CN112446801A - System and method for effectively improving data quality of power system - Google Patents

System and method for effectively improving data quality of power system Download PDF

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CN112446801A
CN112446801A CN202011173435.8A CN202011173435A CN112446801A CN 112446801 A CN112446801 A CN 112446801A CN 202011173435 A CN202011173435 A CN 202011173435A CN 112446801 A CN112446801 A CN 112446801A
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transformer
checking
active
line
measurement
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王顺江
吴鑫
徐淼
赵春光
周桂平
陈威
王铎
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Beijing Kedong Electric Power Control System Co Ltd
State Grid Liaoning Electric Power Co Ltd
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State Grid Liaoning Electric Power Co Ltd
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    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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    • 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
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Abstract

The invention relates to a system and a method for effectively improving the data quality of a power system, which mainly comprise the following components: the system comprises a preposed checking module, a model checking module, a data checking module and a graph checking module; the preposed checking module is mainly used for link checking and preposed non-actual measurement checking; the model checking module is used for parameter checking, model checking and topology checking; the data checking module is mainly used for quality code checking, unbalance checking and network topology analysis checking; the graph checking module is used for checking whether the plant diagram is missing or not according to the plant table record, checking whether the plant ID of the plant diagram is correct or not, checking whether the ID of each device in the plant diagram is missing or not, checking whether the device ID can be found or not, and checking whether the device ID belongs to the plant. The method can find out problematic data in the power system, can effectively improve the data quality of the power system after rectification, and ensures that the operating condition of the power grid can be efficiently, accurately and comprehensively tracked and known by an information power system dispatching center.

Description

System and method for effectively improving data quality of power system
Technical Field
The invention belongs to the technical field of power systems, and particularly relates to a system and a method for effectively improving data quality of a power system.
Background
With the rapid development of the ultrahigh voltage transmission technology in China, domestic interconnection of power grids in various regions is gradually carried out, so that the scale of the power grid is continuously enlarged. The large amount of synchronization of new energy power generation and distributed power generation increases complexity for a large power grid, so that the power grid in China has the characteristic of being large and complex.
When equipment faults or communication faults occur in intelligent equipment, a protection device and the like of the transformer substation, the transformer substation monitoring system and the acquisition end still continue to acquire measurement information, and bad data information can be generated at the moment. The information is uploaded to a master station system, the master station state estimation result is influenced, the master station state estimation processes and analyzes the uploaded data, the state estimation result is formed, and the data abnormity is displayed to scheduling maintenance personnel for the scheduling maintenance personnel to correctly process. But the problem of low overall data quality of the system cannot be fundamentally solved only by the decision of scheduling maintenance personnel.
Therefore, an automatic method is urgently needed to improve the data quality in the power system, so that the result of the state estimation of the power system can be improved, and the operating condition of the power grid can be efficiently, accurately and comprehensively tracked and known by an information power system dispatching center. The measurement data obtained by the dynamic processing can truly feed back the relevant state of the operation condition, which is the important factor of the real-time analysis and real-time control of the power grid system. The accuracy and the dynamic property of data in the power system play an important role in the overall analysis, scientific management and control and decision making of the power grid system.
Disclosure of Invention
The invention aims to provide a system and a method for effectively improving the data quality of an electric power system, which can find problematic data in the electric power system through the system, and can effectively improve the data quality of the electric power system after rectification, thereby ensuring that an informationized electric power system dispatching center can efficiently, accurately and comprehensively track and know the operation condition of a power grid.
In order to solve the technical problems, the invention adopts the following technical scheme:
a system for effectively improving the data quality of a power system mainly comprises the following components: the system comprises a preposed checking module, a model checking module, a data checking module and a graph checking module; the preposed checking module is mainly used for link checking and preposed non-actual measurement checking; the model checking module is used for parameter checking, model checking and topology checking; the data checking module is mainly used for quality code checking, unbalance checking and network topology analysis checking; the graph checking module is used for checking whether the plant diagram is missing or not according to the plant table record, checking whether the plant ID of the plant diagram is correct or not, checking whether the ID of each device in the plant diagram is missing or not, checking whether the device ID can be found or not, and checking whether the device ID belongs to the plant.
Further, the data checking module also has other checking functions.
