CN113629871B - Optimized operation method of wave recording master station by using source end wave recording information filtering - Google Patents
Optimized operation method of wave recording master station by using source end wave recording information filtering Download PDFInfo
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- 230000010365 information processing Effects 0.000 claims abstract description 8
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000008859 change Effects 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 18
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/02—Capturing of monitoring data
- H04L43/028—Capturing of monitoring data by filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The application discloses a method for optimizing operation of a wave recording master station by using source wave recording information filtering, which comprises the following steps: the method comprises the steps of functionally packaging Cheng Lu wave information filtering modules of a telemetry monitoring module, a state monitoring module and a recording data acquisition module in a recording master station system, and deploying the modules to a transformer substation and a power plant side; a wave recording information filtering module is connected to the wave recording information processing module of the wave recorder in the transmission process of transmitting wave recording information to the wave recording master station; the wave recording information filtering module filters wave recording information and sends the filtered wave recording information to the wave recording master station. The application achieves the effect of processing and filtering the wave recording information by the source end of the transformer substation and the power plant through the wave recording information filtering module, improves the data energy density, greatly reduces the data to be sent, improves the information processing pressure of the wave recording master station system, and improves the operation stability and the fault analysis efficiency of the master station system.
Description
Technical Field
The application relates to the technical field of wave recording information processing in an electric power system, in particular to an optimized operation method of a wave recording master station by utilizing source end wave recording information filtering.
Background
The wave recording master station of the power system can provide complete data and analysis reports when the power grid fails, and is an important supporting tool for scheduling auxiliary decisions. The wave recording master station monitors alarm information, telemetry information, state information, wave recording data and other information of all transformer substations in the district and wave recorders in the power plant through a dispatching data network, and is respectively provided with a targeted alarm monitoring module, a telemetry monitoring module, a state monitoring module, a wave recording data acquisition module and other information processing modules for processing.
However, the current modular design of the wave recording master station can not adapt to unlimited increase of the number of substations and power plants while simplifying the system architecture and facilitating operation and maintenance. Firstly, recorder information processed by a recorder master station is multi-source, massive and random, and the calculated data cannot be accurately predicted; secondly, a database and a system model in the wave recording master station system are unique, public and scarce resources, and simultaneously provide interactive access for other master station systems and are very sensitive to the interactive frequency; third, the storage resources of the wave recording master station system are limited, but the growth of wave recording data is infinite, and the pressure is formed on the storage space and the read-write efficiency. Under the influence of natural disasters and extreme climates, the response speed of the wave recording master station system is greatly reduced, the operation is blocked, the machine is down and even important data is lost due to the fact that the large-scale wave recording data is on the rise, and the capacity of the wave recording master station system for scheduling decisions is affected.
Disclosure of Invention
The application aims to provide an optimized operation method of a wave recording master station by using source wave recording information filtering, which can solve the problem that in the prior art, the quantity of transformer substations and power plants is infinitely increased to cause infinite increase of wave recording data, and pressure is formed on the storage space and the read-write efficiency of the wave recording master station.
The application aims at realizing the following technical scheme:
the application provides a method for optimizing operation of a wave recording master station by using source wave recording information filtering, which comprises the following steps:
the method comprises the steps of functionally packaging Cheng Lu wave information filtering modules of a telemetry monitoring module, a state monitoring module and a recording data acquisition module in a recording master station system, and deploying the modules to a transformer substation and a power plant side;
a wave recording information filtering module is arranged on the way of transmitting wave recording information from a wave recording information processing module of the wave recorder to a wave recording main station;
the wave recording information filtering module filters wave recording information and sends the filtered wave recording information to the wave recording master station.
Further, the wave recording information filtering module comprises a telemetry information filtering sub-module, a state information filtering sub-module and a wave recording data filtering sub-module; the recording information includes recording data, telemetry information, and status information.
Further, the filtering process of the wave recording data specifically includes:
s101, a recording data filtering submodule detects whether state quantity in recording data changes, if not, the recording data is not uploaded, otherwise, the step S102 is carried out;
s102, detecting a fault current effective value in the wave recording data by a wave recording data filtering submodule, comparing the fault current effective value before the fault, if the fault current effective value is 1.3 times lower than the current effective value before the fault, not uploading the wave recording data, otherwise, entering step S103;
s103, the recording data filtering sub-module detects a current effective value after the fault, if the current effective value is not more than 0.25 time of the current effective value before the fault, the recording data is uploaded, and otherwise, the step S104 is carried out;
s104, if the effective value of the current after the fault is not less than 1.5 times of the effective value of the current before the fault, not uploading the recorded data, otherwise, entering step S105;
s105, if the effective value of the current after the fault is smaller than 0.01 ampere, uploading the recorded data, otherwise, not uploading the recorded data.
