CN112861295A - Emergency control method and system based on safety early warning of electrical coupling system - Google Patents

Emergency control method and system based on safety early warning of electrical coupling system Download PDF

Info

Publication number
CN112861295A
CN112861295A CN202110184872.8A CN202110184872A CN112861295A CN 112861295 A CN112861295 A CN 112861295A CN 202110184872 A CN202110184872 A CN 202110184872A CN 112861295 A CN112861295 A CN 112861295A
Authority
CN
China
Prior art keywords
natural gas
emergency control
gas
fault
early warning
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.)
Pending
Application number
CN202110184872.8A
Other languages
Chinese (zh)
Inventor
孙宏斌
王卫
郭庆来
宫成
王彬
潘昭光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsinghua University
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
Original Assignee
Tsinghua University
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tsinghua University, State Grid Corp of China SGCC, State Grid Beijing Electric Power Co Ltd filed Critical Tsinghua University
Priority to CN202110184872.8A priority Critical patent/CN112861295A/en
Publication of CN112861295A publication Critical patent/CN112861295A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/18—Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • G06Q50/26—Government or public services
    • G06Q50/265—Personal security, identity or safety
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00—Details relating to CAD techniques
    • G06F2111/04—Constraint-based CAD
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2113/00—Details relating to the application field
    • G06F2113/14—Pipes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/06—Power analysis or power optimisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Geometry (AREA)
  • Tourism & Hospitality (AREA)
  • Economics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Business, Economics & Management (AREA)
  • Strategic Management (AREA)
  • General Engineering & Computer Science (AREA)
  • Primary Health Care (AREA)
  • Evolutionary Computation (AREA)
  • Computer Hardware Design (AREA)
  • Marketing (AREA)
  • Human Resources & Organizations (AREA)
  • Mathematical Optimization (AREA)
  • Water Supply & Treatment (AREA)
  • Public Health (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Development Economics (AREA)
  • Educational Administration (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The invention provides an emergency control method based on safety early warning of an electrical coupling system, which comprises the following steps: establishing a target function of an emergency control model based on the safety early warning of an electrical coupling system; establishing a constraint condition of an emergency control model based on the safety early warning of an electrical coupling system; the method comprises the steps that an emergency control model based on the electric coupling system safety early warning is formed together according to a target function of the emergency control model based on the electric coupling system safety early warning and constraint conditions of the emergency control model based on the electric coupling system safety early warning; solving an emergency control model based on the electric coupling system safety early warning; the invention can effectively utilize the early warning signal of the natural gas system to improve the safety level of the electric power system and effectively avoid excessive data exchange with the natural gas system in the safety control process of the electric power system; in addition, the invention also discloses an emergency control system based on the safety early warning of the electric coupling system.

