CN115425658B - Data interaction method for power grid accurate load shedding system ground adjustment main distribution network - Google Patents
Data interaction method for power grid accurate load shedding system ground adjustment main distribution network Download PDFInfo
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- 230000009897 systematic effect Effects 0.000 claims 4
- 230000007547 defect Effects 0.000 abstract description 3
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The invention discloses a data interaction method between a main distribution network and a power grid accurate load shedding system ground adjustment, which relates to the technical field of power grid data interaction and comprises the following steps: s1, establishing model data in an interactive way; s2, establishing real-time data interaction; s3, interactively establishing a control function; s4, sending a control instruction; s5, controlling a process interaction stage. The method for data interaction between the main distribution network and the auxiliary distribution network is capable of achieving accurate load shedding of the power grid, has positive significance in increasing the accident power-on capacity and solving the problem of contradiction between supply and demand of the power grid at the current stage, overcomes the defect of rough batch control of the power grid in province and land load by achieving data interaction of the main distribution network and adding the distribution network controllable demarcation switch and feeder information, achieves refined control of the 10kV branch line load, reduces the influence on civil electricity consumption, and has important significance in ensuring safe and stable operation of the power grid.
Description
Technical Field
The invention relates to the field of power grid data interaction, in particular to a data interaction method between a main power grid and a distribution network of a power grid accurate load shedding system.
Background
The current load control mode is rough, the load control can only be accurate to the 10kV main line of the transformer substation, the 10kV branch line load and the user side load can not be controlled, and the power supply reliability of the civil and important loads can not be guaranteed while the safe and stable operation of the power grid is guaranteed.
The main network system and the distribution network system of the current power grid dispatching control system are relatively independent, so that interaction of model data, real-time data, control functions and the like between the dispatching automation system and the distribution automation system cannot be well realized, and the condition of realizing provincial and regional distribution integrated precise load control is not provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for accurately switching loads of a power grid and systematically adjusting data interaction between a main network and a distribution network, which solves the problems in the background art.
In order to achieve the above purpose, the invention is realized by the following technical scheme, and the method for data interaction between the main distribution network and the distribution network is systematically adjusted by precisely cutting load of a power grid, which comprises the following steps:
S1, model data interaction establishment
The distribution network DMS system is used for generating distribution network switches and load modeling E files, the main network EMS system models by analyzing the files, wherein the file content comprises sequence numbers, distribution demarcation switch IDs and names, feeder line IDs and names of the distribution network demarcation switches, and load IDs and names of distribution feeder lines corresponding to the main network EMS system;
S2, real-time data interaction establishment
The distribution network DMS system is used for generating a real-time data interaction E file, the main network EMS system analyzes file update data, and file contents comprise sequence numbers, distribution network switch IDs, switch states, current loads and whether a switch is controllable or not;
S3, control function interaction establishment
The intelligent line selection utilizes a main network EMS system to modify an intelligent line selection function, the distribution network DMS system receives a provincial dispatching issuing control target value and independently initiates a load line drawing process, a main network control sequence list and a distribution network control sequence list are automatically generated according to a sequence table of the main distribution network, meanwhile, the distribution network control sequence list is transmitted to the distribution network DMS system in a file mode through a physical isolation device, and the switches in the distribution network control sequence list screened in the intelligent line selection stage are controllable through a status identifier of whether the switches are controllable or not in a real-time data interaction file between the main distribution network;
S4, sending control instructions
The main network EMS system sends the distribution network control sequence list to the distribution network DMS system in a file mode;
S5, controlling process interaction stage
After the main network EMS system sends a control instruction to the distribution network DMS system, the distribution network DMS system returns a correction control instruction receiving condition within a specified time, and when the main network EMS system finishes the cutting of the main network switch and waits for the distribution network DMS system to return a distribution network control result, if a control waiting countdown mode is adopted, the execution result is not received after the countdown is finished, and the condition that the actual execution result of the distribution network cannot be obtained can occur; therefore, in the actual control process of the distribution network DMS system, the current control state file is periodically sent to the main network EMS system, and the main network EMS system can timely know the executed result of the current control of the distribution network by analyzing the file; if abnormal conditions occur in the distribution network control process, the main network EMS system can also learn in time, collect the current control result immediately, unnecessary waiting time is saved, and the control process interaction file comprises a control flow identification ID, a control state, a control mode, a cut-off demarcation switch and a load.
