Method and system for judging electrification state of power supply arm

Abstract

The invention relates to the technical field of intelligent power supply dispatching systems, in particular to a power supply arm electrification state judgment method and system, and the method comprises the steps: carrying out the rule definition of an electrification state and a non-electrification state of a power supply arm; setting a power-on state rule and a power-off state rule for each power supply arm, and acquiring operation parameters of each power supply arm; and verifying whether the operating parameters of the power supply arm are changed based on the electrified state rule and the non-electrified state rule, performing anti-disturbance processing on the operating parameters of the power supply arm according to a verification result until the operating parameters of the power supply arm reach a steady state, performing electrified state matching on the operating parameters of the power supply arm, and outputting the electrified state of the power supply arm. According to the method, by defining the electrified state rule and the non-electrified state rule of the power supply arm and combining real-time operation parameter analysis and anti-disturbance processing, intelligent matching and accurate judgment of the electrified state of the power supply arm are achieved, and powerful support is provided for safe and stable operation of a power grid.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent power supply dispatching systems, and in particular to a method and system for judging the live state of a power supply arm. Background Art

[0002] The stability and reliability of the power supply system are crucial to the normal operation of the power network. The power outage of the electrified railway power supply arm is closely related to the operation of the electric locomotive. The power outage operation of the overhead line or the station, on-site inspection, maintenance work, relay protection action, switch malfunction, emergency disposal, etc. may cause changes in the live state of the power supply arm. At present, the power outage of the power supply arm and the operation of the electric locomotive in the corresponding section usually rely on manual operations between the train dispatcher and the power supply dispatcher. When the train dispatcher or the power supply dispatcher receives the other party's signature order, the correctness and safety of all operations depend only on manual control, which is prone to the risk of wrong parking and wrong delivery of the electrified railway power supply arm and the wrong release of the electric locomotive into the power-free area, which directly endangers the personal safety of on-site workers and the safety of train operation. Based on this, in response to the above problems, we designed a method and system for judging the live state of the power supply arm. Summary of the invention

[0003] The purpose of the present invention is to provide a method and system for judging the energized state of a power supply arm, which defines the energized and de-energized state rules of the power supply arm, combines real-time operation parameter analysis and anti-disturbance processing, thereby realizing intelligent matching and accurate judgment of the energized state of the power supply arm, and provides strong support for the safe and stable operation of the power grid.

[0004] The present invention is achieved through the following technical solutions:

[0005] A method for determining a live state of a power supply arm, the method comprising the steps of:

[0006] Define rules for the powered and unpowered states of the power supply arm;

[0007] Setting power-on state rules and power-off state rules for each power supply arm, and obtaining operation parameters of each power supply arm;

[0008] Based on the powered state rules and the unpowered state rules, verify whether the operating parameters of the power supply arm have changed. According to the verification results, perform anti-disturbance processing on the operating parameters of the power supply arm until the operating parameters of the power supply arm reach a steady state. Then, perform powered state matching on the operating parameters of the power supply arm and output the powered state of the power supply arm.

[0009] Optionally, the power-on state and the power-off state of the power supply arm are defined by rules, which are specifically:

[0010] The feeder circuit breaker and disconnector of the power supply arm are judged in status, and the voltage value at the feeder end of the power supply arm is judged by threshold value;

[0011] If the feeder circuit breaker and disconnector of the power supply arm are in the closed state, and the feeder terminal voltage value of the power supply arm is greater than the threshold value, it is determined that the power supply arm is in the energized state;

[0012] If the feeder circuit breaker and the isolating switch of the power supply arm are in the off state, and the voltage value at the feeder end of the power supply arm is less than the threshold value, it is determined that the power supply arm is in the off state.

[0013] Optionally, the verifying whether the operating parameters of the power supply arm have changed based on the power-on state rule and the power-off state rule is specifically as follows:

[0014] Perform periodic scanning on the power supply arm and synchronously monitor whether the parameters related to the power supply arm's power state rule and power-off state rule have changed;

[0015] If not, return to re-periodically scan the power supply arm;

[0016] If so, anti-disturbance processing is performed on the operating parameters of the power supply arm.

