A method for preventing misoperation based on power grid topology

Abstract

The application discloses a kind of based on power grid topology's anti-misoperation method, comprising the following steps: 1) according to the live equipment outage target matrix M formed;2) the target matrix K of switch in power grid after forming dispatching issued instruction m ;3) the rationality of K m Is checked;4) with K s With K m Equipment state change matrix Z is calculated by prediction;5) compare the corresponding elements in outage target matrix M and equipment state change matrix Z, analyze whether there is misoperation.Compared with prior art, the application innovatively proposes a power grid level anti-misoperation method, fills the gap in theory of power grid level anti-misoperation;The method can quickly and accurately determine whether the dispatching instruction can cause non-target equipment unexpected outage, and provides technical support for safe and stable operation of power system;The method ends the previous complete dependence on dispatcher personal quality and personal state to determine the correctness of dispatching instruction.

Description

Technical Field

[0001] This invention relates to the field of power grid control operation and monitoring system acceptance, and in particular to a method for preventing misoperation based on power grid topology. Background Technology

[0002] With the continuous growth of social electricity demand, the number of substations in the power grid is also rapidly increasing to ensure a sufficient power supply. The ever-increasing number of substations, coupled with the renovation of existing substations, leads to a greater need for adjustments to the status of power grid equipment. Especially during peak periods of spring and autumn maintenance and the commissioning of new substations, dispatchers need to perform numerous power outages and adjustments. Improving work efficiency and quality while preventing erroneous dispatches is one of the most pressing issues to be addressed in dispatching operations. Currently, avoiding no dispatching still relies on manual work, lacking a theoretical method to prevent misoperation at the power grid level, and heavily dependent on the individual skill level of dispatchers. The risk of erroneous dispatches due to heavy workloads or poor dispatcher performance affects the safe and reliable operation of the power grid. Summary of the Invention

[0003] The purpose of this invention is to provide a method for preventing misoperation based on power grid topology to solve the above-mentioned problems.

[0004] This invention is implemented using the following technical means: a method for preventing misoperation based on power grid topology, comprising the following steps:

[0005] 1) Generate a power outage and restoration target matrix M based on the actual status of the outage equipment;

[0006] 2) Form a switch change matrix K based on the switch changes corresponding to the scheduling task order, and form matrix K based on the current operating state of the switch operated by the scheduled task order. s Through K and K s Forming the target state matrix K of switches in the power grid after the dispatching command is issued m ;

[0007] 3) For K m The rationality of the verification was checked;

[0008] 4) Use K s With K m The equipment state change matrix Z is obtained by calculation and prediction;

[0009] 5) Compare the corresponding elements in the power outage / restoration target matrix M with the equipment status change matrix Z to analyze whether there are any erroneous operations;

[0010] The verification target state matrix The calculation method is as follows:

[0011] Construct the switch change matrix K corresponding to the dispatcher's execution of dispatching task orders and the current operating state matrix K of the switches in the power grid. s , K and K s The target state matrix K of the switches in the power grid after the dispatching command is issued is obtained by summing the results. m ,Right now .

[0012] The switch shift matrix K is specifically as follows:

[0013] ,

[0014] in It refers to the number of switches in the power grid. ,when When the switch is inactive, it indicates that the switch is not in operation; when the switch is active, it indicates that the switch is not in When, it indicates that the switch is closed; when When the time is specified, it indicates that the switch is open.

[0015] Current operating state matrix K of switches in power grid s Specifically:

[0016] ,

[0017] when When, it indicates that the switch is in the open position; when When the time is specified, it indicates that the switch is in the closed position.

[0018] The specific rationality check is as follows:

[0019] like The dispatcher will issue a tripping order to the tripping status switch; if This indicates that the dispatcher has ordered the switch in the closed state to close; both of the above situations are erroneous commands, K. mi For K m The i-th switch state of the matrix.

[0020] The power outage and restoration target matrix M is specifically as follows:

[0021] ,

[0022] in It refers to the number of devices in the power grid. ,when When, it means that power will not be cut off and power will not be supplied; when When, it indicates equipment to be shut down; when At this time, it indicates equipment that needs to be powered.

