CN104578079B - Power grid section power control method for automatic power generation control - Google Patents
Power grid section power control method for automatic power generation control Download PDFInfo
- Publication number
- CN104578079B CN104578079B CN201410660623.1A CN201410660623A CN104578079B CN 104578079 B CN104578079 B CN 104578079B CN 201410660623 A CN201410660623 A CN 201410660623A CN 104578079 B CN104578079 B CN 104578079B
- Authority
- CN
- China
- Prior art keywords
- power
- section
- reg
- value
- ctrl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a power grid section power control method for automatic power generation control, which comprises the following steps of: (1) determining the relationship between the line, the unit and the section, and the control value and the limiting value of the section; (2) acquiring the measurement of the tidal current of a related line forming a section in real time, and judging whether the measurement of the tidal current of the line is adopted or not according to the state of the line; if the measurement of the line is adopted, the step (3) is carried out; (3) calculating section power according to the line power flow, and judging a control area where the section power is located; (4) calculating to obtain the expected power adjustment quantity of each unit; (5) redistributing the power adjustment quantity of each unit according to the control area where the section power is located; (6) and adjusting power by the generator set. The method divides the power of the section of the power grid, is favorable for implementing fine regulation and control on the section power, simultaneously considers the requirements of the section power of the power grid and the regulation power of the whole power grid, and improves the safe and stable operation level of the power grid.
Description
Technical Field
The invention relates to a power Control method, in particular to a power grid section power Control method based on Automatic Generation Control (AGC), and belongs to the technical field of power system scheduling.
Background
The AGC technology is characterized in that the active power of a generator in a local control area in a power system is adjusted, so that the power of a connecting line between the local control area and other control areas and the system frequency are operated in a normal range, the constantly changing power requirements of users are met, and the whole power system is in a safe, high-quality, economic and environment-friendly operation state.
The control of the power grid section power has important significance for the safe and stable operation of the power grid, the existing conditions are fully utilized, the reasonable control strategy is designed, the organic coordination of the section power control target and the conventional AGC control target is realized, the safe and stable operation of the power grid is facilitated, the automatic regulation and control capability of the whole power grid is improved, and the manual regulation and control pressure is reduced.
In the Chinese invention application with the application number of 200910025042.X, an AGC hierarchical coordination control method based on stable section safety constraint is disclosed, the method divides a control area into a plurality of sub-areas, then all online controllable units in the sub-areas are respectively equivalent into a virtual unit, the parameters of the virtual unit are obtained by parameter collection of each unit, each virtual unit bears the regulating quantity distributed by a superior control area, and finally the regulating quantity is distributed to each actual unit for execution. The method has certain limitations, for example, each unit is required to belong to only one virtual unit (or sub-area), while the number of closed areas (or sections) in the actual power grid is small, and each unit often corresponds to a plurality of sections, so that the method can be used for controlling only a few power grids with closed characteristics.
In the prior art, other section power control technologies based on safety constraint scheduling or sensitivity have high dependence degree on network analysis software, and when the state estimation function is abnormal or the power flow calculation is not converged, the methods cannot be used, and the methods cannot meet the high reliability requirement of section power control.
Disclosure of Invention
In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a power control method for a power grid section for automatic power generation control.
In order to achieve the purpose, the invention adopts the following technical scheme:
a power grid section power control method for automatic power generation control comprises the following steps:
(1) determining the relationship between the line, the unit and the section, and the control value and the limiting value of the section;
(2) acquiring the measurement of the tidal current of a related line forming a section in real time, and judging whether the measurement of the tidal current of the line is adopted or not according to the state of the line; if the measurement of the line is adopted, the step (3) is carried out;
(3) calculating section power according to the line power flow, and judging a control area where the section power is located;
the section power is the sum of the effective quantity measurement of all running lines forming the section;
(4) calculating to obtain the expected power adjustment quantity of each unit;
(5) redistributing the power adjustment quantity of each unit according to the control area where the section power is located;
(6) and adjusting power by the generator set.