Furthermore, in the S1 MODEL data interaction establishing process, the MODEL data interaction file naming rule is 'regional abbreviation_DMS_MODEL_time, month, day, minute, second, CIME', and the file transmission frequency is 1 time/day;
furthermore, in the process of establishing the S2 real-time DATA interaction, the naming rule of the real-time DATA interaction file is 'regional abbreviation_DMS_YC_DATA_time, month, day, minute, second and DT', and the file transmission period is 5 minutes/time.
Further, the configuration network control sequence list interaction file in the process of sending the S4 control instruction includes a control flow identifier ID, a control state, a control mode, a sequence number, and a configuration network switch ID, and the naming rule of the configuration network control sequence list file issued by the main network is "regional abbreviation_ EMStoDMS _yk_year, month, day, month, time, minute, second and DT", and the file transmission mode is immediate triggering.
Furthermore, the naming rule of the control process interaction file returned by the distribution network to the main network in the S5 control process interaction stage is 'regional abbreviation_ DMStoEMS _YK_time, month, day, minute, second and DT', and the file type comprises a control execution confirmation file, a control execution process file, a control execution result file, a file type and a transmission period.
The invention provides a data interaction method for regulating a main distribution network in a power grid accurate load shedding system, which has the following beneficial effects: the method for accurately switching loads of the power grid and systematically adjusting data interaction between the main distribution network has positive significance for increasing the accident pull-out capacity and solving the problem of contradiction between supply and demand of the power grid at the current stage, and the defects of rough batch control of the land-saving loads are overcome by increasing the distribution network controllable demarcation switch and feeder information to which the distribution network belongs by realizing the data interaction of the main distribution network, so that the refined control of the loads of 10kV branch lines is realized, the influence on civil electricity is reduced, and the method has important significance for ensuring the safe and stable operation of the power grid.
Drawings
Fig. 1 is a schematic diagram of data interaction content and a periodic flow of a method for systematically adjusting data interaction between a main network and a distribution network in a power grid accurate load shedding system.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
A method for data interaction between a main distribution network and a distribution network of a power grid accurate load shedding system comprises the following steps:
S1, model data interaction establishment
The distribution network DMS system is used for generating distribution network switches and load modeling E files, the main network EMS system MODELs by analyzing the files, wherein file contents comprise sequence numbers, distribution demarcation switch IDs and names, feeder line IDs and names of the distribution network demarcation switches, and load IDs and names of the distribution feeder lines corresponding to the main network EMS system, and a MODEL data interaction file naming rule is' regional abbreviation_DMS_MODEL_time, month, day, minute, second, time, date, minute, second;
S2, real-time data interaction establishment
The distribution network DMS system is used for generating a real-time DATA interaction E file, the main network EMS system analyzes file update DATA, file content comprises sequence numbers, distribution network switch IDs, switch states, current loads and whether the switches are controllable, wherein a real-time DATA interaction file naming rule is 'regional abbreviation_DMS_YC_DATA_time, month, day, month, time, minute, second and DT', and a file transmission period is 5 minutes/time;
S3, control function interaction establishment
The intelligent line selection utilizes a main network EMS system to modify an intelligent line selection function, the distribution network DMS system receives a provincial dispatching issuing control target value and independently initiates a load line drawing process, a main network control sequence list and a distribution network control sequence list are automatically generated according to a sequence table of the main distribution network, meanwhile, the distribution network control sequence list is transmitted to the distribution network DMS system in a file mode through a physical isolation device, and the switches in the distribution network control sequence list screened in the intelligent line selection stage are controllable through a status identifier of whether the switches are controllable or not in a real-time data interaction file between the main distribution network;
S4, sending control instructions
The main network EMS system sends a distribution network control sequence list to the distribution network DMS system in a file mode, wherein the distribution network control sequence list interaction file comprises a control flow identifier ID, a control state, a control mode, a sequence number and a distribution network switch ID, the naming rule of the distribution network control sequence list file issued by the main network is 'regional abbreviation_ EMStoDMS _YK_time, month, day, minute, second and DT', and the file transmission mode is instant triggering;
S5, controlling process interaction stage
After the main network EMS system sends a control instruction to the distribution network DMS system, the distribution network DMS system returns a correction control instruction receiving condition within a specified time, and when the main network EMS system finishes the cutting of the main network switch and waits for the distribution network DMS system to return a distribution network control result, if a control waiting countdown mode is adopted, the execution result is not received after the countdown is finished, and the condition that the actual execution result of the distribution network cannot be obtained can occur; therefore, in the actual control process of the distribution network DMS system, the current control state file is periodically sent to the main network EMS system, and the main network EMS system can timely know the executed result of the current control of the distribution network by analyzing the file; if an abnormal situation occurs in the control process of the distribution network, the main network EMS system can also learn timely, the current control result is summarized immediately, unnecessary waiting time is saved, the control process interaction file comprises a control flow identification ID, a control state, a control mode, a cut-off demarcation switch and a load, wherein the naming rule of the control process interaction file returned by the distribution network to the main network is 'regional abbreviation_ DMStoEMS _YK_time, month, day, month, time, minute, second and DT', and the file type comprises a control execution confirmation file, a control execution process file, a control execution result file, a file type and a transmission period.