[0023] The calculation steps for the equipment state change matrix Z are as follows:

[0024] 1) Construct the power grid adjacency matrix Y, and use this adjacency matrix Y to form the node topology matrix T.

[0025] 2) Define the power source matrix D using the number of power sources owned by the devices in the power grid;

[0026] 3) Calculate the device state change matrix Z using the node topology matrix T and the power supply matrix D.

[0027] The power grid adjacency matrix Y is specifically as follows:

[0028] ,

[0029] in, ;

[0030] when When, define ;

[0031] when At that time, if the first The device and the first The devices are connected by the first one. The switch is directly connected, when That is, when the switch is closed, ,when That is, when the switch is in the open position, If the first The device and the first When there is no switch directly connecting the devices ;

[0032] when When, define .

[0033] The node topology matrix ,in Y1 is the normalization function, and Y1 is the intermediate matrix. ,in This represents the maximum number of edges that cross between any two nodes in a directed vertex-line graph. For matrix Y power, when medium elements When the value is 1, the corresponding element is assigned a value of 1, and the rest are assigned a value of 0.

[0034] The power supply matrix ,in It refers to the number of devices in the power grid. , No. When the device is not a power source ;No. When the device is a power source .

[0035] The device state change matrix ,in It refers to the number of devices in the power grid. ,when When, it indicates that the state has not changed; when When, it indicates that the equipment is out of power; when When the time is right, it indicates that the equipment is powered on;

[0036] , The switch state matrix does not consider the scheduling instructions issued by the dispatcher. The node topology matrix formed at that time To take into account the switching state matrix of the dispatching instructions issued by the dispatcher The node topology matrix formed at that time.

[0037] The power outage / restoration target matrix M is compared with the corresponding elements in the equipment state change matrix Z to analyze whether there is any misoperation. Specifically:

[0038] Comparison of electric target matrix And the equipment status change matrix If the corresponding element exists in the middle, The analysis is as follows:

[0039] when hour, This is normal. Due to a power outage, multiple dispatch instructions are executed sequentially, but only one dispatch instruction will change the order of execution. The operating status of each device will not be changed by other instructions;

[0040] when hour, This situation constitutes an erroneous instruction. One device was mistakenly powered on;

[0041] when hour, This situation constitutes an erroneous instruction. One device experienced a power outage.

[0042] Compared with existing technologies, this invention innovatively proposes a method for preventing misoperation at the power grid level, filling the theoretical gap in preventing misoperation at the power grid level. This method can quickly and accurately determine whether a dispatching instruction may cause an unexpected power outage or restoration to non-target equipment, providing technical support for the safe and stable operation of the power system. This method ends the previous reliance on the personal qualities and state of the dispatcher to determine the correctness of the dispatching instructions. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the process of the present invention. Detailed Implementation

[0044] The invention will now be described in further detail with reference to the accompanying drawings:

[0045] This invention relates to a method for preventing misoperation based on power grid topology, which includes the following steps:

[0046] 1) Generate a power outage and restoration target matrix M based on the actual status of the outage equipment;

[0047] 2) Form a switch change matrix K based on the switch changes corresponding to the scheduling task order, and form matrix K based on the current operating state of the switch operated by the scheduled task order. s Through K and K s Forming the target state matrix K of switches in the power grid after the dispatching command is issued m ;

[0048] 3) For K m The rationality of the verification was checked;

[0049] 4) Use K s With K m The equipment state change matrix Z is obtained by calculation and prediction;

[0050] 5) Compare the corresponding elements in the power outage / restoration target matrix M with the equipment status change matrix Z to analyze whether there are any erroneous operations;

[0051] The verification target state matrix The calculation method is as follows:

[0052] Construct the switch change matrix K corresponding to the dispatcher's execution of dispatching task orders and the current operating state matrix K of the switches in the power grid. s , K and K s The target state matrix K of the switches in the power grid after the dispatching command is issued is obtained by summing the results. m ,Right now .

