring and protection of the power grid equipment is not lost.

Description

Technical Field

[0001] The present invention belongs to the technical field of power grid system automation, and in particular relates to a method and a verification platform for online transformation of a measurement and control device of an intelligent substation without power outage. Background Art

[0002] Smart grid construction is a grid development approach that adapts to the current and future social development of my country based on the regional distribution characteristics of energy distribution and load consumption in my country. It has strong adaptability to the input and output of various energy sources, especially large-scale wind power and solar power generation, and can achieve large-scale and high-efficiency allocation of energy resources. Smart substations are one of the core platforms for realizing energy conversion and control in the construction of a strong smart grid. Figure 1 The figure shows the framework of the integrated automation system of a smart substation. The station control layer includes the host / operation station, "five-protection" workstation, telecontrol gateway, and monitoring systems of dispatching master stations at all levels. The bay layer includes measurement and control devices, protection devices, and other non-electrical protection IEDs. The smart substation collects and monitors the status and data of primary substation equipment through merging units and smart terminals. Primary substation equipment includes conventional transformers, electronic transformers, transformers, circuit breakers / GIS / intelligent circuit breakers, disconnectors, grounding switches, lightning arresters, etc.

[0003] As the source acquisition device for the intelligent substation's integrated automation system, the measurement and control device is primarily used to measure and control the operating status and parameters of the equipment. Through secondary circuit access and control systems, it monitors equipment operating data in real time and makes adjustments and controls based on preset parameters to ensure the normal operation of the grid's primary equipment and the safe and stable operation of the equipment and system.

[0004] Because measurement and control devices have delicate internal components and complex wiring, they are prone to aging after long-term continuous operation, posing a threat to power grid security. Therefore, measurement and control devices must be regularly inspected and replaced after 12 to 15 years of operation, based on actual operating conditions.

[0005] At present, the transformation of measurement and control devices in smart substations generally adopts the transformation methods of interval power outage, voltage level power outage, and station-wide power outage. These three types of power outage transformation have different degrees of impact on reliable power supply, long transformation cycle, difficulty in coordinating power outage plans, impact on production and living electricity consumption, and risks to safe operation of the power grid caused by over-service equipment. Summary of the Invention

[0006] In order to remedy the defects of the prior art, the present invention provides a method and a verification platform for online transformation of a measurement and control device of an intelligent substation without power outage.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] In a first aspect, a method for online transformation of a smart substation measurement and control device without power outage is provided, which is applied to a verification platform for online transformation of a smart substation measurement and control device without power outage. The verification platform includes a smart station signal simulation module, a mirroring backend server, an offline networking switch, a virtual device, and a measurement and control configuration verification module. The method for online transformation of a smart substation measurement and control device without power outage includes:

[0009] When the old measurement and control device of the smart substation needs to be transformed into a new measurement and control device, the ICD model of the new measurement and control device is obtained;

[0010] According to the ICD model, the new measurement and control device is simulated to be connected to the smart substation, and a new measurement and control configuration file for the new measurement and control device, a new simulation configuration file for the virtual device, and a new SCD configuration file for the mirrored background server are obtained;

[0011] Verify the new telesignaling signal, new telemetry signal and new remote control signal after the new measurement and control device is simulated and connected through the mirror backend server and intelligent station signal simulation module;

[0012] After the new telesignaling signal, new telemetering signal, and new remote control signal are verified to be correct, the new measurement and control configuration file is downloaded to the new measurement and control equipment, and the new simulation configuration file and new SCD configuration file are copied to the debugging equipment of the smart substation;

[0013] After the online transformation verification platform for smart substation measurement and control devices is connected to the station control layer network of the smart substation, the networking optical fiber of the old measurement and control device is disconnected from the smart substation and the measurement and control configuration verification module is connected;

[0014] Import the new SCD configuration file in the debugging device into the monitoring background of the smart substation and the new simulation configuration file into the smart terminal of the smart substation, and restart to take effect;

[0015] The old measurement and control device is dismantled, and a new measurement and control device is installed, and the networking optical fiber of the new measurement and control device is connected to the smart substation.

[0016] Furthermore, before obtaining the ICD model of the new measurement and control device, the following steps are also included:

[0017] Obtain the current SCD configuration file of the smart substation and the old measurement and control configuration file of the old measurement and control device;

[0018] Determine the intelligent terminal that has a virtual circuit connection with the old measurement and control device based on the current SCD configuration file;

[0019] Copy the current SCD configuration file of the smart substation as the old SCD configuration file of the mirror background server, the current configuration file of the smart terminal as the old simulation configuration file of the virtual device, and the old measurement and control configuration file of the old measurement and control device.