Further, the filtering principle of the telemetry information is as follows:
the telemetering information filtering sub-module ignores the information after receiving the information sent by the recorder in telemetering;
the method comprises the steps that after the recording data are processed by a recording data filtering sub-module, copies of the recording data which are sent to a recording master station are submitted to a telemetry information filtering sub-module;
the telemetry information filtering sub-module obtains the last segment part of the wave recording data, calculates P, Q, U, I and F according to line groups, and sends the last segment part to the wave recording master station.
Further, the filtering process of the state information includes:
according to the original 15 second period, after detecting the change of the communication state of the recorder, the state information filtering sub-module remembers the original state before the change and the new state after the change;
after 15 minutes of delay, the state information filtering submodule re-detects the communication state of the recorder, if the communication state is the same as the original state, the state change information is ignored, otherwise, 15 minutes of delay is performed again, the state information filtering submodule re-detects the communication state of the recorder, if the communication state is the same as the original state, the state change information is ignored, and otherwise, the new state information is sent.
The application has the beneficial effects that:
the application achieves the effect of processing and filtering the wave recording information by the source end of the transformer substation and the power plant through the wave recording information filtering module, improves the data energy density, greatly reduces the data to be sent, improves the information processing pressure of the wave recording master station system, improves the operation stability and the fault analysis efficiency of the master station system, and achieves the aim of optimizing the operation of the wave recording master station by using the source end wave recording information filtering method.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a source-side wave recording information filtering module deployment;
FIG. 2 is a schematic diagram of a source-side wave recording information filtering module before and after deployment;
FIG. 3 is a schematic diagram of a source-side recording information filtering process;
FIG. 4 is a graph of recording data reflecting a grid fault transient;
fig. 5 is a flow of filtering processing of source recording data.
Detailed Description
Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present disclosure will become readily apparent to those skilled in the art from the following disclosure, which describes embodiments of the present disclosure by way of specific examples. It will be apparent that the described embodiments are merely some, but not all embodiments of the present disclosure. The disclosure may be embodied or practiced in other different specific embodiments, and details within the subject specification may be modified or changed from various points of view and applications without departing from the spirit of the disclosure. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
Referring to fig. 1 and 2, the present application provides an optimized operation method of a recording master station using source-side recording information filtering, including:
the method comprises the steps of functionally packaging Cheng Lu wave information filtering modules of a telemetry monitoring module, a state monitoring module and a recording data acquisition module in a recording master station system, and deploying the modules to a transformer substation and a power plant side;
a wave recording information filtering module is connected to the wave recording information processing module of the wave recorder in the transmission process of transmitting wave recording information to the wave recording master station;
the wave recording information filtering module filters wave recording information and sends the filtered wave recording information to the wave recording master station.
Further, in a preferred embodiment of the present application, the wave recording information filtering module includes a telemetry information filtering sub-module, a status information filtering sub-module and a wave recording data filtering sub-module; the recording information includes recording data, telemetry information, and status information.
Referring to fig. 4 and 5, in a further preferred embodiment of the present application, the recording data filtering sub-module detects by analyzing only the switching value and the current effective value characteristic in the data, without extracting the constant value parameter from the master station model or other channels to participate in calculation, and the current waveform reflects the curve characteristic of the transient process of the power grid fault as shown in fig. 4, and the filtering process of the recording data specifically includes:
s101, a recording data filtering submodule detects whether state quantity in recording data changes, if not, the recording data is not uploaded, otherwise, the step S102 is carried out;
s102, detecting a fault current effective value in the wave recording data by a wave recording data filtering submodule, comparing the fault current effective value before the fault, if the fault current effective value is 1.3 times lower than the current effective value before the fault, not uploading the wave recording data, otherwise, entering step S103;
s103, the recording data filtering sub-module detects a current effective value after the fault, if the current effective value is not more than 0.25 time of the current effective value before the fault, the recording data is uploaded, and otherwise, the step S104 is carried out;
s104, if the effective value of the current after the fault is not less than 1.5 times of the effective value of the current before the fault, not uploading the recorded data, otherwise, entering step S105;
s105, if the effective value of the current after the fault is smaller than 0.01 ampere, uploading the recorded data, otherwise, not uploading the recorded data.