Description

Emergency control method and system based on safety early warning of electrical coupling system
Technical Field
The invention belongs to the technical field of operation control of comprehensive energy systems, and particularly relates to an emergency control method and system based on safety early warning of an electrical coupling system.
Background
The operation safety of the power system directly influences the stability of the society, and large-area power failure can cause breakdown of various basic places such as hospitals, schools, subways and the like. With the enhancement of the coupling and interaction between the power system and the natural gas system, it is difficult to ensure the safe and reliable operation of the system by simply relying on the energy management system of the conventional power system.
While the natural gas system brings gas supply risk to the power system, the slow dynamic characteristic of the natural gas system also brings new opportunity to the safety control of the power system. Compared with an electric power system, the natural gas system has stronger toughness and anti-interference capability, and the improvement of the operation safety of the electric power system by using the management and storage of the natural gas system has important significance and practical value. How to effectively utilize the early warning signal of the natural gas system to carry out emergency control on the electrical coupling system so as to reduce the generation of safety accidents is a technical problem in the operation process of the electrical coupling system.
Disclosure of Invention
Aiming at the problems, the invention provides an emergency control method and system based on safety early warning of an electrical coupling system, aiming at fully utilizing the toughness and the anti-interference capability of a natural gas system and improving the operation safety level of the electrical coupling system.
An emergency control method based on safety early warning of an electrical coupling system comprises the following steps:
s1: establishing a target function of an emergency control model based on the safety early warning of an electrical coupling system;
s2: establishing a constraint condition of an emergency control model based on the safety early warning of an electrical coupling system;
s3: forming an emergency control model based on the electric coupling system safety early warning according to the objective function of the emergency control model based on the electric coupling system safety early warning and the constraint condition of the emergency control model based on the electric coupling system safety early warning;
s4: and solving the emergency control model based on the electric coupling system safety early warning.
Further, an objective function of an emergency control model based on the electric coupling system safety early warning is established, which specifically includes the following steps:
Figure BDA0002942693390000021
where T is the number of the emergency control time, T is the set of all the emergency control times, T ═ 1,2 … T, T is the maximum value of the emergency control time, k is the number of the electrical load in the electrical coupling system, S is the maximum value of the emergency control time, and S is the number of the electrical load in the electrical coupling systemLFor the aggregate of all electrical loads in an electrically coupled system,
Figure BDA0002942693390000022
the active power removed for the electrical load k at time t.
Further, the establishment of the constraint condition of the emergency control model based on the safety early warning of the electrical coupling system specifically includes:
establishing a constraint condition of the power flow;
establishing the operation constraint of active power for cutting off the electric load;
establishing operation constraint of a gas unit;
establishing a constraint condition of the line tide;
establishing a constraint condition of the available gas storage amount of a natural gas system;
and establishing a constraint condition of the maximum value at the emergency control moment.
Further, a constraint condition of the power flow is established, specifically as follows:
Figure BDA0002942693390000023
Pij,t＝(θi,t-θj,t)/xij,ij∈SB,i，i∈SNe,j∈SNe
wherein i and j are power node numbers, SNeFor the set of all power nodes, l is the number of the gas turbine unit affected by the natural gas system fault, SGf,iIs a set formed by all gas turbine units connected with an electric power node i and affected by the fault of a natural gas system, Pl,tThe active power generated by a gas unit l influenced by the natural gas system fault at the moment t, the active power generated by a gas unit not influenced by the natural gas system fault, and SGnf,iIs a set formed by all gas turbine units which are connected with an electric power node i and are not influenced by the fault of a natural gas system, Pm,tActive power S generated by the gas turbine unit m and not influenced by natural gas system faults at the moment tL,iA set of all electrical loads connected to the power node i, Pk,tFor the real power consumed by the electrical load k at time t,ij is a branch with power node i and power node j as endpoints, SB,iFor a set formed jointly by all branches connected to power node i, Pij,tIs the active power in branch ij at time t, thetai,tAnd thetaj,tThe voltage phase angles, x, of power node i and power node j at time tijIs the reactance of branch ij.
Further, establishing an operation constraint of active power for electric load shedding, specifically as follows:
Figure BDA0002942693390000031
Figure BDA0002942693390000032
in the formula, Pk,t+1For the real power consumed by the electrical load k at time t +1,
Figure BDA0002942693390000033
active power, P, removed for the electrical load k at time tk,tThe real power consumed by the electrical load k for time t.
Further, establishing the operation constraint of the gas turbine set specifically as follows:
Figure BDA0002942693390000034
Figure BDA0002942693390000035
Figure BDA0002942693390000036
Pl,T＝0
-Rdl≤Pl,t+1-Pl,t≤0
0≤Pm,t+1-Pm,t≤Rum
in the formula, Ml,tThe mass flow rho of the natural gas consumed by the gas unit l affected by the natural gas system fault at the moment tGIs the density of the natural gas, LHV is the lower calorific value, eta, of the natural gaslIn order to improve the power generation efficiency of the gas turbine unit l,P land
Figure BDA0002942693390000037
respectively the lower limit and the upper limit of the active power generated by the gas unit l affected by the natural gas system fault,P mand
Figure BDA0002942693390000038
the lower limit and the upper limit of the active power value generated by the gas turbine unit m which is not affected by the natural gas system fault are respectively, T is a set formed by all emergency control moments, T is {1,2 … T }, T is the maximum value of the emergency control moments, P is the maximum value of the emergency control momentsl,TActive power, Rd, generated by gas turbine unit l affected by natural gas system failure at time TlFor the downward ramp rate, P, of a gas unit l affected by a natural gas system faultl,t+1Active power, P, generated by the gas turbine unit l affected by the natural gas system fault at time t +1m,t+1Ru active power generated by the gas turbine unit m at the moment of t +1 and not influenced by natural gas system faultsmUpward ramp rate, P, of gas turbine unit m unaffected by natural gas system failurem,tActive power, P, generated by the gas turbine unit m at time t without being affected by natural gas system faultsl,tThe active power generated by the gas turbine unit l influenced by the natural gas system fault at the moment t.