Preferably, in the step (3), when a section power value is located in a normal area, calculating an expected adjustment amount reg of power of each unit, and then calculating the expected adjustment amount reg of power of the section according to a relation between the section and the unit, if (value + reg) > ctrl _ h or (value + reg) < ctrl _ l, resetting reg to be (ctrl _ h-value) or (ctrl _ l-value), otherwise, normally adjusting;
the expected adjustment amount of the cross-section power is represented as reg, the actual value of the cross-section power is represented as value, the upper control value of the cross-section power is represented as ctrl _ h, and the lower control value of the cross-section power is represented as ctrl _ l.
Preferably, in the step (3), when the section power value is located in the upper emergency area, the expected adjustment amount reg of the power of each unit is calculated, and then the expected adjustment amount reg of the power of the section is calculated according to the relation between the section and the unit, and if (value + reg) > ctrl _ h and reg > 0, the adjustment is stopped.
Wherein preferably, to prevent deterioration of the conventional AGC control index, the desired adjustment amount reg is reset to 0; if (value + reg) is more than or equal to ctrl _ l and reg is less than 0, keeping normal adjustment; if (value + reg) < ctrl _ l, the desired adjustment amount reg is reset to (ctrl _ l-value).
Preferably, in the step (3), when the section power value is located in the lower emergency area, calculating the expected adjustment amount reg of the power of each unit, calculating the expected adjustment amount reg of the power of the section according to the relation between the section and the unit, and if (value + reg) is less than or equal to ctrl _ h and reg is greater than 0, adjusting the section power to the normal area direction; if (value + reg) < ctrl _ l and reg < 0, the adjustment is stopped.
Preferably, in order to prevent the conventional AGC control index from being deteriorated, the expected adjustment quantity reg of the section power is reset to 0; if (value + reg) > ctrl _ h, the desired adjustment amount for the cross-sectional power reg is reset to (ctrl _ h-value).
Preferably, in the step (3), when the section power value is located in the out-of-limit region, calculating the expected adjustment amount of the power of each unit, calculating the expected adjustment amount reg of the power of the section according to the relation between the section and the unit, and if reg is greater than 0, resetting reg to be (lim it _ h-value); if (value + reg) is more than or equal to ctrl _ l and reg is less than 0, adjusting the section power to the normal area direction; if (value + reg) < ctrl _ l, reg is reset to (ctrl _ l-value).
Preferably, in the step (3), when the section power value is located in the lower limit-crossing region, calculating the expected adjustment amount of the power of each unit, then calculating the expected adjustment amount reg of the power of the section according to the relation between the section and the unit, and if (value + reg) is less than or equal to ctrl _ h and reg is greater than 0, adjusting the section power to the direction of the normal region; if reg < 0, resetting reg to (limit _ l-value); if (value + reg) > ctrl _ h, reg is reset to (ctrl _ h-value).
Preferably, in the step (1), when the set section control parameter is not reasonable, the desired adjustment amount of the section power is forcibly set to 0.
Preferably, when a plurality of sections provide different control requirements for the same unit, the processing method comprises the following steps:
1) the adjustment directions required by a plurality of sections for the same unit are consistent, but the allowed adjustment amounts are different, and the adjustment power of the unit is based on the section with the minimum allowed adjustment amount.
2) The adjustment directions required by a plurality of sections for the same unit are not consistent, or when the adjustment power required by a certain section for the unit is 0, the adjustment power of the unit is 0, and the section power control adjustment is carried by other related units.
Compared with the prior art, the invention has the following beneficial effects:
1) the safety level of the power grid section power is divided, so that grading alarm and fine regulation and control of the section power are facilitated according to the section power condition.
2) The requirements of the section power of the power grid and the whole-grid regulation power are considered, and the safe and stable operation level of the power grid is favorably improved.
3) The method is independent of network analysis technology, simple in principle and easy to implement and maintain.
Drawings
FIG. 1 is a flow chart of a method of AGC based power control of a power grid section;
FIG. 2 is a schematic diagram of the division of a cross-sectional power control region;
fig. 3 is a data flow diagram of an AGC-based power control method for a power grid section.
