CN107611995A - Primary frequency modulation optimization method - Google Patents
Primary frequency modulation optimization method Download PDFInfo
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- CN107611995A CN107611995A CN201710710442.9A CN201710710442A CN107611995A CN 107611995 A CN107611995 A CN 107611995A CN 201710710442 A CN201710710442 A CN 201710710442A CN 107611995 A CN107611995 A CN 107611995A
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Abstract
The present invention provides a kind of primary frequency modulation optimization method, including：1. optimal control signal takes source：DEH and DCS primary frequency modulation signals are taken from the control of DEH slips signal；2. correct DCS primary frequency modulation functions：Increase the primary frequency modulation coefficient of CCS sides, the primary frequency modulation compensation of CCS sides is reached calculated value；3. increase turbine main control PID regulator blocking function：When primary frequency modulation requires increase load, the output of locking turbine main control PID regulator is reduced, conversely, when primary frequency modulation requires to reduce load, the output increase of locking turbine main control PID regulator；4. increase target load instruction variable Rate function；5. adjusting CCS Coordinated Control Schemes, optimize CCS control parameters.The implementation of the present invention can eliminate actual contribution amount and the deviation of theory contribution amount make it that contribution amount is sufficient, can realize primary frequency modulation quick response, reach the state of therrmodynamic system safety and stability.
Description
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of optimization method of primary frequency modulation.
Background technology
As the requirement to power supply safety and quality improves constantly, how thermal power plant provides the height for meeting power network demand
Quality electricity, it is that electric power enterprise needs constantly to summarize, constantly gropes, the process continued to optimize, the quality of primary frequency modulation is the most
The key link, when each set grid-connection is run, by external load influence of change, mains frequency changes, the regulation of each unit
System participates in adjustment effect, changes the load of each unit institute band, is allowed to balance each other with external load, meanwhile, maintain mains frequency
Stabilization, this process is primary frequency modulation, but existing primary frequency modulation occurs in actual motion and is failure to actuate and contribution amount
The phenomenon of deficiency.
The content of the invention
In order to solve the above-mentioned technical problem the present invention carries a kind of primary frequency modulation optimization method, avoids the abnormal phenomenon of control
Generation, realize primary frequency modulation quick response, reduce mains frequency change.
The technical scheme is that：Primary frequency modulation optimization method, including：
1. optimal control signal takes source：DEH and DCS primary frequency modulation signals are taken from the control of DEH slips signal；
2. correct DCS primary frequency modulation functions：Increase the primary frequency modulation coefficient of CCS sides, the primary frequency modulation compensation of CCS sides is reached theoretical
Calculated value；
3. increase turbine main control PID regulator blocking function：When primary frequency modulation requires increase load, locking turbine main control PID
Adjuster output is reduced, conversely, when primary frequency modulation requires to reduce load, the output increase of locking turbine main control PID regulator；
4. increasing target load instruction variable Rate function increase target load instruction variable Rate function, suppress AGC instructions to once
Frequency modulation response time and the influence of contribution amount；
5. adjusting CCS Coordinated Control Schemes, optimize CCS control parameters.
Further, primary frequency modulation optimization method, the turbine main control PID regulator use the side of pulse signal locking
Formula.
Further, primary frequency modulation optimization method, suppression AGC instruction is to primary frequency modulation response time and contribution amount
The method of influence is, in load instruction early stage, AGC rate of load changes switch to 0MW/min, ensure that primary frequency modulation preferentially moves
Make, when actual load has response after primary frequency modulation action, primary frequency modulation direction of action is judged again, if primary frequency modulation instructs
Still instructed with AGC on the contrary, then set AGC load instructions as the 50% of normal AGC load rates, when primary frequency modulation order fulfillment,
When primary frequency modulation theory contribution amount demand is less than 1.5MW or primary frequency modulation instruction consistent with AGC command directions, AGC loads are born
Lotus command rate switches to normal speed.
The beneficial effects of the invention are as follows：
1. present invention amendment DCS primary frequency modulation functions, the deviation that can eliminate actual contribution amount and theory contribution amount cause contribution amount
It is sufficient；
2. present invention increase turbine main control PID regulator blocking function, can realize primary frequency modulation quick response；
3. present invention increase target load instruction variable Rate function, AGC instructions can be suppressed to primary frequency modulation response time and contribution
The influence of amount；
4. the present invention can reach primary frequency modulation and AGC response speeds by continuing to optimize adjustment CCS Coordinated Control Scheme parameters
It hurry up, contribution amount foot, the state of therrmodynamic system safety and stability.
Brief description of the drawings
Fig. 1 is embodiment of the present invention flow chart.
Embodiment
Clearly complete description is done to the present invention below in conjunction with the accompanying drawings, so that those skilled in the art need not make
Under conditions of creative work, it can fully implement the present invention.
The present invention embodiment be：Primary frequency modulation optimization method, including：
1. optimal control signal takes source：DEH and DCS primary frequency modulation signals are taken from the control of DEH slips signal；
2. correct DCS primary frequency modulation functions：Increase the primary frequency modulation coefficient of CCS sides, the primary frequency modulation compensation of CCS sides is reached theoretical
Calculated value；
3. increase turbine main control PID regulator blocking function：When primary frequency modulation requires increase load, locking turbine main control PID
Adjuster output is reduced, conversely, when primary frequency modulation requires to reduce load, the output increase of locking turbine main control PID regulator；
4. increasing target load instruction variable Rate function increase target load instruction variable Rate function, suppress AGC instructions to once
Frequency modulation response time and the influence of contribution amount；
5. adjusting CCS Coordinated Control Schemes, optimize CCS control parameters.