[0017] Optionally, the anti-disturbance processing is performed on the operating parameters of the power supply arm, which is specifically:

[0018] Define the upper limit of the anti-shake cycle count and define the operating parameter change mark of the power supply arm;

[0019] Periodically scan the power supply arm and determine whether the operating parameters of the power supply arm have changed;

[0020] If yes, the running parameter change flag is set to true, the anti-shake processing start flag is set to true, the anti-shake cycle count is reset, and the running parameter change reset flag is set to false;

[0021] If not, determine whether the value assigned to the start anti-shake processing mark is true. If not, return to periodically scan the power supply arm; if yes, determine whether the anti-shake cycle count has reached the upper limit value. If not, increase the anti-shake cycle count by a unit number of times and return to periodically scan the power supply arm; if yes, determine that the operating parameters of the power supply arm have reached a steady state, match the operating parameters of the power supply arm with the power on state, and reset the anti-shake cycle count to false.

[0022] A system for judging the charged state of a power supply arm, comprising:

[0023] A rule definition unit, which defines rules for the power-on state and the power-off state of the power supply arm;

[0024] The data acquisition unit sets a power-on state rule and a power-off state rule for each power supply arm, and obtains the operating parameters of each power supply arm;

[0025] The state calculation unit verifies whether the operating parameters of the power supply arm have changed based on the powered state rules and the unpowered state rules, sets and processes the operating parameters of the power supply arm according to the verification results until the operating parameters of the power supply arm reach a steady state, matches the operating parameters of the power supply arm with the powered state, and outputs the powered state of the power supply arm.

[0026] Optionally, it also includes a human-machine interaction unit, which displays the current power status of the power supply arm in real time.

[0027] Optionally, the human-computer interaction unit renders the current power-on state of the power supply arm and determines whether the current power-on state of the power supply arm is abnormal. If not, the process is terminated; if so, an abnormal alarm is executed through the human-computer interaction unit.

[0028] Optionally, an anti-disturbance processing module is further included, and the anti-disturbance module performs setting processing on the operating parameters of the power supply arm according to the verification result, which is specifically:

[0029] Define the upper limit of the anti-shake cycle count and define the operating parameter change mark of the power supply arm;

[0030] Periodically scan the power supply arm and determine whether the operating parameters of the power supply arm have changed;

[0031] If yes, the running parameter change flag is set to true, the anti-shake processing start flag is set to true, the anti-shake cycle count is reset, and the running parameter change reset flag is set to false;

[0032] If not, determine whether the value assigned to the start anti-shake processing mark is true. If not, return to periodically scan the power supply arm; if yes, determine whether the anti-shake cycle count has reached the upper limit value. If not, increase the anti-shake cycle count by a unit number of times and return to periodically scan the power supply arm; if yes, determine that the operating parameters of the power supply arm have reached a steady state, match the operating parameters of the power supply arm with the power on state, and reset the anti-shake cycle count to false.

[0033] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0034] The present invention defines the energized and de-energized state rules of the power supply arm and combines real-time operation parameter analysis and anti-disturbance processing to achieve intelligent matching and accurate judgment of the energized state of the power supply arm, providing strong support for the safe and stable operation of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1A schematic flow chart of a method for judging the charged state of a power supply arm provided by the present invention;

[0036] Figure 2 A schematic diagram of the flow of the anti-disturbance processing provided by the present invention. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] like Figure 1 As shown, the present invention provides one embodiment: a method for determining the charged state of a power supply arm, the method comprising the steps of:

[0039] Define rules for the powered and unpowered states of the power supply arm;

[0040] Setting power-on state rules and power-off state rules for each power supply arm, and obtaining operation parameters of each power supply arm;

[0041] Based on the powered state rules and the unpowered state rules, verify whether the operating parameters of the power supply arm have changed. According to the verification results, perform anti-disturbance processing on the operating parameters of the power supply arm until the operating parameters of the power supply arm reach a steady state. Then, perform powered state matching on the operating parameters of the power supply arm and output the powered state of the power supply arm.

[0042] In this embodiment, the operating parameters of each power supply arm are obtained, specifically, when the intelligent power supply scheduling system is started, the corresponding parameters of the power supply arm are read and parsed from the configuration file, and according to the parsed configuration data, corresponding formatted judgment rules for the powered state and the unpowered state are set for each power supply arm.

