CN110970995A - Transmission type management and control system for key indexes of safe operation of power grid - Google Patents
Transmission type management and control system for key indexes of safe operation of power grid Download PDFInfo
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Abstract
The invention discloses a power grid safe operation key index penetration type management and control system which mainly comprises an upper computer, a shared database, monitoring equipment, a monitoring information receiving system, an equipment power failure judging module, a planned power failure evaluating module, an operation normalization evaluating module, an automatic information accuracy evaluating module, a protection action accuracy evaluating module and a voltage qualification rate evaluating module. The equipment power loss evaluation module judges whether the monitoring equipment is power loss and whether the monitoring signal is true or false according to the monitoring signal. If the monitoring signal is true, the equipment power-loss evaluation module judges whether the monitoring signal comprises an accident trip signal and the signal is true or false. The planned power failure evaluation module inquires whether a power failure overhaul ticket of the monitoring equipment at the time t exists in a planned power failure database; and the operation normative evaluation module searches whether a degree instruction ticket of the equipment at the time t exists in an operation ticket database. The invention is based on the mutual exclusion relationship among various indexes, mutual authentication and mutual constraint, and eliminates the space for data counterfeiting.
Description
Technical Field
The invention relates to the field of power grid dispatching control, in particular to a penetration type management and control system for key indexes of safe operation of a power grid.
Background
The key operation indexes of the power grid safety relate to the specialties of scheduling control (regulation for short), planning, system, monitoring, relay protection (relay protection for short), automation and the like. The existing system and method respectively and independently evaluate the indexes and have the problems of low automation degree, low efficiency, difficulty in identifying and finding fake behaviors of an evaluated unit and the like.
Disclosure of Invention
The present invention is directed to solving the problems of the prior art.
The technical scheme adopted for achieving the purpose of the invention is that the power grid safe operation key index penetration type management and control system mainly comprises an upper computer, a shared database, monitoring equipment, an equipment power failure judgment module, a monitoring information receiving system, a planned power failure evaluation module, an operation normalization evaluation module, an automatic information accuracy evaluation module, a protection action accuracy evaluation module and a voltage qualification rate evaluation module.
The upper computer is provided with a shared database.
The upper computer stores data of a monitoring information receiving system, an equipment power failure judging module, a monitoring information evaluating module, a planned power failure evaluating module, an operation normalization evaluating module, an automatic information accuracy evaluating module, a protection action accuracy evaluating module and a voltage qualification rate evaluating module.
The shared database stores, adds or modifies integrated scheduling instruction tickets and power failure overhaul tickets of a plurality of monitoring devices.
The shared database comprises a monitoring equipment operation standard rate report, a planned outage rate report, an automation information accuracy rate report, a monitoring information accuracy rate report, a voltage qualification rate report and a protection action accuracy rate report. And the monitoring equipment sends monitoring signals and state information to a monitoring information receiving system.
And based on the planned outage rate report, the upper computer judges the power outage planning of the monitoring equipment.
And based on the monitoring signal accuracy report, the upper computer judges the reliability of the monitoring information receiving system.
The monitoring equipment is a transformer substation.
And the monitoring information receiving system sends the received monitoring signal to the equipment power-off evaluation module.
And the equipment power-off evaluation module judges whether the monitoring equipment is powered off or not according to the monitoring signal.
The steps of judging whether the monitoring equipment loses power are as follows:
1) and the monitoring equipment sends a monitoring signal to the equipment power-loss evaluation module. The monitoring signals mainly comprise switch position separating signals and/or disconnecting link position separating signals, protection action signals and accident total signals.
2) If the monitoring signals received by the equipment power-off evaluation module at the same time are one switch separation signal and two disconnecting link separation signals, the equipment power-off evaluation module judges that the monitoring equipment is powered off.
If the power is lost, the equipment power loss evaluation module judges the authenticity of the monitoring signal according to the state information of the monitoring equipment, the monitoring equipment records the protection action times of the protection action signal and sends the protection action times to the protection action accuracy evaluation module, and the monitoring equipment monitors the voltage signal of each voltage point and sends the voltage signal to the voltage qualification rate evaluation module.
