CN105186506A - Regional power grid real-time scheduling plan adjustment method - Google Patents
Regional power grid real-time scheduling plan adjustment method Download PDFInfo
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Abstract
The invention relates to a regional power grid real-time scheduling plan adjustment method. The method comprises the following steps: acquiring peripheral data; acquiring a planned output of a unit of each province from an uploaded data file of a provincial dispatching unit; in consideration of a super short period load of each province, acquiring a real-time generation scheduling deviation; acquiring an assessment index according to the plan execution condition of each province; calculating a deviation automatic distribution coefficient of each province according to the assessment index; respectively calculating a network dispatching deviation and a provincial dispatching deviation of each province, and equally distributing the network dispatching deviation to each unit. The regional power grid real-time scheduling plan adjustment method provided by the invention effectively achieves an application of provincial power grid information in the real-time scheduling plan work, and enhances the flexibility and controllability of the real-time scheduling plan.
Description
Technical Field
The invention relates to the field of power system dispatching plans, in particular to a method for adjusting a real-time dispatching plan of a regional power grid.
Background
At present, a real-time power generation plan based on an intelligent power grid dispatching technical support system is put into actual production operation, but the network dispatching is insufficient in mastering real-time plan information such as a provincial dispatching water and electricity plan, a thermal power plan and unit performance, and the real-time dispatching information is insufficient in sharing; due to insufficient information sharing, the real-time plan is single relative to the day-ahead and day-in plan modes and the compiling algorithm; the data feedback and the man-machine interaction of the real-time plan are insufficient, and the reference information provided for users is less.
Due to the particularity of the scheduling relation between the regional power grid and the provincial city under jurisdiction, namely that the network dispatching and the provincial dispatching participate in balance in the same balance region, the currently used real-time power generation plan does not obtain scheduling plan information of provincial dispatching related to water and thermal power in-day plans of a unit, unit regulation performance and the like, so that the information acquisition is asymmetric, the real-time planning mode and algorithm are difficult to be fair, fair and public, and the safe and reliable scheduling of the power grid is directly influenced under the special extreme condition. Therefore, how to consider the network and province two-stage optimization coordination scheduling problem in real-time planning is an urgent need to provide a reasonable solution.
Disclosure of Invention
In order to make up for the defects, the invention provides a method for adjusting the real-time scheduling plan of a regional power grid, which receives relevant scheduling information of provincial dispatching units in real time in a data file transmission mode, calculates assessment indexes such as input capacity ratio and regulation qualification rate according to the execution information of each provincial plan, influences a real-time plan deviation distribution algorithm, and realizes the coordination optimization of two stages of the power grid and the provincial.
The purpose of the invention is realized by adopting the following technical scheme:
a method for adjusting a real-time dispatching plan of a regional power grid is characterized by comprising the following steps:
(1) acquiring peripheral data; the method comprises the following steps: actual output of the network dispatching unit, the direct dispatching unit and the provincial dispatching unit at the current moment, planned output of the unit in a day power generation plan, unit parameters and ultra-short-term load prediction data of each province; the provincial dispatching unit data is uploaded by a provincial dispatching center in a file format at regular time;
(2) acquiring the planned output of each provincial unit from the uploaded provincial dispatching unit data file;
(3) acquiring real-time power generation plan deviation values by combining ultra-short-term loads of various provinces;
(4) obtaining assessment indexes according to the plan execution condition of each province;
(5) calculating automatic distribution coefficients of all provincial deviations according to the assessment indexes;
(6) and respectively calculating the provincial network regulation deviation amount and the provincial regulation deviation amount, and averagely distributing the network regulation deviation amount to each unit.
Preferably, the step (3) of obtaining the real-time power generation plan deviation amount includes:
v in formula (1)dis,i,tFor the deviation distribution of units in provincial i in time t, fi,tFor the ultra-short-term load prediction value, p, of the units in the i-province region in the time period ti,n,tAnd (4) a force value is planned for the nth unit in the province i area within the day of the time period t, wherein N is the number of the province i units.