[0053] Furthermore, the switch shift matrix K is specifically as follows:

[0054] ,

[0055] in It refers to the number of switches in the power grid. ,when When the switch is inactive, it indicates that the switch is not in operation; when the switch is active, it indicates that the switch is not in When, it indicates that the switch is closed; when When the time is specified, it indicates that the switch is open.

[0056] The current operating state matrix K of the power grid switches in this invention s Specifically:

[0057] ,

[0058] when When, it indicates that the switch is in the open position; when When the time is specified, it indicates that the switch is in the closed position.

[0059] In this invention, The specific rationality check is as follows:

[0060] like The dispatcher will issue a tripping order to the tripping status switch; if This indicates that the dispatcher has ordered the switch in the closed state to close; both of the above situations are erroneous commands, K. mi For K m The i-th switch state of the matrix.

[0061] The power outage and restoration target matrix M is specifically as follows:

[0062] ,

[0063] in It refers to the number of devices in the power grid. ,when When, it means that power will not be cut off and power will not be supplied; when When, it indicates equipment to be shut down; when At this time, it indicates equipment that needs to be powered.

[0064] The steps for calculating the device state change matrix Z according to the present invention are as follows:

[0065] 1) Construct the power grid adjacency matrix Y, and use this adjacency matrix Y to form the node topology matrix T.

[0066] 2) Define the power source matrix D using the number of power sources owned by the devices in the power grid;

[0067] 3) Calculate the device state change matrix Z using the node topology matrix T and the power supply matrix D.

[0068] The power grid adjacency matrix Y is specifically as follows:

[0069] ,

[0070] in, ;

[0071] when When, define ;

[0072] when At that time, if the first The device and the first The devices are connected by the first one. The switch is directly connected, when That is, when the switch is closed, ,when That is, when the switch is in the open position, If the first The device and the first When there is no switch directly connecting the devices ;

[0073] when When, define .

[0074] The node topology matrix ,in Y1 is the normalization function, and Y1 is the intermediate matrix. ,in This represents the maximum number of edges that cross between any two nodes in a directed vertex-line graph. For matrix Y power, when medium elements When the value is 1, the corresponding element is assigned a value of 1, and the rest are assigned a value of 0.

[0075] The power supply matrix ,in It refers to the number of devices in the power grid. , No. When the device is not a power source ;No. When the device is a power source .

[0076] The device state change matrix ,in It refers to the number of devices in the power grid. ,when When, it indicates that the state has not changed; when When, it indicates that the equipment is out of power; when When the time is right, it indicates that the equipment is powered on;

[0077] , The switch state matrix does not consider the scheduling instructions issued by the dispatcher. The node topology matrix formed at that time To take into account the switching state matrix of the dispatching instructions issued by the dispatcher The node topology matrix formed at that time.

[0078] The present invention compares the corresponding elements in the power outage / restoration target matrix M with the equipment state change matrix Z to analyze whether there is any erroneous operation.

[0079] Comparison of electric target matrix And the equipment status change matrix If the corresponding element exists in the middle, The analysis is as follows:

[0080] when hour, This is normal. Due to a power outage, multiple dispatch instructions are executed sequentially, but only one dispatch instruction will change the order of execution. The operating status of each device will not be changed by other instructions;

[0081] when hour, This situation constitutes an erroneous instruction. One device was mistakenly powered on;

[0082] when hour, This situation constitutes an erroneous instruction. One device experienced a power outage.

Claims

1. A method for preventing misoperation based on power grid topology, characterized in that, Includes the following steps: 1) Generate a power outage and restoration target matrix M based on the actual status of the outage equipment; 2) Form a switch change matrix K based on the switch changes corresponding to the scheduling task order, and form matrix K based on the current operating state of the switch operated by the scheduled task order. s Through K and K s Forming the target state matrix K of switches in the power grid after the dispatching command is issued m ; 3) For K m The rationality of the verification was checked; 4) Use K s With K m The equipment state change matrix Z is calculated and predicted. 5) Compare the corresponding elements in the power outage / restoration target matrix M with the equipment status change matrix Z to analyze whether there are any erroneous operations; The verification target state matrix The calculation method is as follows: Construct the switch change matrix K corresponding to the dispatcher's execution of dispatching task orders and the current operating state matrix K of the switches in the power grid. s , K and K s The target state matrix K of the switches in the power grid after the dispatching command is issued is obtained by summing the results. m ,Right now .