[0020] Furthermore, according to the ICD model, the new measurement and control device is simulated to be connected to the smart substation, and a new measurement and control configuration file of the new measurement and control device, a new simulation configuration file of the virtual device, and a new SCD configuration file of the mirrored background server are obtained, including:

[0021] Import the ICD model of the new measurement and control device into the old SCD configuration file of the mirrored backend server to simulate the connection of the new measurement and control device to the smart substation;

[0022] Get the new SCD configuration file of the mirroring backend server and the new simulation configuration file of the virtual device;

[0023] Export the CID configuration file and CCD configuration file of the new measurement and control device from the new SCD configuration file as the new measurement and control configuration file.

[0024] Furthermore, the new telesignaling signal, new telemetry signal and new remote control signal after the new measurement and control device is simulated and connected are checked through the mirrored backend server and the intelligent station signal simulation module, including:

[0025] Virtually trigger new telesignaling signals and new telemetering signals through the intelligent station signal simulation module;

[0026] The mirrored backend server triggers a new remote control signal;

[0027] Determine whether the new telesignaling signal, the new telemetering signal and the new remote control signal are consistent with the preset simulated telesignaling signal, the preset simulated telemetering signal and the preset simulated remote control signal;

[0028] When the new telesignaling signal is consistent with the preset simulated telesignaling signal, the new telemetering signal is consistent with the preset simulated telemetering signal, and the new remote control signal is consistent with the preset simulated remote control signal, it is determined that the new telesignaling signal, the new telemetering signal and the new remote control signal are verified to be correct;

[0029] When at least one of the new telesignaling signal and the preset simulated telesignaling signal, the new telemetry signal and the preset simulated telemetry signal, and / or the new remote control signal and the preset simulated remote control signal is inconsistent, it is determined that the new telesignaling signal, the new telemetry signal and / or the new remote control signal are incorrectly checked.

[0030] Furthermore, the method further comprises:

[0031] The precision telemetry signal is virtually triggered through the intelligent station signal simulation module and sent to the new measurement and control device. The precision telemetry signal includes current telemetry data and voltage telemetry data.

[0032] Receive digital sampling of precision telemetry signals from the new measurement and control device to obtain telemetry feedback signals;

[0033] The amplitude and angle of the precision telemetry signal and the telemetry feedback signal are compared to obtain the accuracy verification result.

[0034] Furthermore, before downloading the new measurement and control configuration file to the new measurement and control equipment and copying the new simulation configuration file and the new SCD configuration file to the debugging equipment of the smart substation, the following steps are also included:

[0035] Based on the new measurement and control configuration file and the new SCD configuration file, the locking logic of the new measurement and control device is tested offline.

[0036] Furthermore, based on the new measurement and control configuration file and the new SCD configuration file, the blocking logic of the new measurement and control device is tested offline, including:

[0037] Determine the simulated circuit breaker, simulated disconnector and simulated grounding switch according to the new measurement and control configuration file and the new SCD configuration file;

[0038] The intelligent station signal simulation module sends circuit breaker position signals, disconnector position signals, and earthing switch position signals to the new measurement and control device to simulate the opening and closing positions of the circuit breaker, disconnector, and earthing switch;

[0039] The mirrored backend server sends remote control selection commands in different operation modes, controls the opening and closing of circuit breakers, disconnectors, and / or earthing switches according to the remote control selection commands, and obtains the remote control selection result based on whether the opening and closing remote control is successful;

[0040] Determine whether the blocking logic of the new measurement and control device is met based on the remote control selection result;

[0041] If it is satisfied, the offline test of the blocking logic of the new measurement and control device passes;

[0042] If not, the offline test of the blocking logic of the new measurement and control device fails, and the new measurement and control configuration file and the new SCD configuration file are reconfigured.

[0043] Furthermore, the operation modes include an anti-load opening and closing isolating switch mode, an anti-load closing earthing switch mode, and an anti-load delivery mode when the earthing switch is closed.

[0044] The blocking logic of the new measurement and control device in the load-proof opening and closing disconnector mode is as follows:

[0045] When the circuit breaker and disconnector are both in the closed position, the circuit breaker can only be opened first;

[0046] The blocking logic of the new measurement and control device in the anti-load closing earthing switch mode is:

[0047] When the circuit breaker and disconnector are both in the closed position, the grounding switch cannot be closed;

[0048] The blocking logic of the new measurement and control device in the load mode when the anti-earthing switch is closed is:

[0049] When the grounding switch is in the closed position, the circuit breaker and disconnector cannot be closed.