And if the monitoring signal is true, the equipment power-loss evaluation module judges whether the monitoring signal comprises an accident trip signal. And if the accident tripping signal is included, the equipment power-loss evaluation module judges whether the accident tripping signal is true according to the monitoring equipment state information. And if the current is true, judging the power loss reason of the monitoring equipment as accident tripping.
The accident tripping signal comprises a protection action signal and an accident total signal.
If the monitoring signal is true and the monitoring signal does not include the accident trip signal, the equipment power-off evaluation module calculates the power-off time t of the monitoring equipment according to the sending time of the monitoring signal and sends the power-off time t of the monitoring equipment to the planned power-off evaluation module and the operation normative evaluation module respectively.
Time t includes year, month, day, hour, minute, and/or second. .
And the equipment power loss evaluation module calculates the accuracy of monitoring information according to the truth of the monitoring signal.
The monitoring information accuracy rate is (total number of monitoring signals-number of erroneous monitoring signals)/total number of monitoring signals.
And the planned power failure evaluation module inquires whether a power failure overhaul ticket of the monitoring equipment at the time t exists in a planned power failure database.
If the power failure maintenance ticket exists, the power failure equipment is judged to be scheduled power failure, and the scheduled power failure index does not decrease.
And the planned power failure evaluation module calculates the planned power failure rate based on the power failure maintenance ticket.
And the planned outage rate is the planned outage times/the total times of power loss of the equipment.
And the operation normative evaluation module searches whether a degree instruction ticket of the equipment at the time t exists in an operation ticket database. If the dispatching instruction ticket exists, the power-off equipment is judged to be in normal operation, and if the dispatching instruction ticket does not exist, the power-off equipment is judged to be in ticket-free operation.
And the operation normative evaluation module calculates an operation normative rate based on the scheduling instruction ticket.
And the operation specification rate is the normal power failure times/the total power failure times of the equipment.
Based on the accident trip signal and the monitoring signal, the automation information accuracy rate evaluation module judges the automation information accuracy rate. The automatic information mainly comprises remote measuring information such as switch deflection information, power, voltage, current, frequency and the like and protection action and accident total information.
The automation information accuracy rate is (total number of automation system information-number of wrong automation information)/total number of automation system information.
Based on the protection action signal, the protection action accuracy evaluation module judges whether the protection action is correct or not and calculates the protection action accuracy.
The method for judging whether the protection action is correct comprises the following steps:
1) accident data of the power loss point is obtained, and the accident data mainly comprises accident tripping signals, current, impedance and/or voltage.
2) And comparing accident data of the power failure point with the protection setting calculation fixed value, if the accident data of the power failure point are the same as the protection setting calculation fixed value, the protection action is correct, and if the accident data of the power failure point are different from the protection setting calculation fixed value, the protection action is wrong.
The protection action accuracy rate is the number of protection correct actions/the total number of protection actions.
Based on the voltage signal, the voltage qualification rate evaluation module judges the voltage qualification rate of the whole network.
The voltage qualification rate of the whole network is equal to the qualified point number of the voltage/the total point number of the voltage.
The technical effect of the present invention is undoubted. The invention is based on the mutual exclusion relationship among various indexes, mutual authentication and mutual constraint, eliminates the space of data counterfeiting, and ensures that the inside of the evaluated unit has to give a real situation based on the constraint relationship, thereby realizing objective and accurate evaluation.
