CN102832710B - Assistant decision making method for quick power rationing of regional power grids - Google Patents

Abstract

The present invention provides an auxiliary decision-making method for rapid power rationing in regional power grids, which is based on the regional smart grid dispatching technical support system, including: step S1, establishing a corresponding relationship table according to the sequence table of pulling routes and the system model information of the region; step S2, according to The real-time equipment load data, the routing sequence table and the target value of the cut-off load are optimized and calculated through the routing sequence to obtain the routing operation table of the routing equipment that removes the load; step S3, obtain the real-time monitoring information of the routing load and display it on the human On the machine-computer interaction interface, and select the pulling strategy set on the human-computer interaction interface to manually adjust the pulling operation table, and obtain the circuit breaker corresponding to the pulling equipment in the pulling operation table according to the corresponding relationship table; step S4, according to the pulling The switch sequence of the circuit breaker that needs to be operated is provided by the circuit operation table, and the switch sequence of the circuit breaker is remotely operated. It reduces manual operation steps and manual calculation, greatly reduces the operation time of pulling power rationing, and improves the accuracy of operation.

Description

An Auxiliary Decision-Making Method for Rapid Power Ratio in Regional Power Grids

technical field

The invention relates to the field of electric power system dispatching automation, in particular to an auxiliary decision-making method for rapid power rationing in regional power grids.

Background technique

Rapid power rationing in regional power grids means that in the event of an accident in the power grid or an imbalance between power supply and demand, the provincial dispatcher issues an order to the prefecture-level dispatcher for the capacity of the route. Or the sequence table of the accident pulling line, manually check and arrange the pulling line combination according to the real-time data, and the power substation monitoring personnel will pull the power supply line circuit breaker to stop the power supply forcibly. During the process of issuing the removal order, the dispatcher needs to manually check SCADA (Supervisory Control And Data Acquisition, Data Acquisition and Supervisory Control) system telemetry and telesignaling data to ensure that the total load removed finally reaches the target value.

The traditional power cut operation mainly relies on the telephone method. The dispatcher of the provincial dispatching center notifies the prefecture-level dispatching center to issue the target of the load limit task, and the prefectural-level dispatcher then arranges according to the current power grid operation situation and combined with the pull sequence table. Outline the line sequence that needs to be switched on and cut off, and notify the corresponding monitoring or substation operators to execute it. This mode has the following disadvantages:

1. The degree of automation is low, the management process is lacking, and the manual operation is the main method. The records of the pull and recovery time of the two external lines, the load of the pull, and the statistics of the power loss all need to be manually processed by the dispatcher, which greatly increases the dispatching time. staff workload.

2. There are many intermediate links. For example, manual checking and calculation are required for arranging lines. The issued instructions need to correspond to different monitoring or substation operators one by one. The entire execution process takes a long time and cannot quickly control the load.

3. Manual wiring is complex and lacks auxiliary decision-making means. After receiving the task, the ground dispatching dispatcher completely relies on manual analysis. In the selection of the pulling operation, it needs to be determined by comparing the pull-limiting sequence table and the current real-time operation status of the current grid load. Effective auxiliary decision-making means lead to inefficient decision-making, and there is a possibility of mis-scheduling and mis-operation.

4. The efficiency of road pulling is low. When multi-way road pulling is carried out, there is a lack of effective closed-loop control means and measures. The efficiency of road pulling is low, and even the phenomenon of not being able to pull roads in time can not respond to dispatching needs in a timely manner, which affects the safe and stable operation of the power grid. At present, dispatching in various regions does not provide effective management and technical means for power rationing.

Contents of the invention

The present invention provides an auxiliary decision-making method for rapid power rationing in regional power grids, which is based on the regional smart grid dispatching technical support system, and the method includes:

Step S1, establish a correspondence table according to the route order table and the system model information of the region, the correspondence table includes the lines in the route order table in the region and the circuit breakers required to operate when shedding loads corresponding relationship;

Step S2, obtain the real-time load data of the equipment, according to the real-time equipment load data, the pull sequence table and the target value of the cut-off load, and calculate and obtain the pull operation table of the cut-off load pull equipment through the optimization calculation of the pull sequence;

Step S3, obtain the real-time monitoring information of the road load and display it on the human-computer interaction interface, and select the road-pull strategy set on the human-computer interaction interface to manually adjust the road-pull operation table, and obtain the road-pull operation table according to the corresponding relationship table. The circuit breaker corresponding to the circuit pulling equipment in the circuit pulling operation table;

Step S4, according to the switch sequence of the circuit breaker that needs to be operated provided by the circuit-pull operation table, when it is judged that the circuit breaker corresponding to the circuit-pull equipment in the circuit-pull operation table is equipped with a remote control device, Remote operation of the circuit breaker switching sequence described above.