[0043] Specifically, the rule definition for the powered state and the unpowered state of the power supply arm is as follows:

[0044] The feeder circuit breaker and disconnector of the power supply arm are judged in status, and the voltage value at the feeder end of the power supply arm is judged by threshold value;

[0045] If the feeder circuit breaker and disconnector of the power supply arm are in the closed state, and the feeder terminal voltage value of the power supply arm is greater than the threshold value, it is determined that the power supply arm is in the energized state;

[0046] If the feeder circuit breaker and the isolating switch of the power supply arm are in the off state, and the voltage value at the feeder end of the power supply arm is less than the threshold value, it is determined that the power supply arm is in the off state.

[0047] During implementation, if the status of the feeder circuit breaker and disconnector of the substation of this power supply arm is in the closed state, and the voltage T at the end of the feeder line in the partition of this power supply arm is greater than the set value, it can be judged that this power supply arm is in the energized state; if the status of the feeder circuit breaker and disconnector of the substation of this power supply arm is in the open state, and the voltage T at the end of the feeder line in the partition of this power supply arm is less than a specified value, it is in the off-state.

[0048] Further, the verification of whether the operating parameters of the power supply arm have changed based on the power-on state rule and the power-off state rule is specifically as follows:

[0049] Perform periodic scanning on the power supply arm and synchronously monitor whether the parameters related to the power supply arm's power state rule and power-off state rule have changed;

[0050] If not, return to re-periodically scan the power supply arm;

[0051] If so, anti-disturbance processing is performed on the operating parameters of the power supply arm.

[0052] During implementation, 1) after the program is started, according to the corresponding parameters of the power supply arm read from the configuration file, the parameter values ​​and other parameter information in the monitoring system are periodically scanned to see if they have changed; 2) once a change in parameter information is detected, the anti-shake processing flow is enabled to calculate whether the change is caused by jitter. If it is restored to the initial value within the anti-shake cycle count, it is considered that jitter has occurred. If the anti-shake cycle count is reached, and the results calculated in each cycle are consistent and indeed inconsistent with the initial value, it is considered that the parameter information has changed, and the current actual power-on state is calculated; 3) if the parameter information does change after the anti-shake processing, it is determined whether the parameters corresponding to the power supply arm meet the set judgment rules for the powered state or the unpowered state. If they meet the judgment rules, the real-time power-on state of the current power supply arm can be confirmed as the powered state or the unpowered state according to the judgment rules; if not, it means that a fault or other abnormality has occurred, and an alarm message needs to be issued to prompt the dispatcher to manually confirm; 4) the power-on state of the power supply arm after calculation or manual confirmation is immediately displayed on the human-machine interface, and the external system is notified.

[0053] like Figure 2 As shown, the anti-disturbance processing of the operating parameters of the power supply arm is specifically as follows:

[0054] Define the upper limit of the anti-shake cycle count and define the operating parameter change mark of the power supply arm;

[0055] Periodically scan the power supply arm and determine whether the operating parameters of the power supply arm have changed;

[0056] If yes, the running parameter change flag is set to true, the anti-shake processing start flag is set to true, the anti-shake cycle count is reset, and the running parameter change reset flag is set to false;

[0057] If not, determine whether the value assigned to the start anti-shake processing mark is true. If not, return to periodically scan the power supply arm; if yes, determine whether the anti-shake cycle count has reached the upper limit value. If not, increase the anti-shake cycle count by a unit number of times and return to periodically scan the power supply arm; if yes, determine that the operating parameters of the power supply arm have reached a steady state, match the operating parameters of the power supply arm with the power on state, and reset the anti-shake cycle count to false.

[0058] During implementation, this embodiment first defines an upper limit value of the anti-shake cycle count. Within this upper limit value of the anti-shake cycle count, even if the parameter changes multiple times, it will not trigger the calculation of the power supply arm's power status; secondly, a parameter change mark is defined, an anti-shake processing mark and a scanning cycle time interval, and an anti-shake cycle count are started; whether the parameter changes in real time is monitored, and when a parameter change is detected, the parameter change mark is assigned to true, and the anti-shake processing start mark is assigned to true; in the next scanning cycle, if the parameter change mark is true, the anti-shake cycle count is reset to 0, and the parameter change mark is reset to false; if the parameter does not change again and does not reach the upper limit value of the anti-shake cycle count, the anti-shake cycle count is increased by one; if the anti-shake cycle count reaches the set upper limit value of the anti-shake cycle count, it is considered to be a real change, and the power supply arm power status judgment algorithm is started, and the start anti-shake processing mark is reset to false.