Detailed Description
The technical contents of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a power grid section power control method for automatic power generation control, which comprises the following steps of:
(1) determining the relationship between the line, the unit and the section, and the control value and the limiting value of the section;
(2) acquiring the measurement of the tidal current of a related line forming a section in real time, and judging whether the measurement of the tidal current of the line is adopted or not according to the state of the line; if the measurement of the line is adopted, the step (3) is carried out;
(3) calculating section power according to the line power flow, and judging a control area where the section power is located; the section power is the sum of the effective quantity measurement of all running lines forming the section;
(4) calculating to obtain the expected power adjustment quantity of each unit;
(5) redistributing the power adjustment quantity of each unit according to the control area where the section power is located;
(6) and adjusting power by the generator set.
The basic idea of the invention is to combine the power control strategy of the power grid section with the existing AGC control strategy for use, and further consider the safety constraint of the power grid section on the premise of meeting the existing AGC control strategy.
The control of the section power aims to prevent the section power from exceeding the limit, so that the section to be controlled and the power control value and the limit value thereof are given. For convenience of use, hereinafter, the expected adjustment amount of the section power is represented as reg, the actual value of the section power is represented as value, the upper control value of the section power is represented as ctrl _ h, the lower control value of the section power is represented as ctrl _ l, the upper limit value of the section power is represented as limit _ h, and the lower limit value of the section power is represented as lim it _ l, and the section power is divided into five intervals according to the power control value and the limit value, as shown in fig. 2.
When a certain section power value is in a normal area, namely ctrl _ l is not less than value and not more than ctrl _ h, calculating the expected adjustment amount of power of each unit by using a conventional AGC control strategy, calculating the expected adjustment amount reg of the section power according to the relation between the section and the unit, and if (value + reg) > ctrl _ h or (value + reg) < ctrl _ l, resetting reg to be (ctrl _ h-value) or (ctrl _ l-value), otherwise, normally adjusting.
When the section power value is in an upper critical zone, namely ctrl _ h is greater than value and is not greater than lim it _ h, calculating the expected adjustment quantity of the power of each unit by using a conventional AGC control strategy, and then calculating the expected adjustment quantity reg of the section power according to the relation between the section and the units, wherein if (value + reg) > ctrl _ h and reg is greater than 0, the AGC still adjusts the section power to the direction of an upper limit value, and the adjustment should be stopped at the moment, but in order to prevent the conventional AGC control index from being deteriorated, the reg is reset to 0; if (value + reg) is greater than or equal to ctrl _ l and reg is less than 0, it indicates that the AGC is adjusting the section power to the normal region direction, so the original AGC adjustment should not be interfered and allowed to be adjusted normally; if (value + reg) < ctrl _ l, it indicates that the AGC is about to adjust the cross-sectional power in the reverse direction and exceed the lower control value, and reg is therefore reset to (ctrl _ l-value).
When the section power value is in the lower emergency zone, namely lim it _ l is not less than the value and not more than ctrl _ l, calculating the expected adjustment quantity of the power of each unit by using a conventional AGC control strategy, calculating the expected adjustment quantity reg of the section power according to the relation between the section and the units, and if (value + reg) is not more than ctrl _ h and reg is more than 0, indicating that the AGC is adjusting the section power to the normal zone direction, so that the original AGC adjustment is not interfered and is normally adjusted; if (value + reg) < ctrl _ l and reg < 0, it means that the AGC is still adjusting the cross-sectional power towards the lower limit, at which point the adjustment should be stopped, but reg is reset to 0 in order to prevent deterioration of the conventional AGC control index; if (value + reg) > ctrl _ h, indicating that the AGC is going to adjust the cross-section power in the reverse direction and exceeds the upper control value, reg is reset to (ctrl _ h-value).