In the first preferred technical solution provided by the present invention: after generating the correspondence table in the step S1, it further includes:

Step S101, read the real-time remote signaling value of the circuit breaker, determine the incomplete records in the correspondence table and the circuit breakers that are already in the disconnected state, and form a sequence check table;

Step S102, judging whether there is any inconsistent content in the sequence check table and the corresponding relationship table, if yes, execute step S103, if no, execute step S2;

Step S103, modifying the corresponding relationship table according to the sequence check table, completing incomplete records in the corresponding relationship table, and then performing step S101.

In the second preferred technical solution provided by the present invention: in the step S3, the corresponding operation table for pulling the road is respectively obtained according to the power limitation situation, the accident situation, the planned maintenance situation and the over-plan power rationing situation;

In the case of power limitation, select the pulling strategy set, and obtain the pulling operation table according to the target value of the load shedding;

In the event of an accident, the accident situation is set to obtain the operation table for pulling the road, so as to ensure the safety of the power grid, reduce the accident loss, and prevent the accident from expanding;

When planning the maintenance situation, input the maintenance planning equipment to obtain the road pulling operation table.

In the case of power rationing beyond the plan, the region or unit with power beyond the plan is restricted to obtain the circuit pulling operation table.

In the third preferred technical solution provided by the present invention: in the step S3, the real-time remote signaling data of the load of the pull road is obtained according to the parameters of the power grid model equipment obtained from the model management and the steady-state monitoring of the power grid operation, and the pull load is obtained. Real-time monitoring information of road load;

The real-time monitoring information of the road load is displayed intensively for dispatching technicians using visualization technology;

The power grid model device parameters include device information and device topology connection relationship information, and the real-time monitoring information of the pull circuit load includes the opening and closing status of the switch associated with the pull circuit, the name of the device currently associated with the pull circuit, and the name of the active device.

In the fourth preferred technical solution provided by the present invention: in the step S3, the road pulling strategy set includes load removal according to the control sequence number, load removal according to the control priority, load removal according to the order of the current load value from large to small, and Cut off the load according to the order of the current load value from small to large;

On the human-computer interaction interface, set whether the pulling target is engaged, the control sequence number, and the control priority.

In the fifth preferred technical solution provided by the present invention: the step S4 includes:

Step S401, according to the switch sequence of the circuit breaker that needs to be operated provided by the circuit-pull operation table, determine whether the circuit breaker recorded in the sequence check table is included in the circuit-pull operation table, and if yes, remove the circuit breaker Execute step S401 after operating the equipment recorded in the sequence inspection table whose circuit breaker has been pulled, and if no, execute step S402;

Step S402, judging whether the circuit breaker corresponding to the circuit pulling equipment in the circuit pulling operation table is equipped with a remote control device, if yes, execute step S403, if no, execute step S404;

Step S403, end after performing remote control operation on the circuit breaker switching sequence;

Step S404, after giving a control command to the station attendant by phone, it ends.

In the sixth preferred technical solution provided by the present invention: in the step S403, the dispatcher directly issues a load shedding command on the interface, and controls the switch knife switch to remotely pull the load shedding through the data channel of real-time monitoring and intelligent alarm of the power grid.

The beneficial effects of an auxiliary decision-making method for rapid power rationing in a regional power grid provided by the present invention include:

1. The present invention provides an auxiliary decision-making method for rapid power reduction in regional power grids. According to the established list of accident and power-limiting circuit sequences, the cut-off is automatically calculated based on real-time data in the event of an accident or power-limiting The optimal set of pulling objects involved in the load target value provides a list of pulling sequences, which reduces manual operation steps and manual calculations, greatly reduces the time for pulling and limiting operations, and improves the accuracy of operations.