A method of upgrading a system for efficiently upgrading data quality of an electrical power system, comprising the steps of:
checking a link: the preposed checking module checks the preposed link state to find the link with the problem and ensure that the preposed link can be normally used;
the pre-placed non-actual measurement inspection: the prepositive checking module checks whether the data in the acquisition point list is acquired or not, and counts the data which has a point number but is abnormally sent;
checking the parameters: the model checking module checks whether the parameter models of the line, the transformer and the winding, the gear parameter and the series-parallel compensation equipment are correct or not;
fourth, model checking: the model checking module checks the corresponding relation between the line segment of the line and the end point of the line segment and checks the corresponding relation between the transformer and the transformer winding; checking the winding type of the transformer, and whether the double winding or the triple winding is correct; checking whether the winding type of the transformer winding is correct, whether the high, medium and low voltage sides are maintained accurately, and whether the voltage grade of each winding is accurate;
fifthly, topology verification: the model checking module checks whether the connection point numbers of all the devices are missing or not and whether the voltage levels of the devices are correct or not;
sixthly, quality code verification: the data checking module finds all the telemetering remote signaling points which are not acquired in the front and sets the quality codes of the telemetering remote signaling points as non-actual measurement; finding out all remote measuring points which are not changed for a long time, and setting the quality codes of the remote measuring points to be unchanged; finding out all suspicious remote-measuring remote-signalling points and setting the quality codes as suspicious;
jerkiness verification: the data checking module judges the unbalance amount of the bus, the line and the transformer, and if the unbalance amount occurs, the problem is checked on the related data;
and checking network topology analysis: the data checking module calculates the communication relation among the devices according to the information of the connection point number field in the device table, calculates the topology coloring of the devices, and the devices with the same coloring value are in the same island, namely all the devices with the same island number are communicated;
checking the self-supporting pattern: and the graph checking module checks whether the plant diagram is missing or not according to the plant table record, checks whether the plant ID of the plant diagram is correct or not, checks whether the ID of each device in the plant diagram is missing or not, and whether the device ID can be found or not, and whether the device ID belongs to the plant.
Further, the step sixteenth is to classify the quality code of the reference image into suspicious conditions as follows:
a) suspicious measurement corresponding to remote signaling and remote measurement:
the method comprises the steps that telemetering of a bus, a transformer winding, a load, a generator and an alternating current line segment end point and the corresponding state of an associated breaker are identified, and key identification is carried out when remote signaling is carried out to indicate that telemetering is carried out to have a value or remote signaling is carried out to indicate that telemetering is carried out to have no value;
b) active, reactive and current corresponding suspicious measurement:
according to
Figure BDA0002748023940000031
Principle, identifying problematic data;
c) balance measurement can be measured as follows:
and determining whether the related remote signaling and remote measuring are correct according to the balance state.
The bus active power imbalance criterion is as follows:
Figure BDA0002748023940000041
in the formula: pjActive injection of a branch j connected with a bus i; epsilonPbusA bus active unbalance threshold value is obtained;
the bus reactive unbalance criterion is as follows:
Figure BDA0002748023940000042
in the formula: qjActive injection of a branch j connected with a bus i; epsilonQbusA bus active unbalance threshold value is obtained;
line active power imbalance criterion:
|Pi+Pj-Ploss|>εPine
in the formula: pi、PjRespectively the active power flowing into the line at the i end and the j end of the line ij; plossIs the active loss of line ij; epsilonPlineA threshold value of the line active imbalance is set;
line reactive imbalance criterion:
|Qi+Qj-Qloss|>εQine
in the formula: qi、QjRespectively the active power flowing into the line at the i end and the j end of the line ij; plossIs the active loss of line ij; epsilonPlineA threshold value of the line active imbalance is set;
the criterion of the transformer active imbalance is as follows:
Figure BDA0002748023940000043
in the formula: pjInputting the active power of the transformer into the coil j of the transformer i; plossActive loss for volume j; epsilonPtranThe value is the active unbalance threshold value of the transformer;
transformer reactive imbalance criterion:
Figure BDA0002748023940000044
in the formula: qjInputting the active power of the transformer into the coil j of the transformer i; qlossActive loss for volume j; epsilonQtranThe value is the active unbalance threshold value of the transformer;
PQI mismatch criterion:
|Ical-Iscada|>εI
in the formula: i iscalThe current value is calculated according to the active power and the reactive power of the equipment and the voltage of the connected bus; i isscadaIs the measured current value; epsilonIThe PQI does not match the threshold value.