Further, a constraint condition of the line power flow is established, which specifically includes:
Figure BDA0002942693390000041
in the formula (I), the compound is shown in the specification,P ijand
Figure BDA0002942693390000042
lower and upper limits, P, respectively, of the active power in branch ijij,tThe active power in branch ij at time t.
Further, a constraint condition of the available gas storage capacity of the natural gas system is established, which comprises the following specific steps:
Figure BDA0002942693390000043
Figure BDA0002942693390000044
Figure BDA0002942693390000045
Figure BDA0002942693390000046
ALPn,t≥0，n∈SNg
in the formula, n is the number of the natural gas node affected by the natural gas system fault, SNgA set formed by all natural gas nodes affected by the natural gas system fault, rhoGIs the density of natural gas, ALPn,0ALP for the available reserve at natural gas node n in the event of a faultn,1Is the available gas storage capacity at the natural gas node n at time 1, Deq,nEquivalent diameter of natural gas pipeline for supplying gas to natural gas node n, Leq,nFor the distance of a fault from a point of failure in a natural gas system to a natural gas node n, Deq,nAnd Leq,nProvided by a natural gas energy management system, SGf,nIs the set of all gas units affected by the natural gas system fault at the natural gas node n, Ml,0The mass flow of natural gas consumed by a gas unit l when a fault occurs, h is the number of natural gas load of a non-gas unit, l is the number of the gas unit affected by the fault of a natural gas system, and SGl,nFor all at natural gas node nSet of natural gas loads of non-gas-fired units, Mh,0SADT for the mass flow of natural gas consumed by the natural gas load n of a non-gas-fired unit when a fault occursnFor fault pre-warning time at natural gas node n, SADTnProvided by the natural gas energy management system, Δ t is the time interval between adjacent emergency control moments, ALPn,tAnd ALPn,t-1Available gas storage at natural gas node n, M, at time t and time t-1, respectivelyl,t-1The mass flow of the natural gas consumed by the gas turbine unit l at the time t-1.
Further, a constraint condition of a maximum value at the time of emergency control is established, specifically as follows:
DADTn,0＝SADTn
Figure BDA0002942693390000051
T·△t≤max(DADTn)
in the formula, DADTn,0DADT for dynamic warning time at Natural gas node n when a failure occursnFor dynamic early warning time at natural gas node n at time T, SADTnFor fault pre-warning time at natural gas node n, SADTnProvided by a natural gas energy management system, T is a set of all emergency control moments, T is {1,2 … T }, T is the maximum value of the emergency control moments, ALPn,TThe available gas storage quantity at a natural gas node n at the moment T, the number of a gas turbine unit affected by the natural gas system fault, and SGf,nIs the set of all gas units affected by the natural gas system fault at the natural gas node n, SGl,nIs the set of all non-gas turbine set natural gas loads at natural gas node n, Mh,0The natural gas load n of the non-gas turbine set consumes the mass flow of the natural gas when a fault occurs, n is the serial number of a natural gas node influenced by the fault of a natural gas system, Ml,TThe mass flow of the natural gas consumed by the gas turbine set l affected by the natural gas system fault at the moment T, delta T is the time interval between adjacent emergency control moments, and h is the number of the natural gas load of the non-gas turbine set.
Further, the decision variables of the emergency control model based on the safety precaution of the electrical coupling system include: active power of electric load k cut-off
Figure BDA0002942693390000061
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,t。
Further, solving the emergency control model based on the electric coupling system safety precaution specifically includes:
s4-1: acquiring initial energy flow data when a fault occurs from a gas-electric coupling energy management system;
s4-2: the iteration number is recorded as iter, the initial value of iter is given as 1, and the maximum value of iter is given as itermaxGiving an iterative computation convergence criterion tol and a positive coefficient tau smaller than 1;
s4-3: order to
Figure BDA0002942693390000062
Solving the emergency control model based on the electric coupling system safety early warning;
where T is a set of all the emergency control times, {1,2 … T }, T is the maximum value of the emergency control times, SADTnThe time is the failure early warning time at the natural gas node n, and the delta t is the time interval between adjacent emergency control moments;
s4-4: ALP obtained if said step S4-3n,TTol or obtained in said step S4-3
Figure BDA0002942693390000063
The iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure BDA0002942693390000064
Active power P generated by gas turbine unit l affected by natural gas system faultl,tGas turbine unit m product free from influence of natural gas system faultReal active power Pm,tThe optimal solution of the emergency control model based on the electric coupling system safety early warning is obtained; otherwise, go to step S4-5;
in the formula, ALPn,TIs the available gas storage quantity S at the natural gas node n at the moment TLThe method comprises the following steps of (1) setting a set of all electric loads in an electric coupling system, wherein k is the number of the electric loads in the electric coupling system;
s4-5: order to
Figure BDA0002942693390000071
If DADTn≤SADTnIf so, the iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure BDA0002942693390000072
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,tThe optimal solution of the emergency control model based on the electric coupling system safety early warning is obtained; otherwise, go to step S4-6;
in the formula, DADTnThe dynamic early warning time at the natural gas node n at the time T, l is the number of the gas turbine unit affected by the natural gas system fault, T is the set formed by all the emergency control times, T is {1,2 … T }, T is the maximum value of the emergency control times, S is the maximum value of the emergency control times, andGf,nis the set of all gas units affected by the natural gas system fault at the natural gas node n, Ml,TThe mass flow of the natural gas consumed by the gas unit l affected by the natural gas system fault at the moment T, h is the number of the natural gas load of the non-gas unit, SGl,nIs the set of all non-gas turbine set natural gas loads at natural gas node n, Mh,0The mass flow of natural gas consumed by a natural gas load n of a non-gas turbine set when a fault occurs is represented by delta t, and the delta t is a time interval between adjacent emergency control moments;
s4-6: let iter be iter +1, let SADTn＝DADTnIf iter is greater than or equal to itermaxIf so, the iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure BDA0002942693390000073
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,tThe optimal solution of the emergency control model based on the electric coupling system safety early warning is obtained; otherwise, the step S4-3 is performed.