2. After generating the corresponding relationship table, read the remote signal value of the circuit breaker to find out the incomplete records in the corresponding relationship table and the circuit breaker that is already in the disconnected state to form a sequence check table, and use the sequence check table to match the corresponding Improve the incomplete records in the relational table to ensure the accuracy of the generated corresponding relational table.

3. Use visualization technology to realize the human-computer interaction interface. The human-computer interaction interface can select the routing strategy set, and manually adjust the routing operation table to realize the flexible selection of various routing strategy sets.

4. Judging whether there is a device that has been opened in the pull operation table through the sequence check table, avoiding unnecessary operations in the pull operation table.

5. Determine whether the circuit breaker corresponding to the pulling equipment in the pulling operation table is equipped with a remote control device. If there is no remote control device, the operator on duty at the factory station will issue a control command by telephone and end. Send load shedding command, through the data channel of real-time monitoring and intelligent alarm of the power grid, control the switch knife to remotely open the load shedding, further reduce the control time and reduce the misoperation rate.

Description of drawings

Fig. 1 is a kind of regional electric network rapid pull power rationing assistant decision-making method provided by the present invention;

Fig. 2 is a schematic structural diagram of an auxiliary decision-making method for quickly pulling power rationing in a regional power grid provided by the present invention;

Fig. 3 is the processing structural diagram of the route sequence bit table provided by the present invention;

Fig. 4 is the flow chart of the method for perfecting the correspondence table provided by the present invention;

Fig. 5 is a schematic structural diagram of the real-time monitoring of road load provided by the present invention;

FIG. 6 is a schematic structural diagram of the selection of the routing strategy set provided by the present invention;

Fig. 7 is the flow chart of the road pulling operation provided by the present invention;

Fig. 8 is a schematic diagram of the structure of the remote control of the pulling operation provided by the present invention.

Detailed ways

The present invention provides an auxiliary decision-making method for fast pull-out and power-limitation of regional power grids, which collects real-time data based on SCADA, and automatically selects and pulls the pre-designed sequence of accident pull-out sequences and power-limit pull-out sequences by manually setting pull-out strategy sets. Road equipment, give the list of road equipment, and perform analog remote control and real-time remote control operations.

The pull sequence table is formulated in accordance with the provisions of the "Regulations on the Management of Power Grid Dispatching" and the "Measures for the Implementation of the Regulations on the Management of Power Grid Dispatch". In accordance with the principles of ensuring the use of electricity for residents' lives and important institutions and the safe production and use of electricity for enterprises, the power grid operating enterprises are organized Prepare the emergency plan for power supply, which should include the power limit sequence table for excess power supply capacity and the sequence table for pulling roads in emergency situations. For enterprises that do not comply with industrial policies, have high pollution, and high energy consumption, if necessary, they can be considered as units that cut off peak power for a short period of time. When there is tension in the power supply or when it is really necessary to ensure the safe operation of the power grid, the power load control technology management system can be activated according to the emergency plan approved by the government in advance, and the technical power rationing is implemented according to the power rationing sequence table. Electricity users should be notified in advance.

The present invention will be further described below in conjunction with the accompanying drawings.

The present invention provides an auxiliary decision-making method for rapid power rationing in regional power grids, which is based on the regional smart grid dispatching technical support system. The specific method flow chart is shown in Figure 1, including:

In step S1, a correspondence table is established according to the routing order table and the system model information of the area, and the correspondence table includes the corresponding relationship between the lines in the routing order table of the area and the circuit breakers that need to be operated when shedding the load.

Step S2, obtain the real-time load data of the equipment, and according to the real-time equipment load data, the routing sequence table and the target value of the cut-off load, obtain the routing operation table of the routing equipment for the load-cutting through optimization calculation of the routing sequence.

Step S3, obtain the real-time monitoring information of the road load and display it on the human-computer interaction interface, and manually adjust the road pulling operation table by selecting the road pulling strategy set on the human-computer interaction interface, and obtain the road pulling operation table according to the corresponding relationship table The circuit breaker corresponding to the pull-circuit device in .

Step S4, according to the circuit breaker switch sequence that needs to be operated provided by the circuit pulling operation table, when it is judged that the circuit breaker corresponding to the circuit pulling equipment in the circuit pulling operation table is equipped with a remote control device, remote control is performed on the circuit breaker switch sequence.