When the section power value is positioned in an upper limit crossing region, namely the value is larger than lim it _ h, calculating the expected adjustment quantity of the power of each unit by using a conventional AGC control strategy, calculating the expected adjustment quantity reg of the section power according to the relation between the section and the unit, if reg is larger than 0, indicating that the AGC still adjusts the section power in a direction beyond an upper limit value, and resetting reg to be (lim it _ h-value) to prevent the safety of the power grid from being damaged; if (value + reg) is greater than or equal to ctrl _ l and reg is less than 0, it indicates that the AGC is adjusting the section power to the normal region direction, so the original AGC adjustment should not be interfered and allowed to be adjusted normally; if (value + reg) < ctrl _ l, it indicates that the AGC is about to adjust the cross-sectional power in the reverse direction and is less than the lower control value, and reg is therefore reset to (ctrl _ l-value).
When the section power value is positioned in the lower limit-crossing region, namely the value is less than limit _ l, calculating the expected adjustment quantity of the power of each unit by using a conventional AGC control strategy, calculating the expected adjustment quantity reg of the section power according to the relation between the section and the units, and if (value + reg) is less than or equal to ctrl _ h and reg is greater than 0, indicating that the AGC is adjusting the section power to the direction of a normal region, so that the original AGC adjustment cannot be interfered and is normally adjusted; if reg is less than 0, which indicates that the AGC still adjusts the section power to the direction beyond the lower limit value, and in order to prevent the safety of the power grid from being damaged, reg is reset to (lim it _ l-value); if (value + reg) > ctrl _ h, it indicates that the AGC is about to adjust the cross-section power in the reverse direction and exceed the upper control value, and reg is therefore reset to (ctrl _ h-value).
When the set section control parameter is not reasonable, for example, the upper control value of the section is less than or equal to the lower control value or the upper limit value is less than or equal to the lower limit value, namely ctrl _ h is less than or equal to ctrl _ l or lim it _ h is less than or equal to lim it _ l, the desired adjustment amount of the section power is forcibly set to 0.
When a unit in an actual power grid often corresponds to multiple sections, the situation that the multiple sections provide different control requirements for the same unit occurs, and a processing method of the situation is as follows:
1) the adjustment directions required by a plurality of sections for the same unit are consistent, but the allowed adjustment amounts are different, and the adjustment power of the unit is based on the section with the minimum allowed adjustment amount.
2) The adjustment directions required by a plurality of sections for the same unit are not consistent, or when the adjustment power required by a certain section for the unit is 0, the adjustment power of the unit is 0, and the section power control adjustment is borne by other related units.
The data flow direction of the control method is shown in fig. 3, regional control deviation and section control deviation can be generated due to changes of load and power flow in real-time operation of a power grid, regional control requirements can be obtained by adopting a conventional AGC control strategy according to the regional control deviation, and further the expected adjustment quantity of the power of each unit can be obtained; the section control requirements can be obtained according to the section control deviation, the above-described method is adopted to carry out coordination optimization on the section control deviation and the section control deviation in an AGC system, the power adjustment quantity of each unit is recalculated, a control instruction is sent to each unit to be executed, the unit executes the control command to cause power change, the power flow distribution of the whole power grid is influenced, the regional control deviation and the section control deviation are reduced, and the periodic operation forms a closed-loop control system.
Because the adjustment range of the AGC unit is limited, the section power is controlled only by using the AGC, the control capability is limited, the AGC can adjust the output of the unit, but the automatic load removal or the operation of removing the generator unit cannot be carried out, and therefore, other means are combined to realize the optimal control of the power grid section power.
The method for controlling the power of the section of the power grid for automatic power generation control provided by the invention is explained in detail above. Any obvious modifications to the invention, which would occur to those skilled in the art, without departing from the true spirit of the invention, would constitute a violation of the patent rights of the invention and would carry a corresponding legal responsibility.
Claims (9)
1. A power grid section power control method for automatic power generation control is characterized by comprising the following steps:
(1) determining the relationship between the line, the unit and the section, and the control value and the limiting value of the section;
(2) acquiring the measurement of the tidal current of a related line forming a section in real time, and judging whether the measurement of the tidal current of the line is adopted or not according to the state of the line; if the measurement of the line is adopted, the step (3) is carried out;
(3) calculating section power according to the line power flow, and judging a control area where the section power is located; the section power is the sum of the effective quantity measurement of all running lines forming the section;
(4) calculating to obtain the expected power adjustment quantity of each unit;
(5) redistributing the power adjustment quantity of each unit according to the control area where the section power is located; wherein, when facing the condition that a plurality of sections put forward different control requirements to same unit, if: 1) the adjustment directions of the multiple sections required by the same unit are consistent, but the allowed adjustment amounts are different, and the adjustment power of the unit is based on the section with the minimum allowed adjustment amount; 2) the adjustment directions required by a plurality of sections for the same unit are not consistent, or when the adjustment power required by a certain section for the unit is 0, the adjustment power of the unit is 0, and the section power control adjustment is carried by other related units;
(6) and adjusting power by the generator set.