Further, the step-quieting further comprises the following steps of evaluating the data quality of the line and the transformer equipment:
firstly, evaluating the active power of the line:
Figure BDA0002748023940000051
in the formula: delta SiScoring a change value for the active power measurement of the i end of the line; if the i end of the line is connected with a bus k, the following steps are provided:
Figure BDA0002748023940000052
Figure BDA0002748023940000053
d) if the bus k has active balance, the active measurement of the i end of the connected line is qualified, otherwise, the I end of the connected line is unqualified;
e) if the active power of the line is balanced, the active power measurement of the i end is qualified, otherwise, the active power measurement of the i end is unqualified;
f) if the PQIs at the i end of the line are matched, the active power measurement of the local end is qualified, otherwise, the active power measurement of the local end is unqualified;
evaluating the reactive power of the circuit:
Figure BDA0002748023940000054
in the formula: delta SiScoring a variation value for the i-end reactive power measurement of the line; if the i end of the line is connected with a bus k, the following steps are provided:
Figure BDA0002748023940000055
Figure BDA0002748023940000061
g) if the bus k is in reactive balance, the reactive measurement of the i end of the connected line is qualified, otherwise, the bus k is unqualified;
h) if the line is in reactive balance, the reactive measurement of the i end is qualified, otherwise, the reactive measurement of the i end is unqualified;
i) if the PQIs at the i end of the line are matched, the reactive power measurement at the home end is qualified, otherwise, the reactive power measurement is unqualified.
Thirdly, evaluating the power of the transformer:
Figure BDA0002748023940000062
in the formula: delta SiScoring a change value for the active measurement of transformer coil i; with a transformerThe coil i belongs to the transformer j and is connected with the bus k, and comprises:
Figure BDA0002748023940000063
Figure BDA0002748023940000064
j) if the bus k is in active balance, the active measurement of the connected transformer i is qualified, otherwise, the active measurement of the connected transformer i is unqualified;
k) if the active power of the transformer j is balanced, the active power measurement of the transformer i is qualified, otherwise, the active power measurement of the transformer i is unqualified;
l) if the PQIs of the transformer coil i are matched, the active power measurement of the transformer is qualified, otherwise, the active power measurement of the transformer is unqualified.
And fourthly, transformer reactive power measurement evaluation:
Figure BDA0002748023940000065
in the formula: delta SiScoring a change value for the reactive power measurement of transformer coil i; if the transformer i belongs to the transformer j and is connected with the bus k, the following steps are included:
Figure BDA0002748023940000066
Figure BDA0002748023940000067
m) if the bus k is in reactive balance, the reactive measurement of the connected transformer i is qualified, otherwise, the connected transformer i is unqualified;
n) if the transformer j is in reactive balance, the reactive measurement of the transformer i is qualified, otherwise, the transformer i is unqualified;
o) if the PQIs of the transformer i are matched, the power measurement of the transformer is qualified, otherwise, the power measurement of the transformer is unqualified.
The invention has the advantages and beneficial effects that:
the invention relates to a system for effectively improving the data quality of a power system, which comprises a preposed checking module, a model checking module, a data checking module and a graph checking module; the preposed data quality problem is found through the preposed checking module, so that the correctness of the preposed link and the collection is improved; problems in the model are found through the model checking module, so that the correctness of the model is improved; the data quality problem in the data processing process is found through the data checking module, so that the correctness of the processed data is improved; the data quality problem on the plant station diagram is found through the graph checking module, so that the data accuracy of interface display is improved. The method can find out problematic data in the power system, and can effectively improve the data quality of the power system after rectification, thereby ensuring that the operating condition of the power grid can be efficiently, accurately and comprehensively tracked and known by an information power system dispatching center.
Drawings
FIG. 1 is a block diagram of a system for effectively improving data quality of an electrical power system according to the present invention;
fig. 2 is a flowchart of a method for effectively improving data quality of an electric power system according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the system for improving data quality of an electric power system according to the present invention mainly includes the following components: the system comprises a preposed checking module 1, a model checking module 2, a data checking module 3 and a graph checking module 4. The preposed checking module is mainly used for link checking and preposed non-actual measurement checking; the model checking module is used for parameter checking, model checking and topology checking; the data checking module is mainly used for quality code checking, unbalance checking and network topology analysis checking; the graph checking module is used for checking whether the plant diagram is missing or not according to the plant table record, checking whether the plant ID of the plant diagram is correct or not, checking whether the ID of each device in the plant diagram is missing or not, checking whether the device ID can be found or not, and checking whether the device ID belongs to the plant.
The data checking module also has the following other checking functions.
As shown in fig. 2, the method for improving data quality of a power system according to the present invention includes the following steps:
checking a link: the preposed checking module checks the preposed link state to find the link with the problem and ensure that the preposed link can be normally used;
the pre-placed non-actual measurement inspection: the prepositive checking module checks whether the data in the acquisition point list is acquired or not, and counts the abnormal uploading data with a point number, so that the correction is convenient;
checking the parameters: the model checking module checks whether the parameter models of the line, the transformer and the winding, the gear parameter and the series-parallel compensation equipment are correct or not;
fourth, model checking: the model checking module checks the corresponding relation between the line segment of the line and the end point of the line segment and checks the corresponding relation between the transformer and the transformer winding; checking the winding type of the transformer, and whether the double winding or the triple winding is correct; checking whether the winding type of the transformer winding is correct, whether the high, medium and low voltage sides are maintained accurately, and whether the voltage grade of each winding is accurate;
fifthly, topology verification: the model checking module checks whether the connection point numbers of all the devices are missing or not and whether the voltage levels of the devices are correct or not;
sixthly, quality code verification: the data checking module finds all the telemetering remote signaling points which are not acquired in the front and sets the quality codes of the telemetering remote signaling points as non-actual measurement; finding out all remote measuring points which are not changed for a long time, and setting the quality codes of the remote measuring points to be unchanged; finding out all suspicious remote-measuring remote-signalling points and setting the quality codes as suspicious;
jerkiness verification: the data checking module judges the unbalance amount of the bus, the line and the transformer, and if the unbalance amount occurs, the problem is checked on the related data;
and checking network topology analysis: the data checking module mainly relates to all the equipment tables in the model base, and mainly completes the work of calculating the communication relation among the equipment according to the information of the connecting point number field in the equipment table, calculating the topology coloring of the equipment, wherein the equipment with the same coloring value is in the same island, namely all the equipment with the same island number is communicated; normally, the whole power grid model should be connected together, and in a few cases, an islanding phenomenon occurs, that is, the coloring value of most of equipment should be 1; judging the topological coloring value of the full model, if a larger coloring value appears, considering that a model error or a remote signaling error appears, and searching equipment with problems at the boundary of the island;
checking the self-supporting pattern: and the graph checking module checks whether the plant diagram is missing or not according to the plant table record, checks whether the plant ID of the plant diagram is correct or not, checks whether the ID of each device in the plant diagram is missing or not, and whether the device ID can be found or not, and whether the device ID belongs to the plant.
The step sixteenth is to classify the quality code of the reference image into the following suspicious conditions:
a) suspicious measurement corresponding to remote signaling and remote measurement:
the method comprises the steps that telemetering of a bus, a transformer winding, a load, a generator and an alternating current line segment end point and the corresponding state of an associated breaker are identified, and key identification is carried out when remote signaling is carried out to indicate that telemetering is carried out to have a value or remote signaling is carried out to indicate that telemetering is carried out to have no value;
b) active, reactive and current corresponding suspicious measurement:
according to
Figure BDA0002748023940000091
Principle, identifying problematic data;
c) balance measurement can be measured as follows:
and determining whether the related remote signaling and remote measuring are correct according to the balance state.
In the step-quietness: the bus active power imbalance criterion is as follows:
Figure BDA0002748023940000092
in the formula: pjActive injection of a branch j connected with a bus i; epsilonPbusA bus active unbalance threshold value is obtained;
the bus reactive unbalance criterion is as follows:
Figure BDA0002748023940000093
in the formula: qjActive injection of a branch j connected with a bus i; epsilonQbusA bus active unbalance threshold value is obtained;
line active power imbalance criterion:
|Pi+Pj-Ploss|>εPine
in the formula: pi、PjRespectively the active power flowing into the line at the i end and the j end of the line ij; plossIs the active loss of line ij; epsilonPlineA threshold value of the line active imbalance is set;
line reactive imbalance criterion:
|Qi+Qj-Qloss|>εQine
in the formula: qi、QjRespectively the active power flowing into the line at the i end and the j end of the line ij; plossIs the active loss of line ij; epsilonPlineA threshold value of the line active imbalance is set;
the criterion of the transformer active imbalance is as follows:
Figure BDA0002748023940000101
in the formula: pjInputting the active power of the transformer into the coil j of the transformer i; plossActive loss for volume j; epsilonPtranThe value is the active unbalance threshold value of the transformer;
transformer reactive imbalance criterion:
Figure BDA0002748023940000102
in the formula: qjInputting the active power of the transformer into the coil j of the transformer i; qlossActive loss for volume j; epsilonQtranFor transformersA value of the active imbalance threshold;
PQI mismatch criterion:
|Ical-Iscada|>εI
in the formula: i iscalThe current value is calculated according to the active power and the reactive power of the equipment and the voltage of the connected bus; i isscadaIs the measured current value; epsilonIThe PQI does not match the threshold value.
The step-and-night method further comprises the following steps of evaluating the data quality of lines and transformer equipment:
firstly, evaluating the active power of the line:
Figure BDA0002748023940000111
in the formula: delta SiScoring a change value for the active power measurement of the i end of the line; if the i end of the line is connected with a bus k, the following steps are provided:
Figure BDA0002748023940000112
Figure BDA0002748023940000113
d) if the bus k has active balance, the active measurement of the i end of the connected line is qualified, otherwise, the I end of the connected line is unqualified;
e) if the active power of the line is balanced, the active power measurement of the i end is qualified, otherwise, the active power measurement of the i end is unqualified;
f) if the PQIs at the i end of the line are matched, the active power measurement of the local end is qualified, otherwise, the active power measurement of the local end is unqualified;
evaluating the reactive power of the circuit:
Figure BDA0002748023940000114
in the formula: delta SiScoring a variation value for the i-end reactive power measurement of the line; if the i end of the line is connected with a bus k, the following steps are provided:
Figure BDA0002748023940000115
Figure BDA0002748023940000116
g) if the bus k is in reactive balance, the reactive measurement of the i end of the connected line is qualified, otherwise, the bus k is unqualified;
h) if the line is in reactive balance, the reactive measurement of the i end is qualified, otherwise, the reactive measurement of the i end is unqualified;
i) if the PQIs at the i end of the line are matched, the reactive power measurement at the home end is qualified, otherwise, the reactive power measurement is unqualified.
Thirdly, evaluating the power of the transformer:
Figure BDA0002748023940000117
in the formula: delta SiScoring a change value for the active measurement of transformer coil i; if a transformer coil i belongs to a transformer j and is connected with a bus k, the following steps are performed:
Figure BDA0002748023940000121
Figure BDA0002748023940000122
j) if the bus k is in active balance, the active measurement of the connected transformer i is qualified, otherwise, the active measurement of the connected transformer i is unqualified;
k) if the active power of the transformer j is balanced, the active power measurement of the transformer i is qualified, otherwise, the active power measurement of the transformer i is unqualified;
l) if the PQIs of the transformer coil i are matched, the active power measurement of the transformer is qualified, otherwise, the active power measurement of the transformer is unqualified.
And fourthly, transformer reactive power measurement evaluation:
Figure BDA0002748023940000123
in the formula: delta SiScoring a change value for the reactive power measurement of transformer coil i; if the transformer i belongs to the transformer j and is connected with the bus k, the following steps are included:
Figure BDA0002748023940000124
Figure BDA0002748023940000125
m) if the bus k is in reactive balance, the reactive measurement of the connected transformer i is qualified, otherwise, the connected transformer i is unqualified;
n) if the transformer j is in reactive balance, the reactive measurement of the transformer i is qualified, otherwise, the transformer i is unqualified;
o) if the PQIs of the transformer i are matched, the power measurement of the transformer is qualified, otherwise, the power measurement of the transformer is unqualified.
The step-quietness also includes other checks:
in order to improve data quality, some measurement points which are not collected or are not collected can be solved by making a formula, wherein the formula can comprise program automatic maintenance and manual maintenance. If the calculation method of the measurement is regularly circulated, the calculation method can be realized by a program, such as logic relation between pqi; if there is no regularity, then the formula needs to be maintained manually. If the data of the end point of the line segment on one side of the line has the data quality problem which is better than the step, and the opposite side is normal, the data value can be replaced by the opposite side, namely the value of the side is equal to the data value of the opposite side and is inverted. And searching all blocked remote-measuring remote-signalling points in the system to ensure whether the points should be blocked, and necessarily manually setting a reasonable remote-measuring remote-signalling value while blocking. When the telemetering program writes the library, the program adds a jump-preventing function to prevent the telemetering data from jumping; and adding a reasonable upper and lower limit function to prevent unreasonable larger or smaller values of data.

Claims (6)

1. A system for effectively improving data quality of a power system is characterized in that: mainly comprises the following components: the device comprises a preposed checking module (1), a model checking module (2), a data checking module (3) and a graph checking module (4); the preposed checking module is mainly used for link checking and preposed non-actual measurement checking; the model checking module is used for parameter checking, model checking and topology checking; the data checking module is mainly used for quality code checking, unbalance checking and network topology analysis checking; the graph checking module is used for checking whether the plant diagram is missing or not according to the plant table record, checking whether the plant ID of the plant diagram is correct or not, checking whether the ID of each device in the plant diagram is missing or not, checking whether the device ID can be found or not, and checking whether the device ID belongs to the plant.
2. The system for effectively improving the data quality of the power system according to claim 1, wherein: the data checking module also has other checking functions.
3. The method of claim 2, comprising the steps of:
checking a link: the preposed checking module checks the preposed link state to find the link with the problem and ensure that the preposed link can be normally used;
the pre-placed non-actual measurement inspection: the prepositive checking module checks whether the data in the acquisition point list is acquired or not, and counts the data which has a point number but is abnormally sent;
checking the parameters: the model checking module checks whether the parameter models of the line, the transformer and the winding, the gear parameter and the series-parallel compensation equipment are correct or not;
fourth, model checking: the model checking module checks the corresponding relation between the line segment of the line and the end point of the line segment and checks the corresponding relation between the transformer and the transformer winding; checking the winding type of the transformer, and whether the double winding or the triple winding is correct; checking whether the winding type of the transformer winding is correct, whether the high, medium and low voltage sides are maintained accurately, and whether the voltage grade of each winding is accurate;
fifthly, topology verification: the model checking module checks whether the connection point numbers of all the devices are missing or not and whether the voltage levels of the devices are correct or not;
sixthly, quality code verification: the data checking module finds all the telemetering remote signaling points which are not acquired in the front and sets the quality codes of the telemetering remote signaling points as non-actual measurement; finding out all remote measuring points which are not changed for a long time, and setting the quality codes of the remote measuring points to be unchanged; finding out all suspicious remote-measuring remote-signalling points and setting the quality codes as suspicious;
jerkiness verification: the data checking module judges the unbalance amount of the bus, the line and the transformer, and if the unbalance amount occurs, the problem is checked on the related data;
and checking network topology analysis: the data checking module calculates the communication relation among the devices according to the information of the connection point number field in the device table, calculates the topology coloring of the devices, and the devices with the same coloring value are in the same island, namely all the devices with the same island number are communicated;
checking the self-supporting pattern: and the graph checking module checks whether the plant diagram is missing or not according to the plant table record, checks whether the plant ID of the plant diagram is correct or not, checks whether the ID of each device in the plant diagram is missing or not, and whether the device ID can be found or not, and whether the device ID belongs to the plant.
4. A method of upgrading a system for efficiently upgrading data quality of a power system according to claim 3, characterized by:
the step sixteenth is to classify the quality code of the reference image into the following suspicious conditions:
a) suspicious measurement corresponding to remote signaling and remote measurement:
the method comprises the steps that telemetering of a bus, a transformer winding, a load, a generator and an alternating current line segment end point and the corresponding state of an associated breaker are identified, and key identification is carried out when remote signaling is carried out to indicate that telemetering is carried out to have a value or remote signaling is carried out to indicate that telemetering is carried out to have no value;
b) active, reactive and current corresponding suspicious measurement:
according to
Figure FDA0002748023930000021
Principle, identifying problematic data;
c) balance measurement can be measured as follows:
and determining whether the related remote signaling and remote measuring are correct according to the balance state.