[0059] In another embodiment, the present invention provides a system for determining a power supply arm power status, comprising:

[0060] A rule definition unit, which defines rules for the power-on state and the power-off state of the power supply arm;

[0061] The data acquisition unit sets a power-on state rule and a power-off state rule for each power supply arm, and obtains the operating parameters of each power supply arm;

[0062] The state calculation unit verifies whether the operating parameters of the power supply arm have changed based on the powered state rules and the unpowered state rules, sets and processes the operating parameters of the power supply arm according to the verification results until the operating parameters of the power supply arm reach a steady state, matches the operating parameters of the power supply arm with the powered state, and outputs the powered state of the power supply arm.

[0063] Specifically, it also includes a human-machine interaction unit, which displays the current power state of the power supply arm in real time. The human-machine interaction unit renders the current power state of the power supply arm and determines whether the current power state of the power supply arm is abnormal. If not, the process ends; if yes, an abnormal alarm is executed through the human-machine interaction unit.

[0064] During the implementation, 1) the background object of the intelligent power supply dispatching system is responsible for calculating the power supply arm's energized state. Once the power supply arm's energized state is calculated, the background object will immediately generate status update information; 2) the background object sends the power supply arm's energized state to the human-machine interface through the system's internal communication mechanism; 3) after the human-machine interface receives the status update, it immediately displays the current state of the power supply arm on the interface and reminds the user by changing the color; 4) if the background object detects that the power supply arm's energized state is abnormal, the abnormal alarm mechanism will be triggered. After the human-machine interface receives the abnormal alarm information, it will remind the dispatcher by visual and auditory means, such as flashing icons and issuing voice alarms; 5) after receiving the abnormal alarm, the dispatcher needs to manually check and confirm the actual energized state of the power supply arm. After confirmation, the dispatcher selects the corresponding operation through the human-machine interface; 6) the human-machine interface encapsulates the dispatcher's manual confirmation information into a feedback message and sends it back to the background object of the intelligent power supply dispatching system; 7) after receiving the manual confirmation, the background object updates the system record according to the feedback information and performs subsequent processing, such as clearing the alarm and recording the manual operation log.

[0065] More specifically, it also includes an anti-disturbance processing module, which performs setting processing on the operating parameters of the power supply arm according to the verification result, which is specifically:

[0066] Define the upper limit of the anti-shake cycle count and define the operating parameter change mark of the power supply arm;

[0067] Periodically scan the power supply arm and determine whether the operating parameters of the power supply arm have changed;

[0068] If yes, the running parameter change flag is set to true, the anti-shake processing start flag is set to true, the anti-shake cycle count is reset, and the running parameter change reset flag is set to false;

[0069] If not, determine whether the value assigned to the start anti-shake processing mark is true. If not, return to periodically scan the power supply arm; if yes, determine whether the anti-shake cycle count has reached the upper limit value. If not, increase the anti-shake cycle count by a unit number of times and return to periodically scan the power supply arm; if yes, determine that the operating parameters of the power supply arm have reached a steady state, match the operating parameters of the power supply arm with the power on state, and reset the anti-shake cycle count to false.

[0070] In summary, this embodiment uses the intelligent power supply dispatching system to monitor in real time the changes in parameters related to the energized state of the power supply arm collected by the dispatching end. Once a change is detected, it will be compared with the preset logical rules. The system calculates the energized state of the power supply arm through a built-in algorithm, reducing the need for manual intervention, and can improve the safety, efficiency and immediacy of the intelligent power supply dispatching system; secondly, the anti-disturbance processing mechanism defined in this embodiment can effectively reduce misjudgments caused by reclosing or signal jitter, ensuring that the system only responds when the parameters change stably, improving the accuracy of the judgment of the energized state of the power supply arm; in addition, the human-machine interface of the intelligent power supply dispatching system interacts with the background in real time, combining automation with manual intervention, ensuring that the system can operate reliably and respond in a timely manner in critical operations and abnormal situations. In this way, the intelligent power supply dispatching system can provide more efficient, safe and reliable power supply management.

[0071] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for judging the charged state of a power supply arm, characterized in that: The steps of the method include: Define rules for the powered and unpowered states of the power supply arm; Setting power-on state rules and power-off state rules for each power supply arm, and obtaining operation parameters of each power supply arm; Based on the powered state rules and the unpowered state rules, verify whether the operating parameters of the power supply arm have changed. According to the verification results, perform anti-disturbance processing on the operating parameters of the power supply arm until the operating parameters of the power supply arm reach a steady state. Then, perform powered state matching on the operating parameters of the power supply arm and output the powered state of the power supply arm.