2. A power grid section power control method as claimed in claim 1, characterized by:
in the step (3), when a section power value is located in a normal area, calculating an expected adjustment amount reg of power of each unit, and then calculating the expected adjustment amount reg of power of the section according to a relation between the section and the unit, if (value + reg) > ctrl _ h or (value + reg) < ctrl _ l, resetting reg to be (ctrl _ h-value) or (ctrl _ l-value), otherwise, normally adjusting;
the expected adjustment amount of the cross-section power is represented as reg, the actual value of the cross-section power is represented as value, the upper control value of the cross-section power is represented as ctrl _ h, and the lower control value of the cross-section power is represented as ctrl _ l.
3. A power grid section power control method as claimed in claim 1, characterized by:
in the step (3), when the section power value is located in the upper emergency area, calculating the expected adjustment amount reg of the power of each unit, and then calculating the expected adjustment amount reg of the power of the section according to the relation between the section and the unit, and if (value + reg) > ctrl _ h and reg > 0, stopping adjustment.
4. A power grid section power control method as claimed in claim 3, characterized by:
to prevent deterioration of the conventional AGC control index, the desired adjustment amount reg is reset to 0; if (value + reg) is more than or equal to ctrl _ l and reg is less than 0, keeping normal adjustment; if (value + reg) < ctrl _ l, the desired adjustment amount reg is reset to (ctrl _ l-value).
5. A power grid section power control method as claimed in claim 1, characterized by:
in the step (3), when the section power value is in the lower emergency area, calculating the expected adjustment quantity reg of the power of each unit, calculating the expected adjustment quantity reg of the power of the section according to the relation between the section and the unit, and if the value + reg is less than or equal to ctrl _ h and reg is greater than 0, adjusting the section power to the direction of the normal area; if (value + reg) < ctrl _ l and reg < 0, the adjustment is stopped.
6. A power grid section power control method as claimed in claim 5, characterized by:
in order to prevent the conventional AGC control index from being deteriorated, the expected adjustment quantity reg of the section power is reset to 0; if (value + reg) > ctrl _ h, the desired adjustment amount for the cross-sectional power reg is reset to (ctrl _ h-value).
7. A power grid section power control method as claimed in claim 1, characterized by:
in the step (3), when the section power value is located beyond the upper limit region, calculating the expected adjustment amount of the power of each unit, calculating the expected adjustment amount reg of the power of the section according to the relation between the section and the unit, and if reg is larger than 0, resetting reg to be (limit _ h-value); if (value + reg) is more than or equal to ctrl _ l and reg is less than 0, adjusting the section power to the normal area direction; if (value + reg) < ctrl _ l, reg is reset to (ctrl _ l-value).
8. A power grid section power control method as claimed in claim 1, characterized by:
in the step (3), when the section power value is located in the lower limit-crossing region, calculating the expected adjustment quantity of the power of each unit, calculating the expected adjustment quantity reg of the power of the section according to the relation between the section and the unit, and if the value + reg is less than or equal to ctrl _ h and reg is greater than 0, adjusting the power of the section to the direction of a normal region; if reg < 0, resetting reg to (limit _ l-value); if (value + reg) > ctrl _ h, reg is reset to (ctrl _ h-value).