Further, the initial fluence data comprises: active power P generated by gas turbine unit l affected by natural gas system fault when fault occursl,0Active power P generated by gas turbine unit m and not affected by natural gas system fault when fault occursm,tActive power P consumed by the electrical load k when a fault occursk,tObtaining fault early warning time SADT from natural gas energy management systemnAnd the fault distance L from the fault point to the natural gas node neq,n。
An emergency control system based on electrical coupling system safety precaution, comprising:
a first establishing module: the target function is used for establishing an emergency control model based on the electric coupling system safety early warning;
a second establishing module: the constraint conditions are used for establishing an emergency control model based on the electric coupling system safety early warning;
a third establishing module: the emergency control model is used for forming an electric coupling system based safety early warning; the third establishing module jointly forms the emergency control model based on the electric coupling system safety early warning according to a target function of the emergency control model based on the electric coupling system safety early warning and constraint conditions of the emergency control model based on the electric coupling system safety early warning;
a solving module: and the emergency control model is used for solving the safety early warning based on the electrical coupling system.
The invention has the beneficial effects that: the safety level of the power system can be improved by effectively utilizing the early warning signal of the natural gas system, and excessive data exchange with the natural gas system in the safety control process of the power system is effectively avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of an emergency control method based on safety pre-warning of an electrical coupling system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an emergency control system based on safety pre-warning of an electrical coupling system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of an emergency control method based on safety pre-warning of an electrical coupling system according to an embodiment of the present invention, and the emergency control method based on safety pre-warning of the electrical coupling system includes the following steps:
(1) establishing an objective function of an emergency control model based on electric coupling system safety early warning:
Figure BDA0002942693390000091
where T is the number of the emergency control time, T is the set of all the emergency control times, T ═ 1,2 … T, T is the maximum value of the emergency control time, k is the number of the electrical load in the electrical coupling system, S is the maximum value of the emergency control time, and S is the number of the electrical load in the electrical coupling systemLFor the aggregate of all electrical loads in an electrically coupled system,
Figure BDA0002942693390000092
active power removed for the electrical load k at time t;
(2) establishing a constraint condition of an emergency control model based on electric coupling system safety early warning:
(2-1) establishing a constraint condition of the power flow:
Figure BDA0002942693390000093
Pij,t＝(θi,t-θj,t)/xij,ij∈SB,i，i∈SNe,j∈SNe
wherein i and j are power node numbers, SNeFor the set of all power nodes, l is the number of the gas turbine unit affected by the natural gas system fault, SGf,iIs a set formed by all gas turbine units connected with an electric power node i and affected by the fault of a natural gas system, Pl,tThe active power generated by a gas unit l influenced by the natural gas system fault at the moment t, the active power generated by a gas unit not influenced by the natural gas system fault, and SGnf,iIs a set formed by all gas turbine units which are connected with an electric power node i and are not influenced by the fault of a natural gas system, Pm,tActive power S generated by the gas turbine unit m and not influenced by natural gas system faults at the moment tL,iA set of all electrical loads connected to the power node i, Pk,tActive power consumed by an electric load k at time t, ij is a branch with an electric power node i and an electric power node j as end points, SB,iFor a set formed jointly by all branches connected to power node i, Pij,tIs the active power in branch ij at time t, thetai,tAnd thetaj,tThe voltage phase angles, x, of power node i and power node j at time tijReactance for branch ij;
(2-2) establishing an operation constraint of active power of electric load removal:
Figure BDA0002942693390000101
Figure BDA0002942693390000102
in the formula, Pk,t+1The active power consumed by the electrical load k at the time t + 1;
(2-3) establishing the operation constraint of the gas unit:
Figure BDA0002942693390000103
Figure BDA0002942693390000104
Figure BDA0002942693390000105
Pl,T＝0
-Rdl≤Pl,t+1-Pl,t≤0
0≤Pm,t+1-Pm,t≤Rum
in the formula, Ml,tThe mass flow rho of the natural gas consumed by the gas unit l affected by the natural gas system fault at the moment tGIs the density of the natural gas, LHV is the lower calorific value, eta, of the natural gaslIn order to improve the power generation efficiency of the gas turbine unit l,P land
Figure BDA0002942693390000111
respectively the lower limit and the upper limit of the active power generated by the gas unit l affected by the natural gas system fault,P mand
Figure BDA0002942693390000112
respectively the lower limit and the upper limit, P, of the value of the active power generated by the gas turbine unit m which is not affected by the natural gas system faultl,TActive power, Rd, generated by gas turbine unit l affected by natural gas system failure at time TlFor the downward ramp rate, P, of a gas unit l affected by a natural gas system faultl,t+1Active power, P, generated by the gas turbine unit l affected by the natural gas system fault at time t +1m,t+1Ru active power generated by the gas turbine unit m at the moment of t +1 and not influenced by natural gas system faultsmThe upward climbing speed of the gas turbine set m is not influenced by the natural gas system fault;
(2-4) establishing constraint conditions of the line power flow:
Figure BDA0002942693390000113
in the formula (I), the compound is shown in the specification,P ijand
Figure BDA0002942693390000114
the lower limit and the upper limit of the active power in the branch ij are respectively;
(2-5) establishing a constraint condition of the available gas storage capacity of the natural gas system:
Figure BDA0002942693390000115
Figure BDA0002942693390000116
Figure BDA0002942693390000117
Figure BDA0002942693390000118
ALPn,t≥0，n∈SNg
in the formula, n is the number of the natural gas node affected by the natural gas system fault, SNgALP, a collective of all natural gas nodes affected by natural gas system failuresn,0ALP for the available reserve at natural gas node n in the event of a faultn,1Is the available gas storage capacity at the natural gas node n at time 1, Deq,nEquivalent diameter of natural gas pipeline for supplying gas to natural gas node n, Leq,nFor the distance of a fault from a point of failure in a natural gas system to a natural gas node n, Deq,nAnd Leq,nProvided by a natural gas energy management system, SGf,nIs the set of all gas units affected by the natural gas system fault at the natural gas node n, Ml,0The mass flow of natural gas consumed by the gas turbine set when a fault occurs, h is the number of natural gas load of a non-gas turbine set, SGl,nIs the set of all non-gas turbine set natural gas loads at natural gas node n, Mh,0SADT for the mass flow of natural gas consumed by the natural gas load n of a non-gas-fired unit when a fault occursnFor fault pre-warning time at natural gas node n, SADTnProvided by the natural gas energy management system, Δ t is the time interval between adjacent emergency control moments, ALPn,tAnd ALPn,t-1Available gas storage at natural gas node n, M, at time t and time t-1, respectivelyl,t-1The mass flow of the natural gas consumed by the gas unit l at the time of t-1;