[0050] Secondly, a platform for online transformation and verification of smart substation measurement and control devices without power outages is provided, including:

[0051] Intelligent station signal simulation module, mirroring background server, offline networking switch, virtual equipment and measurement and control configuration verification module;

[0052] The measurement and control configuration verification module is used to perform the following steps:

[0053] When the old measurement and control device of the smart substation needs to be transformed into a new measurement and control device, the ICD model of the new measurement and control device is obtained;

[0054] According to the ICD model, the new measurement and control device is simulated to be connected to the smart substation, and a new measurement and control configuration file for the new measurement and control device, a new simulation configuration file for the virtual device, and a new SCD configuration file for the mirrored background server are obtained;

[0055] Verify the new telesignaling signal, new telemetry signal and new remote control signal after the new measurement and control device is simulated and connected through the mirror backend server and intelligent station signal simulation module;

[0056] After the new telesignaling signal, new telemetering signal, and new remote control signal are verified to be correct, the new measurement and control configuration file is downloaded to the new measurement and control equipment, and the new simulation configuration file and new SCD configuration file are copied to the debugging equipment of the smart substation;

[0057] After the online transformation verification platform for smart substation measurement and control devices is connected to the station control layer network of the smart substation, the networking optical fiber of the old measurement and control device is disconnected from the smart substation and the measurement and control configuration verification module is connected;

[0058] Import the new SCD configuration file in the debugging device into the monitoring background of the smart substation and the new simulation configuration file into the smart terminal of the smart substation, and restart to take effect;

[0059] The old measurement and control device is dismantled, and a new measurement and control device is installed, and the networking optical fiber of the new measurement and control device is connected to the smart substation.

[0060] The beneficial effects achieved by the present invention are:

[0061] When the old measurement and control device of the smart substation needs to be transformed into a new measurement and control device, the ICD model of the new measurement and control device is obtained; the new measurement and control device is connected to the smart substation according to the ICD model to obtain the new measurement and control configuration file of the new measurement and control device, the new simulation configuration file of the virtual device and the new SCD configuration file of the mirror background server; the new telesignaling signal, new telemetry signal and new remote control signal after the simulated access of the new measurement and control device are checked through the mirror background server and the smart station signal simulation module; when the new telesignaling signal, new telemetry signal and new remote control signal are checked and found to be correct, the new measurement and control configuration file is downloaded to the new measurement and control device. The new simulation configuration file and the new SCD configuration file are copied to the smart substation's debugging equipment. After the smart substation's measurement and control device online transformation verification platform is connected to the smart substation's station-level network, the old measurement and control device's networking fiber is disconnected from the smart substation and connected to the measurement and control configuration verification module. The new SCD configuration file in the debugging equipment is imported into the smart substation's monitoring backend, and the new simulation configuration file is imported into the smart substation's intelligent terminal, and a restart is performed to take effect. The old measurement and control device is removed, and a new one is installed, connecting the new measurement and control device's networking fiber to the smart substation. By simulating the connection of the new measurement and control device to the smart substation on the offline smart substation's measurement and control device online transformation verification platform, the corresponding configuration files for the new measurement and control device, virtual device, and mirrored backend server are obtained. At the actual measurement and control device replacement site, the verification platform is connected to the smart substation's station-level network, and the old measurement and control device is connected to the measurement and control configuration verification module. This shortens the transformation time, does not affect power supply, and does not lose monitoring and protection of grid equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 Provides a framework diagram for the integrated automation system of smart substations;

[0063] Figure 2 This is a framework diagram of the non-stop online transformation and verification platform for the intelligent substation measurement and control device of the present invention;

[0064] Figure 3 This is a flow chart of the method for online transformation of a measurement and control device of an intelligent substation without power outage according to the present invention;

[0065] Figure 4 This is a circuit structure diagram of the measurement and control locking logic of the present invention. DETAILED DESCRIPTION

[0066] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0067] like Figure 2The figure shows the framework of the non-stop online transformation and verification platform for intelligent substation measurement and control devices of the present invention, including an intelligent station signal simulation module 201, a mirroring backend server 202, an offline networking switch 203, a virtual device 204, a measurement and control configuration verification module 205, a virtual terminal block 206, a panel cabinet housing 207, and universal wheels 208. The figure also includes a multi-purpose display module 209. The offline networking switch 203 includes an MMS switch and an SV / GS switch.

[0068] The smart station signal simulation module 201 serves as a smart substation equipment model and signal simulation device. It is used to build a smart substation model signal simulation environment, simulate the signal triggering of the main equipment and auxiliary control equipment in the transformation bay (simulate the GS and SV layer equipment), and can simulate the triggering of the telemetry and telesignaling signals of the corresponding devices according to the monitoring information collection specifications. It can realize the source end signal triggering required by the substation and dispatching master station, and achieve offline verification of the correctness of the virtual terminal configuration of the measurement and control device.