9. A power grid section power control method as claimed in claim 1, characterized by:
in the step (1), when the set section control parameter is not reasonable, the section power expected adjustment amount is forcibly set to 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410660623.1A CN104578079B (en) | 2014-11-19 | 2014-11-19 | Power grid section power control method for automatic power generation control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410660623.1A CN104578079B (en) | 2014-11-19 | 2014-11-19 | Power grid section power control method for automatic power generation control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104578079A CN104578079A (en) | 2015-04-29 |
| CN104578079B true CN104578079B (en) | 2020-01-14 |
Family
ID=53093551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410660623.1A Expired - Fee Related CN104578079B (en) | 2014-11-19 | 2014-11-19 | Power grid section power control method for automatic power generation control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104578079B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451565B (en) * | 2016-08-15 | 2019-03-15 | 国家电网公司 | A kind of power plant's optimization submitting on-line analysis based on perturbation theory |
| CN109873428B (en) * | 2019-04-10 | 2022-06-14 | 国家电网公司华中分部 | Multi-section power control method and system for large power grid |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1571746T3 (en) * | 2004-03-05 | 2019-01-07 | Gamesa Innovation & Tech Sl | Active power control system of a wind farm |
| CN101552474B (en) * | 2009-02-16 | 2011-05-04 | 国电南瑞科技股份有限公司 | AGC hierarchical coordinative control method based on security constraint of stable cross section |
| CN102222906A (en) * | 2010-04-14 | 2011-10-19 | 河南省电力公司 | Laminated and partitioned automatic current control method applicable to multi-target power grid |
| CN102082434B (en) * | 2011-03-02 | 2013-01-30 | 国电南瑞科技股份有限公司 | Optimal strategy and performance evaluation method controlled by multi-target section tidal current |
-
2014
- 2014-11-19 CN CN201410660623.1A patent/CN104578079B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104578079A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108493950B (en) | Ultra-high voltage direct current near-region multi-stage power grid coordinated automatic voltage control method and system | |
| CN105162172B (en) | A kind of grid-connected photovoltaic power generation station power automatic control system | |
| US20140306534A1 (en) | Pmu based distributed generation control for microgrid during islanding process | |
| CN102437809B (en) | Method for controlling speed regulating system of hydroelectric unit in island mode | |
| CN111030193A (en) | Control method, device and system for wind power plant participating in rapid frequency modulation and voltage regulation of power grid | |
| CN104181895A (en) | Strategy for optimizing short-term and ultra-short-term coordination rolling schedules adapting to access of new energy resources | |
| CN108683193B (en) | Voltage control method and device for power distribution network with distributed power supply | |
| CN103248056A (en) | Reactive voltage emergency control method in concentrated grid connecting area of wind power plant | |
| WO2021103482A1 (en) | Reactive power control method and apparatus for wind turbine generator set, and wind power plant | |
| CN104134994A (en) | Correction control method using AGC (Automatic Generation Control) for stabilizing section flow limit | |
| CN103337879A (en) | Regulation power dynamic optimization and distribution method with dead zone | |
| CN102684186A (en) | Active control method for electric power system with insufficient unit regulation capacity in load peak | |
| CN103777556A (en) | Priority adjusting method and system for primary frequency modulation of unit plant | |
| CN104578079B (en) | Power grid section power control method for automatic power generation control | |
| CN107230979B (en) | A kind of power grid automatic voltage optimal control method | |
| CN114759611A (en) | Load distribution method of hydropower plant level automatic power generation control system | |
| CN108108888B (en) | Active instruction cooperative control method and device for wind power generation and photovoltaic power generation | |
| CN104269871B (en) | Improve the method for the correct action qualification rate of thermal power generation unit primary frequency modulation | |
| CN112564032A (en) | Adjusting method for setting line of low-frequency load shedding protection device of city power grid | |
| CN117277447A (en) | Distributed photovoltaic reactive/active local regulation and control method and device | |
| CN108062117A (en) | A kind of more oxygen-eliminating device paired running water-level control apparatus | |
| CN104578174A (en) | Master station AGC unit control method based on instructions | |
| CN109888841B (en) | Load optimization distribution method for generator set | |
| CN102946097A (en) | Method for controlling thermal stability in real time by combining automatic gain control (AGC) system and manual scheduling | |
| CN109936142B (en) | Automatic control method and device for voltage of transmission and distribution integrated power grid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 Termination date: 20211119 |