(2-6) establishing a constraint condition of the maximum value of the emergency control moment:
DADTn,0＝SADTn
Figure BDA0002942693390000121
T·△t≤max(DADTn)
in the formula, DADTn,0DADT for dynamic warning time at Natural gas node n when a failure occursnFor dynamic early warning time at natural gas node n at time T, SADTnFor fault pre-warning time at natural gas node n, SADTnProvided by a natural gas energy management system, T is a set of all emergency control moments, T is {1,2 … T }, T is the maximum value of the emergency control moments, ALPn,TThe available gas storage quantity at a natural gas node n at the moment T, the number of a gas turbine unit affected by the natural gas system fault, and SGf,nIs the set of all gas units affected by the natural gas system fault at the natural gas node n, SGl,nIs the set of all non-gas turbine set natural gas loads at natural gas node n, Mh,0The natural gas load n of the non-gas turbine set consumes the mass flow of the natural gas when a fault occurs, n is the serial number of a natural gas node influenced by the fault of a natural gas system, Ml,TThe mass flow of the natural gas consumed by the gas turbine set l affected by the natural gas system fault at the moment T, delta T is the time interval between adjacent emergency control moments, and h is the number of the natural gas load of the non-gas turbine set.
(3) The method comprises the following steps that an emergency control model based on the electric coupling system safety early warning is jointly formed by a target function of the emergency control model based on the electric coupling system safety early warning established in the step (1) and constraint conditions of the emergency control model based on the electric coupling system safety early warning established in the step (2), and decision variables of the model comprise: active power of electric load k cut-off
Figure BDA0002942693390000131
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,t；
(4) Solving the emergency control model based on the electric coupling system safety early warning established in the step (3):
(4-1) acquiring fault information from gas-electric coupling energy management systemInitial fluence data at birth, comprising: active power P generated by gas turbine unit l affected by natural gas system fault when fault occursl,0Active power P generated by gas turbine unit m and not affected by natural gas system fault when fault occursm,tActive power P consumed by the electrical load k when a fault occursk,t(ii) a Obtaining fault early warning time SADT from natural gas energy management systemnAnd the fault distance L from the fault point to the natural gas node neq,n；
(4-2) recording the iteration number as iter, giving the initial value of iter as 1, and giving the maximum value of iter as itermaxGiving an iterative computation convergence criterion tol and a positive coefficient tau smaller than 1;
(4-3) order
Figure BDA0002942693390000132
Solving the emergency control model based on the electric coupling system safety early warning established in the step (3);
where T is a set of all the emergency control times, {1,2 … T }, T is the maximum value of the emergency control times, SADTnThe time is the failure early warning time at the natural gas node n, and the delta t is the time interval between adjacent emergency control moments;
(4-4) ALP obtained if step (4-3)n,TTol or obtained in step (4-3)
Figure BDA0002942693390000141
The iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure BDA0002942693390000142
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,tThe optimal solution of the emergency control model based on the electric coupling system safety early warning is obtained; otherwise, performing the step (4-5);
in the formula, ALPn,tIs the available gas storage quantity, S, at the natural gas node n at time tLFor electrically coupling systemsK is the number of the electric loads in the electric coupling system;
(4-5) order
Figure BDA0002942693390000143
If DADTn≤SADTnIf so, the iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure BDA0002942693390000144
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,tThe optimal solution of the emergency control model based on the electric coupling system safety early warning is obtained; otherwise, performing the step (4-6);
in the formula, DADTnThe dynamic early warning time at the natural gas node n at the time T, l is the number of the gas turbine unit affected by the natural gas system fault, T is the set formed by all the emergency control times, T is {1,2 … T }, T is the maximum value of the emergency control times, S is the maximum value of the emergency control times, andGf,nis the set of all gas units affected by the natural gas system fault at the natural gas node n, Ml,TThe mass flow of the natural gas consumed by the gas unit l affected by the natural gas system fault at the moment T, h is the number of the natural gas load of the non-gas unit, SGl,nIs the set of all non-gas turbine set natural gas loads at natural gas node n, Mh,0The mass flow of natural gas consumed by a natural gas load n of a non-gas turbine set when a fault occurs is represented by delta t, and the delta t is a time interval between adjacent emergency control moments;
(4-6) let iter +1, let SADTn＝DADTnIf iter is greater than or equal to itermaxIf so, the iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure BDA0002942693390000145
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,tIs thatAn optimal solution of an emergency control model based on electric coupling system safety early warning; otherwise, performing the step (4-3).
Referring to fig. 2, fig. 2 is a schematic structural diagram of an emergency control system based on safety pre-warning of an electrical coupling system according to an embodiment of the present invention, and the emergency control system based on safety pre-warning of the electrical coupling system includes:
a first establishing module: the target function is used for establishing an emergency control model based on the electric coupling system safety early warning;
a second establishing module: the constraint conditions are used for establishing an emergency control model based on the electric coupling system safety early warning;
a third establishing module: the emergency control model is used for forming an electric coupling system based safety early warning;
and the third establishing module jointly forms the emergency control model based on the safety early warning of the electric coupling system according to the objective function of the emergency control model based on the safety early warning of the electric coupling system and the constraint condition of the emergency control model based on the safety early warning of the electric coupling system.
A solving module: the emergency control model is used for solving the safety early warning based on the electric coupling system. The specific implementation of the system module can be obtained from the specific implementation of the emergency control method based on the electric coupling system safety early warning, and is not described in detail.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (13)