Further, primary frequency modulation optimization method, the turbine main control PID regulator use the side of pulse signal locking
Formula.
Further, primary frequency modulation optimization method, suppression AGC instruction is to primary frequency modulation response time and contribution amount
The method of influence is, in load instruction early stage, AGC rate of load changes switch to 0MW/min, ensure that primary frequency modulation preferentially moves
Make, when actual load has response after primary frequency modulation action, primary frequency modulation direction of action is judged again, if primary frequency modulation instructs
Still instructed with AGC on the contrary, then set AGC load instructions as the 50% of normal AGC load rates, when primary frequency modulation order fulfillment,
When primary frequency modulation theory contribution amount demand is less than 1.5MW or primary frequency modulation instruction consistent with AGC command directions, AGC loads are born
Lotus command rate switches to normal speed.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
Some variations that some of which part may be made are embodied the present invention principle, belong to protection scope of the present invention it
It is interior.
Claims (3)
1. primary frequency modulation optimization method, it is characterised in that including：
1）Optimal control signal takes source：DEH and DCS primary frequency modulation signals are taken from the control of DEH slips signal；
2）Correct DCS primary frequency modulation functions：Increase the primary frequency modulation coefficient of CCS sides, the primary frequency modulation compensation of CCS sides is reached theoretical
Calculated value；
3）Increase turbine main control PID regulator blocking function：When primary frequency modulation requires increase load, locking turbine main control PID
Adjuster output is reduced, conversely, when primary frequency modulation requires to reduce load, the output increase of locking turbine main control PID regulator；
4）Increase target load instruction variable Rate function, suppress influence of the AGC instructions to primary frequency modulation response time and contribution amount；
5）CCS Coordinated Control Schemes are adjusted, optimize CCS control parameters.
2. primary frequency modulation optimization method according to claim 1, it is characterised in that the turbine main control PID regulator is adopted
With the mode of pulse signal locking.
3. primary frequency modulation optimization method according to claim 1, it is characterised in that the suppression AGC instructions are to once adjusting
The method of the influence of frequency response time and contribution amount is, in load instruction early stage, AGC rate of load changes switch to 0MW/min,
Ensure that primary frequency modulation preferentially acts, when actual load has response after primary frequency modulation action, judge primary frequency modulation action side again
To, if primary frequency modulation instruction still with AGC instruction on the contrary, if set AGC load instructions as the 50% of normal AGC load rates,
When primary frequency modulation order fulfillment, primary frequency modulation theory contribution amount demand are less than 1.5MW or primary frequency modulation instruction and AGC instruction sides
To it is consistent when, AGC load load instruction speed switches to normal speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710442.9A CN107611995A (en) | 2017-08-18 | 2017-08-18 | Primary frequency modulation optimization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710442.9A CN107611995A (en) | 2017-08-18 | 2017-08-18 | Primary frequency modulation optimization method |
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| CN107611995A true CN107611995A (en) | 2018-01-19 |
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| CN201710710442.9A Pending CN107611995A (en) | 2017-08-18 | 2017-08-18 | Primary frequency modulation optimization method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556839A (en) * | 2019-08-12 | 2019-12-10 | 广东粤电云河发电有限公司 | primary frequency modulation control strategy of energy storage AGC (automatic gain control) auxiliary frequency modulation system of thermal power plant |
| CN110943464A (en) * | 2019-12-06 | 2020-03-31 | 中国大唐集团科学技术研究院有限公司 | Method for optimizing primary frequency modulation response time |
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| GB2449998B (en) * | 2007-06-07 | 2012-08-01 | Emerson Process Management | Steam temperature control in a boiler system using reheater variables |
| CN203224772U (en) * | 2013-04-30 | 2013-10-02 | 马鞍山当涂发电有限公司 | Primary frequency modulation control system for 660MW supercritical units |
| CN103475025A (en) * | 2013-09-16 | 2013-12-25 | 贵州电网公司电网规划研究中心 | Power generation unit speed controller state fast transfer control method |
| CN105785859A (en) * | 2016-03-03 | 2016-07-20 | 国网山东省电力公司电力科学研究院 | Optimization control system and method ensuring primary frequency modulation motion under AGC mode of thermal power generating unit |
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2017
- 2017-08-18 CN CN201710710442.9A patent/CN107611995A/en active Pending
Patent Citations (4)
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| GB2449998B (en) * | 2007-06-07 | 2012-08-01 | Emerson Process Management | Steam temperature control in a boiler system using reheater variables |
| CN203224772U (en) * | 2013-04-30 | 2013-10-02 | 马鞍山当涂发电有限公司 | Primary frequency modulation control system for 660MW supercritical units |
| CN103475025A (en) * | 2013-09-16 | 2013-12-25 | 贵州电网公司电网规划研究中心 | Power generation unit speed controller state fast transfer control method |
| CN105785859A (en) * | 2016-03-03 | 2016-07-20 | 国网山东省电力公司电力科学研究院 | Optimization control system and method ensuring primary frequency modulation motion under AGC mode of thermal power generating unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110556839A (en) * | 2019-08-12 | 2019-12-10 | 广东粤电云河发电有限公司 | primary frequency modulation control strategy of energy storage AGC (automatic gain control) auxiliary frequency modulation system of thermal power plant |
| CN110943464A (en) * | 2019-12-06 | 2020-03-31 | 中国大唐集团科学技术研究院有限公司 | Method for optimizing primary frequency modulation response time |
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Application publication date: 20180119 |