A schematic diagram of the structure of an auxiliary decision-making method for fast pulling and limiting electricity in a regional power grid provided by the present invention is shown in Fig. Sequence table processing Obtain the route sequence table information from the model management, and generate a corresponding relationship table.

Preferably, after the corresponding relationship table is generated in step S1, the process of perfecting the corresponding relationship table is also included, and its step flow is shown in Figure 4, specifically:

Step S101, read the real-time remote signaling value of the circuit breaker, determine the incomplete records in the correspondence table and the circuit breakers in the disconnected state in the correspondence table, and form a sequence check table.

Step S102, judging whether there is any inconsistent content in the sequence check table and the corresponding relationship table, if yes, execute step S103, if no, execute step S2.

Step S103, modifying the corresponding relationship table according to the sequence check table, completing the incomplete records in the corresponding relationship table, and executing step S101.

In step S2, the corresponding circuit pulling operation table can be obtained respectively according to the situation of power shortage, accident situation, planned maintenance situation and power rationing beyond plan.

In the case of power shortage, select the pull strategy set, and draw the pull operation table according to the target value of load shedding.

In the event of an accident, the accident situation is set to obtain a road pulling operation table to ensure the safety of the power grid, reduce the accident loss, and prevent the accident from expanding.

When planning the maintenance situation, input the maintenance planning equipment to get the road pulling operation table.

In the case of over-planned power rationing, the power-restriction operation table is obtained for the over-planned power consumption areas or units. The purpose is to gradually reduce and eventually avoid the power consumption of the region beyond the planned power consumption, and the users who do not exceed the planned power consumption are ranked first. However, power is limited for no reason, and gradually realizes "whoever exceeds the limit, and the power limit reaches the household".

The schematic diagram of the real-time monitoring structure of the pull road load provided by the present invention is shown in Figure 5. It can be seen from Figure 5 that in step S3, the parameters of the power grid model equipment are obtained from the model management, and the real-time remote information of the pull road load is obtained from the steady state monitoring of the power grid operation. The real-time monitoring information of the road load is obtained from the data, and the real-time monitoring information of the road load is displayed for dispatching technicians using visualization technology. The real-time monitoring information of the load includes the opening and closing status of the associated switch of the pulling circuit, the name of the device currently associated with the pulling circuit and the active device.

The structural diagram of the selection of the road-pull strategy set provided by the present invention is shown in Figure 6. The road-pull strategy set includes load removal according to the control sequence number, load removal according to the control priority, load removal according to the order of the current load value from large to small, and load removal according to the order of the current load value. The order of the current load value is from small to large, and the load is cut off. The human-computer interface can set whether the pulling target is put into operation, the control sequence number, the control priority, etc., and the dispatcher can clearly and intuitively understand the pulling roads they care about on the human-computer interaction interface. Sequence-related information facilitates the adjustment of the routing strategy set, and the flexible selection of various routing strategy sets can be realized by inputting the target load to be removed.

Step S4 is a specific flowchart of the process of pulling the road as shown in Figure 7, including:

Step S401, according to the switch sequence of the circuit breaker that needs to be operated provided by the circuit pulling operation table, judge whether the circuit breaker recorded in the sequence check table is included in the circuit pulling operation table, and if yes, remove the sequence check recorded in the circuit pulling operation table Execute step S401 after indicating the device whose circuit breaker has been disconnected, and execute step S402 if no.

Step S402, judging whether the circuit breaker corresponding to the circuit pulling equipment in the circuit pulling operation table is equipped with a remote control device, if yes, execute step S403, and if no, execute step S404.

In step S403, the circuit breaker switching sequence is remotely controlled and then ended.

Step S404, after giving a control command to the station attendant by phone, it ends.

Figure 8 is a schematic diagram of the remote control structure of the pulling operation. It can be seen from Figure 8 that after the selection of the pulling strategy set, the remote control of the pulling operation is performed on the equipment with the telecontrol function, and the dispatcher can directly issue a load shedding command on the interface , Through the data channel of real-time monitoring and intelligent alarm of the power grid, the control switch knife switch is opened remotely, so as to achieve the effect of load shedding.

Although the embodiments of the present invention have been described in detail above based on the accompanying drawings, they are not limited to this specific embodiment, and various equivalents and deformations performed by those skilled in the art according to this specific technical solution are also within the scope of protection of the present invention. Inside.