Drawings
FIG. 1 is a logic flow diagram;
FIG. 2 is a schematic diagram of an unplanned power outage and operation behavior evaluation mechanism;
FIG. 3 is a monitoring information evaluation verification mechanism;
FIG. 4 is a relay protection correct operation evaluation mechanism;
FIG. 5 is an automated professional evaluation mechanism;
FIG. 6 is a through evaluation main page;
FIG. 7 is a signal quality evaluation page;
FIG. 8 is a signal evaluation and evidence material upload page thereof;
FIG. 9 is a crash signal evaluation and declaration page;
FIG. 10 is an automated information correctness report;
FIG. 11 is a monitoring information evaluation and declaration page under accident conditions;
FIG. 12 is a statistical report of accident tripping monitoring information;
fig. 13 is a relay protection correct action rate evaluation page;
FIG. 14 is a statistical report of the correct action rate of relay protection;
FIG. 15 is a planned outage rate evaluation page;
FIG. 16 is a projected outage rate report;
FIG. 17 is an operating specification rate evaluation page;
FIG. 18 is an operation specification rate report.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
referring to fig. 1 to 18, a penetration type management and control system for key indexes of safe operation of a power grid mainly comprises an upper computer, a shared database, monitoring equipment, a monitoring information receiving system, an equipment power failure judging module, a planned power failure evaluating module, an operation normalization evaluating module, an automatic information accuracy evaluating module, a protection action accuracy evaluating module and a voltage qualification rate evaluating module.
The upper computer is provided with a shared database.
The upper computer stores data of a monitoring information receiving system, an equipment power failure judging module, a monitoring information evaluating module, a planned power failure evaluating module, an operation normalization evaluating module, an automatic information accuracy evaluating module, a protection action accuracy evaluating module and a voltage qualification rate evaluating module.
The shared database stores, adds or modifies integrated scheduling instruction tickets and power failure overhaul tickets of a plurality of monitoring devices.
The shared database comprises a monitoring equipment operation standard rate report, a planned outage rate report, an automation information accuracy rate report, a monitoring information accuracy rate report, a voltage qualification rate report and a protection action accuracy rate report.
The monitoring device operating specification rate report stores the monitoring device and the corresponding operating specification rate.
The planned outage rate report stores the monitoring devices and the corresponding planned outage rates.
Automated information accuracy report storage monitoring device and corresponding automated information accuracy. The automatic information mainly comprises remote measuring information such as switch deflection information, power, voltage, current, frequency and the like and protection action and accident total information. The automation information and the transformer substation monitoring information are overlapped in content, and an automation system is scheduled at a place where the automation information and the transformer substation monitoring information occur.
The monitoring information accuracy report stores monitoring devices and corresponding monitoring information accuracy.
The voltage qualification rate report stores the monitoring device and the corresponding voltage qualification rate.
The protection action accuracy report stores the monitoring device and the corresponding protection action accuracy.
And the monitoring equipment sends monitoring signals and state information to a monitoring information receiving system.
And based on the planned outage rate report, the upper computer judges the power outage planning of the monitoring equipment.
And based on the monitoring signal accuracy report, the upper computer judges the reliability of the monitoring information receiving system.
The monitoring equipment is a transformer substation.
And the monitoring information receiving system sends the received monitoring signal to the equipment power-off evaluation module.
And the equipment power-off evaluation module judges whether the monitoring equipment is powered off or not according to the monitoring signal.
The steps of judging whether the monitoring equipment loses power are as follows:
1) and the monitoring equipment sends a monitoring signal to the equipment power-loss evaluation module. The monitoring signals mainly comprise switch position separating signals and/or disconnecting link position separating signals, protection action signals and accident total signals.
2) If the monitoring signals received by the equipment power-off evaluation module at the same time are one switch separation signal and two disconnecting link separation signals, the equipment power-off evaluation module judges that the monitoring equipment is powered off.
If the power is lost, the equipment power loss evaluation module judges the authenticity of the monitoring signal according to the state information of the monitoring equipment, the monitoring equipment records the protection action times of the protection action signal and sends the protection action times to the protection action accuracy evaluation module, and the monitoring equipment monitors the voltage signal of each voltage point and sends the voltage signal to the voltage qualification rate evaluation module.
The following situations mainly exist in judging the authenticity of the monitoring signal:
I) there should be no current when the switch is open and if there is current at this time, the monitoring signal is false.