It should be noted that, the design basis of the filtering of the recording data is: the recording data is from the starting and recording of the recorder, the reason for the starting of the recorder is divided into three conditions of general disturbance, maintenance test starting and fault starting, such as
Table 1 is summary of recorder start type, duty cycle and main features:
table 1 summary of recorder start-up type, duty cycle and main features
Wherein, the general disturbance accounts for more than 98 percent, the current change before and after the wave recording is started and reset is not obvious, the data is of no value, and the data is filtered before being sent to the main station; the overhaul test is usually carried out once in 1-2 years, the duty ratio is extremely small, and only partial data which obviously does not have power grid fault starting is filtered before the overhaul test is sent to the main station; the occurrence of the power grid faults has randomness, the duty ratio is extremely small, the waveform curve shows that the current is increased sharply, the effective value of the current is reduced sharply and approaches to 0 after the reset, and the effective value of the current is obviously reduced compared with the effective value of the current before the start.
By filtering the recording data, the method can efficiently filter more than 98% of general disturbance recording data and a part of experimental maintenance data by simply analyzing the state quantity signal and the current analog quantity signal on the premise of not depending on the constant value parameter, thereby greatly reducing the data quantity of the uploading recording master station. Meanwhile, after invalid disturbance data above 98% are filtered, the data volume is reduced to be below 2% of the original data volume, and meanwhile, the frequency and the host computing power expenditure of constant value parameter interaction with a system model in the process of collecting flow of an information network of a wave recording master station system, storing consumption of wave recording data and fault analysis are saved. The part of overhead is distributed to the source end of the transformer substation and the power plant and is completed by a plurality of recorder background managers, and the influence is small.
Referring to fig. 3, in a further preferred embodiment of the present application, telemetry information of the recorder is divided into five types, i.e., P (active), Q (reactive), U (voltage), I (current) and F (frequency), and the five types of values of the telemetry information are calculated for each group of lines every two fixed minutes according to the number of lines connected to the recorder, and then the five types of values are sent to the recorder, and the filtering principle of the improved telemetry information is as follows:
the telemetering information filtering sub-module ignores the information after receiving the information sent by the recorder in telemetering; i.e., directly ignoring the mechanical mode that gets rid of the fixed two minute upload telemetry.
The method comprises the steps that after the recording data are processed by a recording data filtering sub-module, copies of the recording data which are sent to a recording master station are submitted to a telemetry information filtering sub-module;
the telemetry information filtering sub-module obtains the last segment part of the wave recording data, calculates P, Q, U, I and F according to line groups, and sends the last segment part to the wave recording master station.
The design basis of the telemetering information filtering is as follows:
the first and P, Q, U, I, F5 kinds of information belong to steady-state quantity, and the fluctuation range and frequency are low;
the second principle of the recorder is that, as shown in fig. 2, the transient change process between two successive steady states, i.e. the complex process between one steady state reaching the other, is recorded. Therefore, the change time of the telemetry information depends on the starting of the recorder, but whether the change is larger depends on a new steady-state measurement result, and before the recorded data is sent to the main station, the end part, namely the P, Q, U, I, F of the new steady-state is taken, so that the telemetry information of the recorder can be reflected timely, accurately and without omission.
The remote sensing information in a new steady state is captured by binding with the recording data filtering module, so that the mechanical mode of uploading the remote sensing information for two minutes is eliminated, the timely and accurate remote sensing information is ensured, and the frequency of uploading the master station is greatly reduced. The remote sensing information of the wave recorder is fixedly collected once in 15 minutes before, the wave recorder is improved to be sent once after the occurrence of the power grid fault, the power grid fault is a small probability event, the frequency of sending the remote sensing information by one wave recorder every week is 8640 before the application is applied according to the measurement and calculation basis of the power grid fault starting of the wave recorder every week, and then the frequency of sending the remote sensing information by one wave recorder every week is only 1 time, so that the data energy density of the remote sensing information is improved by more than 99 percent, and the network interaction and database access frequency required by the main station for collecting the remote sensing information are also greatly reduced.
Furthermore, in a preferred embodiment of the present application, the state information of the recorder reflects the communication connection state between the recorder and the recording master station, and there are two types of "on" and "off", and in general, the communication is in "on" state, but the recorder and the recording master station are temporarily or long-time "off" due to the factors of damage to mechanical equipment of the recorder, disconnection of communication software module, damage to network port, damage/loosening/removing of network cable, switch failure, and limitation of gateway policy at each level. The current processing mode of the master station is to update the latest state of all the changed recorders every 15 seconds and update the latest state of all the recorders every 30 minutes. The filtering process of the state information after the improvement is as follows:
according to the original 15 second period, after detecting the change of the communication state of the recorder, the state information filtering sub-module remembers the original state before the change and the new state after the change;
after 15 minutes of delay, the state information filtering submodule re-detects the communication state of the recorder, if the communication state is the same as the original state, the state change information is ignored, otherwise, 15 minutes of delay is performed again, the state information filtering submodule re-detects the communication state of the recorder, if the communication state is the same as the original state, the state change information is ignored, and otherwise, the new state information is sent.