Preferably, the step (4) of obtaining the assessment index includes: the input capacity ratio and the regulation qualification rate; wherein,
the calculation expression of the input capacity ratio is as follows:
in the formula (2), etai,tFor units in provincial i at time t the input capacity ratio, pi,n,tThe planned rated capacity of the power plants in the provincial i in the period t is calculated, N is the number of the power plants in the provincial i, and pi,m,tThe planned rated capacity of all power plants in the province i in the time period t is shown, and M is the number of the power-saving plants i;
the calculation expression of the regulation qualified rate is as follows:
in the formula (3), muiAdjusting qualification rate, M, for units in provincial iiFor i provinces of the number of unit adjustments, Deltai,mFor the m-th adjustment of the units in provincial region, Δi,m1 is qualified, Δi,m＝0Is not qualified.
Further, the Δi,mThe expression of (a) is:
When any condition of the formula (4) is satisfied, the adjusting result is qualified, otherwise, the adjusting result is unqualified;
in the formula (4), pij,realFor real-time planned output value, p, of commissioning unit j in province iij,intraTo design a force value, p, for the day of the commissioning unit j in province iij,actualThe actual output value of the commissioning unit j in the province i is obtained; and N is the number of the real-time planned commissioning machine sets.
Preferably, in the step (5), an automatic distribution coefficient of each provincial deviation is calculated, and an expression thereof is:
in the formula (5), xi,tAutomatic distribution of coefficients, beta, for network dispatching units deviation in the i-provincei,tA unit deviation influence factor of province i; gi, n, t, throwPlanned rated capacity, g, for a unit put into operation in province i during time period ti, n, t, netFor province i, the rated capacity g of the network dispatching unit in the time period ti, n, t, provinceAnd the rated capacity of the dispatching unit in the province i in the time period t is saved.
Further, in the step (6), the provincial network dispatches are respectively calculated
The deviation amount and the default deviation amount include:
▽net, i, t＝si,t.xi,t.▽dis,i,t+▽hand,i,t(6)
▽Province, i, t＝si,t.(1-xi,t).▽dis,i,t-▽hand,i,t(7)
V in formula (6) and formula (7)Net, i, tA net adjustment deviation amount of a unit of province i in a time period t +Province, i, tThe provincial adjustment deviation amount of the set of province i in the time period t; si,tThe operation state is planned in real time, the operation is 1, and the non-operation state is 0; vhand,i,tAnd manually offsetting the deviation set by the dispatcher.
Compared with the prior art, the invention has the following beneficial effects:
1. the method realizes information interaction between the network dispatching and the provincial dispatching in a file transmission mode, acquires plan execution information and unit operation parameters of each province in real time, and calculates corresponding assessment indexes and automatic deviation distribution coefficients according to real-time unit operation data reported by each province, so that real-time plan deviation amount is more reasonably distributed between the network dispatching and the provincial dispatching units; meanwhile, functions of manually setting distribution proportion, deviation offset and the like are added, and a network province interaction method is adopted in real-time scheduling, so that instant mutual transmission of network province information is realized.
2. The automatic distribution coefficients of each province consider the assessment indexes of each province, the input capacity ratio, the regulation qualification rate and other indexes of each power plant of each province are included in the distribution coefficient calculation formula, and the planned execution condition of each power plant of each province can be effectively improved.
3. And manual offset is added on the basis of automatic calculation, and the setting function of the coefficient is manually distributed, so that the system is more flexible and easy to control.
Drawings
Fig. 1 is a flowchart of a method for adjusting a real-time scheduling plan of a regional power grid according to the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the real-time planning information of the provincial power and hydropower planning, the thermal power planning, the unit performance and the like is not sufficiently mastered and the real-time scheduling information is not shared enough in the adjustment link of the real-time plan of the regional power grid, and the design of the real-time planning mode and the algorithm is difficult to be fair, fair and public, and the safe and reliable scheduling of the power grid is directly influenced under the special extreme condition.