2. The method for preventing misoperation based on power grid topology according to claim 1, characterized in that, The switch shift matrix K is specifically as follows: ， in It refers to the number of switches in the power grid. ,when When the switch is inactive, it indicates that the switch is not in operation; when the switch is active, it indicates that the switch is not in operation. When, it indicates that the switch is closed; when When the time is specified, it indicates that the switch is open.

3. The method for preventing misoperation based on power grid topology according to claim 1, characterized in that, Current operating state matrix K of switches in power grid s Specifically: ， when When, it indicates that the switch is in the open position; when When the time is specified, it indicates that the switch is in the closed position.

4. The method for preventing misoperation based on power grid topology according to claim 1, characterized in that, The specific rationality check is as follows: like The dispatcher will issue a tripping order to the tripping status switch; if This indicates that the dispatcher has ordered the switch in the closed state to close; both of the above situations are erroneous commands, K. mi For K m The i-th switch state of the matrix.

5. The method for preventing misoperation based on power grid topology according to claim 1, characterized in that, The power outage and restoration target matrix M is specifically as follows: ， in It refers to the number of devices in the power grid. ,when When, it means that power will not be cut off and power will not be supplied; when When, it indicates equipment to be shut down; when When, it indicates equipment to be powered.

6. The method for preventing misoperation based on power grid topology according to claim 1, characterized in that, The calculation steps for the equipment state change matrix Z are as follows: 1) Construct the power grid adjacency matrix Y, and use this adjacency matrix Y to form the node topology matrix T. 2) Define the power source matrix D using the number of power sources owned by the devices in the power grid; 3) Calculate the device state change matrix Z using the node topology matrix T and the power supply matrix D.

7. The method for preventing misoperation based on power grid topology according to claim 6, characterized in that, The power grid adjacency matrix Y is specifically as follows: ， in, ; when When, define ; when At that time, if the first The device and the first The devices are connected by the first one. The switch is directly connected, when That is, when the switch is closed, ,when That is, when the switch is in the open position, If the first The device and the first When there is no switch directly connecting the devices ; when When, define .

8. The method for preventing misoperation based on power grid topology according to claim 7, characterized in that, The node topology matrix ,in This represents the maximum number of edges that cross between any two nodes in a directed vertex-line graph. For matrix Y power, when Middle elements When the value is 1, the corresponding element is assigned a value of 1, and the rest are assigned a value of 0.

9. The method for preventing misoperation based on power grid topology according to claim 6, characterized in that, The power supply matrix ,in It refers to the number of devices in the power grid. , No. When the device is not a power source ;No. When the device is a power source .

10. A method for preventing misoperation based on power grid topology according to claim 6, characterized in that, The device state change matrix ,in It refers to the number of devices in the power grid. ,when When, it indicates that the state has not changed; when When, it indicates that the equipment is out of power; when When the time is right, it indicates that the equipment is powered on; , The switch state matrix does not consider the scheduling instructions issued by the dispatcher. The node topology matrix formed at that time To take into account the switching state matrix of the dispatching instructions issued by the dispatcher The node topology matrix formed at that time.

11. The method for preventing misoperation based on power grid topology according to claim 1, characterized in that, The power outage / restoration target matrix M is compared with the corresponding elements in the equipment state change matrix Z to analyze whether there is any misoperation. Specifically: Comparison of electric target matrix And the equipment status change matrix If the corresponding element exists in the middle, The analysis is as follows: when hour, This is normal. Due to a power outage, multiple dispatch instructions are executed sequentially, but only one dispatch instruction will change the order of execution. The operating status of each device will not be changed by other instructions; when hour, This situation constitutes an erroneous instruction. One device was mistakenly powered on; when hour, This situation constitutes an erroneous instruction. One device experienced a power outage.

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