And if a state inconsistent with the new state at the last time of change is detected within 15 minutes of delay and within 15 minutes of delay again, immediately returning to the original 15-second period to detect the communication state change of the recorder, and restarting the filtering flow.
Representative recorder state changes and upload cases are listed in table 2:
TABLE 2 status change and upload case for recorder
The state information filtering has the advantages that transient state changes are eliminated, permanent state changes are confirmed within 30 minutes, a mechanical mode for fixing state information during 15 seconds is eliminated, the telemetering information is ensured to be timely and accurate, and meanwhile, the frequency for uploading the master station is greatly reduced. The state information of the recorder is fixedly collected once from 15 seconds before, the state information is improved to be sent once after the permanent state change occurs, the permanent state change is a small probability event, the state change is measured and calculated according to the state change of the recorder once a day, before the method is applied, the number of times that one recorder needs to send the state every day is 5760, and then the state information is sent only 2 times, so that the data energy density of the state information is improved by more than 99%, and the network interaction and database access frequency required by the master station for collecting the state information are also greatly reduced.
The above description is for the purpose of illustrating the embodiments of the present application and is not to be construed as limiting the application, but is intended to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the application.
Claims (1)
1. The method for optimizing the operation of the wave recording master station by using the source wave recording information filtering is characterized by comprising the following steps:
the method comprises the steps of functionally packaging Cheng Lu wave information filtering modules of a telemetry monitoring module, a state monitoring module and a recording data acquisition module in a recording master station system, and deploying the modules to a transformer substation and a power plant side;
a wave recording information filtering module is connected to the wave recording information processing module of the wave recorder in the transmission process of transmitting wave recording information to the wave recording master station;
the wave recording information filtering module filters wave recording information and sends the filtered wave recording information to the wave recording master station;
the wave recording information filtering module comprises a telemetry information filtering sub-module, a state information filtering sub-module and a wave recording data filtering sub-module; the wave recording information comprises wave recording data, telemetry information and state information;
the filtering process of the wave recording data specifically comprises the following steps:
s101, a recording data filtering submodule detects whether state quantity in recording data changes, if not, the recording data is not uploaded, otherwise, the step S102 is carried out;
s102, detecting a fault current effective value in the wave recording data by a wave recording data filtering submodule, comparing the fault current effective value before the fault, if the fault current effective value is 1.3 times lower than the current effective value before the fault, not uploading the wave recording data, otherwise, entering step S103;
s103, the recording data filtering sub-module detects a current effective value after the fault, if the current effective value is not more than 0.25 time of the current effective value before the fault, the recording data is uploaded, and otherwise, the step S104 is carried out;
s104, if the effective value of the current after the fault is not less than 1.5 times of the effective value of the current before the fault, not uploading the recorded data, otherwise, entering step S105;
s105, if the effective value of the current after the fault is smaller than 0.01 ampere, uploading the recorded data, otherwise, not uploading the recorded data;
the filtering process of the telemetry information comprises the following steps:
the telemetering information filtering sub-module ignores the information after receiving the information sent by the recorder in telemetering;
the method comprises the steps that after the recording data are processed by a recording data filtering sub-module, copies of the recording data which are sent to a recording master station are submitted to a telemetry information filtering sub-module;
the telemetry information filtering sub-module acquires the last section part of the wave recording data, calculates active power P, reactive power Q, voltage U, current I and frequency F according to line groups, and sends the active power P, the reactive power Q, the voltage U, the current I and the frequency F to the wave recording master station;
the filtering process of the state information comprises the following steps:
according to the original 15 second period, after detecting the change of the communication state of the recorder, the state information filtering sub-module remembers the original state before the change and the new state after the change;
after 15 minutes of delay, the state information filtering submodule re-detects the communication state of the recorder, if the communication state is the same as the original state, the state change information is ignored, and if the communication state is different from the original state, the delay is carried out for 15 minutes again, and the communication state of the recorder is detected again.
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| CN112436984A (en) * | 2020-11-30 | 2021-03-02 | 清华大学 | Data center network telemetry method, system, storage medium and telemetry server |
| CN113189517A (en) * | 2021-04-26 | 2021-07-30 | 福建奥通迈胜电力科技有限公司 | Analysis method for efficient transmission and filtering of ground fault recording file |
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