A method for adjusting a real-time dispatching plan of a regional power grid is provided, and the method comprises the following steps:
(1) acquiring peripheral data; the method comprises the following steps: actual output of the network dispatching unit, the direct dispatching unit and the provincial dispatching unit at the current moment, planned output of the unit in a day power generation plan, unit parameters and ultra-short-term load prediction data of each province; the provincial dispatching unit data is uploaded by a provincial dispatching center in a file format at regular time;
(2) acquiring the planned output of each provincial unit from the uploaded provincial dispatching unit data file;
(3) acquiring real-time power generation plan deviation values by combining ultra-short-term loads of various provinces;
in the step (3), the step of obtaining the real-time power generation plan deviation amount comprises the following steps:
v in formula (1)dis,i,tFor the deviation distribution of units in provincial i in time t, fi,tFor the ultra-short-term load prediction value, p, of the units in the i-province region in the time period ti,n,tAnd (4) a force value is planned for the nth unit in the province i area within the day of the time period t, wherein N is the number of the province i units.
(4) Obtaining assessment indexes according to the plan execution condition of each province; the step (4) of obtaining the assessment indexes comprises the following steps: the input capacity ratio and the regulation qualification rate; wherein,
the calculation expression of the input capacity ratio is as follows:
in the formula (2), etai,tFor units in provincial i at time t the input capacity ratio, pi,n,tThe planned rated capacity of the power plants in the provincial i in the period t is calculated, N is the number of the power plants in the provincial i, and pi,m,tThe planned rated capacity of all power plants in the province i in the time period t is shown, and M is the number of the power-saving plants i;
the calculation expression of the regulation qualified rate is as follows:
in the formula (3), muiAdjusting qualification rate, M, for units in provincial iiFor i provinces of the number of unit adjustments, Deltai,mFor the m-th adjustment of the units in provincial region, Δi,m1 is qualified, Δi,mFail when 0.
Said Δi,mThe expression of (a) is:
When any condition of the formula (4) is satisfied, the adjusting result is qualified, otherwise, the adjusting result is unqualified;
in the formula (4), pij,realFor real-time planned output value, p, of commissioning unit j in province iij,intraTo design a force value, p, for the day of the commissioning unit j in province iij,actualThe actual output value of the commissioning unit j in the province i is obtained; and N is the number of the real-time planned commissioning machine sets.
(5) Calculating automatic distribution coefficients of all provincial deviations according to the assessment indexes;
in the step (5), calculating the automatic distribution coefficient of each province deviation, wherein the expression is as follows:
in the formula (5), xi,tAutomatic distribution of coefficients, beta, for network dispatching units deviation in the i-provincei,tA unit deviation influence factor of province i; the influence factor is related to each provincial assessment index and can be manually set by a dispatcher; gi, n, t, throwPlanned rated capacity, g, for a unit put into operation in province i during time period ti, n, t, netFor province i, the rated capacity g of the network dispatching unit in the time period ti, n, t, provinceAnd the rated capacity of the dispatching unit in the province i in the time period t is saved.
(6) Respectively calculating the provincial grid regulation deviation amount and the provincial regulation deviation amount, and in addition, other parameters of the real-time power generation plan further comprise: and the region operation state, manual offset and distribution coefficient of each province. And averagely distributing the calculated network adjustment deviation value to each unit.
In the step (6), the step of calculating the provincial network adjustment deviation amount and the provincial adjustment deviation amount respectively comprises:
▽net, i, t＝si,t.xi,t.▽dis,i,t+▽hand,i,t(6)
▽Province, i, t＝si,t.(1-xi,t).▽dis,i,t-▽hand,i,t(7)
V in formula (6) and formula (7)Net, i, tA net adjustment deviation amount of a unit of province i in a time period t +Province, i, tThe provincial adjustment deviation amount of the set of province i in the time period t; si,tThe operation state is planned in real time, the operation is 1, and the non-operation state is 0; vhand,i,tAnd manually offsetting the deviation set by the dispatcher.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (6)
1. A method for adjusting a real-time dispatching plan of a regional power grid is characterized by comprising the following steps:
(1) acquiring peripheral data; the method comprises the following steps: actual output of the network dispatching unit, the direct dispatching unit and the provincial dispatching unit at the current moment, planned output of the unit in a day power generation plan, unit parameters and ultra-short-term load prediction data of each province; the provincial dispatching unit data is uploaded by a provincial dispatching center in a file format at regular time;
(2) acquiring the planned output of each provincial unit from the uploaded provincial dispatching unit data file;
(3) acquiring real-time power generation plan deviation values by combining ultra-short-term loads of various provinces;
(4) obtaining assessment indexes according to the plan execution condition of each province;
(5) calculating automatic distribution coefficients of all provincial deviations according to the assessment indexes;
(6) and respectively calculating the provincial network regulation deviation amount and the provincial regulation deviation amount, and averagely distributing the network regulation deviation amount to each unit.