1. An emergency control method based on safety early warning of an electrical coupling system is characterized by comprising the following steps:
s1: establishing a target function of an emergency control model based on the safety early warning of an electrical coupling system;
s2: establishing a constraint condition of an emergency control model based on the safety early warning of an electrical coupling system;
s3: forming an emergency control model based on the electric coupling system safety early warning according to the objective function of the emergency control model based on the electric coupling system safety early warning and the constraint condition of the emergency control model based on the electric coupling system safety early warning;
s4: and solving the emergency control model based on the electric coupling system safety early warning.
2. The emergency control method based on the electric coupling system safety precaution as claimed in claim 1,
the method comprises the following steps of establishing an objective function of an emergency control model based on electric coupling system safety early warning, specifically:
Figure FDA0002942693380000011
where T is the number of the emergency control time, T is the set of all the emergency control times, T ═ 1,2 … T, T is the maximum value of the emergency control time, k is the number of the electrical load in the electrical coupling system, S is the maximum value of the emergency control time, and S is the number of the electrical load in the electrical coupling systemLFor the aggregate of all electrical loads in an electrically coupled system,
Figure FDA0002942693380000012
the active power removed for the electrical load k at time t.
3. The emergency control method based on the electric coupling system safety precaution as claimed in claim 1,
the method comprises the following steps of establishing a constraint condition of an emergency control model based on electric coupling system safety early warning, and specifically comprising the following steps:
establishing a constraint condition of the power flow;
establishing the operation constraint of active power for cutting off the electric load;
establishing operation constraint of a gas unit;
establishing a constraint condition of the line tide;
establishing a constraint condition of the available gas storage amount of a natural gas system;
and establishing a constraint condition of the maximum value at the emergency control moment.
4. The emergency control method based on the electric coupling system safety precaution as claimed in claim 3,
establishing a constraint condition of the power flow, which comprises the following specific steps:
Figure FDA0002942693380000021
Pij,t＝(θi,t-θj,t)/xij,ij∈SB,i，i∈SNe,j∈SNe
wherein i and j are power node numbers, SNeFor the set of all power nodes, l is the number of the gas turbine unit affected by the natural gas system fault, SGf,iIs a set formed by all gas turbine units connected with an electric power node i and affected by the fault of a natural gas system, Pl,tThe active power generated by a gas unit l influenced by the natural gas system fault at the moment t, the active power generated by a gas unit not influenced by the natural gas system fault, and SGnf,iIs a set formed by all gas turbine units which are connected with an electric power node i and are not influenced by the fault of a natural gas system, Pm,tActive power S generated by the gas turbine unit m and not influenced by natural gas system faults at the moment tL,iA set of all electrical loads connected to the power node i, Pk,tActive power consumed by an electric load k at time t, ij is a branch with an electric power node i and an electric power node j as end points, SB,iFor a set formed jointly by all branches connected to power node i, Pij,tIs the active power in branch ij at time t, thetai,tAnd thetaj,tThe voltage phase angles, x, of power node i and power node j at time tijIs a supportReactance of way ij.
5. The emergency control method based on the electric coupling system safety precaution as claimed in claim 3,
establishing the operation constraint of active power for cutting off the electric load, which comprises the following steps:
Figure FDA0002942693380000031
Figure FDA0002942693380000032
in the formula, Pk,t+1For the real power consumed by the electrical load k at time t +1,
Figure FDA0002942693380000033
active power, P, removed for the electrical load k at time tk,tThe real power consumed by the electrical load k for time t.
6. The emergency control method based on the electric coupling system safety precaution as claimed in claim 3,
establishing the operation constraint of the gas unit, which comprises the following steps:
Figure FDA0002942693380000034
Figure FDA0002942693380000035
Figure FDA0002942693380000036
Pl,T＝0
-Rdl≤Pl,t+1-Pl,t≤0
0≤Pm,t+1-Pm,t≤Rum
in the formula, Ml,tThe mass flow rho of the natural gas consumed by the gas unit l affected by the natural gas system fault at the moment tGIs the density of the natural gas, LHV is the lower calorific value, eta, of the natural gaslIn order to improve the power generation efficiency of the gas turbine unit l,P land
Figure FDA0002942693380000037
respectively the lower limit and the upper limit of the active power generated by the gas unit l affected by the natural gas system fault,P mand
Figure FDA0002942693380000038
the lower limit and the upper limit of the active power value generated by the gas turbine unit m which is not affected by the natural gas system fault are respectively, T is a set formed by all emergency control moments, T is {1,2 … T }, T is the maximum value of the emergency control moments, P is the maximum value of the emergency control momentsl,TActive power, Rd, generated by gas turbine unit l affected by natural gas system failure at time TlFor the downward ramp rate, P, of a gas unit l affected by a natural gas system faultl,t+1Active power, P, generated by the gas turbine unit l affected by the natural gas system fault at time t +1m,t+1Ru active power generated by the gas turbine unit m at the moment of t +1 and not influenced by natural gas system faultsmUpward ramp rate, P, of gas turbine unit m unaffected by natural gas system failurem,tActive power, P, generated by the gas turbine unit m at time t without being affected by natural gas system faultsl,tThe active power generated by the gas turbine unit l influenced by the natural gas system fault at the moment t.
7. The emergency control method based on the electric coupling system safety precaution as claimed in claim 3,
establishing a constraint condition of the line tide, which comprises the following specific steps:
Figure FDA0002942693380000041
in the formula (I), the compound is shown in the specification,P ijand
Figure FDA0002942693380000042
lower and upper limits, P, respectively, of the active power in branch ijij,tThe active power in branch ij at time t.
8. The emergency control method based on the electric coupling system safety precaution as claimed in claim 3,
the method comprises the following steps of establishing a constraint condition of the available gas storage quantity of a natural gas system, specifically:
Figure FDA0002942693380000043
Figure FDA0002942693380000044
Figure FDA0002942693380000045
Figure FDA0002942693380000046
ALPn,t≥0，n∈SNg
in the formula, n is the number of the natural gas node affected by the natural gas system fault, SNgA set formed by all natural gas nodes affected by the natural gas system fault, rhoGIs the density of natural gas, ALPn,0ALP for the available reserve at natural gas node n in the event of a faultn,1At the natural gas node n at time 1Available amount of stored gas of Deq,nEquivalent diameter of natural gas pipeline for supplying gas to natural gas node n, Leq,nFor the distance of a fault from a point of failure in a natural gas system to a natural gas node n, Deq,nAnd Leq,nProvided by a natural gas energy management system, SGf,nIs the set of all gas units affected by the natural gas system fault at the natural gas node n, Ml,0The mass flow of natural gas consumed by a gas unit l when a fault occurs, h is the number of natural gas load of a non-gas unit, l is the number of the gas unit affected by the fault of a natural gas system, and SGl,nIs the set of all non-gas turbine set natural gas loads at natural gas node n, Mh,0SADT for the mass flow of natural gas consumed by the natural gas load n of a non-gas-fired unit when a fault occursnFor fault pre-warning time at natural gas node n, SADTnProvided by the natural gas energy management system, Δ t is the time interval between adjacent emergency control moments, ALPn,tAnd ALPn,t-1Available gas storage at natural gas node n, M, at time t and time t-1, respectivelyl,t-1The mass flow of the natural gas consumed by the gas turbine unit l at the time t-1.