II) calculating the node current balance or the loop voltage balance, wherein if the node current balance or the loop voltage balance is balanced, the monitoring signal is true, and if the node current balance or the loop voltage balance is unbalanced, the monitoring signal is false.
And if the monitoring signal is true, the equipment power-loss evaluation module judges whether the monitoring signal comprises an accident trip signal. And if the accident tripping signal is included, the equipment power-loss evaluation module judges whether the accident tripping signal is true according to the monitoring equipment state information. And if the current is true, judging the power loss reason of the monitoring equipment as accident tripping.
The accident tripping signal comprises a protection action signal and an accident total signal.
Judging whether the accident trip signal is true: the comprehensive automatic judgment is carried out according to the switch displacement, the remote measurement and the occurrence time, for example: the accident tripping signal is generated, the switch is divided into bits, but the current voltage and the impedance are not suddenly changed, and the accident signal is false.
If the monitoring signal is true and the monitoring signal does not include the accident trip signal, the equipment power-off evaluation module calculates the power-off time t of the monitoring equipment according to the sending time of the monitoring signal and sends the power-off time t of the monitoring equipment to the planned power-off evaluation module and the operation normative evaluation module respectively.
Time t includes year, month, day, hour, minute, and/or second. .
And the equipment power loss evaluation module calculates the accuracy of monitoring information according to the truth of the monitoring signal.
The monitoring information accuracy rate is (total number of monitoring signals-number of erroneous monitoring signals)/total number of monitoring signals.
And the planned power failure evaluation module inquires whether a power failure overhaul ticket of the monitoring equipment at the time t exists in a planned power failure database.
If the power failure maintenance ticket exists, the power failure equipment is judged to be scheduled power failure, and the scheduled power failure index does not decrease.
And the planned power failure evaluation module calculates the planned power failure rate based on the power failure maintenance ticket.
And the planned outage rate is the planned outage times/the total times of power loss of the equipment.
And the operation normative evaluation module searches whether a degree instruction ticket of the equipment at the time t exists in an operation ticket database. If the dispatching instruction ticket exists, the power-off equipment is judged to be in normal operation, and if the dispatching instruction ticket does not exist, the power-off equipment is judged to be in ticket-free operation.
And the operation normative evaluation module calculates an operation normative rate based on the scheduling instruction ticket.
And the operation specification rate is the normal power failure times/the total power failure times of the equipment.
Based on the accident trip signal and the monitoring signal, the automation information accuracy rate evaluation module judges the automation information accuracy rate.
The automation information accuracy rate is (total number of automation system information-number of wrong automation information)/total number of automation system information.
Based on the protection action signal, the protection action accuracy evaluation module judges whether the protection action is correct or not and calculates the protection action accuracy.
The method for judging whether the protection action is correct comprises the following steps:
1) accident data of the power loss point is obtained, and the accident data mainly comprises accident tripping signals, current, impedance and/or voltage.
2) And comparing accident data of the power failure point with the protection setting calculation fixed value, if the accident data of the power failure point are the same as the protection setting calculation fixed value, the protection action is correct, and if the accident data of the power failure point are different from the protection setting calculation fixed value, the protection action is wrong.
The protection action accuracy rate is the number of protection correct actions/the total number of protection actions.
Based on the voltage signal, the voltage qualification rate evaluation module judges the voltage qualification rate of the whole network.
The voltage qualification rate of the whole network is equal to the qualified point number of the voltage/the total point number of the voltage.
Example 2:
a method for using a power grid to safely operate a key index penetration type management and control system mainly comprises the following steps:
1) and the monitoring equipment sends a monitoring signal to the monitoring information receiving system.
2) And after receiving the monitoring signal, the monitoring information receiving system sends the monitoring signal to the equipment power-off evaluation module.
3) And the equipment power loss evaluation module judges whether the monitoring equipment is powered down or not according to the monitoring signal. If the power is lost, the equipment power loss evaluation module further judges the authenticity of the monitoring signal.
The steps of judging whether the monitoring equipment loses power are as follows:
1) and the monitoring equipment sends a monitoring signal to the equipment power-loss evaluation module. The monitoring signals mainly comprise switch position-dividing signals and/or disconnecting link position-dividing signals.
2) If the monitoring signals received by the equipment power-loss evaluation module at the same time are a switch off-position signal and two disconnecting link off-position signals, the equipment power-loss evaluation module judges that the monitoring equipment loses power due to operation, and if only the switch off-position signals exist, the switch is judged to be switched off.
And if the monitoring signal is false, judging that the equipment is not powered off.
If the monitoring signal is true, further judging whether the monitoring signal comprises an accident tripping signal.
3) And if the switch position division signal accompanies the accident total protection action signal, judging the switch accident trip, and at the moment, further judging whether the protection action is correct or not according to a protection setting fixed value and a strategy.
4) If the monitoring signal is true and the monitoring signal does not include the accident trip signal, the equipment power-off evaluation module calculates the power-off time t of the monitoring equipment according to the sending time of the monitoring signal and sends the power-off time t of the monitoring equipment to the planned power-off evaluation module and the operation normative evaluation module respectively.
And the planned power failure evaluation module inquires whether a power failure overhaul ticket of the monitoring equipment at the time t exists in a planned power failure database.
If the power failure maintenance ticket exists, the power failure equipment is judged to be scheduled power failure, and the scheduled power failure index does not decrease.
And the planned power failure evaluation module calculates the planned power failure rate based on the power failure maintenance ticket.
And the operation normative evaluation module searches whether a degree instruction ticket of the equipment at the time t exists in an operation ticket database. If the dispatching instruction ticket exists, the power-off equipment is judged to be in normal operation, and if the dispatching instruction ticket does not exist, the power-off equipment is judged to be in ticket-free operation.
And the operation normative evaluation module calculates an operation normative rate based on the scheduling instruction ticket.
Claims (10)
1. The penetration type management and control system for key indexes of safe operation of the power grid is characterized by mainly comprising an upper computer, a shared database, monitoring equipment, a monitoring information receiving system, an equipment power failure judging module, a planned power failure evaluating module, an operation normalization evaluating module, an automatic information accuracy evaluating module, a protection action accuracy evaluating module and a voltage qualification rate evaluating module.
The upper computer is provided with a shared database;
the upper computer stores data of a monitoring information receiving system, an equipment power failure judging module, a monitoring information evaluating module, a planned power failure evaluating module, an operation normalization evaluating module, an automation information accuracy evaluating module, a protection action accuracy evaluating module and a voltage qualification rate evaluating module;
the shared database stores, adds or modifies integrated scheduling instruction tickets and power failure overhaul tickets of a plurality of monitoring devices;
the monitoring equipment sends monitoring signals and state information to a monitoring information receiving system;
the monitoring information receiving system sends the received monitoring signal to the equipment power-off evaluation module;
the equipment power loss evaluation module judges whether the monitoring equipment is powered down or not according to the monitoring signal;
if the power is lost, the equipment power loss evaluation module judges the authenticity of the monitoring signal according to the state information of the monitoring equipment; the monitoring equipment records the protection action signal and the protection action times and sends the protection action signal and the protection action times to the protection action accuracy evaluation module; monitoring voltage signals of all voltage points by monitoring equipment, and sending the voltage signals to a voltage qualification rate evaluation module;
if the monitoring signal is true, the equipment power-loss evaluation module judges whether the monitoring signal comprises an accident trip signal; if the accident tripping signal is included, the equipment power-loss evaluation module judges whether the accident tripping signal is true according to the monitoring equipment state information; if the current failure reason is true, judging the power failure reason of the monitoring equipment as accident tripping;
if the monitoring signal is true and does not include the accident trip signal, the equipment power-off evaluation module calculates the power-off time t of the monitoring equipment according to the sending time of the monitoring signal and sends the power-off time t of the monitoring equipment to the planned power-off evaluation module and the operation normative evaluation module respectively;
the equipment power loss evaluation module calculates the accuracy rate of monitoring information according to the truth and the false of the monitoring signal;
the planned power failure evaluation module inquires whether a power failure overhaul ticket of the monitoring equipment at the time t exists in a planned power failure database;
if the power failure maintenance ticket exists, judging that the power failure equipment is scheduled power failure, and the scheduled power failure index does not decrease;
the planned power failure evaluation module calculates a planned power failure rate based on the power failure overhaul ticket;
an operation normalization evaluation module searches whether a degree instruction ticket of the equipment at t time exists in an operation ticket database; if the dispatching instruction ticket exists, judging that the power-off equipment is in normal operation, and if the dispatching instruction ticket does not exist, judging that the power-off equipment is in ticket-free operation;
the operation normative evaluation module calculates an operation normative rate based on the scheduling instruction ticket;
based on the accident trip signal and the monitoring signal, the automatic information accuracy rate evaluation module judges the accuracy rate of the automatic signal; the automatic information mainly comprises remote measuring information such as switch deflection information, power, voltage, current, frequency and the like and protection action and accident total information;
judging whether the protection action is correct or not by a protection action correct rate evaluation module based on the protection action signal, and calculating the protection action correct rate;
based on the voltage signal, the voltage qualification rate evaluation module judges the voltage qualification rate of the whole network.
2. The grid safety operation key index penetration type management and control system according to claim 1, characterized in that: the monitoring equipment is a transformer substation.
3. The grid safety operation key index penetration type management and control system according to claim 1 or 2, characterized in that: the steps of judging whether the monitoring equipment loses power are as follows:
1) the monitoring equipment sends a monitoring signal to the equipment power-loss evaluation module; the monitoring signals mainly comprise switch position separating signals and/or disconnecting link position separating signals, protection action signals and accident total signals;
2) if the monitoring signals received by the equipment power-off evaluation module at the same time are one switch separation signal and two disconnecting link separation signals, the equipment power-off evaluation module judges that the monitoring equipment is powered off.
4. The grid safety operation key index penetration type management and control system according to claim 1, characterized in that: time t includes year, month, day, hour, minute, and/or second. .
5. The grid safety operation key index penetration type management and control system according to claim 1, characterized in that: the shared database comprises a monitoring equipment operation standard rate report, a planned outage rate report, an automation information accuracy rate report, a monitoring information accuracy rate report, a voltage qualification rate report and a protection action accuracy rate report.
6. The grid safe operation key index penetration type control system according to claim 1, wherein the upper computer judges the power failure planning of the monitoring device based on a planned power failure rate report.
7. The grid safety operation key index penetration type management and control system according to claim 1, characterized in that: and based on the monitoring signal accuracy report, the upper computer judges the reliability of the monitoring information receiving system.
8. The grid safety operation key index penetration type management and control system according to claim 1, characterized in that: the monitoring information accuracy rate is (the total number of the monitoring signals-the number of the error monitoring signals)/the total number of the monitoring signals;
the automation information accuracy rate is (total number of automation system information-number of wrong automation information)/total number of automation system information;
the planned outage rate is the planned outage times/the total times of power loss of the equipment;
the operation standard rate is the normal power failure times/the total power failure times of the equipment;
the protection action correct rate is the protection correct action times/protection action total times;
the voltage qualification rate of the whole network is equal to the qualified point number of the voltage/the total point number of the voltage.
9. The grid safety operation key index penetration type management and control system according to claim 1, characterized in that: the accident tripping signal comprises a protection action signal and an accident total signal.
10. The grid safe operation key index penetration type management and control system according to claim 1, wherein the method for judging whether the protection action is correct is as follows:
1) acquiring accident data of a power failure point, wherein the accident data mainly comprises accident trip signals, current, impedance and/or voltage;
2) and comparing accident data of the power failure point with the protection setting calculation fixed value, if the accident data of the power failure point are the same as the protection setting calculation fixed value, the protection action is correct, and if the accident data of the power failure point are different from the protection setting calculation fixed value, the protection action is wrong.
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