In summary, the method for systematically adjusting the data interaction between the main distribution network by accurately cutting the load of the power grid comprises the following specific steps of:
S1, establishing model data interaction: the distribution network DMS system is used for generating distribution network switches and load modeling E files, the main network EMS system MODELs by analyzing the files, wherein file contents comprise sequence numbers, distribution demarcation switch IDs and names, feeder line IDs and names of the distribution network demarcation switches, and load IDs and names of the distribution feeder lines corresponding to the main network EMS system, and a MODEL data interaction file naming rule is' regional abbreviation_DMS_MODEL_time, month, day, minute, second, time, date, minute, second;
S2, establishing real-time data interaction: the distribution network DMS system is used for generating a real-time DATA interaction E file, the main network EMS system analyzes file update DATA, file contents comprise sequence numbers, distribution network switch IDs, switch states, current loads and whether the file is controllable, wherein a real-time DATA interaction file naming rule is 'regional abbreviation_DMS_YC_DATA_annual, month, day, time, minute, second and DT', and a file transmission period is 5 minutes/times;
S3, the intelligent line selection utilizes the main network EMS system to modify the intelligent line selection function, the distribution network DMS system receives the dispatching issuing control target value and independently initiates a load line drawing process, a main network control sequence list and a distribution network control sequence list are automatically generated according to a sequence table of the main distribution network, meanwhile, the distribution network control sequence list is transmitted to the distribution network DMS system in a file mode through a physical isolation device, and the switches in the distribution network control sequence list screened in the intelligent line selection stage are controllable through a 'whether controllable' state identifier of the switches in a real-time data interaction file between the main distribution network;
S4, sending a control instruction: the main network EMS system sends a distribution network control sequence list to the distribution network DMS system in a file mode, wherein the distribution network control sequence list interaction file comprises a control flow identifier ID, a control state, a control mode, a sequence number and a distribution network switch ID, the naming rule of the distribution network control sequence list file issued by the main network is 'regional abbreviation_ EMStoDMS _YK_time, month, day, minute, second and DT', and the file transmission mode is instant triggering;
S5, controlling a process interaction stage: after the main network EMS system sends a control instruction to the distribution network DMS system, the distribution network DMS system returns a correction control instruction receiving condition within a specified time, and when the main network EMS system finishes the cutting of the main network switch and waits for the distribution network DMS system to return a distribution network control result, if a control waiting countdown mode is adopted, the execution result is not received after the countdown is finished, and the condition that the actual execution result of the distribution network cannot be obtained can occur; therefore, in the actual control process of the distribution network DMS system, the current control state file is periodically sent to the main network EMS system, and the main network EMS system can timely know the executed result of the current control of the distribution network by analyzing the file; if an abnormal situation occurs in the control process of the distribution network, the main network EMS system can also learn timely, the current control result is summarized immediately, unnecessary waiting time is saved, the control process interaction file comprises a control flow identification ID, a control state, a control mode, a cut-off demarcation switch and a load, wherein the naming rule of the control process interaction file returned by the distribution network to the main network is 'regional abbreviation_ DMStoEMS _YK_time, month, day, month, time, minute, second and DT', and the file type comprises a control execution confirmation file, a control execution process file, a control execution result file, a file type and a transmission period.
The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (5)
1. A method for data interaction between a main distribution network and a power grid accurate load shedding system is characterized by comprising the following steps:
S1, model data interaction establishment
The distribution network DMS system is used for generating distribution network switches and load modeling E files, the main network EMS system models by analyzing the files, wherein the file content comprises sequence numbers, distribution demarcation switch IDs and names, feeder line IDs and names of the distribution network demarcation switches, and load IDs and names of distribution feeder lines corresponding to the main network EMS system;
S2, real-time data interaction establishment
The distribution network DMS system is used for generating a real-time data interaction E file, the main network EMS system analyzes file update data, and file contents comprise sequence numbers, distribution network switch IDs, switch states, current loads and whether a switch is controllable or not;
S3, control function interaction establishment
The intelligent line selection utilizes a main network EMS system to modify an intelligent line selection function, the distribution network DMS system receives a provincial dispatching issuing control target value and independently initiates a load line drawing process, a main network control sequence list and a distribution network control sequence list are automatically generated according to a sequence table of the main distribution network, meanwhile, the distribution network control sequence list is transmitted to the distribution network DMS system in a file mode through a physical isolation device, and the switches in the distribution network control sequence list screened in the intelligent line selection stage are controllable through a status identifier of whether the switches are controllable or not in a real-time data interaction file between the main distribution network;
S4, sending control instructions
The main network EMS system sends the distribution network control sequence list to the distribution network DMS system in a file mode;
S5, controlling process interaction stage
After the main network EMS system sends a control instruction to the distribution network DMS system, the distribution network DMS system returns a correction control instruction receiving condition within a specified time, and when the main network EMS system finishes the cutting of the main network switch and waits for the distribution network DMS system to return a distribution network control result, if a control waiting countdown mode is adopted, the execution result is not received after the countdown is finished, and the condition that the actual execution result of the distribution network cannot be obtained can occur; therefore, in the actual control process of the distribution network DMS system, the current control state file is periodically sent to the main network EMS system, and the main network EMS system can timely know the executed result of the current control of the distribution network by analyzing the file; if abnormal conditions occur in the distribution network control process, the main network EMS system can also learn in time, collect the current control result immediately, unnecessary waiting time is saved, and the control process interaction file comprises a control flow identification ID, a control state, a control mode, a cut-off demarcation switch and a load.
2. The method for data interaction between the main distribution network and the distribution network for precisely cutting loads of the power grid in a systematic manner according to claim 1 is characterized by comprising the following steps: in the S1 MODEL data interaction establishing process, the MODEL data interaction file naming rule is 'regional abbreviation_DMS_MODEL_time, month, day, month, minute, second and CIME', and the file transmission frequency is 1 time/day.
3. The method for data interaction between the main distribution network and the distribution network for precisely cutting loads of the power grid in a systematic manner according to claim 1 is characterized by comprising the following steps: the naming rule of the real-time DATA interaction file in the S2 real-time DATA interaction establishing process is 'regional abbreviation_DMS_YC_DATA_time, month, day, month, minute, second and DT', and the file transmission period is 5 minutes/times.
4. The method for data interaction between the main distribution network and the distribution network for precisely cutting loads of the power grid in a systematic manner according to claim 1 is characterized by comprising the following steps: the distribution network control sequence list interaction file in the S4 control instruction sending process comprises a control flow identifier ID, a control state, a control mode, a sequence number and a distribution network switch ID, the naming rule of the distribution network control sequence list file issued by the main network is 'regional abbreviation_ EMStoDMS _YK_time of year, month, day, minute, second and DT', and the file transmission mode is instant triggering.
5. The method for data interaction between the main distribution network and the distribution network for precisely cutting loads of the power grid in a systematic manner according to claim 1 is characterized by comprising the following steps: and in the S5 control process interaction stage, the naming rule of the control process interaction file returned by the distribution network to the main network is 'regional abbreviation_ DMStoEMS _YK_time, month, day, minute and second.DT', and the file type comprises a control execution confirmation file, a control execution process file and a control execution result file.
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