2. The adjustment method of claim 1, wherein said step (3) of obtaining a real-time power generation schedule deviation amount comprises:
v in formula (1)dis,i,tFor the deviation distribution of units in provincial i in time t, fi,tFor the ultra-short-term load prediction value, p, of the units in the i-province region in the time period ti,n,tAnd (4) a force value is planned for the nth unit in the province i area within the day of the time period t, wherein N is the number of the province i units.
3. The adjustment method of claim 1, wherein the step (4) of obtaining the assessment index comprises: the input capacity ratio and the regulation qualification rate; wherein,
the calculation expression of the input capacity ratio is as follows:
in the formula (2), etai,tFor units in provincial i at time t the input capacity ratio, pi,n,tThe planned rated capacity of the power plants in the provincial i in the period t is calculated, N is the number of the power plants in the provincial i, and pi,m,tThe planned rated capacity of all power plants in the province i in the time period t is shown, and M is the number of the power-saving plants i;
the calculation expression of the regulation qualified rate is as follows:
in the formula (3), muiAdjusting qualification rate, M, for units in provincial iiFor i provinces of the number of unit adjustments, Deltai,mFor the m-th adjustment of the units in provincial region, Δi,m1 is qualified, Δi,mFail when 0.
4. The adjustment method of claim 3, characterized in that said Δi,mThe expression of (a) is:
When any condition of the formula (4) is satisfied, the adjusting result is qualified, otherwise, the adjusting result is unqualified;
in the formula (4), pij,realFor real-time planned output value, p, of commissioning unit j in province iij,intraTo design a force value, p, for the day of the commissioning unit j in province iij,actualThe actual output value of the commissioning unit j in the province i is obtained; and N is the number of the real-time planned commissioning machine sets.
5. The adjustment method according to claim 1, wherein in the step (5), an automatic distribution coefficient of each provincial deviation is calculated by the expression:
in the formula (5), xi,tAutomatic distribution of coefficients, beta, for network dispatching units deviation in the i-provincei,tA unit deviation influence factor of province i; gi, n, t, throwPlanned rated capacity, g, for a unit put into operation in province i during time period ti, n, t, netFor province i, the rated capacity g of the network dispatching unit in the time period ti, n, t, provinceAnd the rated capacity of the dispatching unit in the province i in the time period t is saved.
6. The adjusting method according to claim 5, wherein the step (6) of calculating the provincial net adjustment deviation amount and the provincial deviation amount respectively comprises:
▽net, i, t＝si,t.xi,t.▽dis,i,t+▽hand,i,t(6)
▽Province, i, t＝si,t.(1-xi,t).▽dis,i,t-▽hand,i,t(7)
V in formula (6) and formula (7)Net, i, tA net adjustment deviation amount of a unit of province i in a time period t +Province, i, tThe provincial adjustment deviation amount of the set of province i in the time period t; si,tThe operation state is planned in real time, the operation is 1, and the non-operation state is 0; vhand,i,tDeviation set for dispatcherThe amount of manual bias.
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| CN111275360A (en) * | 2020-03-04 | 2020-06-12 | 江苏大唐国际吕四港发电有限责任公司 | Power generation load examination system |
| CN111724253A (en) * | 2020-05-21 | 2020-09-29 | 中国南方电网有限责任公司 | Hydropower transaction execution deviation scheduling method, system, device and storage medium |
| CN112381387A (en) * | 2020-11-12 | 2021-02-19 | 中国南方电网有限责任公司 | Scheduling plan deviation elimination distribution method for promoting renewable energy consumption |
| CN112434028A (en) * | 2020-10-30 | 2021-03-02 | 中国南方电网有限责任公司 | Panoramic monitoring system and method considering whole-network standby information of power plant management unit |
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