Claims (6)

1. An auxiliary decision-making method for quickly pulling power rationing in a regional power grid, based on a regional smart grid dispatching technology support system, characterized in that the method includes: Step S1, establish a correspondence table according to the route order table and the system model information of the region, the correspondence table includes the lines in the route order table in the region and the circuit breakers required to operate when shedding loads corresponding relationship; Step S2, obtain the real-time load data of the equipment, according to the real-time equipment load data, the pull sequence table and the target value of the cut-off load, and calculate and obtain the pull operation table of the cut-off load pull equipment through the optimization calculation of the pull sequence; Step S3, obtain the real-time monitoring information of the road load and display it on the human-computer interaction interface, and select the road-pull strategy set on the human-computer interaction interface to manually adjust the road-pull operation table, and obtain the road-pull operation table according to the corresponding relationship table. The circuit breaker corresponding to the circuit pulling equipment in the circuit pulling operation table; Step S4, according to the switch sequence of the circuit breaker that needs to be operated provided by the circuit-pull operation table, when it is judged that the circuit breaker corresponding to the circuit-pull equipment in the circuit-pull operation table is equipped with a remote control device, The circuit breaker switch sequence can be operated remotely; After generating the correspondence table in the step S1, it also includes: Step S101, read the real-time remote signaling value of the circuit breaker, determine the incomplete records in the correspondence table and the circuit breakers that are already in the disconnected state, and form a sequence check table; Step S102, judging whether there is any inconsistent content in the sequence check table and the corresponding relationship table, if yes, execute step S103, if no, execute step S2; Step S103, modifying the corresponding relationship table according to the sequence check table, completing incomplete records in the corresponding relationship table, and then performing step S101. 2. The method according to claim 1, characterized in that, in the step S2, the corresponding operation tables for pulling roads are respectively obtained according to the power-limited situation, the accident situation, the planned maintenance situation and the over-planned power-limited situation; In the case of power limitation, select the pulling strategy set, and obtain the pulling operation table according to the target value of the load shedding; In the event of an accident, the accident situation is set to obtain the operation table for pulling the road, so as to ensure the safety of the power grid, reduce the accident loss, and prevent the accident from expanding; When planning the maintenance situation, input the maintenance planning equipment to obtain the road pulling operation table; In the case of power rationing beyond the plan, the region or unit with power beyond the plan is restricted to obtain the circuit pulling operation table. 3. The method according to claim 1, characterized in that, in the step S3, according to obtaining the power grid model equipment parameters from the model management and obtaining the real-time remote signaling data of the road load from the power grid operation steady state monitoring, Obtain the real-time monitoring information of the road load; The real-time monitoring information of the road load is displayed intensively for dispatching technicians using visualization technology; The power grid model device parameters include device information and device topology connection relationship information, and the real-time monitoring information of the pull circuit load includes the opening and closing status of the switch associated with the pull circuit, the name of the device currently associated with the pull circuit, and the name of the active device. 4. The method according to claim 1, characterized in that, in the step S3, the road pulling policy set includes load removal according to the control sequence number, load removal according to the control priority, and current load value in order from large to large. Small cut-off load and cut-off load according to the order of current load value from small to large; On the human-computer interaction interface, set whether the pulling target is engaged, the control sequence number, and the control priority. 5. The method according to claim 1, wherein said step S4 comprises: Step S401, according to the switch sequence of the circuit breaker that needs to be operated provided by the circuit-pull operation table, determine whether the circuit breaker recorded in the sequence check table is included in the circuit-pull operation table, and if yes, remove the circuit breaker Execute step S401 after operating the equipment recorded in the sequence inspection table whose circuit breaker has been pulled, and if no, execute step S402; Step S402, judging whether the circuit breaker corresponding to the circuit pulling equipment in the circuit pulling operation table is equipped with a remote control device, if yes, execute step S403, if no, execute step S404; Step S403, end after performing remote control operation on the circuit breaker switching sequence; Step S404, after giving a control command to the station attendant by phone, it ends. 6. The method according to claim 5, characterized in that, in the step S403, the dispatcher directly issues a load shedding command on the interface, and controls the remote opening of the switch through the real-time monitoring and intelligent alarm data channel of the power grid. Shedding load.