[0069] Virtual device 204 is the virtualization of the merging unit, protection device, and smart terminal of the smart substation;

[0070] The mirror backend server 202 is a mirrored intelligent substation monitoring system server. The mirror backend server 202 can achieve: temporary monitoring of the primary and secondary equipment in the interval during the implementation of the renovation interval; correctness verification of the new measurement and control secondary circuit; no need for dispatch acceptance, each dispatch saves 4 signal acceptances (each time for 300 signal circuits of telesignaling, telemetry, and remote control), saving a total of 2,400 signals, 2 days of work, and 3 signal acceptance personnel (2 at the station end and 1 at the dispatch end);

[0071] The multi-purpose display module 209 is used to realize temporary display of the modification interval of the mirror backend server 202; monitor the display of the intelligent station signal simulation module 201;

[0072] The measurement and control configuration verification module 205 is used to verify whether the virtual terminal configuration file of the new measurement and control device is correct;

[0073] The virtual terminal block 206 is a virtualization of the signal loop terminal block in the smart substation;

[0074] The panel cabinet housing 207 and the universal wheels 208 are used to support the non-stop online transformation verification platform of the intelligent substation measurement and control device and can be flexibly moved.

[0075] like Figure 3 As shown, an embodiment of the present invention provides a method for online transformation of a measurement and control device of an intelligent substation without power outage, comprising:

[0076] 301. When an old measurement and control device of a smart substation needs to be transformed into a new measurement and control device, an ICD model of the new measurement and control device is obtained;

[0077] In this embodiment, when the old measurement and control device of the smart substation needs to be modified, it cannot be directly removed and replaced with a new measurement and control device. According to the traditional measurement and control device modification of the smart substation, the modification methods of interval power outage, voltage level power outage, and station-wide power outage are adopted. The three types of power outage modification have different degrees of impact on reliable power supply, long modification cycle, difficulty in coordinating power outage plans, and impact on production and living electricity consumption; In this embodiment, it is necessary to Figure 2 The illustrated example shows a virtual access test performed on the non-stop online retrofit verification platform for smart substation measurement and control devices to obtain the ICD model of the new measurement and control device. An ICD is an intelligent electronic device (IED) capability description file. It describes the functions and engineering capabilities of a specific IED and includes model self-description information, but does not include the IED instance name and communication parameters.

[0078] Before obtaining the ICD model for the new measurement and control device, it is necessary to conduct a preliminary on-site survey and back up the existing equipment and devices of the smart substation:

[0079] Obtain the current SCD configuration file of the smart substation and the old measurement and control configuration file of the old measurement and control device. SCD is the abbreviation of Substation Configuration Description in the IEC61850 standard for smart substations, that is, the entire station system configuration file, described in the SCL language.

[0080] Determine the intelligent terminal that has a virtual circuit connection with the old measurement and control device based on the current SCD configuration file;

[0081] Copy the current SCD configuration file of the smart substation as the old SCD configuration file of the mirror background server, the current configuration file of the smart terminal as the old simulation configuration file of the virtual device, and the old measurement and control configuration file of the old measurement and control device.

[0082] 302, simulating the connection of a new measurement and control device to the smart substation according to the ICD model, and obtaining a new measurement and control configuration file for the new measurement and control device, a new simulation configuration file for the virtual device, and a new SCD configuration file for the mirrored backend server;

[0083] In this embodiment, when simulating the connection of a new measurement and control device to a smart substation, the ICD model of the new measurement and control device is imported into the old SCD configuration file of the mirrored backend server. Since the ICD model of the new measurement and control device is different from that of the old measurement and control device, communication parameters such as an IP address are assigned to the new measurement and control device according to the design drawings, and virtual terminals are connected between the new measurement and control device and other virtual devices. The CID configuration file and CCD configuration file of the new measurement and control device are then derived from the updated new SCD configuration file as the new measurement and control configuration file.

[0084] CID profile is the abbreviation of Configured IED Description in IEC61850, which is the IED instance profile;

[0085] The CCD configuration file is used to configure the IED.

[0086] 303, verifying the new telesignaling signal, new telemetry signal, and new remote control signal after the new measurement and control device is simulated and connected through the mirrored backend server and the intelligent station signal simulation module;

[0087] In this embodiment, the process of checking the three remote control signals is as follows:

[0088] Virtually trigger new telesignaling signals and new telemetering signals through the intelligent station signal simulation module;

[0089] The mirrored backend server triggers a new remote control signal;

[0090] Determine whether the new telesignaling signal, the new telemetering signal and the new remote control signal are consistent with the preset simulated telesignaling signal, the preset simulated telemetering signal and the preset simulated remote control signal;

[0091] When the new telesignaling signal is consistent with the preset simulated telesignaling signal, the new telemetering signal is consistent with the preset simulated telemetering signal, and the new remote control signal is consistent with the preset simulated remote control signal, it is determined that the new telesignaling signal, the new telemetering signal and the new remote control signal are verified to be correct;

[0092] When at least one of the new telesignaling signal and the preset simulated telesignaling signal, the new telemetry signal and the preset simulated telemetry signal, and / or the new remote control signal and the preset simulated remote control signal is inconsistent, it is determined that the new telesignaling signal, the new telemetry signal and / or the new remote control signal are incorrectly checked.