5. A method for upgrading a system for efficiently upgrading data quality of a power system according to claim 3, characterized in that in the step-quieting:
the bus active power imbalance criterion is as follows:
Figure FDA0002748023930000031
in the formula: pjActive injection of a branch j connected with a bus i; epsilonPbusA bus active unbalance threshold value is obtained;
the bus reactive unbalance criterion is as follows:
Figure FDA0002748023930000032
in the formula: qjActive injection of a branch j connected with a bus i; epsilonQbusA bus active unbalance threshold value is obtained;
line active power imbalance criterion:
|Pi+Pj-Ploss|>εPine
in the formula: pi、PjRespectively the active power flowing into the line at the i end and the j end of the line ij; plossIs the active loss of line ij; epsilonPlineA threshold value of the line active imbalance is set;
line reactive imbalance criterion:
|Qi+Qj-Qloss|>εQine
in the formula: qi、QjAre respectively a line iThe i end and the j end of j flow into the active power of the line; plossIs the active loss of line ij; epsilonPlineA threshold value of the line active imbalance is set;
the criterion of the transformer active imbalance is as follows:
Figure FDA0002748023930000033
in the formula: pjInputting the active power of the transformer into the coil j of the transformer i; plossActive loss for volume j; epsilonPtranThe value is the active unbalance threshold value of the transformer;
transformer reactive imbalance criterion:
Figure FDA0002748023930000041
in the formula: qjInputting the active power of the transformer into the coil j of the transformer i; qlossActive loss for volume j; epsilonQtranThe value is the active unbalance threshold value of the transformer;
PQI mismatch criterion:
|Ical-Iscada|>εI
in the formula: i iscalThe current value is calculated according to the active power and the reactive power of the equipment and the voltage of the connected bus; i isscadaIs the measured current value; epsilonIThe PQI does not match the threshold value.
6. The method of claim 3, wherein the step of re-rating further comprises evaluating data quality of the line and transformer equipment:
firstly, evaluating the active power of the line:
Figure FDA0002748023930000042
in the formula: delta SiScoring a change value for the active power measurement of the i end of the line; if the i end of the line is connected with a bus k, the following steps are provided:
Figure FDA0002748023930000043
Figure FDA0002748023930000044
d) if the bus k has active balance, the active measurement of the i end of the connected line is qualified, otherwise, the I end of the connected line is unqualified;
e) if the active power of the line is balanced, the active power measurement of the i end is qualified, otherwise, the active power measurement of the i end is unqualified;
f) if the PQIs at the i end of the line are matched, the active power measurement of the local end is qualified, otherwise, the active power measurement of the local end is unqualified;
evaluating the reactive power of the circuit:
Figure FDA0002748023930000051
in the formula: delta SiScoring a variation value for the i-end reactive power measurement of the line; if the i end of the line is connected with a bus k, the following steps are provided:
Figure FDA0002748023930000052
Figure FDA0002748023930000053
g) if the bus k is in reactive balance, the reactive measurement of the i end of the connected line is qualified, otherwise, the bus k is unqualified;
h) if the line is in reactive balance, the reactive measurement of the i end is qualified, otherwise, the reactive measurement of the i end is unqualified;
i) if the PQIs at the i end of the line are matched, the reactive power measurement at the home end is qualified, otherwise, the reactive power measurement is unqualified.
Thirdly, evaluating the power of the transformer:
Figure FDA0002748023930000054
in the formula: delta SiScoring a change value for the active measurement of transformer coil i; if a transformer coil i belongs to a transformer j and is connected with a bus k, the following steps are performed:
Figure FDA0002748023930000055
Figure FDA0002748023930000056
j) if the bus k is in active balance, the active measurement of the connected transformer i is qualified, otherwise, the active measurement of the connected transformer i is unqualified;
k) if the active power of the transformer j is balanced, the active power measurement of the transformer i is qualified, otherwise, the active power measurement of the transformer i is unqualified;
l) if the PQIs of the transformer coil i are matched, the active power measurement of the transformer is qualified, otherwise, the active power measurement of the transformer is unqualified.
And fourthly, transformer reactive power measurement evaluation:
Figure FDA0002748023930000057
in the formula: delta SiScoring a change value for the reactive power measurement of transformer coil i; if the transformer i belongs to the transformer j and is connected with the bus k, the following steps are included:
Figure FDA0002748023930000061
Figure FDA0002748023930000062
m) if the bus k is in reactive balance, the reactive measurement of the connected transformer i is qualified, otherwise, the connected transformer i is unqualified;
n) if the transformer j is in reactive balance, the reactive measurement of the transformer i is qualified, otherwise, the transformer i is unqualified;
o) if the PQIs of the transformer i are matched, the power measurement of the transformer is qualified, otherwise, the power measurement of the transformer is unqualified.
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