9. The emergency control method based on the electric coupling system safety precaution as claimed in claim 3,
establishing a constraint condition of the maximum value at the emergency control moment, which is concretely as follows:
DADTn,0＝SADTn
Figure FDA0002942693380000051
T·△t≤max(DADTn)
in the formula, DADTn,0DADT for dynamic warning time at Natural gas node n when a failure occursnFor dynamic early warning time at natural gas node n at time T, SADTnFor fault pre-warning time at natural gas node n, SADTnProvided by a natural gas energy management system, T isThere is a set of emergency control times, T ═ 1,2 … T, T being the maximum value of the emergency control times, ALPn,TThe available gas storage quantity at a natural gas node n at the moment T, the number of a gas turbine unit affected by the natural gas system fault, and SGf,nIs the set of all gas units affected by the natural gas system fault at the natural gas node n, SGl,nIs the set of all non-gas turbine set natural gas loads at natural gas node n, Mh,0The natural gas load n of the non-gas turbine set consumes the mass flow of the natural gas when a fault occurs, n is the serial number of a natural gas node influenced by the fault of a natural gas system, Ml,TThe mass flow of the natural gas consumed by the gas turbine set l affected by the natural gas system fault at the moment T, delta T is the time interval between adjacent emergency control moments, and h is the number of the natural gas load of the non-gas turbine set.
10. The emergency control method based on the electric coupling system safety precaution as claimed in claim 1, wherein the decision variables of the emergency control model based on the electric coupling system safety precaution include: active power of electric load k cut-off
Figure FDA0002942693380000061
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,t。
11. The emergency control method based on the electric coupling system safety precaution as claimed in claim 1,
solving the emergency control model based on the electric coupling system safety early warning specifically comprises:
s4-1: acquiring initial energy flow data when a fault occurs from a gas-electric coupling energy management system;
s4-2: the iteration number is recorded as iter, the initial value of iter is given as 1, and the maximum value of iter is given as itermaxGiving an iterative calculation convergence criterion tol and a positive system smaller than 1A number τ;
s4-3: order to
Figure FDA0002942693380000062
Solving the emergency control model based on the electric coupling system safety early warning;
where T is a set of all the emergency control times, {1,2 … T }, T is the maximum value of the emergency control times, SADTnThe time is the failure early warning time at the natural gas node n, and the delta t is the time interval between adjacent emergency control moments;
s4-4: ALP obtained if said step S4-3n,TTol or obtained in said step S4-3
Figure FDA0002942693380000071
The iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure FDA0002942693380000072
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,tThe optimal solution of the emergency control model based on the electric coupling system safety early warning is obtained; otherwise, go to step S4-5;
in the formula, ALPn,TIs the available gas storage quantity S at the natural gas node n at the moment TLThe method comprises the following steps of (1) setting a set of all electric loads in an electric coupling system, wherein k is the number of the electric loads in the electric coupling system;
s4-5: order to
Figure FDA0002942693380000073
If DADTn≤SADTnIf so, the iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure FDA0002942693380000074
Active power P generated by gas turbine unit l affected by natural gas system faultl,tFree from natural gasActive power P generated by gas unit m and influenced by system faultm,tThe optimal solution of the emergency control model based on the electric coupling system safety early warning is obtained; otherwise, go to step S4-6;
in the formula, DADTnThe dynamic early warning time at the natural gas node n at the time T, l is the number of the gas turbine unit affected by the natural gas system fault, T is the set formed by all the emergency control times, T is {1,2 … T }, T is the maximum value of the emergency control times, S is the maximum value of the emergency control times, andGf,nis the set of all gas units affected by the natural gas system fault at the natural gas node n, Ml,TThe mass flow of the natural gas consumed by the gas unit l affected by the natural gas system fault at the moment T, h is the number of the natural gas load of the non-gas unit, SGl,nIs the set of all non-gas turbine set natural gas loads at natural gas node n, Mh,0The mass flow of natural gas consumed by a natural gas load n of a non-gas turbine set when a fault occurs is represented by delta t, and the delta t is a time interval between adjacent emergency control moments;
s4-6: let iter be iter +1, let SADTn＝DADTnIf iter is greater than or equal to itermaxIf so, the iterative computation is ended, and the active power of the electric load k removal is obtained at this time
Figure FDA0002942693380000075
Active power P generated by gas turbine unit l affected by natural gas system faultl,tActive power P generated by gas turbine unit m and not affected by natural gas system faultm,tThe optimal solution of the emergency control model based on the electric coupling system safety early warning is obtained; otherwise, the step S4-3 is performed.
12. The electrical coupling system safety precaution-based emergency control method of claim 11, wherein the initial energy flow data includes: active power P generated by gas turbine unit l affected by natural gas system fault when fault occursl,0Active power P generated by gas turbine unit m and not affected by natural gas system fault when fault occursm,tActive power consumed by the electrical load k when a fault occursPk,tObtaining fault early warning time SADT from natural gas energy management systemnAnd the fault distance L from the fault point to the natural gas node neq,n。
13. An emergency control system based on electric coupling system safety precaution, characterized by comprising:
a first establishing module: the target function is used for establishing an emergency control model based on the electric coupling system safety early warning;
a second establishing module: the constraint conditions are used for establishing an emergency control model based on the electric coupling system safety early warning;
a third establishing module: the emergency control model is used for forming an electric coupling system based safety early warning; the third establishing module jointly forms the emergency control model based on the electric coupling system safety early warning according to the target function of the emergency control model based on the electric coupling system safety early warning and the constraint condition of the emergency control model based on the electric coupling system safety early warning;
a solving module: and the emergency control model is used for solving the safety early warning based on the electrical coupling system.
CN202110184872.8A 2021-02-10 2021-02-10 Emergency control method and system based on safety early warning of electrical coupling system Pending CN112861295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110184872.8A CN112861295A (en) 2021-02-10 2021-02-10 Emergency control method and system based on safety early warning of electrical coupling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110184872.8A CN112861295A (en) 2021-02-10 2021-02-10 Emergency control method and system based on safety early warning of electrical coupling system