2. The method for determining the charged state of a power supply arm according to claim 1, characterized in that: The rule definition of the powered state and the unpowered state of the power supply arm is specifically as follows: The feeder circuit breaker and disconnector of the power supply arm are judged in status, and the voltage value at the feeder end of the power supply arm is judged by threshold value; If the feeder circuit breaker and disconnector of the power supply arm are in the closed state, and the feeder terminal voltage value of the power supply arm is greater than the threshold value, it is determined that the power supply arm is in the energized state; If the feeder circuit breaker and the isolating switch of the power supply arm are in the off state, and the voltage value at the feeder end of the power supply arm is less than the threshold value, it is determined that the power supply arm is in the off state.

3. The method for judging the charged state of a power supply arm according to claim 2, characterized in that: The verification of whether the operating parameters of the power supply arm have changed based on the power-on state rule and the power-off state rule is specifically as follows: Perform periodic scanning on the power supply arm and synchronously monitor whether the parameters related to the power supply arm's power state rule and power-off state rule have changed; If not, return to re-periodically scan the power supply arm; If so, anti-disturbance processing is performed on the operating parameters of the power supply arm.

4. The method for judging the charged state of a power supply arm according to claim 3, characterized in that: The anti-disturbance processing of the operating parameters of the power supply arm is specifically as follows: Define the upper limit of the anti-shake cycle count and define the operating parameter change mark of the power supply arm; Periodically scan the power supply arm and determine whether the operating parameters of the power supply arm have changed; If yes, the running parameter change flag is set to true, the anti-shake processing start flag is set to true, the anti-shake cycle count is reset, and the running parameter change reset flag is set to false; If not, determine whether the value of the start anti-shake processing mark is true, if not, return to periodically scan the power supply arm; if yes, determine whether the anti-shake cycle count reaches the upper limit value, if not, increase the anti-shake cycle count by a unit number of times, and return to periodically scan the power supply arm; If so, it is determined that the operating parameters of the power supply arm have reached a steady state, the operating parameters of the power supply arm are matched with the power state, and the anti-shake cycle count reset mark is marked as false.

5. A system for judging the charged state of a power supply arm, characterized in that: include: A rule definition unit, which defines rules for the power-on state and the power-off state of the power supply arm; The data acquisition unit sets a power-on state rule and a power-off state rule for each power supply arm, and obtains the operating parameters of each power supply arm; The state calculation unit verifies whether the operating parameters of the power supply arm have changed based on the powered state rules and the unpowered state rules, sets and processes the operating parameters of the power supply arm according to the verification results until the operating parameters of the power supply arm reach a steady state, matches the operating parameters of the power supply arm with the powered state, and outputs the powered state of the power supply arm.

6. The system for judging the power supply arm's charged state according to claim 5, characterized in that: It also includes a human-machine interaction unit, which displays the current power status of the power supply arm in real time.

7. The system for judging the power supply arm's charged state according to claim 6, characterized in that: The human-computer interaction unit renders the current power-on state of the power supply arm and determines whether the current power-on state of the power supply arm is abnormal. If not, the process ends; if yes, an abnormal alarm is executed through the human-computer interaction unit.

8. The system for judging the power supply arm's charged state according to claim 7, characterized in that: It also includes an anti-disturbance processing module, which performs setting processing on the operating parameters of the power supply arm according to the verification result, which is specifically: Define the upper limit of the anti-shake cycle count and define the operating parameter change mark of the power supply arm; Periodically scan the power supply arm and determine whether the operating parameters of the power supply arm have changed; If yes, the running parameter change flag is set to true, the anti-shake processing start flag is set to true, the anti-shake cycle count is reset, and the running parameter change reset flag is set to false; If not, determine whether the value of the start anti-shake processing mark is true, if not, return to periodically scan the power supply arm; if yes, determine whether the anti-shake cycle count reaches the upper limit value, if not, increase the anti-shake cycle count by a unit number of times, and return to periodically scan the power supply arm; If so, it is determined that the operating parameters of the power supply arm have reached a steady state, the operating parameters of the power supply arm are matched with the power state, and the anti-shake cycle count reset mark is marked as false.

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