[0093] 304. After the new telesignaling signal, new telemetering signal, and new remote control signal are verified to be correct, the new measurement and control configuration file is downloaded to the new measurement and control equipment, and the new simulation configuration file and the new SCD configuration file are copied to the debugging equipment of the smart substation.

[0094] In this embodiment, after the new configuration files are exported to the verification platform, the measurement and control device can be replaced on-site, and the smart substation measurement and control device non-stop online transformation verification platform is moved to the old measurement and control device replacement site of the smart substation.

[0095] 305, after the online transformation verification platform for the smart substation measurement and control device without power outage is connected to the station control layer network of the smart substation, the networking optical fiber of the old measurement and control device is disconnected from the smart substation, and the measurement and control configuration verification module is connected;

[0096] In this embodiment, the online transformation verification platform for the measurement and control device of the smart substation without power outage can only have the function of monitoring the smart terminal during the transformation of the measurement and control device after it is connected to the station control layer network of the smart substation. At this time, the networking optical fiber of the old measurement and control device is disconnected from the smart substation, and the measurement and control configuration verification module is connected to realize temporary monitoring of related primary and secondary equipment during the measurement and control replacement.

[0097] 306, importing the new SCD configuration file in the debugging device into the monitoring backend of the smart substation and the new simulation configuration file into the smart terminal of the smart substation, and restarting to take effect;

[0098] 307. Remove the old measurement and control device, install a new measurement and control device, and connect the networking optical fiber of the new measurement and control device to the smart substation.

[0099] In this embodiment, the old measurement and control device is removed from the physical installation location, and a new measurement and control device is installed. The power supply, network cable, etc. of the new measurement and control device are connected. After confirming that the new measurement and control device is connected to the station control layer, the networking optical fiber of the new measurement and control device is connected to the networking port of the smart substation.

[0100] The implementation principle of the embodiment of the present invention is:

[0101] When the old measurement and control device of the smart substation needs to be transformed into a new measurement and control device, the ICD model of the new measurement and control device is obtained; the new measurement and control device is connected to the smart substation according to the ICD model to obtain the new measurement and control configuration file of the new measurement and control device, the new simulation configuration file of the virtual device and the new SCD configuration file of the mirror background server; the new telesignaling signal, new telemetry signal and new remote control signal after the simulated access of the new measurement and control device are checked through the mirror background server and the smart station signal simulation module; when the new telesignaling signal, new telemetry signal and new remote control signal are checked and found to be correct, the new measurement and control configuration file is downloaded to the new measurement and control device. The new simulation configuration file and the new SCD configuration file are copied to the smart substation's debugging equipment. After the smart substation's measurement and control device online transformation verification platform is connected to the smart substation's station-level network, the old measurement and control device's networking fiber is disconnected from the smart substation and connected to the measurement and control configuration verification module. The new SCD configuration file in the debugging equipment is imported into the smart substation's monitoring backend, and the new simulation configuration file is imported into the smart substation's intelligent terminal, and a restart is performed to take effect. The old measurement and control device is removed, and a new one is installed, connecting the new measurement and control device's networking fiber to the smart substation. By simulating the connection of the new measurement and control device to the smart substation on the offline smart substation's measurement and control device online transformation verification platform, the corresponding configuration files for the new measurement and control device, virtual device, and mirrored backend server are obtained. At the actual measurement and control device replacement site, the verification platform is connected to the smart substation's station-level network, and the old measurement and control device is connected to the measurement and control configuration verification module. This shortens the transformation time, does not affect power supply, and does not lose monitoring and protection of grid equipment.

[0102] Combined with the above Figure 3 In the embodiment shown, preferably, in some embodiments of the present invention, it is also necessary to perform offline accuracy verification on the new measurement and control device.

[0103] The precision telemetry signal is virtually triggered through the intelligent station signal simulation module and sent to the new measurement and control device. The precision telemetry signal includes current telemetry data and voltage telemetry data.

[0104] Receive digital sampling of precision telemetry signals from the new measurement and control device to obtain telemetry feedback signals;

[0105] The amplitude and angle of the precision telemetry signal and the telemetry feedback signal are compared to obtain the ratio difference (amplitude difference percentage) and angle difference (angle difference percentage) under each set of sampling values. The accuracy verification results are automatically judged and marked according to the pre-set accuracy indicators.

[0106] Combined with the above Figure 3In the embodiment shown, preferably, in some embodiments of the present invention, before downloading the new measurement and control configuration file to the new measurement and control equipment and copying the new simulation configuration file and the new SCD configuration file to the debugging equipment of the smart substation, it is necessary to perform an offline test on the locking logic of the new measurement and control device based on the new measurement and control configuration file and the new SCD configuration file. The specific process is as follows:

[0107] Determine the simulated circuit breaker, simulated disconnector and simulated grounding switch according to the new measurement and control configuration file and the new SCD configuration file;

[0108] The intelligent station signal simulation module sends circuit breaker position signals, disconnector position signals, and earthing switch position signals to the new measurement and control device to simulate the opening and closing positions of the circuit breaker, disconnector, and earthing switch;

[0109] The mirrored backend server sends remote control selection commands in different operation modes, controls the opening and closing of circuit breakers, disconnectors, and / or earthing switches according to the remote control selection commands, and obtains the remote control selection result based on whether the opening and closing remote control is successful;

[0110] Determine whether the blocking logic of the new measurement and control device is met based on the remote control selection result;

[0111] If it is satisfied, the offline test of the blocking logic of the new measurement and control device passes;

[0112] If not, the offline test of the blocking logic of the new measurement and control device fails, and the new measurement and control configuration file and the new SCD configuration file are reconfigured.

[0113] like Figure 4 The figure shows the circuit structure of the measurement and control blocking logic. In particular, there are three disconnectors 1-1, 1-2, and 1-3, a circuit breaker 2, and three grounding switches 3-1, 3-2, and 3-3 between the smart substation and other substations.

[0114] The operation modes include load-protected disconnecting and closing isolating switch mode, load-protected closing earthing switch mode, and load-feeding mode when the earthing switch is closed.

[0115] The blocking logic of the new measurement and control device in the load-proof opening and closing disconnector mode is as follows:

[0116] When the circuit breaker and disconnector are both in the closed position, the circuit breaker can only be opened first;

[0117] The blocking logic of the new measurement and control device in the anti-load closing earthing switch mode is:

[0118] When the circuit breaker and disconnector are both in the closed position, the grounding switch cannot be closed;

[0119] The blocking logic of the new measurement and control device in the load mode when the anti-earthing switch is closed is:

[0120] When the grounding switch is in the closed position, the circuit breaker and disconnector cannot be closed.

[0121] Therefore, when the remote control selection command controls the opening and closing of the circuit breaker, disconnector and / or earthing switch, the remote control selection result must not violate the locking logic of the new measurement and control device. If it violates the result, it means that the offline test of the locking logic of the new measurement and control device has failed, and the new measurement and control configuration file and the new SCD configuration file need to be reconfigured.

[0122] The above embodiments describe a method for online transformation of a smart substation measurement and control device without power outage. The following describes a verification platform for online transformation of a smart substation measurement and control device without power outage using the method.

[0123] based on Figure 2 As shown in the framework diagram, an embodiment of the present invention provides a non-stop online transformation and verification platform for smart substation measurement and control devices, including:

[0124] Intelligent station signal simulation module 201, mirroring backend server 202, offline networking switch 203, virtual device 204, measurement and control configuration verification module 205, virtual terminal block 206, panel cabinet housing 207 and universal wheel 208; also has a multi-purpose display module 209; offline networking switch 203 includes MMS switch and SV / GS switch;

[0125] The measurement and control configuration verification module 205 is used to perform the following steps:

[0126] When the old measurement and control device of the smart substation needs to be transformed into a new measurement and control device, the ICD model of the new measurement and control device is obtained;

[0127] According to the ICD model, the new measurement and control device is simulated to be connected to the smart substation, and a new measurement and control configuration file for the new measurement and control device, a new simulation configuration file for the virtual device, and a new SCD configuration file for the mirrored background server are obtained;

[0128] Verify the new telesignaling signal, new telemetry signal and new remote control signal after the new measurement and control device is simulated and connected through the mirror backend server and intelligent station signal simulation module;

[0129] After the new telesignaling signal, new telemetering signal, and new remote control signal are verified to be correct, the new measurement and control configuration file is downloaded to the new measurement and control equipment, and the new simulation configuration file and new SCD configuration file are copied to the debugging equipment of the smart substation;

[0130] After the online transformation verification platform for smart substation measurement and control devices is connected to the station control layer network of the smart substation, the networking optical fiber of the old measurement and control device is disconnected from the smart substation and the measurement and control configuration verification module is connected;

[0131] Import the new SCD configuration file in the debugging device into the monitoring background of the smart substation and the new simulation configuration file into the smart terminal of the smart substation, and restart to take effect;

[0132] The old measurement and control device is dismantled, and a new measurement and control device is installed, and the networking optical fiber of the new measurement and control device is connected to the smart substation.

[0133] The implementation principle of the embodiment of the present invention is:

[0134] By simulating the connection of a new measurement and control device to the smart substation on the offline smart substation measurement and control device online transformation verification platform without power outage, the configuration files corresponding to the new measurement and control device, virtual equipment and mirrored background server are obtained. At the actual measurement and control device replacement site, the verification platform is connected to the station control layer network of the smart substation, and the old measurement and control device is connected to the measurement and control configuration verification module. The transformation time is short, and there will be no impact on power supply, and there will be no loss of monitoring and protection of power grid equipment.

[0135] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0136] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0137] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1The function specified in one or more boxes.

[0138] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0139] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A method for online transformation of a smart substation measurement and control device without power outage, characterized in that: The platform is applied to the online transformation verification platform for the measurement and control device of the intelligent substation without power outage. The platform includes an intelligent station signal simulation module, a mirroring background server, an offline networking switch, a virtual device and a measurement and control configuration verification module. The method for the online transformation of the measurement and control device of the intelligent substation without power outage includes: When an old measurement and control device of a smart substation needs to be transformed into a new measurement and control device, an ICD model of the new measurement and control device is obtained; Simulate the connection of the new measurement and control device to the smart substation according to the ICD model, and obtain a new measurement and control configuration file for the new measurement and control device, a new simulation configuration file for the virtual device, and a new SCD configuration file for the mirrored backend server; Verify the new telesignaling signal, new telemetry signal and new remote control signal after the new measurement and control device is simulated and connected through the mirror backend server and the intelligent station signal simulation module; After the new telesignaling signal, the new telemetry signal, and the new remote control signal are verified to be correct, the new measurement and control configuration file is downloaded to the new measurement and control device, and the new simulation configuration file and the new SCD configuration file are copied to the debugging equipment of the smart substation; After the non-stop online transformation verification platform for the smart substation measurement and control device is connected to the station control layer network of the smart substation, the networking optical fiber of the old measurement and control device is disconnected from the smart substation and connected to the measurement and control configuration verification module; Import the new SCD configuration file in the debugging device into the monitoring backend of the smart substation and import the new simulation configuration file into the smart terminal of the smart substation, and restart to take effect; The old measurement and control device is dismantled, and the new measurement and control device is installed, and the networking optical fiber of the new measurement and control device is connected to the smart substation.

2. The method for online transformation of a smart substation measurement and control device without power outage according to claim 1 is characterized in that: Before obtaining the ICD model of the new measurement and control device, the method further includes: Obtaining a current SCD configuration file of the smart substation and an old measurement and control configuration file of the old measurement and control device; Determine, according to the current SCD configuration file, an intelligent terminal having a virtual circuit connection with the old measurement and control device; The current SCD configuration file of the smart substation is copied as the old SCD configuration file of the mirror background server, the current configuration file of the smart terminal is copied as the old simulation configuration file of the virtual device and the old measurement and control configuration file of the old measurement and control device.

3. The method for online transformation of a smart substation measurement and control device without power outage according to claim 2 is characterized in that: The step of simulating the connection of the new measurement and control device to the smart substation according to the ICD model to obtain a new measurement and control configuration file for the new measurement and control device, a new simulation configuration file for the virtual device, and a new SCD configuration file for the mirrored backend server includes: Importing the ICD model of the new measurement and control device into the old SCD configuration file of the mirrored backend server to simulate the new measurement and control device being connected to the smart substation; Obtain a new SCD configuration file for the mirror backend server and a new simulation configuration file for the virtual device; The CID configuration file and the CCD configuration file of the new measurement and control device are derived from the new SCD configuration file as a new measurement and control configuration file.

4. The method for online transformation of a smart substation measurement and control device without power outage according to claim 1 is characterized in that: The checking of the new telesignaling signal, the new telemetry signal and the new remote control signal after the simulated access of the new measurement and control device by the mirror background server and the intelligent station signal simulation module includes: Virtually triggering new telesignaling signals and new telemetry signals through the intelligent station signal simulation module; The mirror backend server triggers a new remote control signal; Determining whether the new telesignaling signal, the new telemetry signal, and the new remote control signal are consistent with the preset simulated telesignaling signal, the preset simulated telemetry signal, and the preset simulated remote control signal; When the new telesignaling signal is consistent with the preset simulated telesignaling signal, the new telemetry signal is consistent with the preset simulated telemetry signal, and the new remote control signal is consistent with the preset simulated remote control signal, determining that the new telesignaling signal, the new telemetry signal, and the new remote control signal are verified to be correct; When at least one of the new telesignaling signal and the preset simulated telesignaling signal, the new telemetry signal and the preset simulated telemetry signal, and / or the new remote control signal and the preset simulated remote control signal is inconsistent, it is determined that the new telesignaling signal, the new telemetry signal and / or the new remote control signal are incorrectly checked.

