python - Python 和 PSS/E

Question

我正在尝试通过使用 python 程序来改变 PSS/E 中的总线负载。所以我试图在 python 中编写一个脚本，我可以在 PSS/E 中的两条总线之间将负载更改为不同的值。

Answer 1

您可以使用名为“LOAD_CHNG_4”的 API 例程（在 API.pdf 文档中搜索此例程）。该例程属于加载数据规范函数集。它可用于修改工作案例中现有负载的数据。

Answer 2

我编写了这个类来处理 PSSE 中的负载......它最初是用 SQL alchemy 发送的，所以它有一些我删除的附加功能：

class Load():

    def __init__(self,busnumber,loadID):
        # Initialize the Branch Class Instance Variables to a Default 0; Except for the From,To and Circuit ID
        self.bus = Bus(busnumber)
        self.busI = busnumber
        self.loadID = loadID
        self.status = 0
        self.Pload = 0.0
        self.Qload = 0.0

        self.errorList = []
        self.init()
    def init(self):
        # Setup the load from the case
        # Check to see if bus exists
        busOk = self.bus.init()
        if not busOk[0]: 
            return (False,self.bus.number,"The bus number %d is invalid or does not exist..." % self.bus.number)
        if psspy.loddt2(self.bus.number,self.loadID,'TOTAL','ACT')[0] != 0:
            return (False,False)
        Scomplex = self.check(psspy.loddt2(self.bus.number,self.loadID,'TOTAL','ACT'),'loddt2','ACT')               # Grab the S vector/phasor from the power flow case for the load specified at the BUS number
        self.Pload = Scomplex.real
        self.Qload = Scomplex.imag
        self.status = self.check(psspy.lodint(self.bus.number,self.loadID,'STATUS'),'lodint','STATUS')              # Grab the Status of the Load

        return (True,self.bus.number)

    def check(self,tuple,funName,subFun):
        # Define Error Messages that should be accesable by the end-user and developer
        loddt2 = {
            0:'No error; P and Q or CMPVAL returned',
            1:'Bus not found; P and Q or CMPVAL unchanged.',
            2:'Load not found; P and Q or CMPVAL unchanged.',
            3:'Bus type code is not 1, 2 or 3; P and Q or CMPVAL returned.',
            4:'Load out-of-service; P and Q or CMPVAL returned.',
            5:'Invalid value of STRING1 or STRING2; P and Q or CMPVAL unchanged.'
        }   

        lodint = {
            0:'No error; IVAL returned.',
            1:'Bus not found; IVAL unchanged.',
            2:'Load not found; IVAL unchanged.',
            3:'Bus type code is not 1, 2 or 3; IVAL returned.',
            4:'Load out-of-service; IVAL returned.',
            5:'Invalid value of STRING; IVAL unchanged.'
        }       

        funDic = {
            'loddt2':loddt2,
            'lodint':lodint
        }

        # Retrieve the Right Error Message
        list = funDic[funName]
        msg = list[tuple[0]]
        if tuple[0] > 0:
            logging.debug("Function Name:  %s  Sub Function Name:  %s   Error Message: %s"%(funName,subFun,msg))

        return tuple[1]

    def setLoad(self,loadP):
        self.Pload = loadP
    def updateCase(self):

        # Setup Defaults
        _i = psspy.getdefaultint()
        _f = psspy.getdefaultreal()
        cDef = psspy.getdefaultchar()
        psspy.load_data_3(self.bus.number,self.loadID,[self.status,_i,_i,_i,_i],[self.Pload, self.Qload,_f,_f,_f,_f])

    # To String Method 
    def __repr__(self):
        return "%d %s %d %d" %(self.bus.number,self.loadID,self.Pload,self.Qload)

    # printf Statement that Dumps information to CMD line...Homeage to C and C++
    def printf(self):
        print "\n Bus: %d \n Load ID: %s \n MW Value: %d \n MVAR Value: %d \n" % (self.bus.number,self.loadID,self.Pload,self.Qload)

如果您调用名为“updateCase”的函数，它将获取加载对象中存储的任何值并刷新 PSSE 案例。

Answer 3

查看 PSSE python API 的第二章。它完全涵盖了不断变化的潮流数据。负载数据可以通过总线编号和负载 ID 引用。当您手动输入负载数据本身时，您可以更改在铭牌中看到的所有参数。使用下面的这个函数来改变负载：

ierr = psspy.load_chang(bus_number, load_id, intgar,realar)

有关详细信息，请参阅 API 手册的第 728 页。

Answer 4

http://www.whit.com.au/blog/2011/07/run-psse-from-python-and-not-other-way/

我发现这篇关于如何从 PSSE 运行 Python 命令的博客文章。不过，我认为您的问题与 ASP.NET 没有任何关系。