Publications (1)

Publication Number Publication Date
CN112861295A true CN112861295A (en) 2021-05-28

Family

ID=75987977

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110184872.8A Pending CN112861295A (en) 2021-02-10 2021-02-10 Emergency control method and system based on safety early warning of electrical coupling system

Country Status (1)

Country Link
CN (1) CN112861295A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120238319A1 (en) * 2011-03-16 2012-09-20 Colin Patrick Lake System and method for combined alarm detection and emergency signaling
CN105958480A (en) * 2016-05-27 2016-09-21 清华大学 Combined static safety analysis method for electrical-gas coupling multiple energy flow system
CN109615248A (en) * 2018-12-14 2019-04-12 浙江大学 A kind of cascading failure in power system estimation method for considering natural gas system and influencing
CN109685397A (en) * 2019-01-31 2019-04-26 武汉理工大学 A kind of meter and direct load control lower electrical couplings system reliability estimation method
KR102204432B1 (en) * 2020-08-20 2021-01-18 주식회사 엠디엠 Device for Sensing Battery and Sensing Battery system Using by Same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120238319A1 (en) * 2011-03-16 2012-09-20 Colin Patrick Lake System and method for combined alarm detection and emergency signaling
CN105958480A (en) * 2016-05-27 2016-09-21 清华大学 Combined static safety analysis method for electrical-gas coupling multiple energy flow system
CN109615248A (en) * 2018-12-14 2019-04-12 浙江大学 A kind of cascading failure in power system estimation method for considering natural gas system and influencing
CN109685397A (en) * 2019-01-31 2019-04-26 武汉理工大学 A kind of meter and direct load control lower electrical couplings system reliability estimation method
KR102204432B1 (en) * 2020-08-20 2021-01-18 주식회사 엠디엠 Device for Sensing Battery and Sensing Battery system Using by Same

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEN BINBIN ET AL.: "Decentralized Optimal Gas-Power Flow Calculation via Modified Generalized Benders Decomposition", 《2020 IEEE 4TH CONFERENCE ON ENERGY INTERNET AND ENERGY SYSTEM INTEGRATION》, no. 12, 1 November 2020 (2020-11-01), pages 1366 - 1370 *
乔铮等: "电力―天然气耦合系统建模与规划运行研究综述", 全球能源互联网, vol. 3, no. 1, 31 January 2020 (2020-01-31), pages 14 - 26 *
田超等: "电力应急管理中的综合预测预警技术", 清华大学学报(自然科学版)网络.预览, vol. 49, no. 4, 31 December 2009 (2009-12-31), pages 481 - 484 *

Similar Documents

Publication Publication Date Title
CN106355293B (en) Method and device for optimally configuring rotating reserve capacity of regional power grid
CN109347127B (en) Energy storage optimal configuration method for dealing with regional power supply line faults
WO2023060815A1 (en) Energy storage capacity optimization configuration method for improving reliability of power distribution network
CN106410823A (en) System and method for inhibiting power fluctuation of new energy power station
CN112861295A (en) Emergency control method and system based on safety early warning of electrical coupling system
CN114776268B (en) Green low-carbon intelligent group control method and system for oil extraction system
CN116562563A (en) Power system optimization operation method based on minimum inertia demand evaluation
CN116094024A (en) Inverter self-adaptive control method, device, terminal and storage medium
CN210804030U (en) Giant hydroelectric power plant overhaul work order management and control system
CN115166546A (en) Online capacity checking method and device for storage battery of distributed direct-current power supply system for station
CN109038502B (en) A kind of low-voltage overcurrent protection setting method, device, equipment and storage medium
CN114188973A (en) Two-stage maintenance-operation robust optimization method considering forced line shutdown
CN110808614B (en) New energy consumption capacity calculation method, system and storage medium
CN110380439B (en) Marine photovoltaic grid-connected energy management device based on super capacitor energy storage
CN208674926U (en) A kind of Mobile energy storage charging system
CN115706416A (en) Capacity optimization configuration method for grid-connected light storage micro-grid battery energy storage system
Liu et al. Capacity optimization of Energy Storage Based on Intelligent optimization Algorithm and Photovoltaic Power Prediction Error Data
CN213637093U (en) Commercial microgrid integration system
CN113809771B (en) Black-start subsystem parallel method comprehensively considering recovery time and success rate
CN113328434B (en) Farm level cooperative control system and method meeting wind power plant supporting requirements
CN107404125A (en) Distribution system of providing multiple forms of energy to complement each other and its energy management method and device
CN116362622B (en) Power grid power supply capacity assessment method and device under extreme meteorological conditions
Liu et al. Wind-diesel-battery hybrid generation system reliability analysis on site and size factors
CN111259520B (en) Decision diagram-based multi-state power generation system operation reliability analysis method
Sun et al. Study on the Optimization of Renewable Energy LVRT Reactive Power Parameters based on Various Voltage Stability Constraints

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination