CN113410909A - Method for displaying regional new energy bearing capacity in real time - Google Patents
Method for displaying regional new energy bearing capacity in real time Download PDFInfo
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- CN113410909A CN113410909A CN202110683011.4A CN202110683011A CN113410909A CN 113410909 A CN113410909 A CN 113410909A CN 202110683011 A CN202110683011 A CN 202110683011A CN 113410909 A CN113410909 A CN 113410909A
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- new energy
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a method for displaying regional new energy bearing capacity in real time, which is technically characterized by comprising the following steps of: step 1, respectively collecting a regional power load PL and a regional existing new energy capacity PD; step 2, collecting a device operation limit value SE and a device operation margin KR in the region; calculating the new energy bearing capacity PM0 which can be installed in a certain period of the area in real time; and 4, calculating the maximum new energy bearing capacity PM, and displaying the maximum new energy capacity PM which can be installed in a certain section of the area in real time. The method is reasonable in design, can calculate the maximum new energy bearing capacity PM which can be installed in a certain section of the area in real time, displays the maximum new energy bearing capacity which can be installed in a certain section of the area in real time, can replace bearing capacity evaluation work, saves a large amount of manual time, can be used for planning and analyzing a power grid by using the deterioration or optimization trend of the bearing capacity, and provides guidance for the operation of regional power grid equipment.
Description
Technical Field
The invention belongs to the field of power generation, relates to a new energy bearing capacity technology, and particularly relates to a method for displaying regional new energy bearing capacity in real time.
Background
The new energy power generation is a process of realizing power generation by utilizing various forms of energy except the traditional energy. In recent years, new energy is greatly developed, grid-connected power cannot be completely absorbed by local loads, reverse tide occurs to a system, and regional power overline or important equipment alarm occurs in severe cases. Therefore, relevant departments in the country need to analyze the current situation and the allowance of the bearing capacity of the primary new energy to obtain the current situation of the development of the new energy in each region, and provide valuable data for planning and constructing the new energy in the next step.
In a substation control room and a power grid line control room, the bearing capacity of distributed power supplies of a transformer, a bus and a line needs to be calculated, and in the prior art, the bearing capacity of each distributed power supply can only be acquired and calculated respectively, and the bearing capacity of the distributed power supplies in the whole area cannot be reflected integrally. In addition, in the prior art, only a limiting condition is provided for the bearing capacity of the power grid, the calculation method is also only rough calculation, and a large amount of manpower, material resources and time are consumed for calculation each time. Therefore, how to effectively acquire the field data of the regional new energy power generation, obtain the bearing capacity of the regional new energy and analyze the tidal current situation in the related region is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for displaying the bearing capacity of the regional new energy in real time, which is reasonable in design, accurate and efficient.
The invention solves the technical problems in the prior art by adopting the following technical scheme:
a method for displaying regional new energy bearing capacity in real time comprises the following steps:
step 1, respectively collecting a regional power load PL and a regional existing new energy capacity PD;
step 2, collecting a device operation limit value SE and a device operation margin KR in the region;
step 3, calculating the bearing capacity PM0 of the new energy which can be installed in a certain period of the area in real time;
and 4, calculating the maximum new energy bearing capacity PM, and displaying the maximum new energy capacity PM which can be installed in a certain section of the area in real time.
Also, the regions include a transformer region and a bus bar region.
And in the step 1, a data acquisition unit is adopted to acquire the electric load PL and the new energy capacity PD, wherein the electric load PL is obtained by accumulating a plurality of electric energy meter meters of users in the region, and the new energy capacity PD is obtained by accumulating a plurality of electric energy meter meters of new energy stations in the region.
And the equipment in the area comprises a transformer, a bus or equipment on a line, the operation limit value of the equipment is derived from the specification of the equipment, and the operation margin KR of the equipment is a constant and ranges from 0 to 1.
And in the step 3, the new energy bearing capacity is calculated by adopting the following method: PM0 ═ PL-PD.
Moreover, the specific implementation method of the step 4 is as follows: if the new energy bearing capacity PM0 is less than or equal to 0, the maximum new energy bearing capacity PM is 0; if the new energy bearing capacity PM0 is greater than 0, the maximum new energy bearing capacity PM is (PL-PD + SE) × KR; and displaying the maximum new energy capacity which can be installed in a certain section of the area in real time, and simultaneously, sending a signal to alarm or cutting off the load of the new energy when the data exceeds the limit.
The invention has the advantages and positive effects that:
1. the method is reasonable in design, the maximum new energy bearing capacity PM which can be installed in a certain section of the area can be calculated in real time by collecting the electric load PL of a transformer area or a bus area and the existing new energy capacity PD of the area and collecting the equipment operation limit value SE and the equipment operation margin KR in the area, so that the maximum new energy capacity which can be installed in the certain section of the area can be displayed in real time, and once data exceeds the limit, a signal is sent to alarm or the new energy load is cut off to respond. The method can replace the bearing capacity evaluation work, save a large amount of labor time, and can be used for planning and analyzing the power grid according to the deterioration or optimization trend of the bearing capacity and provide guidance for the operation of regional power grid equipment.
2. The invention can efficiently collect field data, calculate the bearing capacity of the relevant area in real time, analyze the tide situation in the relevant area by adopting the dynamically changed data, not only can obtain the peak valley value of the bearing capacity, but also find out the rule by utilizing the randomly changed data, and continuously improve the safety and stability level of the power grid in the planning, construction and operation of the power grid.
3. The invention can display the bearing capacity data in real time, and store the bearing capacity data as historical data to provide more scientific data for power grid construction.
4. The method reflects the regional operation trend through the data peak value change, and can accurately reflect the new energy margin change condition.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a small value diagram according to the present invention;
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A method for displaying a regional new energy bearing capacity in real time, as shown in fig. 1, includes the following steps:
step 1, respectively acquiring the electric load PL and the existing new energy capacity PD of a transformer area or a bus area.
In this embodiment, a data collector is used to collect a power load PL and a new energy capacity PD, where the power load PL is derived from the accumulation of a plurality of electric energy meters of users in this area, and the new energy capacity PD is derived from the accumulation of a plurality of electric energy meters of new energy stations in this area. The data acquisition unit adopts a standard 4-20mA current interface, is connected with each user electric energy meter through the 4-20mA current interface to acquire the electric load of the electric energy meter, and is connected with each new energy station electric energy meter through the 4-20mA current interface to acquire the new energy capacity of the new energy station electric energy meter.
And the data acquired by the data acquisition unit is sent to the system host.
And 2, collecting a device operation limit value SE and a device operation margin KR in the region.
The equipment in the area includes transformers, bus bars or equipment on the line, and the equipment operation limit values are generally derived from equipment specifications.
The operating margin KR of the equipment is constant and ranges from 0 to 1, and is generally 0.8.
Through the two steps, a plurality of bearing force values in the same area can be collected, wherein the bearing force values comprise the area electric load PL, the area existing new energy capacity PD, the equipment operation limit value SE and the equipment operation margin KR. The information collected by the data collector is transmitted to the system host.
And 3, calculating the maximum new energy bearing capacity PM which can be installed in a certain period of the area in real time.
After receiving the area power load PL, the area existing new energy capacity PD, the equipment operation limit value SE and the equipment operation margin KR, the system host calculates the new energy bearing capacity PM0 in real time, wherein the calculation formula is as follows:
PM0＝PL-PD。
and 4, calculating the maximum new energy bearing capacity PM, and displaying the maximum new energy capacity PM which can be installed in a certain section of the area in real time.
In this step, according to the calculation result in step 3, that is, the distributed power supply bearing capacity of the transformer, the bus, and the line, the method for calculating the maximum new energy bearing capacity PM is as follows:
if the new energy bearing capacity PM0 is less than or equal to 0, the maximum new energy bearing capacity PM is 0; if the new energy bearing capacity PM0 > 0, the maximum new energy bearing capacity PM is (PL-PD + SE) × KR,
in the step, when the calculation result exceeds the limit, a signal alarm is sent out or the response new energy load is cut off. Output signal for a single display value (since there are multiple bearing force values in the same area): PM0, PM, alarm 1, alarm 2, alarm 3. The method comprises the following specific steps:
1. displaying the maximum new energy capacity which can be installed in a certain section of the area in real time;
2. when the PM0 is equal to 0, an alarm signal 1 is output, and the area load is close to the critical value;
3. PM0<0, output alarm signal 2, indicating that the zone has been reversed;
4. PM is larger than or equal to PM of superior equipment, and an alarm signal 3 is output to indicate that the bearing capacity of the superior equipment is exceeded;
5. and a small value taking function is adopted, so that the numerical value of the lower-level equipment cannot exceed the numerical value of the upper-level equipment. As shown in fig. 2, if the PM of the 220 bus is 10, the PM of the 220 transformer is 12, the PM is automatically selected to be 10, and the PM can only be smaller than the upper-level equipment, so that the PM of the 220KV transformer can only be selected to be 10; likewise, the maximum value of the 110kV bus PM and the maximum value of the 35kV bus PM can only be 10, and if the actual calculation is less than 10, the actual value is obtained. The voltage level is higher than the current level, and the voltage level is the previous level of the current level in a mutual relation.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (6)
1. A method for displaying regional new energy bearing capacity in real time is characterized by comprising the following steps: the method comprises the following steps:
step 1, respectively collecting a regional power load PL and a regional existing new energy capacity PD;
step 2, collecting a device operation limit value SE and a device operation margin KR in the region;
step 3, calculating the bearing capacity PM0 of the new energy which can be installed in a certain period of the area in real time;
and 4, calculating the maximum new energy bearing capacity PM, and displaying the maximum new energy capacity PM which can be installed in a certain section of the area in real time.
2. The method for displaying the regional new energy bearing capacity in real time according to claim 1, wherein the method comprises the following steps: the zones include a transformer zone and a bus bar zone.
3. The method for displaying the regional new energy bearing capacity in real time according to claim 1 or 2, wherein the method comprises the following steps: in the step 1, a data acquisition unit is adopted to acquire the power load PL and the new energy capacity PD, wherein the power load PL is obtained by accumulating a plurality of electric energy meter meters of users in the region, and the new energy capacity PD is obtained by accumulating a plurality of electric energy meter meters of new energy stations in the region.
4. The method for displaying the regional new energy bearing capacity in real time according to claim 1 or 2, wherein the method comprises the following steps: the equipment in the area comprises a transformer, a bus or equipment on a line, the operation limit value of the equipment is derived from an equipment specification, and the operation margin KR of the equipment is a constant and ranges from 0 to 1.
5. The method for displaying the regional new energy bearing capacity in real time according to claim 1 or 2, wherein the method comprises the following steps: and 3, calculating the bearing capacity of the new energy by adopting the following method: PM0 ═ PL-PD.
6. The method for displaying the regional new energy bearing capacity in real time according to claim 1 or 2, wherein the method comprises the following steps: the specific implementation method of the step 4 comprises the following steps: if the new energy bearing capacity PM0 is less than or equal to 0, the maximum new energy bearing capacity PM is 0; if the new energy bearing capacity PM0 is greater than 0, the maximum new energy bearing capacity PM is (PL-PD + SE) × KR; and displaying the maximum new energy capacity which can be installed in a certain section of the area in real time, and simultaneously, sending a signal to alarm or cutting off the load of the new energy when the data exceeds the limit.
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| CN202110683011.4A CN113410909A (en) | 2021-06-21 | 2021-06-21 | Method for displaying regional new energy bearing capacity in real time |
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| CN202110683011.4A CN113410909A (en) | 2021-06-21 | 2021-06-21 | Method for displaying regional new energy bearing capacity in real time |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305433A (en) * | 2015-11-10 | 2016-02-03 | 中国能源建设集团广东省电力设计研究院有限公司 | Maximum power permeability calculation method for distributed power supply in connection to power distribution network |
| CN107492908A (en) * | 2017-09-25 | 2017-12-19 | 国网冀北电力有限公司秦皇岛供电公司 | A kind of feeder line Method for optimized planning based on distributed power source access |
| CN110555786A (en) * | 2019-09-10 | 2019-12-10 | 国家电网有限公司 | Power grid source bearing capacity evaluation method based on data driving and scene analysis method |
-
2021
- 2021-06-21 CN CN202110683011.4A patent/CN113410909A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305433A (en) * | 2015-11-10 | 2016-02-03 | 中国能源建设集团广东省电力设计研究院有限公司 | Maximum power permeability calculation method for distributed power supply in connection to power distribution network |
| CN107492908A (en) * | 2017-09-25 | 2017-12-19 | 国网冀北电力有限公司秦皇岛供电公司 | A kind of feeder line Method for optimized planning based on distributed power source access |
| CN110555786A (en) * | 2019-09-10 | 2019-12-10 | 国家电网有限公司 | Power grid source bearing capacity evaluation method based on data driving and scene analysis method |
Non-Patent Citations (1)
| Title |
|---|
| 桂前进;江千军;徐瑞翔: "关于电力系统分布式电源接入电网承载力估算研究", 通讯世界, vol. 27, no. 05, pages 172 - 173 * |
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