5. The method for online transformation of a smart substation measurement and control device without power outage according to claim 1 is characterized in that: The method further comprises: A precision telemetry signal is virtually triggered through the intelligent station signal simulation module and sent to the new measurement and control device, wherein the precision telemetry signal includes current telemetry data and voltage telemetry data; Receiving digital sampling of the precision telemetry signal by the new measurement and control device to obtain a telemetry feedback signal; The amplitude and angle of the precision telemetry signal and the telemetry feedback signal are compared to obtain a precision verification result.

6. The method for online transformation of a smart substation measurement and control device without power outage according to claim 1 is characterized in that: Before downloading the new measurement and control configuration file to the new measurement and control device and copying the new simulation configuration file and the new SCD configuration file to the debugging equipment of the smart substation, the method further includes: An offline test is performed on the blocking logic of the new measurement and control device according to the new measurement and control configuration file and the new SCD configuration file.

7. The method for online transformation of a smart substation measurement and control device without power outage according to claim 6, characterized in that: The offline verification of the blocking logic of the new measurement and control device according to the new measurement and control configuration file and the new SCD configuration file includes: Determine the simulated circuit breaker, simulated disconnect switch and simulated grounding switch according to the new measurement and control configuration file and the new SCD configuration file; Sending a circuit breaker position signal, an isolating switch position signal, and an earthing switch position signal to the new measurement and control device through the intelligent station signal simulation module to simulate the opening and closing positions of the circuit breaker, the isolating switch, and the earthing switch; Sending remote control selection commands in different operation modes by the mirror backend server, controlling the opening and closing of the circuit breaker, the disconnector and / or the earthing switch according to the remote control selection commands, and obtaining a remote control selection result according to whether the opening and closing remote control is successful; Determining whether the locking logic of the new measurement and control device is satisfied according to the remote control selection result; If so, the offline test of the blocking logic of the new measurement and control device passes; If not, the offline test of the blocking logic of the new measurement and control device fails, and the new measurement and control configuration file and the new SCD configuration file are reconfigured.

8. The method for online transformation of a smart substation measurement and control device without power outage according to claim 7 is characterized in that: The operation modes include load-proof disconnecting and closing isolating switch mode, load-proof closing earthing switch mode and load-proof earthing switch closing mode. The blocking logic of the new measurement and control device in the anti-load opening and closing isolating switch mode is as follows: When the circuit breaker and the isolating switch are both in the closed position, the circuit breaker can only be opened first; The locking logic of the new measurement and control device in the anti-load closing grounding switch mode is: When the circuit breaker and the isolating switch are both in the closed position, the grounding switch cannot be closed; The locking logic of the new measurement and control device in the load-feeding mode when the anti-grounding switch is closed is: When the grounding switch is in the closed position, the circuit breaker and the disconnector cannot be closed.

9. A non-stop online transformation and verification platform for intelligent substation measurement and control equipment, characterized in that: include: Intelligent station signal simulation module, mirroring background server, offline networking switch, virtual equipment and measurement and control configuration verification module; The measurement and control configuration verification module is used to perform the following steps: When an old measurement and control device of a smart substation needs to be transformed into a new measurement and control device, an ICD model of the new measurement and control device is obtained; Simulate the connection of the new measurement and control device to the smart substation according to the ICD model, and obtain a new measurement and control configuration file for the new measurement and control device, a new simulation configuration file for the virtual device, and a new SCD configuration file for the mirrored backend server; Verify the new telesignaling signal, new telemetry signal and new remote control signal after the new measurement and control device is simulated and connected through the mirror backend server and the intelligent station signal simulation module; After the new telesignaling signal, the new telemetry signal, and the new remote control signal are verified to be correct, the new measurement and control configuration file is downloaded to the new measurement and control device, and the new simulation configuration file and the new SCD configuration file are copied to the debugging equipment of the smart substation; After the non-stop online transformation verification platform for the smart substation measurement and control device is connected to the station control layer network of the smart substation, the networking optical fiber of the old measurement and control device is disconnected from the smart substation and connected to the measurement and control configuration verification module; Import the new SCD configuration file in the debugging device into the monitoring backend of the smart substation and import the new simulation configuration file into the smart terminal of the smart substation, and restart to take effect; The old measurement and control device is dismantled, and the new measurement and control device is installed, and the networking optical fiber of the new measurement and control device is connected to the smart substation.

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